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

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

Menon — Thu, 18 Jul 2024 13:07:41 GMT

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

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

pulkit — Wed, 17 Jul 2024 13:17:40 GMT

I am using SDK version v2.6.1 with nrf52833. I have tested with the other pins for RX TX and its working but when I configured RX TX with P0.00 and P0.01, I am not able to see any logs.

uart0_default: uart0_default {
		group1 {
			psels = <NRF_PSEL(UART_TX, 0, 1)>,
				<NRF_PSEL(UART_RTS, 0, 5)>;
		};
		group2 {
			psels = <NRF_PSEL(UART_RX, 0, 0)>,
				<NRF_PSEL(UART_CTS, 0, 7)>;
			bias-pull-up;
		};
	};

	uart0_sleep: uart0_sleep {
		group1 {
			psels = <NRF_PSEL(UART_TX, 0, 1)>,
				<NRF_PSEL(UART_RX, 0, 0)>,
				<NRF_PSEL(UART_RTS, 0, 5)>,
				<NRF_PSEL(UART_CTS, 0, 7)>;
			low-power-enable;
		};
	};

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

Menon — Wed, 17 Jul 2024 12:39:19 GMT

Hello,

Could you please tell me which SDK version and Nordic chip or DK you are using here? How are you configuring the UART logging when enabling the Bootloader? Have you tested it using any other pins? Do the UART logs work in that case?

Kind regards,

Abhijith