Using pin P0.00 and P0.01 as RX TX of UART

[pulkit]

I want to use P0.00 and P0.01 as UART pins.
I have shorted the SB3 and SB4, and opened the SB1 and SB2 for using the pin as GPIO.

If I am enabling the "CONFIG_BOOTLOADER_MCUBOOT=y", I am not able to see the log on UART. If I disable this config I can see the logs. Can you please help so that I can use the UART along with the "CONFIG_BOOTLOADER_MCUBOOT=y".

Also used config for using P0.00 and P0.01 as GPIO

CONFIG_GPIO=y
CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y
CONFIG_CLOCK_CONTROL_NRF_K32SRC_500PPM=y
CONFIG_CLOCK_CONTROL_NRF_K32SRC_SYNTH=y

 

[Menon]

Hello,

Your UART configuration in DTS looks fine to me. I am not sure if there is any conflict with MCUboot when using these pins as UART.

Try including the configurations below inside the mcuboot.config file (child_image\mcuboot.conf). See if this makes any difference. If not, I recommend sharing a minimal project so I can review it to determine whether there is any conflict.

# Disable UART console in MCUboot
CONFIG_UART_CONSOLE=n
CONFIG_USE_SEGGER_RTT=n

Best regards,
Abhijith