Description
In the current configuration, LSE is forced selected when baudrate <= 9600 is selected for HW Serial.
If LSE is not present UART kernel won't work.
A propose is to add a check after enabling the LSE, if the LSE is ready. Use the LL_RCC_LSE_IsReady()
before changing the kernel clock of the LPUART.
Arduino_Core_STM32/libraries/SrcWrapper/src/stm32/uart.c
Lines 457 to 471 in eebd0e3
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