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stm32: unify bulk of adc convenience functions

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This unifies stm32f1, l1, and f4 convenience functions for adc.  The code
should be useable for f2 and f37x as well, but that needs hardware for testing,
and there was no existing implementation. This is the reason for the
"adc_common_v1.c" name, as trying to put all the different families into the
common file name has become too cumbersome.

All of the deprecated routines have been dropped, they've been marked
deprecated for a very long time now, and porting them seemed unnecessary.

This has been tested on f1, l1 and f4 discovery boards, and is based on some
existing l1/f1 unification code from
https://github.com/karlp/libopencm3/tree/rme_l1_master
This commit is contained in:
Karl Palsson 2014-01-04 10:58:44 +00:00 committed by Karl Palsson
parent 3eaeaf693c
commit 27bc12de61
11 changed files with 1037 additions and 1417 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
include/libopencm3/stm32/common/adc_common_v1.h
View File

@ -289,11 +289,11 @@ specific memorymap.h header before including this header file.*/
/* --- ADC_JOFRx, ADC_HTR, ADC_LTR values ---------------------------------- */ /* --- ADC_JOFRx, ADC_HTR, ADC_LTR values ---------------------------------- */
#define ADC_JOFFSET_LSB 0 #define ADC_JOFFSET_LSB 0
#define ADC_JOFFSET_MSK (0x7ff << 0) #define ADC_JOFFSET_MSK 0xfff
#define ADC_HT_LSB 0 #define ADC_HT_LSB 0
#define ADC_HT_MSK (0x7ff << 0) #define ADC_HT_MSK 0xfff
#define ADC_LT_LSB 0 #define ADC_LT_LSB 0
#define ADC_LT_MSK (0x7ff << 0) #define ADC_LT_MSK 0xfff
/* --- ADC_SQR1 values ----------------------------------------------------- */ /* --- ADC_SQR1 values ----------------------------------------------------- */
/* The sequence length field is always in the same place, but sized /* The sequence length field is always in the same place, but sized
@ -344,6 +344,53 @@ specific memorymap.h header before including this header file.*/
BEGIN_DECLS BEGIN_DECLS
void adc_power_on(uint32_t adc);
void adc_off(uint32_t adc);
void adc_enable_analog_watchdog_regular(uint32_t adc);
void adc_disable_analog_watchdog_regular(uint32_t adc);
void adc_enable_analog_watchdog_injected(uint32_t adc);
void adc_disable_analog_watchdog_injected(uint32_t adc);
void adc_enable_discontinuous_mode_regular(uint32_t adc, uint8_t length);
void adc_disable_discontinuous_mode_regular(uint32_t adc);
void adc_enable_discontinuous_mode_injected(uint32_t adc);
void adc_disable_discontinuous_mode_injected(uint32_t adc);
void adc_enable_automatic_injected_group_conversion(uint32_t adc);
void adc_disable_automatic_injected_group_conversion(uint32_t adc);
void adc_enable_analog_watchdog_on_all_channels(uint32_t adc);
void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc,
uint8_t channel);
void adc_enable_scan_mode(uint32_t adc);
void adc_disable_scan_mode(uint32_t adc);
void adc_enable_eoc_interrupt_injected(uint32_t adc);
void adc_disable_eoc_interrupt_injected(uint32_t adc);
void adc_enable_awd_interrupt(uint32_t adc);
void adc_disable_awd_interrupt(uint32_t adc);
void adc_enable_eoc_interrupt(uint32_t adc);
void adc_disable_eoc_interrupt(uint32_t adc);
void adc_set_left_aligned(uint32_t adc);
void adc_set_right_aligned(uint32_t adc);
bool adc_eoc(uint32_t adc);
bool adc_eoc_injected(uint32_t adc);
uint32_t adc_read_regular(uint32_t adc);
uint32_t adc_read_injected(uint32_t adc, uint8_t reg);
void adc_set_continuous_conversion_mode(uint32_t adc);
void adc_set_single_conversion_mode(uint32_t adc);
void adc_set_regular_sequence(uint32_t adc, uint8_t length, uint8_t channel[]);
void adc_set_injected_sequence(uint32_t adc, uint8_t length, uint8_t channel[]);
void adc_set_injected_offset(uint32_t adc, uint8_t reg, uint32_t offset);
void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold);
void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold);
void adc_start_conversion_regular(uint32_t adc);
void adc_start_conversion_injected(uint32_t adc);
void adc_enable_dma(uint32_t adc);
void adc_disable_dma(uint32_t adc);
/* common methods that have slight differences */
void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time);
void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time);
void adc_disable_external_trigger_regular(uint32_t adc);
void adc_disable_external_trigger_injected(uint32_t adc);
END_DECLS END_DECLS
#endif #endif

66
include/libopencm3/stm32/f1/adc.h
View File

@ -129,6 +129,7 @@ LGPL License Terms @ref lgpl_license
#define ADC_CR1_DUALMOD_MASK (0xF << 16) #define ADC_CR1_DUALMOD_MASK (0xF << 16)
#define ADC_CR1_DUALMOD_SHIFT 16 #define ADC_CR1_DUALMOD_SHIFT 16
#define ADC_CR1_AWDCH_MAX 17
/* --- ADC_CR2 values ------------------------------------------------------ */ /* --- ADC_CR2 values ------------------------------------------------------ */
@ -343,18 +344,11 @@ and ADC2
#define ADC_SMPR_SMP_239DOT5CYC 0x7 #define ADC_SMPR_SMP_239DOT5CYC 0x7
/**@}*/ /**@}*/
/* --- ADC_JOFRx, ADC_HTR, ADC_LTR values ---------------------------------- */
#define ADC_JOFFSET_LSB 0
#define ADC_JOFFSET_MSK (0x7ff << 0)
#define ADC_HT_LSB 0
#define ADC_HT_MSK (0x7ff << 0)
#define ADC_LT_LSB 0
#define ADC_LT_MSK (0x7ff << 0)
/* --- ADC_SQR1 values ----------------------------------------------------- */ /* --- ADC_SQR1 values ----------------------------------------------------- */
#define ADC_SQR1_L_LSB 20 #define ADC_SQR_MAX_CHANNELS_REGULAR 16
#define ADC_SQR1_SQ16_LSB 15 #define ADC_SQR1_SQ16_LSB 15
#define ADC_SQR1_SQ15_LSB 10 #define ADC_SQR1_SQ15_LSB 10
#define ADC_SQR1_SQ14_LSB 5 #define ADC_SQR1_SQ14_LSB 5
@ -409,72 +403,18 @@ and ADC2
BEGIN_DECLS BEGIN_DECLS
void adc_power_on(uint32_t adc);
void adc_start_conversion_direct(uint32_t adc); void adc_start_conversion_direct(uint32_t adc);
void adc_set_single_channel(uint32_t adc, uint8_t channel); void adc_set_single_channel(uint32_t adc, uint8_t channel);
void adc_set_dual_mode(uint32_t mode); void adc_set_dual_mode(uint32_t mode);
bool adc_eoc(uint32_t adc);
bool adc_eoc_injected(uint32_t adc);
uint32_t adc_read_regular(uint32_t adc);
uint32_t adc_read_injected(uint32_t adc, uint8_t reg);
void adc_set_injected_offset(uint32_t adc, uint8_t reg, uint32_t offset);
void adc_enable_analog_watchdog_regular(uint32_t adc);
void adc_disable_analog_watchdog_regular(uint32_t adc);
void adc_enable_analog_watchdog_injected(uint32_t adc);
void adc_disable_analog_watchdog_injected(uint32_t adc);
void adc_enable_discontinuous_mode_regular(uint32_t adc, uint8_t length);
void adc_disable_discontinuous_mode_regular(uint32_t adc);
void adc_enable_discontinuous_mode_injected(uint32_t adc);
void adc_disable_discontinuous_mode_injected(uint32_t adc);
void adc_enable_automatic_injected_group_conversion(uint32_t adc);
void adc_disable_automatic_injected_group_conversion(uint32_t adc);
void adc_enable_analog_watchdog_on_all_channels(uint32_t adc);
void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc,
uint8_t channel);
void adc_enable_scan_mode(uint32_t adc);
void adc_disable_scan_mode(uint32_t adc);
void adc_enable_eoc_interrupt_injected(uint32_t adc);
void adc_disable_eoc_interrupt_injected(uint32_t adc);
void adc_enable_awd_interrupt(uint32_t adc);
void adc_disable_awd_interrupt(uint32_t adc);
void adc_enable_eoc_interrupt(uint32_t adc);
void adc_disable_eoc_interrupt(uint32_t adc);
void adc_enable_temperature_sensor(uint32_t adc); void adc_enable_temperature_sensor(uint32_t adc);
void adc_disable_temperature_sensor(uint32_t adc); void adc_disable_temperature_sensor(uint32_t adc);
void adc_start_conversion_regular(uint32_t adc);
void adc_start_conversion_injected(uint32_t adc);
void adc_enable_external_trigger_regular(uint32_t adc, uint32_t trigger); void adc_enable_external_trigger_regular(uint32_t adc, uint32_t trigger);
void adc_disable_external_trigger_regular(uint32_t adc);
void adc_enable_external_trigger_injected(uint32_t adc, uint32_t trigger); void adc_enable_external_trigger_injected(uint32_t adc, uint32_t trigger);
void adc_disable_external_trigger_injected(uint32_t adc);
void adc_set_left_aligned(uint32_t adc);
void adc_set_right_aligned(uint32_t adc);
void adc_enable_dma(uint32_t adc);
void adc_disable_dma(uint32_t adc);
void adc_reset_calibration(uint32_t adc); void adc_reset_calibration(uint32_t adc);
void adc_calibration(uint32_t adc); void adc_calibration(uint32_t adc);
void adc_set_continuous_conversion_mode(uint32_t adc);
void adc_set_single_conversion_mode(uint32_t adc);
void adc_on(uint32_t adc) void adc_on(uint32_t adc)
LIBOPENCM3_DEPRECATED("will be removed in the first release"); LIBOPENCM3_DEPRECATED("will be removed in the first release");
void adc_off(uint32_t adc);
void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time);
void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time);
void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold);
void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold);
void adc_set_regular_sequence(uint32_t adc, uint8_t length, uint8_t channel[]);
void adc_set_injected_sequence(uint32_t adc, uint8_t length, uint8_t channel[]);
void adc_set_continous_conversion_mode(uint32_t adc)
LIBOPENCM3_DEPRECATED("change to adc_set_continuous_conversion_mode");
void adc_set_conversion_time(uint32_t adc, uint8_t channel, uint8_t time)
LIBOPENCM3_DEPRECATED("change to adc_set_sample_time");
void adc_set_conversion_time_on_all_channels(uint32_t adc, uint8_t time)
LIBOPENCM3_DEPRECATED("change to adc_set_sample_time_on_all_channels");
void adc_enable_jeoc_interrupt(uint32_t adc)
LIBOPENCM3_DEPRECATED("change to adc_enable_eoc_interrupt_injected");
void adc_disable_jeoc_interrupt(uint32_t adc)
LIBOPENCM3_DEPRECATED("change to adc_disable_eoc_interrupt_injected");
END_DECLS END_DECLS
#endif #endif

