peripheral_uart, how to separate console and communication ?

Hi,

In most cases I recommend using an overlay file instead of editing the board files.

In the overlay file you should set the console to uart1, enable uart1, reconfigure the uart1 pins, and disable i2c1 as it conflicts with uart1:

/ {
    chosen {
        zephyr,console = &uart1;
    };
};

&uart1 {
    status = "okay";
    tx-pin = <35>;
	rx-pin = <34>;
};

&i2c1 {
	status = "disabled";
};

The default uart1 pins can not be used, as they are by default used by the network core.

Hi,

Thank you for your answer.

I try to make the modification on the prj.overlay file:

I add CONFIG_NRFX_UARTE1=y in the prj.conf file:

and in the main.c file I make a function to use the uart:

I would like to send to the uart "01234" and send to the uart1 the printk "service",

but I send on the uart 0 "service" and "01234".

What should be done to separate sending of the Tx on uart0 and the printk on uart1 ?

Best Regards,

Rob

Hi,

Thank you for your answer.

I try to make the modification on the prj.overlay file:

I add CONFIG_NRFX_UARTE1=y in the prj.conf file:

and in the main.c file I make a function to use the uart:

I would like to send to the uart "01234" and send to the uart1 the printk "service",

but I send on the uart 0 "service" and "01234".

What should be done to separate sending of the Tx on uart0 and the printk on uart1 ?

Best Regards,

Rob

Call the overlay file nrf5340dk_nrf5340_cpuapp.overlay, not prj.overlay.

Let me know how that changes the behavior.

You can also try changing the log configs at the bottom of your prj.conf:

CONFIG_USE_SEGGER_RTT=n
CONFIG_LOG_BACKEND_RTT=n
CONFIG_LOG_BACKEND_UART=y

Thank you !

Now it's work, but I can read an error:

<wrn> bt_ecc: ECC HCI commands not available

You can ignore that warning, that is as expected.