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Added SCU I2C0 specific configuration.

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This commit is contained in:
TitanMKD 2012-06-03 18:57:33 +02:00
parent 646e8f20f1
commit 67a048b5b0
2 changed files with 77 additions and 0 deletions
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3
examples/lpc43xx/hackrf-jellybean/miniblink/miniblink.c
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@ -37,6 +37,9 @@ void gpio_setup(void)
scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST);
/* Configure SCU I2C0 Peripheral (to be moved later in I2C driver) */
SCU_SFSI2C0 = SCU_I2C0_NOMINAL;
/* Configure all GPIO as Input (safe state) */
GPIO0_DIR = 0;
GPIO1_DIR = 0;

74
include/libopencm3/lpc43xx/scu.h
View File

@ -312,6 +312,80 @@
/* Pin interrupt select register for pin interrupts 4 to 7 */
#define SCU_PINTSEL1 MMIO32(SCU_BASE + 0xE04)
/**************************/
/* SCU I2C0 Configuration */
/**************************/
/* Select input glitch filter time constant for the SCL pin.
0 = 50 ns glitch filter.
1 = 3ns glitch filter.
*/
#define SCU_SCL_EFP (BIT0)
/* BIT1 Reserved. Always write a 0 to this bit. */
/* Select I2C mode for the SCL pin.
0 = Standard/Fast mode transmit.
1 = Fast-mode Plus transmit.
*/
#define SCU_SCL_EHD (BIT2)
/* Enable the input receiver for the SCL pin.
Always write a 1 to this bit when using the
I2C0.
0 = Disabled.
1 = Enabled.
*/
#define SCU_SCL_EZI_EN (BIT3)
/* BIT4-6 Reserved. */
/* Enable or disable input glitch filter for the
SCL pin. The filter time constant is
determined by bit EFP.
0 = Enable input filter.
1 = Disable input filter.
*/
#define SCU_SCL_ZIF_DIS (BIT7)
/* Select input glitch filter time constant for the SDA pin.
0 = 50 ns glitch filter.
1 = 3ns glitch filter.
*/
#define SCU_SDA_EFP (BIT8)
/* BIT9 Reserved. Always write a 0 to this bit. */
/* Select I2C mode for the SDA pin.
0 = Standard/Fast mode transmit.
1 = Fast-mode Plus transmit.
*/
#define SCU_SDA_EHD (BIT10)
/* Enable the input receiver for the SDA pin.
Always write a 1 to this bit when using the
I2C0.
0 = Disabled.
1 = Enabled.
*/
#define SCU_SDA_EZI_EN (BIT11)
/* BIT 12-14 - Reserved */
/* Enable or disable input glitch filter for the
SDA pin. The filter time constant is
determined by bit SDA_EFP.
0 = Enable input filter.
1 = Disable input filter.
*/
#define SCU_SDA_ZIF_DIS (BIT15)
/* Standard mode for I2C SCL/SDA Standard/Fast mode */
#define SCU_I2C0_NOMINAL (SCU_SCL_EZI_EN | SCU_SDA_EZI_EN)
/* Standard mode for I2C SCL/SDA Fast-mode Plus transmit */
#define SCU_I2C0_FAST (SCU_SCL_EFP | SCU_SCL_EHD | SCU_SCL_EZI_EN | SCU_SCL_ZIF_DIS \
SCU_SDA_EFP | SCU_SDA_EHD | SCU_SDA_EZI_EN)
/*
SCU PIN Normal Drive:
The pin configuration registers for normal-drive pins control the following pins: