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Fix an issue with the pwm_servo driver when using one of the STM32 advanced timers.

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This commit is contained in:
px4dev
2013-08-04 19:43:05 -07:00
parent c33048b521
commit 567f621754
1 changed files with 6 additions and 0 deletions
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src/drivers/stm32/drv_pwm_servo.c
+6
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@@ -88,6 +88,7 @@
#define rCCR4(_tmr) REG(_tmr, STM32_GTIM_CCR4_OFFSET) #define rCCR4(_tmr) REG(_tmr, STM32_GTIM_CCR4_OFFSET)
#define rDCR(_tmr) REG(_tmr, STM32_GTIM_DCR_OFFSET) #define rDCR(_tmr) REG(_tmr, STM32_GTIM_DCR_OFFSET)
#define rDMAR(_tmr) REG(_tmr, STM32_GTIM_DMAR_OFFSET) #define rDMAR(_tmr) REG(_tmr, STM32_GTIM_DMAR_OFFSET)
#define rBDTR(_tmr) REG(_tmr, STM32_ATIM_BDTR_OFFSET)
static void pwm_timer_init(unsigned timer); static void pwm_timer_init(unsigned timer);
static void pwm_timer_set_rate(unsigned timer, unsigned rate); static void pwm_timer_set_rate(unsigned timer, unsigned rate);
@@ -110,6 +111,11 @@ pwm_timer_init(unsigned timer)
rCCER(timer) = 0; rCCER(timer) = 0;
rDCR(timer) = 0; rDCR(timer) = 0;
if ((pwm_timers[timer].base == STM32_TIM1_BASE) || (pwm_timers[timer].base == STM32_TIM8_BASE)) {
/* master output enable = on */
rBDTR(timer) = ATIM_BDTR_MOE;
}
/* configure the timer to free-run at 1MHz */ /* configure the timer to free-run at 1MHz */
rPSC(timer) = (pwm_timers[timer].clock_freq / 1000000) - 1; rPSC(timer) = (pwm_timers[timer].clock_freq / 1000000) - 1;