Hi Forum,
I am using the stm32H743 and trying to keep the power consumption as low as possible by entering sleep or stop mode. I am then using a lptimer to wake the device. Eventually, I will also use the timer to determine how long the device is asleep for. I have been using stm32cubeIDE/MX to develop with.
When I use LPTIM1 this all works fine and the device is woken from sleep or stop mode.
However, I have tried to move across to LPTIM5 and the device will wake from sleep mode, but will not wake from stop mode.
From what I can see in the RM all the LPTIMERS can wake the device from stop mode, but just want to check that I haven't missed something.
A couple of snippets below..
HAL_LPTIM_Counter_Start_IT(&hlptim5, 300); //300 seconds timer
// HAL_LPTIM_Counter_Start_IT(&hlptim1, 300);
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
//HAL_PWR_EnterSLEEPMode(PWR_LOWPOWERREGULATOR_ON, PWR_SLEEPENTRY_WFI);
Many thanks
Alan
