Greetings,
We are using the NCS for the development of a new product with a custom board based on the nRF52840 MCU.
First, we would like to use the Serial DFU feature to update the firmware over UART. I have found and will be implementing this guide for that. Please confirm that this is indeed correct.
Second we want to also use the same lines(RX/TX) as GPIOs (inputs) and read their status. What way would you suggest going about this? I have found this suggestion usefull (connecting the TX/RX lines to two other available GPIO pins to also read the level of the TX/RX lines) as we will not be using the UART interface and reading the same lines simultaneously.
What are your thoughts and suggestions on implementing this? Will connecting two other GPIO pins on the RX/TX lines cause issues to the UART even if we do not read the pins while the UART interface is in use?
Thank you very much and I look forward to hearing from you!
Best regards,
Stavros