One more question : can you clarify something about the pin 24 : PB13
The datasheet mentions this pin as SPI2-CLK, which matches with the SMT32WLE datasheet, but it also mentions Boot pin (active low)
At first I thought this was the BOOT0 pin, to force the MCU into bootloader, but there are 2 strange things:
the BOOT0 pin is PH3 on the STM32WLE (not PB13).
to force bootloader, you need to bring the BOOT0 pin HIGH, not LOW.
So I need a bit more info about how this pin is working internally in the LoRa-E5 module
On the LoRa-E5 development board, the USB-SERIAL is connected to PB6/PB7 of UART1, which cannot be used for bootloading (STM32WLE can bootload from UART1 on pins PA9/PA10 or from UART2 on pins PA2/PA3).
So what does this BOOT button (pulling PB13 low) do ?
but this can not answer my questions above. If there is a schematic of the internals of the Wio-E5 module, please point me to it, as I could not find that. (I assume this will not be disclosed to end users…)