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STM32 LPTICKER with LPTIM minor update 

Code cleaning (L0 Cube update, comment precision)
pull/7507/head
jeromecoutant 2018-07-12 17:34:16 +02:00
parent f4c936f455
commit 8a0b83233a
1 changed files with 7 additions and 10 deletions
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17
targets/TARGET_STM/lp_ticker.c
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@ -60,18 +60,11 @@ static void (*irq_handler)(void);
void lp_ticker_init(void) void lp_ticker_init(void)
{ {
NVIC_DisableIRQ(LPTIM1_IRQn);
/* Check if LPTIM is already configured */ /* Check if LPTIM is already configured */
#if (TARGET_STM32L0)
if (READ_BIT(RCC->APB1ENR, RCC_APB1ENR_LPTIM1EN) != RESET) {
return;
}
#else
if (__HAL_RCC_LPTIM1_IS_CLK_ENABLED()) { if (__HAL_RCC_LPTIM1_IS_CLK_ENABLED()) {
lp_ticker_disable_interrupt();
return; return;
} }
#endif
RCC_PeriphCLKInitTypeDef RCC_PeriphCLKInitStruct = {0}; RCC_PeriphCLKInitTypeDef RCC_PeriphCLKInitStruct = {0};
RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_OscInitTypeDef RCC_OscInitStruct = {0};
@ -153,6 +146,7 @@ void lp_ticker_init(void)
__HAL_LPTIM_ENABLE_IT(&LptimHandle, LPTIM_IT_CMPM); __HAL_LPTIM_ENABLE_IT(&LptimHandle, LPTIM_IT_CMPM);
HAL_LPTIM_Counter_Start(&LptimHandle, 0xFFFF); HAL_LPTIM_Counter_Start(&LptimHandle, 0xFFFF);
/* Need to write a compare value in order to get LPTIM_FLAG_CMPOK in set_interrupt */
__HAL_LPTIM_COMPARE_SET(&LptimHandle, 0); __HAL_LPTIM_COMPARE_SET(&LptimHandle, 0);
} }
@ -201,7 +195,7 @@ void lp_ticker_set_interrupt(timestamp_t timestamp)
irq_handler = (void (*)(void))lp_ticker_irq_handler; irq_handler = (void (*)(void))lp_ticker_irq_handler;
/* CMPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_CMP register has been successfully completed */ /* CMPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_CMP register has been successfully completed */
/* Any successive write before respectively the ARROK flag or the CMPOK flag be set, will lead to unpredictable results */ /* Any successive write before the CMPOK flag be set, will lead to unpredictable results */
while (__HAL_LPTIM_GET_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK) == RESET) { while (__HAL_LPTIM_GET_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK) == RESET) {
} }
@ -221,8 +215,11 @@ void lp_ticker_fire_interrupt(void)
void lp_ticker_disable_interrupt(void) void lp_ticker_disable_interrupt(void)
{ {
LptimHandle.Instance = LPTIM1;
NVIC_DisableIRQ(LPTIM1_IRQn); NVIC_DisableIRQ(LPTIM1_IRQn);
LptimHandle.Instance = LPTIM1;
/* Waiting last write operation completion */
while (__HAL_LPTIM_GET_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK) == RESET) {
}
} }
void lp_ticker_clear_interrupt(void) void lp_ticker_clear_interrupt(void)