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Replaced OC mode selection with an enum, makes it simpler to use.

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This commit is contained in:
Piotr Esden-Tempski 2011-01-28 15:11:52 -08:00
parent 5975750e5e
commit a1bd228c87
3 changed files with 122 additions and 10 deletions
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6
examples/stm32/stm32-h103/pwm_6step/pwm_6step.c
View File

@ -104,7 +104,7 @@ void tim_setup(void)
timer_disable_oc_clear(TIM1, TIM_OC1);
timer_enable_oc_preload(TIM1, TIM_OC1);
timer_set_oc_slow_mode(TIM1, TIM_OC1);
timer_set_oc_mode(TIM1, TIM_OC1, TIM_CCMR1_OC1M_PWM1);
timer_set_oc_mode(TIM1, TIM_OC1, TIM_OCM_PWM1);
/* Configure OC1. */
timer_set_oc_polarity_high(TIM1, TIM_OC1);
@ -131,7 +131,7 @@ void tim_setup(void)
timer_disable_oc_clear(TIM1, TIM_OC2);
timer_enable_oc_preload(TIM1, TIM_OC2);
timer_set_oc_slow_mode(TIM1, TIM_OC2);
timer_set_oc_mode(TIM1, TIM_OC2, TIM_CCMR1_OC2M_PWM1);
timer_set_oc_mode(TIM1, TIM_OC2, TIM_OCM_PWM1);
/* Configure OC2. */
timer_set_oc_polarity_high(TIM1, TIM_OC2);
@ -158,7 +158,7 @@ void tim_setup(void)
timer_disable_oc_clear(TIM1, TIM_OC3);
timer_enable_oc_preload(TIM1, TIM_OC3);
timer_set_oc_slow_mode(TIM1, TIM_OC3);
timer_set_oc_mode(TIM1, TIM_OC3, TIM_CCMR2_OC3M_PWM1);
timer_set_oc_mode(TIM1, TIM_OC3, TIM_OCM_PWM1);
/* Configure OC3. */
timer_set_oc_polarity_high(TIM1, TIM_OC3);

16
include/libopencm3/stm32/timer.h
View File

@ -828,7 +828,7 @@
/* --- TIMx convenience defines -------------------------------------------- */
/* Capture Compare channel designators */
/* Output Compare channel designators */
enum tim_oc_id {
TIM_OC1=0,
TIM_OC1N,
@ -839,6 +839,18 @@ enum tim_oc_id {
TIM_OC4,
};
/* Output Compare mode designators */
enum tim_oc_mode {
TIM_OCM_FROZEN,
TIM_OCM_ACTIVE,
TIM_OCM_INACTIVE,
TIM_OCM_TOGGLE,
TIM_OCM_FORCE_LOW,
TIM_OCM_FORCE_HIGH,
TIM_OCM_PWM1,
TIM_OCM_PWM2,
};
/* --- TIM functions ------------------------------------------------------- */
void timer_set_mode(u32 timer_peripheral, u8 clock_div,
u8 alignment, u8 direction);
@ -872,7 +884,7 @@ void timer_enable_oc_clear(u32 timer_peripheral, enum tim_oc_id oc_id);
void timer_disable_oc_clear(u32 timer_peripheral, enum tim_oc_id oc_id);
void timer_set_oc_fast_mode(u32 timer_peripheral, enum tim_oc_id oc_id);
void timer_set_oc_slow_mode(u32 timer_peripheral, enum tim_oc_id oc_id);
void timer_set_oc_mode(u32 timer_peripheral, enum tim_oc_id oc_id, u32 mode);
void timer_set_oc_mode(u32 timer_peripheral, enum tim_oc_id oc_id, enum tim_oc_mode oc_mode);
void timer_enable_oc_preload(u32 timer_peripheral, enum tim_oc_id oc_id);
void timer_disable_oc_preload(u32 timer_peripheral, enum tim_oc_id oc_id);
void timer_set_oc_polarity_high(u32 timer_peripheral, enum tim_oc_id oc_id);