59
include/libopencm3/stm32/f4/adc.h
View File

@ -118,6 +118,7 @@ LGPL License Terms @ref lgpl_license
/* Note: Bits [21:16] are reserved, and must be kept at reset value. */ /* Note: Bits [21:16] are reserved, and must be kept at reset value. */
/* --- ADC_CR1 values (note some of these are defined elsewhere) ----------- */ /* --- ADC_CR1 values (note some of these are defined elsewhere) ----------- */
#define ADC_CR1_AWDCH_MAX 18
/* --- ADC_CR2 values ------------------------------------------------------ */ /* --- ADC_CR2 values ------------------------------------------------------ */
@ -312,18 +313,10 @@ LGPL License Terms @ref lgpl_license
#define ADC_SMPR_SMP_480CYC 0x7 #define ADC_SMPR_SMP_480CYC 0x7
/**@}*/ /**@}*/
/* --- ADC_JOFRx, ADC_HTR, ADC_LTR values ---------------------------------- */
#define ADC_JOFFSET_LSB 0
#define ADC_JOFFSET_MSK (0x7ff << 0)
#define ADC_HT_LSB 0
#define ADC_HT_MSK (0x7ff << 0)
#define ADC_LT_LSB 0
#define ADC_LT_MSK (0x7ff << 0)
/* --- ADC_SQR1 values ----------------------------------------------------- */ /* --- ADC_SQR1 values ----------------------------------------------------- */
#define ADC_SQR1_L_LSB 20 #define ADC_SQR_MAX_CHANNELS_REGULAR 16
#define ADC_SQR1_SQ16_LSB 15 #define ADC_SQR1_SQ16_LSB 15
#define ADC_SQR1_SQ15_LSB 10 #define ADC_SQR1_SQ15_LSB 10
#define ADC_SQR1_SQ14_LSB 5 #define ADC_SQR1_SQ14_LSB 5
@ -568,51 +561,6 @@ LGPL License Terms @ref lgpl_license
BEGIN_DECLS BEGIN_DECLS
void adc_power_on(uint32_t adc);
void adc_off(uint32_t adc);
void adc_enable_analog_watchdog_regular(uint32_t adc);
void adc_disable_analog_watchdog_regular(uint32_t adc);
void adc_enable_analog_watchdog_injected(uint32_t adc);
void adc_disable_analog_watchdog_injected(uint32_t adc);
void adc_enable_discontinuous_mode_regular(uint32_t adc, uint8_t length);
void adc_disable_discontinuous_mode_regular(uint32_t adc);
void adc_enable_discontinuous_mode_injected(uint32_t adc);
void adc_disable_discontinuous_mode_injected(uint32_t adc);
void adc_enable_automatic_injected_group_conversion(uint32_t adc);
void adc_disable_automatic_injected_group_conversion(uint32_t adc);
void adc_enable_analog_watchdog_on_all_channels(uint32_t adc);
void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc,
uint8_t channel);
void adc_enable_scan_mode(uint32_t adc);
void adc_disable_scan_mode(uint32_t adc);
void adc_enable_eoc_interrupt_injected(uint32_t adc);
void adc_disable_eoc_interrupt_injected(uint32_t adc);
void adc_enable_awd_interrupt(uint32_t adc);
void adc_disable_awd_interrupt(uint32_t adc);
void adc_enable_eoc_interrupt(uint32_t adc);
void adc_disable_eoc_interrupt(uint32_t adc);
void adc_start_conversion_regular(uint32_t adc);
void adc_start_conversion_injected(uint32_t adc);
void adc_disable_external_trigger_regular(uint32_t adc);
void adc_disable_external_trigger_injected(uint32_t adc);
void adc_set_left_aligned(uint32_t adc);
void adc_set_right_aligned(uint32_t adc);
void adc_enable_dma(uint32_t adc);
void adc_disable_dma(uint32_t adc);
void adc_set_continuous_conversion_mode(uint32_t adc);
void adc_set_single_conversion_mode(uint32_t adc);
void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time);
void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time);
void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold);
void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold);
void adc_set_regular_sequence(uint32_t adc, uint8_t length, uint8_t channel[]);
void adc_set_injected_sequence(uint32_t adc, uint8_t length, uint8_t channel[]);
bool adc_eoc(uint32_t adc);
bool adc_eoc_injected(uint32_t adc);
uint32_t adc_read_regular(uint32_t adc);
uint32_t adc_read_injected(uint32_t adc, uint8_t reg);
void adc_set_injected_offset(uint32_t adc, uint8_t reg, uint32_t offset);
void adc_set_clk_prescale(uint32_t prescaler); void adc_set_clk_prescale(uint32_t prescaler);
void adc_set_multi_mode(uint32_t mode); void adc_set_multi_mode(uint32_t mode);
void adc_enable_external_trigger_regular(uint32_t adc, uint32_t trigger, void adc_enable_external_trigger_regular(uint32_t adc, uint32_t trigger,
@ -629,6 +577,7 @@ void adc_eoc_after_each(uint32_t adc);
void adc_eoc_after_group(uint32_t adc); void adc_eoc_after_group(uint32_t adc);
void adc_set_dma_continue(uint32_t adc); void adc_set_dma_continue(uint32_t adc);
void adc_set_dma_terminate(uint32_t adc); void adc_set_dma_terminate(uint32_t adc);
void adc_enable_temperature_sensor(void); void adc_enable_temperature_sensor(void);
void adc_disable_temperature_sensor(void); void adc_disable_temperature_sensor(void);

