diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD/TIMv1/hal_gpt_lld.c')
| -rw-r--r-- | os/hal/ports/STM32/LLD/TIMv1/hal_gpt_lld.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/os/hal/ports/STM32/LLD/TIMv1/hal_gpt_lld.c b/os/hal/ports/STM32/LLD/TIMv1/hal_gpt_lld.c index 3dda5fbea..0de6ac49d 100644 --- a/os/hal/ports/STM32/LLD/TIMv1/hal_gpt_lld.c +++ b/os/hal/ports/STM32/LLD/TIMv1/hal_gpt_lld.c @@ -819,7 +819,7 @@ void gpt_lld_stop(GPTDriver *gptp) { */
void gpt_lld_start_timer(GPTDriver *gptp, gptcnt_t interval) {
- gptp->tim->ARR = (uint32_t)interval; /* Time constant. */
+ gptp->tim->ARR = (uint32_t)(interval - 1U); /* Time constant. */
gptp->tim->EGR = STM32_TIM_EGR_UG; /* Update event. */
gptp->tim->CNT = 0; /* Reset counter. */
@@ -861,9 +861,9 @@ void gpt_lld_stop_timer(GPTDriver *gptp) { */
void gpt_lld_polled_delay(GPTDriver *gptp, gptcnt_t interval) {
- gptp->tim->ARR = (uint32_t)interval; /* Time constant. */
+ gptp->tim->ARR = (uint32_t)(interval - 1U); /* Time constant. */
gptp->tim->EGR = STM32_TIM_EGR_UG; /* Update event. */
- gptp->tim->SR = 0; /* Clear pending IRQs. */
+ gptp->tim->SR = 0; /* Clear pending IRQs. */
gptp->tim->CR1 = STM32_TIM_CR1_OPM | STM32_TIM_CR1_URS | STM32_TIM_CR1_CEN;
while (!(gptp->tim->SR & STM32_TIM_SR_UIF))
;
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