michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: timer: stm32u5 lptimer waits for DIER complete

Browse source 
On the stm32U5, when modifying the DIER register of the LPTIM peripheral,
a new write operation to can only be performed when the previous write
operation is completed and before going-on.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2023-02-06 15:48:11 +01:00 • committed by Marti Bolivar
commit 23f03c8030
1 changed files with 5 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
drivers/timer/stm32_lptim_timer.c
View file

@ -435,6 +435,11 @@ static int sys_clock_driver_init(void)
/* ARROK bit validates the write operation to ARR register */ /* ARROK bit validates the write operation to ARR register */
LL_LPTIM_EnableIT_ARROK(LPTIM); LL_LPTIM_EnableIT_ARROK(LPTIM);
stm32_lptim_wait_ready(); stm32_lptim_wait_ready();
#ifdef CONFIG_SOC_SERIES_STM32U5X
while (LL_LPTIM_IsActiveFlag_DIEROK(LPTIM) == 0) {
}
LL_LPTIM_ClearFlag_DIEROK(LPTIM);
#endif
LL_LPTIM_ClearFlag_ARROK(LPTIM); LL_LPTIM_ClearFlag_ARROK(LPTIM);
accumulated_lptim_cnt = 0; accumulated_lptim_cnt = 0;