19
include/libopencm3/stm32/l1/adc.h
View File

@ -1,6 +1,7 @@
/** @defgroup STM32L1xx_adc_defines ADC Defines /** @defgroup STM32L1xx_adc_defines ADC Defines
@brief <b>Defined Constants and Types for the STM32L1xx Analog to Digital Converters</b> @brief <b>Defined Constants and Types for the STM32L1xx Analog to
Digital Converters</b>
@ingroup STM32L1xx_defines @ingroup STM32L1xx_defines
@ -119,6 +120,7 @@ LGPL License Terms @ref lgpl_license
#define ADC_CR1_PDI (1 << 17) #define ADC_CR1_PDI (1 << 17)
#define ADC_CR1_PDD (1 << 16) #define ADC_CR1_PDD (1 << 16)
#define ADC_CR1_AWDCH_MAX 26
/* --- ADC_CR2 values ------------------------------------------------------- */ /* --- ADC_CR2 values ------------------------------------------------------- */
/* SWSTART: */ /** Start conversion of regular channels. */ /* SWSTART: */ /** Start conversion of regular channels. */
@ -156,7 +158,7 @@ LGPL License Terms @ref lgpl_license
#define ADC_CR2_EXTSEL_TIM3_CC3 (8 << ADC_CR2_EXTSEL_SHIFT) #define ADC_CR2_EXTSEL_TIM3_CC3 (8 << ADC_CR2_EXTSEL_SHIFT)
#define ADC_CR2_EXTSEL_TIM4_TRGO (9 << ADC_CR2_EXTSEL_SHIFT) #define ADC_CR2_EXTSEL_TIM4_TRGO (9 << ADC_CR2_EXTSEL_SHIFT)
#define ADC_CR2_EXTSEL_TIM6_TRGO (10 << ADC_CR2_EXTSEL_SHIFT) #define ADC_CR2_EXTSEL_TIM6_TRGO (10 << ADC_CR2_EXTSEL_SHIFT)
// reserved.... /* reserved.... */
#define ADC_CR2_EXTSEL_EXTI11 (15 << ADC_CR2_EXTSEL_SHIFT) #define ADC_CR2_EXTSEL_EXTI11 (15 << ADC_CR2_EXTSEL_SHIFT)
/**@}*/ /**@}*/
@ -175,13 +177,13 @@ LGPL License Terms @ref lgpl_license
#define ADC_CR2_JEXTEN_BOTH_EDGES (0x3 << ADC_CR2_JEXTEN_SHIFT) #define ADC_CR2_JEXTEN_BOTH_EDGES (0x3 << ADC_CR2_JEXTEN_SHIFT)
/**@}*/ /**@}*/
// FIXME - add the values here /* FIXME - add the values here */
#define ADC_CR2_JEXTSEL_SHIFT 16 #define ADC_CR2_JEXTSEL_SHIFT 16
#define ADC_CR2_JEXTSEL_MASK (0xf << ADC_CR2_JEXTSEL_SHIFT) #define ADC_CR2_JEXTSEL_MASK (0xf << ADC_CR2_JEXTSEL_SHIFT)
#define ADC_CR2_EOCS (1 << 10) #define ADC_CR2_EOCS (1 << 10)
#define ADC_CR2_DDS (1 << 9) #define ADC_CR2_DDS (1 << 9)
// FIXME- add the values here /* FIXME- add the values here */
#define ADC_CR2_DELS_SHIFT 4 #define ADC_CR2_DELS_SHIFT 4
#define ADC_CR2_DELS_MASK 0x7 #define ADC_CR2_DELS_MASK 0x7
@ -208,11 +210,18 @@ LGPL License Terms @ref lgpl_license
/**@}*/ /**@}*/
#define ADC_SQR_MASK 0x1f #define ADC_SQR_MASK 0x1f
#define ADC_SQR_MAX_CHANNELS_REGULAR 28 /* m+/h only, otherwise 27 */
#define ADC_CCR_TSVREFE (1 << 23) #define ADC_CCR_TSVREFE (1 << 23)
BEGIN_DECLS BEGIN_DECLS
// We will add these when we are ready... /* L1 specific, or not fully unified adc routines */
void adc_enable_temperature_sensor(void);
void adc_disable_temperature_sensor(void);
void adc_enable_external_trigger_regular(uint32_t adc, uint32_t trigger,
uint32_t polarity);
void adc_enable_external_trigger_injected(uint32_t adc, uint32_t trigger,
uint32_t polarity);
END_DECLS END_DECLS

755
lib/stm32/common/adc_common_v1.c Normal file
View File

@ -0,0 +1,755 @@
/** @addtogroup adc_file
@author @htmlonly &copy; @endhtmlonly
2009 Edward Cheeseman <evbuilder@users.sourceforge.net>
@author @htmlonly &copy; @endhtmlonly
2012 Ken Sarkies <ksarkies@internode.on.net>
@author @htmlonly &copy; @endhtmlonly
2014 Karl Palsson <karlp@tweak.net.au>
This library supports one style of the Analog to Digital Conversion System in
the STM32 series of ARM Cortex Microcontrollers by ST Microelectronics.
The style of ADC Peripheral supported by this code is found in the F1, F2,
F37x, F38x, F4, and L1 series devices (at the time of writing) but is quite
different to the style found on the F0 and F30x and F31x.
Devices can have up to three A/D converters each with their own set of
registers.
However all the A/D converters share a common clock. On most devices, this is
prescaled from the APB2 clock by default by a minimum factor of 2 to a maximum
of 8, though on the L1 this is always a divider from the HSI. (And therefore HSI
_must_ be enabled before attempting to enable the ADC)
Each A/D converter has up to ADC_MAX_CHANNELS channels:
@li On ADC1 the analog channels 16 and 17 are internally connected to the
temperature sensor and V<sub>REFINT</sub>, respectively.
@li On ADC2 (if available) the analog channels 16 and 17 are internally
connected to V<sub>SS</sub>.
@li On ADC3 (if available) the analog channels 9, 14, 15, 16 and 17 are
internally connected to V<sub>SS</sub>.
The conversions can occur as a one-off conversion whereby the process stops once
conversion is complete. The conversions can also be continuous wherein a new
conversion starts immediately the previous conversion has ended.
Conversion can occur as a single channel conversion or a scan of a group of
channels in either continuous or one-off mode. If more than one channel is
converted in a scan group, DMA must be used to transfer the data as there is
only one result register available. An interrupt can be set to occur at the end
of conversion, which occurs after all channels have been scanned.
A discontinuous mode allows a subgroup of group of a channels to be converted in
bursts of a given length.
Injected conversions allow a second group of channels to be converted separately
from the regular group. An interrupt can be set to occur at the end of
conversion, which occurs after all channels have been scanned.
@section adc_api_ex Basic ADC Handling API.
Example 1: Simple single channel conversion polled. Enable the peripheral clock
and ADC, reset ADC and set the prescaler divider. Set dual mode to independent
(default). Enable triggering for a software trigger.
@code
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
adc_off(ADC1);
rcc_peripheral_reset(&RCC_APB2RSTR, RCC_APB2RSTR_ADC1RST);
rcc_peripheral_clear_reset(&RCC_APB2RSTR, RCC_APB2RSTR_ADC1RST);
rcc_set_adcpre(RCC_CFGR_ADCPRE_PCLK2_DIV2);
adc_set_dual_mode(ADC_CR1_DUALMOD_IND);
adc_disable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
adc_set_sample_time(ADC1, ADC_CHANNEL0, ADC_SMPR1_SMP_1DOT5CYC);
adc_set_single_channel(ADC1, ADC_CHANNEL0);
adc_enable_trigger(ADC1, ADC_CR2_EXTSEL_SWSTART);
adc_power_on(ADC1);
adc_reset_calibration(ADC1);
adc_calibration(ADC1);
adc_start_conversion_regular(ADC1);
while (! adc_eoc(ADC1));
reg16 = adc_read_regular(ADC1);
@endcode
LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2014 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/**@{*/
#include <libopencm3/stm32/adc.h>
/*---------------------------------------------------------------------------*/
/** @brief ADC Off
Turn off the ADC to reduce power consumption to a few microamps.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_off(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_ADON;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for Regular Conversions
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_analog_watchdog_regular(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_AWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog for Regular Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_analog_watchdog_regular(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for Injected Conversions
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_analog_watchdog_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JAWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog for Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_analog_watchdog_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JAWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Discontinuous Mode for Regular Conversions
In this mode the ADC converts, on each trigger, a subgroup of up to 8 of the
defined regular channel group. The subgroup is defined by the number of
consecutive channels to be converted. After a subgroup has been converted
the next trigger will start conversion of the immediately following subgroup
of the same length or until the whole group has all been converted. When the
the whole group has been converted, the next trigger will restart conversion
of the subgroup at the beginning of the whole group.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] length Unsigned int8. Number of channels in the group @ref
adc_cr1_discnum
*/
void adc_enable_discontinuous_mode_regular(uint32_t adc, uint8_t length)
{
if ((length-1) > 7) {
return;
}
ADC_CR1(adc) |= ADC_CR1_DISCEN;
ADC_CR1(adc) |= ((length-1) << ADC_CR1_DISCNUM_SHIFT);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Discontinuous Mode for Regular Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_discontinuous_mode_regular(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_DISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Discontinuous Mode for Injected Conversions
In this mode the ADC converts sequentially one channel of the defined group of
injected channels, cycling back to the first channel in the group once the
entire group has been converted.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_discontinuous_mode_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JDISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Discontinuous Mode for Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_discontinuous_mode_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JDISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Automatic Injected Conversions
The ADC converts a defined injected group of channels immediately after the
regular channels have been converted. The external trigger on the injected
channels is disabled as required.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_automatic_injected_group_conversion(uint32_t adc)
{
adc_disable_external_trigger_injected(adc);
ADC_CR1(adc) |= ADC_CR1_JAUTO;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Automatic Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_automatic_injected_group_conversion(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JAUTO;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for All Regular and/or Injected Channels
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@note The analog watchdog must be enabled for either or both of the regular or
injected channels. If neither are enabled, the analog watchdog feature will be
disabled.
@ref adc_enable_analog_watchdog_injected, @ref
adc_enable_analog_watchdog_regular.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_analog_watchdog_on_all_channels(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDSGL;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for a Selected Channel
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@note The analog watchdog must be enabled for either or both of the regular or
injected channels. If neither are enabled, the analog watchdog feature will be
disabled. If both are enabled, the same channel number is monitored.
@ref adc_enable_analog_watchdog_injected, @ref
adc_enable_analog_watchdog_regular.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] channel Unsigned int8. ADC channel number @ref adc_watchdog_channel
*/
void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc,
uint8_t channel)
{
uint32_t reg32;
reg32 = (ADC_CR1(adc) & ~ADC_CR1_AWDCH_MASK); /* Clear bits [4:0]. */
if (channel <= ADC_CR1_AWDCH_MAX) {
reg32 |= channel;
}
ADC_CR1(adc) = reg32;
ADC_CR1(adc) |= ADC_CR1_AWDSGL;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set Scan Mode
In this mode a conversion consists of a scan of the predefined set of channels,
regular and injected, each channel conversion immediately following the
previous one. It can use single, continuous or discontinuous mode.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_scan_mode(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_SCAN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Scan Mode
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_scan_mode(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_SCAN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Injected End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_eoc_interrupt_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JEOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Injected End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_eoc_interrupt_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JEOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_awd_interrupt(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_AWDIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_awd_interrupt(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Regular End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_eoc_interrupt(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_EOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Regular End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_eoc_interrupt(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_EOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set the Data as Left Aligned
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_set_left_aligned(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_ALIGN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set the Data as Right Aligned
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_set_right_aligned(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_ALIGN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read the End-of-Conversion Flag
This flag is set after all channels of a regular or injected group have been
converted.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@returns bool. End of conversion flag.
*/
bool adc_eoc(uint32_t adc)
{
return (ADC_SR(adc) & ADC_SR_EOC) != 0;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read the End-of-Conversion Flag for Injected Conversion
This flag is set after all channels of an injected group have been converted.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@returns bool. End of conversion flag.
*/
bool adc_eoc_injected(uint32_t adc)
{
return (ADC_SR(adc) & ADC_SR_JEOC) != 0;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read from the Regular Conversion Result Register
The result read back is 12 bits, right or left aligned within the first 16 bits.
For ADC1 only, the higher 16 bits will hold the result from ADC2 if
an appropriate dual mode has been set @see adc_set_dual_mode.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@returns Unsigned int32 conversion result.
*/
uint32_t adc_read_regular(uint32_t adc)
{
return ADC_DR(adc);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read from an Injected Conversion Result Register
The result read back from the selected injected result register (one of four)
is 12 bits, right or left aligned within the first 16 bits. The result can have
a negative value if the injected channel offset has been set @see
adc_set_injected_offset.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] reg Unsigned int8. Register number (1 ... 4).
@returns Unsigned int32 conversion result.
*/
uint32_t adc_read_injected(uint32_t adc, uint8_t reg)
{
switch (reg) {
case 1:
return ADC_JDR1(adc);
case 2:
return ADC_JDR2(adc);
case 3:
return ADC_JDR3(adc);
case 4:
return ADC_JDR4(adc);
}
return 0;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Continuous Conversion Mode
In this mode the ADC starts a new conversion of a single channel or a channel
group immediately following completion of the previous channel group conversion.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_set_continuous_conversion_mode(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_CONT;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Single Conversion Mode
In this mode the ADC performs a conversion of one channel or a channel group
and stops.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_set_single_conversion_mode(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_CONT;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set Analog Watchdog Upper Threshold
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] threshold Unsigned int8. Upper threshold value
*/
void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold)
{
uint32_t reg32 = 0;
reg32 = (uint32_t)threshold;
reg32 &= ADC_HT_MSK;
ADC_HTR(adc) = reg32;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set Analog Watchdog Lower Threshold
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] threshold Unsigned int8. Lower threshold value
*/
void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold)
{
uint32_t reg32 = 0;
reg32 = (uint32_t)threshold;
reg32 &= ADC_LT_MSK;
ADC_LTR(adc) = reg32;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set a Regular Channel Conversion Sequence
Define a sequence of channels to be converted as a regular group with a length
from 1 to ADC_REGULAR_SEQUENCE_MAX channels. If this is called during
conversion, the current conversion is reset and conversion begins again with
the newly defined group.
@param[in] adc Unsigned int32. ADC block base address @ref adc_reg_base.
@param[in] length Unsigned int8. Number of channels in the group.
@param[in] channel Unsigned int8[]. Set of channels in sequence, integers 0..31.
*/
void adc_set_regular_sequence(uint32_t adc, uint8_t length, uint8_t channel[])
{
uint32_t fifth6 = 0;
uint32_t fourth6 = 0;
uint32_t third6 = 0;
uint32_t second6 = 0;
uint32_t first6 = 0;
uint8_t i = 0;
if (length > ADC_SQR_MAX_CHANNELS_REGULAR) {
return;
}
for (i = 1; i <= length; i++) {
if (i <= 6) {
first6 |= (channel[i - 1] << ((i - 1) * 5));
}
if ((i > 6) & (i <= 12)) {
second6 |= (channel[i - 1] << ((i - 6 - 1) * 5));
}
if ((i > 12) & (i <= 18)) {
third6 |= (channel[i - 1] << ((i - 12 - 1) * 5));
}
if ((i > 18) & (i <= 24)) {
fourth6 |= (channel[i - 1] << ((i - 18 - 1) * 5));
}
if ((i > 24) & (i <= 28)) {
fifth6 |= (channel[i - 1] << ((i - 24 - 1) * 5));
}
}
#if defined(ADC_SQR5)
ADC_SQR1(adc) = fifth6 | ((length - 1) << ADC_SQR1_L_LSB);
ADC_SQR2(adc) = fourth6;
ADC_SQR3(adc) = third6;
ADC_SQR4(adc) = second6;
ADC_SQR5(adc) = first6;
#else
ADC_SQR1(adc) = third6 | ((length - 1) << ADC_SQR1_L_LSB);
ADC_SQR2(adc) = second6;
ADC_SQR3(adc) = first6;
#endif
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set an Injected Channel Conversion Sequence
Defines a sequence of channels to be converted as an injected group with a
length from 1 to 4 channels. If this is called during conversion, the current
conversion is reset and conversion begins again with the newly defined group.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] length Unsigned int8. Number of channels in the group.
@param[in] channel Unsigned int8[]. Set of channels in sequence, integers 0..18
*/
void adc_set_injected_sequence(uint32_t adc, uint8_t length, uint8_t channel[])
{
uint32_t reg32 = 0;
uint8_t i = 0;
/* Maximum sequence length is 4 channels. Minimum sequence is 1.*/
if ((length - 1) > 3) {
return;
}
for (i = 0; i < length; i++) {
reg32 |= ADC_JSQR_JSQ_VAL(4 - i, channel[length - i - 1]);
}
reg32 |= ADC_JSQR_JL_VAL(length);
ADC_JSQR(adc) = reg32;
}
/*----------------------------------------------------------------------------*/
/** @brief ADC Set the Injected Channel Data Offset
This value is subtracted from the injected channel results after conversion is
complete, and can result in negative results. A separate value can be specified
for each injected data register.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] reg Unsigned int8. Register number (1 ... 4).
@param[in] offset Unsigned int32.
*/
void adc_set_injected_offset(uint32_t adc, uint8_t reg, uint32_t offset)
{
switch (reg) {
case 1:
ADC_JOFR1(adc) = offset;
break;
case 2:
ADC_JOFR2(adc) = offset;
break;
case 3:
ADC_JOFR3(adc) = offset;
break;
case 4:
ADC_JOFR4(adc) = offset;
break;
}
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Software Triggered Conversion on Regular Channels
This starts conversion on a set of defined regular channels if the ADC trigger
is set to be a software trigger. It is cleared by hardware once conversion
starts.
Special F1 Note this is a software trigger and requires triggering to be
enabled and the trigger source to be set appropriately otherwise conversion
will not start. This is not the same as the ADC start conversion operation.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_start_conversion_regular(uint32_t adc)
{
/* Start conversion on regular channels. */
ADC_CR2(adc) |= ADC_CR2_SWSTART;
/* Wait until the ADC starts the conversion. */
while (ADC_CR2(adc) & ADC_CR2_SWSTART);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Software Triggered Conversion on Injected Channels
This starts conversion on a set of defined injected channels if the ADC trigger
is set to be a software trigger. It is cleared by hardware once conversion
starts.
Special F1 Note this is a software trigger and requires triggering to be
enabled and the trigger source to be set appropriately otherwise conversion
will not start. This is not the same as the ADC start conversion operation.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_start_conversion_injected(uint32_t adc)
{
/* Start conversion on injected channels. */
ADC_CR2(adc) |= ADC_CR2_JSWSTART;
/* Wait until the ADC starts the conversion. */
while (ADC_CR2(adc) & ADC_CR2_JSWSTART);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable DMA Transfers
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_dma(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_DMA;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable DMA Transfers
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_dma(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_DMA;
}
/**@}*/

