nRF9160 UART0 changing pins

RE: nRF9160 UART0 changing pins

jfpastrana — Tue, 28 Feb 2023 11:39:15 GMT

Hello,

Finally I got it reading this useful information: Pin control — nRF Connect SDK 2.2.99 documentation (nordicsemi.com)

Here it is the code snippet that works in my case:

&pinctrl {
    uart0_default: uart0_default {
        group1 {
            psels = <NRF_PSEL(UART_TX, 0, 13)>;
        };
        group2 {
            psels = <NRF_PSEL(UART_RX, 0, 14)>;
            bias-pull-up;
        };
    };
    uart0_sleep: uart0_sleep {
        group1 {
            psels = <NRF_PSEL(UART_TX, 0, 13)>,
                    <NRF_PSEL(UART_RX, 0, 14)>;
            low-power-enable;
        };
    };
};

Regards,

RE: nRF9160 UART0 changing pins

jfpastrana — Tue, 28 Feb 2023 10:35:39 GMT

Hello Naeem,

I only want to wire out the UART0, for that purpose I have available pins 13 and 14. By this way I would be able to send/receive AT commands to the modem directly from the computer.

I am using a custom board which has the nrf9160 B0 version. Also I tried this approach: uart0 overlay for hello_world app

However I have the same issue.

Regards

RE: nRF9160 UART0 changing pins

Naeem Maroof — Tue, 28 Feb 2023 10:28:30 GMT

Hi Javier,

Thank you for contacting DevZone at NordicSemi.

Yes, the correct overlay file is enough for that configurations.

However, as you are following the post (mentioned in your query): they are trying to establish uart communication between nrf9160 and nrf52840 on the thingy 91. How is your setup? You are doing uart between which devices and platform?

Please have a look at their solution as well; they needed correct and complete overlays for both mcu.

Regards,

Naeem