UART with openThread

[ashish_shukla]

Hello Everyone, 

I'm developing an application which makes use of UART in open thread sdk. 

Now, libopenthread-nrf52840-sdk.a library already makes use of UART0, when I enable UART in sdk_config.h - it gives compilation error. 

As described here , I don't want to make use of USB or SPI libraries as I'm using them as well in my application. 

So, finally I want to use libopenthread-nrf52840-sdk.a library with one UART enabled for my application. 

Please suggest what settings are required to achieve that ? 

Thanks. 

 

 

[Sigurd Hellesvik]

Hi

In this case, the easiest alternative could just be to use UART1 instead of UART0.

This depends on how you control the UART. But if you use the same method as in the UART sample, it should be the following settings:

#ifndef UART0_ENABLED
#define UART0_ENABLED 0
#endif

#ifndef UART1_ENABLED
#define UART1_ENABLED 1
#endif

#ifndef APP_UART_ENABLED
#define APP_UART_ENABLED 1
#endif

#ifndef APP_UART_DRIVER_INSTANCE
#define APP_UART_DRIVER_INSTANCE 1
#endif

Does this fix your issue?

Regards,
Sigurd Hellesvik

[ashish_shukla]

Hi, 

Thanks for your quick reply. 

I'm using serial_uartes example within peripheral examples. Can you please suggest settings when UART is controlled by nrf_serial library ? 

[Sigurd Hellesvik]

Hi

Just to make sure: Are you using the UART peripheral or UARTE peripheral?

Regards,
Sigurd Hellesvik

[ashish_shukla]

Hi 

I'm using UARTE peripheral.  

Regards,

Ashish 

[Sigurd Hellesvik]

Hi

When I set the following in sdk_config.h of one of the thread examples, the example builds fine.
I found these in the userial_uartes example.

#ifndef UART_ENABLED
#define UART_ENABLED 1
#endif

#ifndef UART1_ENABLED
#define UART1_ENABLED 1
#endif

#ifndef NRFX_UARTE_ENABLED
#define NRFX_UARTE_ENABLED 1
#endif

#ifndef NRFX_UARTE1_ENABLED
#define NRFX_UARTE1_ENABLED 1
#endif

I suggest first testing the serial_uartes example, so you know how to use it. Then add relevant code and configuration to the thread example.

Regards,
Sigurd Hellesvik

[ashish_shukla]

Hi, 

I'm familiar with serial_uartes example, built an application in past based on this.

With above settings nrf_serial.c gives compilation error - 

nrf_serial.c:211:15

error: 'nrf_drv_uart_config_t {aka struct <anonymous>}' has no member named 'use_easy_dma'
drv_config.use_easy_dma = (p_config->mode == NRF_SERIAL_MODE_DMA);

Can you please try to compile this file at your end with open-thread ?  

[Sigurd Hellesvik]

Hi

I will add openthread to the "serial_uartes" example to try and recreate your issue.

This will take some time, so I will return here with my results tomorrow.

Regards,
Sigurd Hellesvik