110
lib/stm32/timer.c
View File

@ -268,32 +268,132 @@ void timer_set_oc_slow_mode(u32 timer_peripheral, enum tim_oc_id oc_id)
}
}
void timer_set_oc_mode(u32 timer_peripheral, enum tim_oc_id oc_id, u32 mode)
void timer_set_oc_mode(u32 timer_peripheral, enum tim_oc_id oc_id, enum tim_oc_mode oc_mode)
{
switch (oc_id) {
case TIM_OC1:
TIM_CCMR1(timer_peripheral) &= ~TIM_CCMR1_CC1S_MASK;
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_CC1S_OUT;
TIM_CCMR1(timer_peripheral) &= ~TIM_CCMR1_OC1M_MASK;
TIM_CCMR1(timer_peripheral) |= mode;
switch (oc_mode) {
case TIM_OCM_FROZEN:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC1M_FROZEN;
break;
case TIM_OCM_ACTIVE:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC1M_ACTIVE;
break;
case TIM_OCM_INACTIVE:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC1M_INACTIVE;
break;
case TIM_OCM_TOGGLE:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC1M_TOGGLE;
break;
case TIM_OCM_FORCE_LOW:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC1M_FORCE_LOW;
break;
case TIM_OCM_FORCE_HIGH:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC1M_FORCE_HIGH;
break;
case TIM_OCM_PWM1:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC1M_PWM1;
break;
case TIM_OCM_PWM2:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC1M_PWM2;
break;
}
break;
case TIM_OC2:
TIM_CCMR1(timer_peripheral) &= ~TIM_CCMR1_CC2S_MASK;
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_CC2S_OUT;
TIM_CCMR1(timer_peripheral) &= ~TIM_CCMR1_OC2M_MASK;
TIM_CCMR1(timer_peripheral) |= mode;
switch (oc_mode) {
case TIM_OCM_FROZEN:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC2M_FROZEN;
break;
case TIM_OCM_ACTIVE:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC2M_ACTIVE;
break;
case TIM_OCM_INACTIVE:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC2M_INACTIVE;
break;
case TIM_OCM_TOGGLE:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC2M_TOGGLE;
break;
case TIM_OCM_FORCE_LOW:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC2M_FORCE_LOW;
break;
case TIM_OCM_FORCE_HIGH:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC2M_FORCE_HIGH;
break;
case TIM_OCM_PWM1:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC2M_PWM1;
break;
case TIM_OCM_PWM2:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR1_OC2M_PWM2;
break;
}
break;
case TIM_OC3:
TIM_CCMR1(timer_peripheral) &= ~TIM_CCMR2_CC3S_MASK;
TIM_CCMR1(timer_peripheral) |= TIM_CCMR2_CC3S_OUT;
TIM_CCMR2(timer_peripheral) &= ~TIM_CCMR2_OC3M_MASK;
TIM_CCMR2(timer_peripheral) |= mode;
switch (oc_mode) {
case TIM_OCM_FROZEN:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC3M_FROZEN;
break;
case TIM_OCM_ACTIVE:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR2_OC3M_ACTIVE;
break;
case TIM_OCM_INACTIVE:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC3M_INACTIVE;
break;
case TIM_OCM_TOGGLE:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC3M_TOGGLE;
break;
case TIM_OCM_FORCE_LOW:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC3M_FORCE_LOW;
break;
case TIM_OCM_FORCE_HIGH:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC3M_FORCE_HIGH;
break;
case TIM_OCM_PWM1:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC3M_PWM1;
break;
case TIM_OCM_PWM2:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC3M_PWM2;
break;
}
break;
case TIM_OC4:
TIM_CCMR1(timer_peripheral) &= ~TIM_CCMR2_CC4S_MASK;
TIM_CCMR1(timer_peripheral) |= TIM_CCMR2_CC4S_OUT;
TIM_CCMR2(timer_peripheral) &= ~TIM_CCMR2_OC4M_MASK;
TIM_CCMR2(timer_peripheral) |= mode;
switch (oc_mode) {
case TIM_OCM_FROZEN:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC4M_FROZEN;
break;
case TIM_OCM_ACTIVE:
TIM_CCMR1(timer_peripheral) |= TIM_CCMR2_OC4M_ACTIVE;
break;
case TIM_OCM_INACTIVE:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC4M_INACTIVE;
break;
case TIM_OCM_TOGGLE:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC4M_TOGGLE;
break;
case TIM_OCM_FORCE_LOW:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC4M_FORCE_LOW;
break;
case TIM_OCM_FORCE_HIGH:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC4M_FORCE_HIGH;
break;
case TIM_OCM_PWM1:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC4M_PWM1;
break;
case TIM_OCM_PWM2:
TIM_CCMR2(timer_peripheral) |= TIM_CCMR2_OC4M_PWM2;
break;
}
break;
case TIM_OC1N:
case TIM_OC2N: