Wake-up timer library to wake from deepsleep/power-down
In a custom board based on NUCLEO-F446ZE with both crystals, WakeUp library has no effect on deepsleep(). It only can be awaken with an external interrupt if the file system_stm32f4xx.c is modified to :
#define USE_PLL_HSE_EXTC (0) /* Use external clock */ #define USE_PLL_HSE_XTAL (1) /* Use external xtal */ #define DEBUG_MCO (0) // Output the MCO1/MCO2 on PA8/PC9 for debugging (0=OFF, 1=ON)
Any ideas on how to make WakeUp library compatible with custom boards with external crystal?