2
lib/stm32/f1/Makefile
View File

@ -33,7 +33,7 @@ CFLAGS = -Os -g \
# ARFLAGS = rcsv # ARFLAGS = rcsv
ARFLAGS = rcs ARFLAGS = rcs
OBJS = adc.o can.o desig.o ethernet.o flash.o gpio.o \ OBJS = adc.o adc_common_v1.o can.o desig.o ethernet.o flash.o gpio.o \
rcc.o rtc.o timer.o rcc.o rtc.o timer.o
OBJS += crc_common_all.o dac_common_all.o dma_common_l1f013.o \ OBJS += crc_common_all.o dac_common_all.o dma_common_l1f013.o \

680
lib/stm32/f1/adc.c
View File

@ -118,6 +118,7 @@ LGPL License Terms @ref lgpl_license
If the ADC is in power-down mode then it is powered up. The application needs If the ADC is in power-down mode then it is powered up. The application needs
to wait a time of about 3 microseconds for stabilization before using the ADC. to wait a time of about 3 microseconds for stabilization before using the ADC.
If the ADC is already on this function call has no effect. If the ADC is already on this function call has no effect.
* NOTE Common with F37x
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base @param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/ */
@ -191,416 +192,7 @@ void adc_set_dual_mode(uint32_t mode)
ADC1_CR1 |= mode; ADC1_CR1 |= mode;
} }
/*---------------------------------------------------------------------------*/
/** @brief ADC Read the End-of-Conversion Flag
This flag is set after all channels of a regular or injected group have been
converted.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@returns bool. End of conversion flag.
*/
bool adc_eoc(uint32_t adc)
{
return ((ADC_SR(adc) & ADC_SR_EOC) != 0);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read the End-of-Conversion Flag for Injected Conversion
This flag is set after all channels of an injected group have been converted.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@returns bool. End of conversion flag.
*/
bool adc_eoc_injected(uint32_t adc)
{
return ((ADC_SR(adc) & ADC_SR_JEOC) != 0);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read from the Regular Conversion Result Register
The result read back is 12 bits, right or left aligned within the first 16 bits.
For ADC1 only, the higher 16 bits will hold the result from ADC2 if
an appropriate dual mode has been set @see adc_set_dual_mode.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@returns Unsigned int32 conversion result.
*/
uint32_t adc_read_regular(uint32_t adc)
{
return ADC_DR(adc);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read from an Injected Conversion Result Register
The result read back from the selected injected result register (one of four)
is 12 bits, right or left aligned within the first 16 bits. The result can have
a negative value if the injected channel offset has been set @see
adc_set_injected_offset.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@param[in] reg Unsigned int8. Register number (1 ... 4).
@returns Unsigned int32 conversion result.
*/
uint32_t adc_read_injected(uint32_t adc, uint8_t reg)
{
switch (reg) {
case 1:
return ADC_JDR1(adc);
case 2:
return ADC_JDR2(adc);
case 3:
return ADC_JDR3(adc);
case 4:
return ADC_JDR4(adc);
}
return 0;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set the Injected Channel Data Offset
This value is subtracted from the injected channel results after conversion is
complete, and can result in negative results. A separate value can be specified
for each injected data register.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@param[in] reg Unsigned int8. Register number (1 ... 4).
@param[in] offset Unsigned int32.
*/
void adc_set_injected_offset(uint32_t adc, uint8_t reg, uint32_t offset)
{
switch (reg) {
case 1:
ADC_JOFR1(adc) = offset;
break;
case 2:
ADC_JOFR2(adc) = offset;
break;
case 3:
ADC_JOFR3(adc) = offset;
break;
case 4:
ADC_JOFR4(adc) = offset;
break;
}
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for Regular Conversions
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_analog_watchdog_regular(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_AWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog for Regular Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_analog_watchdog_regular(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for Injected Conversions
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_analog_watchdog_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JAWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog for Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_analog_watchdog_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JAWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Discontinuous Mode for Regular Conversions
In this mode the ADC converts, on each trigger, a subgroup of up to 8 of the
defined regular channel group. The subgroup is defined by the number of
consecutive channels to be converted. After a subgroup has been converted
the next trigger will start conversion of the immediately following subgroup
of the same length or until the whole group has all been converted. When the
the whole group has been converted, the next trigger will restart conversion
of the subgroup at the beginning of the whole group.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@param[in] length Unsigned int8. Number of channels in the group @ref
adc_cr1_discnum.
*/
void adc_enable_discontinuous_mode_regular(uint32_t adc, uint8_t length)
{
if ((length-1) > 7) {
return;
}
ADC_CR1(adc) |= ADC_CR1_DISCEN;
ADC_CR1(adc) |= ((length-1) << ADC_CR1_DISCNUM_SHIFT);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Discontinuous Mode for Regular Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_discontinuous_mode_regular(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_DISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Discontinuous Mode for Injected Conversions
In this mode the ADC converts sequentially one channel of the defined group of
injected channels, cycling back to the first channel in the group once the
entire group has been converted.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_discontinuous_mode_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JDISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Discontinuous Mode for Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_discontinuous_mode_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JDISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Automatic Injected Conversions
The ADC converts a defined injected group of channels immediately after the
regular channels have been converted. The external trigger on the injected
channels is disabled as required.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base
*/
void adc_enable_automatic_injected_group_conversion(uint32_t adc)
{
adc_disable_external_trigger_injected(adc);
ADC_CR1(adc) |= ADC_CR1_JAUTO;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Automatic Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_automatic_injected_group_conversion(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JAUTO;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for All Regular and/or Injected Channels
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@note The analog watchdog must be enabled for either or both of the regular or
injected channels. If neither are enabled, the analog watchdog feature will be
disabled.
@ref adc_enable_analog_watchdog_injected, @ref
adc_enable_analog_watchdog_regular.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_analog_watchdog_on_all_channels(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDSGL;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for a Selected Channel
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@note The analog watchdog must be enabled for either or both of the regular or
injected channels. If neither are enabled, the analog watchdog feature will be
disabled. If both are enabled, the same channel number is monitored.
@ref adc_enable_analog_watchdog_injected, @ref
adc_enable_analog_watchdog_regular.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@param[in] channel Unsigned int8. ADC channel number @ref adc_watchdog_channel.
*/
void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc,
uint8_t channel)
{
uint32_t reg32;
reg32 = (ADC_CR1(adc) & 0xffffffe0); /* Clear bits [4:0]. */
if (channel < 18) {
reg32 |= channel;
}
ADC_CR1(adc) = reg32;
ADC_CR1(adc) |= ADC_CR1_AWDSGL;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set Scan Mode
In this mode a conversion consists of a scan of the predefined set of channels,
regular and injected, each channel conversion immediately following the
previous one. It can use single, continuous or discontinuous mode.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_scan_mode(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_SCAN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Scan Mode
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_scan_mode(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_SCAN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Injected End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_eoc_interrupt_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JEOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Injected End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_eoc_interrupt_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JEOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_awd_interrupt(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_AWDIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_awd_interrupt(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Regular End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_eoc_interrupt(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_EOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Regular End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_eoc_interrupt(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_EOCIE;
