Can ALT_DFU_TX/RX be shared with normal UART communication?

Hardware Notecarrier XM
1

Hi,

I am designing a board with a Notecarrier XM with the Notecard Cellular - CAT-M | Global + STM32 and plan to use ODFU.

Can ALT_DFU_TX and ALT_DFU_RX also be used for normal UART communication between the MCU and Notecard during runtime, and then be reused for ODFU when needed?

Or should these pins be reserved strictly for ODFU only, with normal communication kept on I2C or the standard UART interface?

thanks

2

Hi @AA_NC and welcome to the Blues community!

Great question - the ALT_DFU_TX and ALT_DFU_RX pins should be reserved for ODFU use only!

Thanks,
Rob

3

Hi Rob,

Thank you for the clarification. :slight_smile: