1)I am using STM32G030K8T6 running an internal 64Mhz close. I configured TIM1, TIM14, TIM16 & TIM17 as follows:
prescaler= 1000-1
counter mode:=up
counter period = 32000-1
output compare channel 1:
Mode= toggle on match
pulse=1-1
CH polarity = low
CH idle state=reset
2) Running all the timer with the above setting using HAL_TIM_OC_Start(&htimx ,TIM_CHANNEL_1 ) where x=1,14,16 and 17 will produce four 1hz output of the same phase ie on and off at the same time.
3) while the program is running, I change the frequency by manipulate the timer ARR ie TIMx-> ARR = lArr_Count - 1; ( where x=1,14,16,17)
4) Everytime a chance in ARR, I make sure to stop the timer and reset the timer counter TIMx->CNT=0; ie
HAL_TIM_Base_Stop(&htim1);HAL_TIM_Base_Stop(&htim14);HAL_TIM_Base_Stop(&htim16);HAL_TIM_Base_Stop(&htim17);
TIM1->CNT=0;TIM14->CNT=0;TIM16->CNT=0;TIM17->CNT=0;
5) However, the result is not what I expect. What I got was that after a few toggle say between 1Hz and 4Hz, sometimes the one or two of the output is not inphase anymore. It will to continue to be in this phase continue unless I power off and power on the STM32.
6) I have tried the "sledgehammer" approach by including the
MX_TIM14_Init();
MX_TIM16_Init();
MX_TIM17_Init();
MX_TIM1_Init();
during the change of frequency, but the phase remains the same unless it is a power down and up.
7) Did I miss anything?