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief ADC Enable The Temperature Sensor /** @brief ADC Enable The Temperature Sensor
@ -632,53 +224,6 @@ void adc_disable_temperature_sensor(uint32_t adc)
ADC_CR2(adc) &= ~ADC_CR2_TSVREFE; ADC_CR2(adc) &= ~ADC_CR2_TSVREFE;
} }
/*---------------------------------------------------------------------------*/
/** @brief ADC Software Triggered Conversion on Regular Channels
This starts conversion on a set of defined regular channels if the ADC trigger
is set to be a software trigger. It is cleared by hardware once conversion
starts.
Note this is a software trigger and requires triggering to be enabled and the
trigger source to be set appropriately otherwise conversion will not start.
This is not the same as the ADC start conversion operation.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_start_conversion_regular(uint32_t adc)
{
/* Start conversion on regular channels. */
ADC_CR2(adc) |= ADC_CR2_SWSTART;
/* Wait until the ADC starts the conversion. */
while (ADC_CR2(adc) & ADC_CR2_SWSTART);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Software Triggered Conversion on Injected Channels
This starts conversion on a set of defined injected channels if the ADC trigger
is set to be a software trigger. It is cleared by hardware once conversion
starts.
Note this is a software trigger and requires triggering to be enabled and the
trigger source to be set appropriately otherwise conversion will not start.
This is not the same as the ADC start conversion operation.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_start_conversion_injected(uint32_t adc)
{
/* Start conversion on injected channels. */
ADC_CR2(adc) |= ADC_CR2_JSWSTART;
/* Wait until the ADC starts the conversion. */
while (ADC_CR2(adc) & ADC_CR2_JSWSTART);
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief ADC Enable an External Trigger for Regular Channels /** @brief ADC Enable an External Trigger for Regular Channels
@ -787,62 +332,6 @@ void adc_disable_external_trigger_injected(uint32_t adc)
ADC_CR2(adc) &= ~ADC_CR2_JEXTTRIG; ADC_CR2(adc) &= ~ADC_CR2_JEXTTRIG;
} }
/*---------------------------------------------------------------------------*/
/** @brief ADC Set the Data as Left Aligned
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_set_left_aligned(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_ALIGN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set the Data as Right Aligned
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_set_right_aligned(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_ALIGN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable DMA Transfers
Only available for ADC1 through DMA1 channel1, and ADC3 through DMA2 channel5.
ADC2 will use DMA if it is set as slave in dual mode with ADC1 in DMA transfer
mode.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_enable_dma(uint32_t adc)
{
if ((adc == ADC1) | (adc == ADC3)) {
ADC_CR2(adc) |= ADC_CR2_DMA;
}
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable DMA Transfers
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_disable_dma(uint32_t adc)
{
if ((adc == ADC1) | (adc == ADC3)) {
ADC_CR2(adc) &= ~ADC_CR2_DMA;
}
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief ADC Initialize Calibration Registers /** @brief ADC Initialize Calibration Registers
@ -879,36 +368,6 @@ void adc_calibration(uint32_t adc)
while (ADC_CR2(adc) & ADC_CR2_CAL); while (ADC_CR2(adc) & ADC_CR2_CAL);
} }
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Continuous Conversion Mode
In this mode the ADC starts a new conversion of a single channel or a channel
group immediately following completion of the previous channel group conversion.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_set_continuous_conversion_mode(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_CONT;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Single Conversion Mode
In this mode the ADC performs a conversion of one channel or a channel group
and stops.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_set_single_conversion_mode(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_CONT;
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief ADC Power On /** @brief ADC Power On
@ -927,19 +386,6 @@ void adc_on(uint32_t adc)
ADC_CR2(adc) |= ADC_CR2_ADON; ADC_CR2(adc) |= ADC_CR2_ADON;
} }
/*---------------------------------------------------------------------------*/
/** @brief ADC Off
Turn off the ADC to reduce power consumption to a few microamps.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
*/
void adc_off(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_ADON;
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief ADC Set the Sample Time for a Single Channel /** @brief ADC Set the Sample Time for a Single Channel
@ -951,6 +397,7 @@ adc_reg_base.
@param[in] channel Unsigned int8. ADC Channel integer 0..18 or from @ref @param[in] channel Unsigned int8. ADC Channel integer 0..18 or from @ref
adc_channel. adc_channel.
@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg. @param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg.
* * NOTE Common with f2 and f37x and f4
*/ */
void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time) void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time)
@ -979,6 +426,7 @@ for all channels.
@param[in] adc Unsigned int32. ADC block register address base @ref @param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base. adc_reg_base.
@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg. @param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg.
* * NOTE Common with f2 and f37x and f4
*/ */
void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time) void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time)
@ -997,130 +445,8 @@ void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time)
ADC_SMPR1(adc) = reg32; ADC_SMPR1(adc) = reg32;
} }
/*---------------------------------------------------------------------------*/
/** @brief ADC Set Analog Watchdog Upper Threshold
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@param[in] threshold Unsigned int8. Upper threshold value.
*/
void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold)
{
uint32_t reg32 = 0;
reg32 = (uint32_t)threshold;
reg32 &= ~0xfffff000; /* Clear all bits above 11. */
ADC_HTR(adc) = reg32;
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief ADC Set Analog Watchdog Lower Threshold
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@param[in] threshold Unsigned int8. Lower threshold value.
*/
void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold)
{
uint32_t reg32 = 0;
reg32 = (uint32_t)threshold;
reg32 &= ~0xfffff000; /* Clear all bits above 11. */
ADC_LTR(adc) = reg32;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set a Regular Channel Conversion Sequence
Define a sequence of channels to be converted as a regular group with a length
from 1 to 16 channels. If this is called during conversion, the current
conversion is reset and conversion begins again with the newly defined group.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@param[in] length Unsigned int8. Number of channels in the group.
@param[in] channel Unsigned int8[]. Set of channels in sequence, integers
0..18.
*/
void adc_set_regular_sequence(uint32_t adc, uint8_t length, uint8_t channel[])
{
uint32_t reg32_1 = 0, reg32_2 = 0, reg32_3 = 0;
uint8_t i = 0;
/* Maximum sequence length is 16 channels. */
if (length > 16) {
return;
}
for (i = 1; i <= length; i++) {
if (i <= 6) {
reg32_3 |= (channel[i - 1] << ((i - 1) * 5));
}
if ((i > 6) & (i <= 12)) {
reg32_2 |= (channel[i - 1] << ((i - 6 - 1) * 5));
}
if ((i > 12) & (i <= 16)) {
reg32_1 |= (channel[i - 1] << ((i - 12 - 1) * 5));
}
}
reg32_1 |= ((length - 1) << ADC_SQR1_L_LSB);
ADC_SQR1(adc) = reg32_1;
ADC_SQR2(adc) = reg32_2;
ADC_SQR3(adc) = reg32_3;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set an Injected Channel Conversion Sequence
Defines a sequence of channels to be converted as an injected group with a
length from 1 to 4 channels. If this is called during conversion, the current
conversion is reset and conversion begins again with the newly defined group.
@param[in] adc Unsigned int32. ADC block register address base @ref
adc_reg_base.
@param[in] length Unsigned int8. Number of channels in the group.
@param[in] channel Unsigned int8[]. Set of channels in sequence, integers 0..18.
*/
void adc_set_injected_sequence(uint32_t adc, uint8_t length, uint8_t channel[])
{
uint32_t reg32 = 0;
uint8_t i = 0;
/* Maximum sequence length is 4 channels. Minimum sequence is 1.*/
if ((length - 1) > 3) {
return;
}
for (i = 0; i < length; i++) {
reg32 |= ADC_JSQR_JSQ_VAL(4 - i, channel[length - i - 1]);
}
reg32 |= ADC_JSQR_JL_VAL(length);
ADC_JSQR(adc) = reg32;
}
/*---------------------------------------------------------------------------*/
/* Aliases */
#ifdef __GNUC__
void adc_set_continous_conversion_mode(uint32_t adc)
__attribute__((alias("adc_set_continuous_conversion_mode")));
void adc_set_conversion_time(uint32_t adc, uint8_t channel, uint8_t time)
__attribute__((alias("adc_set_sample_time")));
void adc_set_conversion_time_on_all_channels(uint32_t adc, uint8_t time)
__attribute__((alias("adc_set_sample_time_on_all_channels")));
void adc_enable_jeoc_interrupt(uint32_t adc)
__attribute__((alias("adc_enable_eoc_interrupt_injected")));
void adc_disable_jeoc_interrupt(uint32_t adc)
__attribute__((alias("adc_disable_eoc_interrupt_injected")));
#endif
/**@}*/ /**@}*/

2
lib/stm32/f4/Makefile
View File

@ -36,7 +36,7 @@ CFLAGS = -Os -g \
# ARFLAGS = rcsv # ARFLAGS = rcsv
ARFLAGS = rcs ARFLAGS = rcs
OBJS = adc.o can.o gpio.o pwr.o rcc.o rtc.o crypto.o OBJS = adc.o adc_common_v1.o can.o gpio.o pwr.o rcc.o rtc.o crypto.o
OBJS += crc_common_all.o dac_common_all.o dma_common_f24.o \ OBJS += crc_common_all.o dac_common_all.o dma_common_f24.o \
gpio_common_all.o gpio_common_f0234.o i2c_common_all.o \ gpio_common_all.o gpio_common_f0234.o i2c_common_all.o \

