I am currently working with the nrf54l15, I have both the DK and a custom board I designed. I am running into issues with the uart00 peripheral when using custom GPIO pins on Port P2. I have connected the DK up to a logic analyser and I confirmed that when connected to the dedicated uart pins 2.7 and 2.8, everything works as expected. However, when using other pins on port P2 such as 2.4 and 2.5, I cannot get the peripheral to work correctly. Note that I have disabled the flash memory which is connected to spi00 for when testing pins 2.4 and 2.5. I have also tested other pins on Port 2 and haven't been able to replicate the working result with the logic analyser.
The only section of my project that I am modifying is the device tree configuration for the uart controller -
uart00_default: uart00_default {
group1 {
psels = <NRF_PSEL(UART_TX, 2, 4)>; // If you set this to 2, 8 it works
};
group2 {
psels = <NRF_PSEL(UART_RX, 2, 5)>; // If you set this to 2, 7 it works
bias-pull-up;
};
};
uart00_sleep: uart00_sleep {
group1 {
psels = <NRF_PSEL(UART_TX, 2, 4)>, // If you set this to 2, 8 it works
<NRF_PSEL(UART_RX, 2, 5)>; // If you set this to 2, 7 it works
low-power-enable;
};
};
&uart00 {
status = "okay";
current-speed = <115200>;
pinctrl-0 = <&uart00_default>;
pinctrl-1 = <&uart00_sleep>;
pinctrl-names = "default", "sleep";
};
I am a quite confused why this is happening since the data sheet states that you can use GPIO on P2 for uarte00.
Have I missed something somewhere?
I am currently using the ncs v2.9.0-nRF54H20-rc1 SDK + toolchain on MacOS 15.2.
