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stm32h7 timer: Clean up some bit operations to make them more readable.

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This commit is contained in:
Anthony Merlino 2021-04-11 15:36:26 -04:00 committed by Xiang Xiao
parent e5c8bb9b34
commit 95199f4790
3 changed files with 18 additions and 15 deletions
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2
arch/arm/src/stm32h7/hardware/stm32_tim.h
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@ -719,6 +719,7 @@
#define ATIM_CCER_CC5P (1 << 17) /* Bit 17: Capture/Compare 5 output Polarity */
#define ATIM_CCER_CC6E (1 << 20) /* Bit 20: Capture/Compare 6 output enable */
#define ATIM_CCER_CC6P (1 << 21) /* Bit 21: Capture/Compare 6 output Polarity */
#define ATIM_CCER_CCXBASE(ch) (ch << 2) /* Each channel uses 4-bits */
/* 16-bit counter register */
@ -1111,6 +1112,7 @@
#define GTIM_CCER_CC4E (1 << 12) /* Bit 12: Capture/Compare 4 output enable (TIM2-5 only) */
#define GTIM_CCER_CC4P (1 << 13) /* Bit 13: Capture/Compare 4 output Polarity (TIM2-5 only) */
#define GTIM_CCER_CC4NP (1 << 15) /* Bit 15: Capture/Compare 4 output Polarity */
#define GTIM_CCER_CCXBASE(ch) (ch << 2) /* Each channel uses 4-bits */
/* 16-bit counter register */

23
arch/arm/src/stm32h7/stm32_tickless.c
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@ -93,13 +93,13 @@
#endif
#if CONFIG_STM32H7_TICKLESS_CHANNEL == 1
#define DIER_CAPT_IE ATIM_DIER_CC1IE
#define DIER_CAPT_IE GTIM_DIER_CC1IE
#elif CONFIG_STM32H7_TICKLESS_CHANNEL == 2
#define DIER_CAPT_IE ATIM_DIER_CC2IE
#define DIER_CAPT_IE GTIM_DIER_CC2IE
#elif CONFIG_STM32H7_TICKLESS_CHANNEL == 3
#define DIER_CAPT_IE ATIM_DIER_CC3IE
#define DIER_CAPT_IE GTIM_DIER_CC3IE
#elif CONFIG_STM32H7_TICKLESS_CHANNEL == 4
#define DIER_CAPT_IE ATIM_DIER_CC4IE
#define DIER_CAPT_IE GTIM_DIER_CC4IE
#endif
/****************************************************************************
@ -231,7 +231,8 @@ static int stm32_tickless_setchannel(uint8_t channel)
/* Assume that channel is disabled and polarity is active high */
ccer_val &= ~(3 << (channel << 2));
ccer_val &= ~((GTIM_CCER_CC1P | GTIM_CCER_CC1E) <<
GTIM_CCER_CCXBASE(channel));
/* This function is not supported on basic timers. To enable or
* disable it, simply set its clock to valid frequency or zero.
@ -247,11 +248,11 @@ static int stm32_tickless_setchannel(uint8_t channel)
* disabled.
*/
ccmr_val = (ATIM_CCMR_MODE_FRZN << ATIM_CCMR1_OC1M_SHIFT);
ccmr_val = (GTIM_CCMR_MODE_FRZN << GTIM_CCMR1_OC1M_SHIFT);
/* Set polarity */
ccer_val |= ATIM_CCER_CC1P << (channel << 2);
ccer_val |= GTIM_CCER_CC1P << GTIM_CCER_CCXBASE(channel);
/* Define its position (shift) and get register offset */
@ -334,7 +335,7 @@ static void stm32_timing_handler(void)
{
g_tickless.overflow++;
STM32_TIM_ACKINT(g_tickless.tch, ATIM_SR_UIF);
STM32_TIM_ACKINT(g_tickless.tch, GTIM_SR_UIF);
}
/****************************************************************************
@ -356,7 +357,7 @@ static int stm32_tickless_handler(int irq, void *context, void *arg)
{
int interrupt_flags = stm32_tickless_getint();
if (interrupt_flags & ATIM_SR_UIF)
if (interrupt_flags & GTIM_SR_UIF)
{
stm32_timing_handler();
}
@ -678,7 +679,7 @@ int up_timer_gettime(FAR struct timespec *ts)
overflow = g_tickless.overflow;
counter = STM32_TIM_GETCOUNTER(g_tickless.tch);
pending = STM32_TIM_CHECKINT(g_tickless.tch, ATIM_SR_UIF);
pending = STM32_TIM_CHECKINT(g_tickless.tch, GTIM_SR_UIF);
verify = STM32_TIM_GETCOUNTER(g_tickless.tch);
/* If an interrupt was pending before we re-enabled interrupts,
@ -687,7 +688,7 @@ int up_timer_gettime(FAR struct timespec *ts)
if (pending)
{
STM32_TIM_ACKINT(g_tickless.tch, ATIM_SR_UIF);
STM32_TIM_ACKINT(g_tickless.tch, GTIM_SR_UIF);
/* Increment the overflow count and use the value of the
* guaranteed to be AFTER the overflow occurred.

8
arch/arm/src/stm32h7/stm32_tim.c
View File

@ -939,7 +939,7 @@ static int stm32_tim_setchannel(FAR struct stm32_tim_dev_s *dev,
/* Assume that channel is disabled and polarity is active high */
ccer_val &= ~(3 << (channel << 2));
ccer_val &= ~(3 << GTIM_CCER_CCXBASE(channel));
/* This function is not supported on basic timers. To enable or
* disable it, simply set its clock to valid frequency or zero.
@ -960,13 +960,13 @@ static int stm32_tim_setchannel(FAR struct stm32_tim_dev_s *dev,
case STM32_TIM_CH_OUTTOGGLE:
ccmr_val = (GTIM_CCMR_MODE_OCREFTOG << GTIM_CCMR1_OC1M_SHIFT);
ccer_val |= GTIM_CCER_CC1E << (channel << 2);
ccer_val |= GTIM_CCER_CC1E << GTIM_CCER_CCXBASE(channel);
break;
case STM32_TIM_CH_OUTPWM:
ccmr_val = (GTIM_CCMR_MODE_PWM1 << GTIM_CCMR1_OC1M_SHIFT) +
GTIM_CCMR1_OC1PE;
ccer_val |= GTIM_CCER_CC1E << (channel << 2);
ccer_val |= GTIM_CCER_CC1E << GTIM_CCER_CCXBASE(channel);
break;
default:
@ -977,7 +977,7 @@ static int stm32_tim_setchannel(FAR struct stm32_tim_dev_s *dev,
if (mode & STM32_TIM_CH_POLARITY_NEG)
{
ccer_val |= GTIM_CCER_CC1P << (channel << 2);
ccer_val |= GTIM_CCER_CC1P << GTIM_CCER_CCXBASE(channel);
}
/* Define its position (shift) and get register offset */