HOW TO Calculate TIM5 AND TIM6 PERIOD

[SITARAM]

/////////////////////////////////////////////TIMER 5 /////////////////////////////////////

void MX_TIM5_Init(void)
{
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};

htim5.Instance = TIM5;
htim5.Init.Prescaler = 29999;
htim5.Init.CounterMode = TIM_COUNTERMODE_UP;
htim5.Init.Period = 399999;           ////////////how to calculate period of timer 5??????????????
htim5.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim5.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim5) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim5, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim5, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}

}

/////////////////////////////////////////////TIMER 5 END /////////////////////////////////////

///////////////////////////////////////////TIMER 6 /////////////////////////////

void MX_TIM6_Init(void)
{
TIM_MasterConfigTypeDef sMasterConfig = {0};

htim6.Instance = TIM6;
htim6.Init.Prescaler = 29999;
htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
htim6.Init.Period = 699999;              ////////////  how to calculate period of timer 6????????
htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}

} 

BOTH OF THIS ONE MINUTE DIFFRENT WORK TIM5 IS CURRECT WORK BUT TIM6 NOT A PROPER WORK BOTHs TIMER Period calculation formula give me ???????///

[waclawek.jan]

Which STM32?

What is the system clock and how are APB clocks set?

TIM5 is a 32-bit timer, so 399999 is OK; but TIM6 is a 16-bit timer so the maximum Period is 65535 (and so is maximum Prescaler).

So, you cannot achieve one minute period with TIM6. You can set it to e.g. a one second period, and then in the Update interrupt, count a variable up to 60 and perform whatever action you want to do once in a minute, when that is reached.

JW

[SITARAM]

THANKS SIR