614
lib/stm32/f4/adc.c
View File

@ -86,411 +86,6 @@ LGPL License Terms @ref lgpl_license
/**@{*/ /**@{*/
/*---------------------------------------------------------------------------*/
/** @brief ADC Off
Turn off the ADC to reduce power consumption to a few microamps.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_off(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_ADON;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for Regular Conversions
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_analog_watchdog_regular(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_AWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog for Regular Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_analog_watchdog_regular(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for Injected Conversions
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_analog_watchdog_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JAWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog for Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_analog_watchdog_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JAWDEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Discontinuous Mode for Regular Conversions
In this mode the ADC converts, on each trigger, a subgroup of up to 8 of the
defined regular channel group. The subgroup is defined by the number of
consecutive channels to be converted. After a subgroup has been converted
the next trigger will start conversion of the immediately following subgroup
of the same length or until the whole group has all been converted. When the
the whole group has been converted, the next trigger will restart conversion
of the subgroup at the beginning of the whole group.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] length Unsigned int8. Number of channels in the group @ref
adc_cr1_discnum
*/
void adc_enable_discontinuous_mode_regular(uint32_t adc, uint8_t length)
{
if ((length-1) > 7) {
return;
}
ADC_CR1(adc) |= ADC_CR1_DISCEN;
ADC_CR1(adc) |= ((length-1) << ADC_CR1_DISCNUM_SHIFT);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Discontinuous Mode for Regular Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_discontinuous_mode_regular(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_DISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Discontinuous Mode for Injected Conversions
In this mode the ADC converts sequentially one channel of the defined group of
injected channels, cycling back to the first channel in the group once the
entire group has been converted.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_discontinuous_mode_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JDISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Discontinuous Mode for Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_discontinuous_mode_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JDISCEN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Automatic Injected Conversions
The ADC converts a defined injected group of channels immediately after the
regular channels have been converted. The external trigger on the injected
channels is disabled as required.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_automatic_injected_group_conversion(uint32_t adc)
{
adc_disable_external_trigger_injected(adc);
ADC_CR1(adc) |= ADC_CR1_JAUTO;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Automatic Injected Conversions
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_automatic_injected_group_conversion(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JAUTO;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for All Regular and/or Injected Channels
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@note The analog watchdog must be enabled for either or both of the regular or
injected channels. If neither are enabled, the analog watchdog feature will be
disabled.
@ref adc_enable_analog_watchdog_injected, @ref
adc_enable_analog_watchdog_regular.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_analog_watchdog_on_all_channels(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDSGL;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog for a Selected Channel
The analog watchdog allows the monitoring of an analog signal between two
threshold levels. The thresholds must be preset. Comparison is done before data
alignment takes place, so the thresholds are left-aligned.
@note The analog watchdog must be enabled for either or both of the regular or
injected channels. If neither are enabled, the analog watchdog feature will be
disabled. If both are enabled, the same channel number is monitored.
@ref adc_enable_analog_watchdog_injected, @ref
adc_enable_analog_watchdog_regular.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] channel Unsigned int8. ADC channel number @ref adc_watchdog_channel
*/
void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc,
uint8_t channel)
{
uint32_t reg32;
reg32 = (ADC_CR1(adc) & ~ADC_CR1_AWDCH_MASK); /* Clear bits [4:0]. */
if (channel < 18) {
reg32 |= channel;
}
ADC_CR1(adc) = reg32;
ADC_CR1(adc) |= ADC_CR1_AWDSGL;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set Scan Mode
In this mode a conversion consists of a scan of the predefined set of channels,
regular and injected, each channel conversion immediately following the
previous one. It can use single, continuous or discontinuous mode.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_scan_mode(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_SCAN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Scan Mode
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_scan_mode(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_SCAN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Injected End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_eoc_interrupt_injected(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_JEOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Injected End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_eoc_interrupt_injected(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_JEOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Analog Watchdog Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_awd_interrupt(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_AWDIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Analog Watchdog Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_awd_interrupt(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_AWDIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Regular End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_eoc_interrupt(uint32_t adc)
{
ADC_CR1(adc) |= ADC_CR1_EOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable Regular End-Of-Conversion Interrupt
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_eoc_interrupt(uint32_t adc)
{
ADC_CR1(adc) &= ~ADC_CR1_EOCIE;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Software Triggered Conversion on Regular Channels
This starts conversion on a set of defined regular channels. It is cleared by
hardware once conversion starts.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_start_conversion_regular(uint32_t adc)
{
/* Start conversion on regular channels. */
ADC_CR2(adc) |= ADC_CR2_SWSTART;
/* Wait until the ADC starts the conversion. */
while (ADC_CR2(adc) & ADC_CR2_SWSTART);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Software Triggered Conversion on Injected Channels
This starts conversion on a set of defined injected channels. It is cleared by
hardware once conversion starts.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_start_conversion_injected(uint32_t adc)
{
/* Start conversion on injected channels. */
ADC_CR2(adc) |= ADC_CR2_JSWSTART;
/* Wait until the ADC starts the conversion. */
while (ADC_CR2(adc) & ADC_CR2_JSWSTART);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set the Data as Left Aligned
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_set_left_aligned(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_ALIGN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set the Data as Right Aligned
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_set_right_aligned(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_ALIGN;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable DMA Transfers
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_enable_dma(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_DMA;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Disable DMA Transfers
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_dma(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_DMA;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Continuous Conversion Mode
In this mode the ADC starts a new conversion of a single channel or a channel
group immediately following completion of the previous channel group conversion.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_set_continuous_conversion_mode(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_CONT;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable Single Conversion Mode
In this mode the ADC performs a conversion of one channel or a channel group
and stops.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_set_single_conversion_mode(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_CONT;
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief ADC Set the Sample Time for a Single Channel /** @brief ADC Set the Sample Time for a Single Channel
@ -500,6 +95,7 @@ The sampling time can be selected in ADC clock cycles from 1.5 to 239.5.
@param[in] channel Unsigned int8. ADC Channel integer 0..18 or from @ref @param[in] channel Unsigned int8. ADC Channel integer 0..18 or from @ref
adc_channel adc_channel
@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg @param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg
* NOTE Common with f1, f2 and f37x
*/ */
void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time) void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time)
@ -527,6 +123,7 @@ for all channels.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base @param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg @param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg
* NOTE Common with f1, f2 and f37x
*/ */
void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time) void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time)
@ -545,218 +142,13 @@ void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time)
ADC_SMPR1(adc) = reg32; ADC_SMPR1(adc) = reg32;
} }
/*---------------------------------------------------------------------------*/
/** @brief ADC Set Analog Watchdog Upper Threshold
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] threshold Unsigned int8. Upper threshold value
*/
void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold)
{
uint32_t reg32 = 0;
reg32 = (uint32_t)threshold;
reg32 &= ~0xfffff000; /* Clear all bits above 11. */
ADC_HTR(adc) = reg32;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set Analog Watchdog Lower Threshold
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] threshold Unsigned int8. Lower threshold value
*/
void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold)
{
uint32_t reg32 = 0;
reg32 = (uint32_t)threshold;
reg32 &= ~0xfffff000; /* Clear all bits above 11. */
ADC_LTR(adc) = reg32;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set a Regular Channel Conversion Sequence
Define a sequence of channels to be converted as a regular group with a length
from 1 to 16 channels. If this is called during conversion, the current
conversion is reset and conversion begins again with the newly defined group.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] length Unsigned int8. Number of channels in the group.
@param[in] channel Unsigned int8[]. Set of channels in sequence, integers 0..18.
*/
void adc_set_regular_sequence(uint32_t adc, uint8_t length, uint8_t channel[])
{
uint32_t reg32_1 = 0, reg32_2 = 0, reg32_3 = 0;
uint8_t i = 0;
/* Maximum sequence length is 16 channels. */
if (length > 16) {
return;
}
for (i = 1; i <= length; i++) {
if (i <= 6) {
reg32_3 |= (channel[i - 1] << ((i - 1) * 5));
}
if ((i > 6) & (i <= 12)) {
reg32_2 |= (channel[i - 1] << ((i - 6 - 1) * 5));
}
if ((i > 12) & (i <= 16)) {
reg32_1 |= (channel[i - 1] << ((i - 12 - 1) * 5));
}
}
reg32_1 |= ((length - 1) << ADC_SQR1_L_LSB);
ADC_SQR1(adc) = reg32_1;
ADC_SQR2(adc) = reg32_2;
ADC_SQR3(adc) = reg32_3;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Set an Injected Channel Conversion Sequence
Defines a sequence of channels to be converted as an injected group with a
length from 1 to 4 channels. If this is called during conversion, the current
conversion is reset and conversion begins again with the newly defined group.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] length Unsigned int8. Number of channels in the group.
@param[in] channel Unsigned int8[]. Set of channels in sequence, integers 0..18
*/
void adc_set_injected_sequence(uint32_t adc, uint8_t length, uint8_t channel[])
{
uint32_t reg32 = 0;
uint8_t i = 0;
/* Maximum sequence length is 4 channels. Minimum sequence is 1.*/
if ((length - 1) > 3) {
return;
}
for (i = 0; i < length; i++) {
reg32 |= ADC_JSQR_JSQ_VAL(4 - i, channel[length - i - 1]);
}
reg32 |= ADC_JSQR_JL_VAL(length);
ADC_JSQR(adc) = reg32;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read the End-of-Conversion Flag
This flag is set after all channels of a regular or injected group have been
converted.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@returns bool. End of conversion flag.
*/
bool adc_eoc(uint32_t adc)
{
return (ADC_SR(adc) & ADC_SR_EOC) != 0;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read the End-of-Conversion Flag for Injected Conversion
This flag is set after all channels of an injected group have been converted.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@returns bool. End of conversion flag.
*/
bool adc_eoc_injected(uint32_t adc)
{
return (ADC_SR(adc) & ADC_SR_JEOC) != 0;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read from the Regular Conversion Result Register
The result read back is 12 bits, right or left aligned within the first 16 bits.
For ADC1 only, the higher 16 bits will hold the result from ADC2 if
an appropriate dual mode has been set @see adc_set_dual_mode.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@returns Unsigned int32 conversion result.
*/
uint32_t adc_read_regular(uint32_t adc)
{
return ADC_DR(adc);
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Read from an Injected Conversion Result Register
The result read back from the selected injected result register (one of four)
is 12 bits, right or left aligned within the first 16 bits. The result can have
a negative value if the injected channel offset has been set @see
adc_set_injected_offset.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] reg Unsigned int8. Register number (1 ... 4).
@returns Unsigned int32 conversion result.
*/
uint32_t adc_read_injected(uint32_t adc, uint8_t reg)
{
switch (reg) {
case 1:
return ADC_JDR1(adc);
case 2:
return ADC_JDR2(adc);
case 3:
return ADC_JDR3(adc);
case 4:
return ADC_JDR4(adc);
}
return 0;
}
/*----------------------------------------------------------------------------*/
/** @brief ADC Set the Injected Channel Data Offset
This value is subtracted from the injected channel results after conversion is
complete, and can result in negative results. A separate value can be specified
for each injected data register.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] reg Unsigned int8. Register number (1 ... 4).
@param[in] offset Unsigned int32.
*/
void adc_set_injected_offset(uint32_t adc, uint8_t reg, uint32_t offset)
{
switch (reg) {
case 1:
ADC_JOFR1(adc) = offset;
break;
case 2:
ADC_JOFR2(adc) = offset;
break;
case 3:
ADC_JOFR3(adc) = offset;
break;
case 4:
ADC_JOFR4(adc) = offset;
break;
}
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief ADC Power On /** @brief ADC Power On
If the ADC is in power-down mode then it is powered up. The application needs If the ADC is in power-down mode then it is powered up. The application needs
to wait a time of about 3 microseconds for stabilization before using the ADC. to wait a time of about 3 microseconds for stabilization before using the ADC.
If the ADC is already on this function call will have no effect. If the ADC is already on this function call will have no effect.
* NOTE Common with L1 and F2
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base @param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/ */

