Communicating with URT0 and URT1

[Tharak]

Hi Nordic,

1. I am using bl653_dvk board and (C:\ncs\v2.1.0-rc2\zephyr\samples\drivers\uart\echo_bot) is using for my sample

2. Here is i need to communicate with both uart0 and uart1

3. Here if i send data from uart0 then uart1 need to print that data

4. if i send data from uart1 then uart0 need to print that data

5. Could you provide simple program how its works if possible

[Jørgen Holmefjord]

Hi,

I created an example you can test out: echo_bot_dual_UART.zip

This will relay strings received on UART0 to UART1 and vice versa.

Best regards,
Jørgen

[Jørgen Holmefjord]

I only tried building it for the Nordic DKs. If you are using a different board, all the devices may not be defined/enabled in the devicetree.

If building for bl653_dvk, it seems that &uart1 is not enabled/configured in the board DTS file. You can enable it by adding the following overlay file in echo_bot_dual_UART\boards and do a pristine build: 3365.bl653_dvk.overlay

[Tharak]

Hi Jorgen,

1. I downloaded overlay file and i paste in my project folder

2. Still am getting same error

3. please look on it

4. This is an error am getting during building

[Jørgen Holmefjord]

You need to rename the file to match the target board name ("bl653_dvk.overlay"), if not the build system will not find the overlay file for the target that you are building for. Devzone adds the additional numbers at the start of the file if multiple files with the same name have been uploaded.

You should study the nRF Connect SDK 'Getting started tutorials and the Developing with Zephyr and Build and Configuration Systems documentation, to get more familiar with how Zephyr and nRF Connect SDK works. This would be needed in order to develop applications efficiently.

[Tharak]

Hi Jorgen,

1. Its working fine and am getting output also

2. But i have doute its printing from uart0 but i want from uart1

3. For that i tried in many ways to get output from uart1 like commentoff (uart_irq_callback_user_data_set(uart_dev0, serial_cb0, NULL);
uart_irq_rx_enable(uart_dev0);) and tried its printing from uart0 and its printed

4. Again i tried to commentoff this one (uart_irq_callback_user_data_set(uart_dev1, serial_cb1, NULL);
uart_irq_rx_enable(uart_dev1);) and tried its printing from uart0 and its printed

5. But whenever i commentoff both above statements but also am getting output and  printed

6. am really struggling here please help me out if i go in wrong way

7. I need print statement from uart1 this is agenda for me

[Jørgen Holmefjord]

Answered in  DUAL UART .