RE: BLE LTE Gateway With Extra UARTE Instance

Øivind — Mon, 21 Mar 2022 08:28:39 GMT

Hi, sorry for the late response.

I assume you are building for non-secure? If so, try adding this to the uart1 node in the overlay:

status = "okay";

RE: BLE LTE Gateway With Extra UARTE Instance

David — Tue, 15 Mar 2022 20:12:56 GMT

Hello,

A little bit more context to what i want to achieve.

i have a Transport Controller which is responsible for pulling data from a store and sending over a given "transport" in production this transport will be over LTE, however in development i want to use UART instead and have the data flowing over VCOM0 or VCOM2 so that i can test that the data that will be sent to the server is fine.. and i can test the UART side with the DK just plugged into my PC.

I was trying to copy the example nrf/samples/peripheral/lpuart

Overlay file

/ {

chosen {

zephyr,bt-uart=&lpuart;

};

&gpiote {

interrupts = <49 NRF_DEFAULT_IRQ_PRIORITY>;

};

//This is my second instance

&uart1 {

rx-pin = <10>;

tx-pin = <11>;

/delete-property/ rts-pin;

/delete-property/ cts-pin;

lpuart: nrf-sw-lpuart {

compatible = "nordic,nrf-sw-lpuart";

status = "okay";

label = "TRANSPORT";

req-pin = <12>;

rdy-pin = <13>;

};

&uart2 {

current-speed = <1000000>;

status = "okay";

tx-pin = <18>; /* <&interface_to_nrf52840 1 0>; */

rx-pin = <17>; /* <&interface_to_nrf52840 0 0>; */

/delete-property/ rts-pin;

/delete-property/ cts-pin;

/delete-property/ hw-flow-control;

lpuart: nrf-sw-lpuart {

compatible = "nordic,nrf-sw-lpuart";

status = "okay";

label = "LPUART";

req-pin = <21>; /* <&interface_to_nrf52840 3 0>; */

rdy-pin = <19>; /* <&interface_to_nrf52840 2 0>; */

};

The Overlay Looks like this:

CONFIG_NRF_SW_LPUART=y

CONFIG_NRF_SW_LPUART_INT_DRIVEN=y

CONFIG_UART_2_ASYNC=y

CONFIG_UART_2_INTERRUPT_DRIVEN=n

CONFIG_UART_2_NRF_HW_ASYNC=y

CONFIG_UART_2_NRF_HW_ASYNC_TIMER=2

CONFIG_UART_1_ASYNC=y

CONFIG_UART_1_INTERRUPT_DRIVEN=n

CONFIG_UART_1_NRF_HW_ASYNC=y

CONFIG_UART_1_NRF_HW_ASYNC_TIMER=2

But the UART_1 has missing dependencies which i cannot add in

if i could steal the UART instance that the logging uses that would be fine also...

Thanks,

David Hutchinson

RE: BLE LTE Gateway With Extra UARTE Instance

Øivind — Tue, 15 Mar 2022 12:45:55 GMT

Hi,

How are you enabling the second UARTE instance? Could I see your overlay file and prj.conf, and any changes to the board files, if there are any.

Have you made sure to disable any other serial peripherals which share resources with the new UARTE instance? For example if you want to use uart3 you need to disable spi3, which is enabled by default.