1
lib/stm32/l1/Makefile
View File

@ -43,6 +43,7 @@ OBJS += usart_common_all.o usart_common_f124.o
OBJS += exti_common_all.o OBJS += exti_common_all.o
OBJS += rcc_common_all.o OBJS += rcc_common_all.o
OBJS += usb.o usb_control.o usb_standard.o usb_f103.o OBJS += usb.o usb_control.o usb_standard.o usb_f103.o
OBJS += adc.o adc_common_v1.o
VPATH += ../../usb:../:../../cm3:../common VPATH += ../../usb:../:../../cm3:../common

201
lib/stm32/l1/adc.c Normal file
View File

@ -0,0 +1,201 @@
/** @defgroup STM32L1xx_adc_file ADC
@ingroup STM32L1xx
@brief <b>libopencm3 STM32L1xx Analog to Digital Converters</b>
@author @htmlonly &copy; @endhtmlonly 2014 Karl Palsson <karlp@tweak.net.au>
LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2014 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/l1/adc.h>
/**@{*/
/*---------------------------------------------------------------------------*/
/** @brief ADC Power On
If the ADC is in power-down mode then it is powered up. The application needs
to wait a time of about 3 microseconds for stabilization before using the ADC.
If the ADC is already on this function call will have no effect.
* NOTE Common with F4 and F2
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_power_on(uint32_t adc)
{
ADC_CR2(adc) |= ADC_CR2_ADON;
}
/*----------------------------------------------------------------------------*/
/** @brief ADC Set the Sample Time for a Single Channel
The sampling time can be selected in ADC clock cycles from 4 to 384.
@param[in] adc Unsigned int32. ADC block base address @ref adc_reg_base.
@param[in] channel uint8. ADC Channel integer 0..18 or from @ref adc_channel.
@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg.
*/
void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time)
{
uint32_t reg32;
if (channel < 10) {
reg32 = ADC_SMPR3(adc);
reg32 &= ~(0x7 << (channel * 3));
reg32 |= (time << (channel * 3));
ADC_SMPR3(adc) = reg32;
} else if (channel < 20) {
reg32 = ADC_SMPR2(adc);
reg32 &= ~(0x7 << ((channel - 10) * 3));
reg32 |= (time << ((channel - 10) * 3));
ADC_SMPR2(adc) = reg32;
} else {
reg32 = ADC_SMPR1(adc);
reg32 &= ~(0x7 << ((channel - 20) * 3));
reg32 |= (time << ((channel - 20) * 3));
ADC_SMPR1(adc) = reg32;
}
}
/*----------------------------------------------------------------------------*/
/** @brief ADC Set the Sample Time for All Channels
The sampling time can be selected in ADC clock cycles, same for
all channels.
@param[in] adc Unsigned int32. ADC block base address @ref adc_reg_base.
@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg.
*/
void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time)
{
uint8_t i;
uint32_t reg32 = 0;
for (i = 0; i <= 9; i++) {
reg32 |= (time << (i * 3));
}
ADC_SMPR0(adc) = reg32;
ADC_SMPR1(adc) = reg32;
ADC_SMPR2(adc) = reg32;
ADC_SMPR3(adc) = reg32;
}
/*----------------------------------------------------------------------------*/
/** @brief ADC Enable The Temperature Sensor
This enables both the sensor and the reference voltage measurements on channels
16 and 17.
*/
void adc_enable_temperature_sensor()
{
ADC_CCR |= ADC_CCR_TSVREFE;
}
/*----------------------------------------------------------------------------*/
/** @brief ADC Disable The Temperature Sensor
Disabling this will reduce power consumption from the sensor and the reference
voltage measurements.
*/
void adc_disable_temperature_sensor()
{
ADC_CCR &= ~ADC_CCR_TSVREFE;
}
/*----------------------------------------------------------------------------*/
/** @brief ADC Disable an External Trigger for Regular Channels
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
*/
void adc_disable_external_trigger_regular(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_EXTEN_MASK;
}
/*----------------------------------------------------------------------------*/
/** @brief ADC Disable an External Trigger for Injected Channels
@param[in] adc Unsigned int32. ADC block base address @ref adc_reg_base.
*/
void adc_disable_external_trigger_injected(uint32_t adc)
{
ADC_CR2(adc) &= ~ADC_CR2_JEXTEN_MASK;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable an External Trigger for Regular Channels
This enables an external trigger for set of defined regular channels, and sets
the polarity of the trigger event: rising or falling edge or both. Note that if
the trigger polarity is zero, triggering is disabled.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] trigger Unsigned int32. Trigger identifier @ref adc_trigger_regular
@param[in] polarity Unsigned int32. Trigger polarity @ref
adc_trigger_polarity_regular
*/
void adc_enable_external_trigger_regular(uint32_t adc, uint32_t trigger,
uint32_t polarity)
{
uint32_t reg32 = ADC_CR2(adc);
reg32 &= ~(ADC_CR2_EXTSEL_MASK | ADC_CR2_EXTEN_MASK);
reg32 |= (trigger | polarity);
ADC_CR2(adc) = reg32;
}
/*---------------------------------------------------------------------------*/
/** @brief ADC Enable an External Trigger for Injected Channels
This enables an external trigger for set of defined injected channels, and sets
the polarity of the trigger event: rising or falling edge or both.
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
@param[in] trigger Unsigned int8. Trigger identifier @ref adc_trigger_injected
@param[in] polarity Unsigned int32. Trigger polarity @ref
adc_trigger_polarity_injected
*/
void adc_enable_external_trigger_injected(uint32_t adc, uint32_t trigger,
uint32_t polarity)
{
uint32_t reg32 = ADC_CR2(adc);
reg32 &= ~(ADC_CR2_JEXTSEL_MASK | ADC_CR2_JEXTEN_MASK);
reg32 |= (trigger | polarity);
ADC_CR2(adc) = reg32;
}
/**@}*/