Extending the Thread Cloud CoAP Client Example with peripheral Hardware

[Apfelsine]

I want to extend the Thread Cloud Client Example (thread_cloud_coap_client_pca10056) with a peripheral controller. And I am looking at the UART Example (ble_app_uart_pca10056_s140) for transmitting and receiving data through a serial device. What do I have to consider merging those two programs? I am using GPIO Pins P0.06, P0.08 and GND for the serial connection.

A Noobie, obviously.

[Jørgen Holmefjord]

Hi,

Are you planning to use the BLE part of ble_app_uart example (Nordic UART service - UART emulation over BLE), or only the HW UART part? There is a basic UART example and another serial example using a newer UART library, in the SDK, if you do not need the BLE part.

If you are planning to integrate the BLE part as well, you need to follow the guidelines in Multiprotocol support documentation, and the page Adding dynamic multiprotocol Thread support to BLE examples. 

Also note that the Thread Cloud CoAP Client Example use the CLI on UART0 peripheral. If you are implementing UART connections to a second device, this must use UARTE1 peripheral.

Best regards,
Jørgen

[Apfelsine]

Jorgen, thank you for your guidance.  I don’ t plan to use the BLE part of the UART examples. I rather plan to use only the HW UART part. The serial example(serial_pca10056.hex) seems like a good example. As the Thread Cloud CoAP Client Example uses the CLI on UART0 peripheral I want to use the UARTE1 peripheral to implement a UART connection to a second device. Looking at the serial_pca10056 example and the sdk_config.h, I enabled the UARTE1 instance

  and caused an error compiling

[Jørgen Holmefjord]

Did you modify the file? Line 83 of nrfx_uaerte.h should say NRFX_UARTE, not NRFX_UARTE1 as it does in your screenshot.

 

[Apfelsine]

Yes, I did modify the main.c file:

I was just following the post

https://devzone.nordicsemi.com/f/nordic-q-a/25173/nrf52840-uart1-not-working-in-sdk-14  with attached main file 1715.main.c. This Serial Port Library Example shows two instances of the port interface for testing. One test is for GPIOs P0.06, P0.08 and one test is for P0.26, P0.27. I thought that it is the same scenario I like to accomplish. Do I have the right approach?

[Jørgen Holmefjord]

I meant if you changed the file nrfx_uarte.h? In your second screenshot from your earier post, line 83 shows .drv_inst_idx = NRFX_CONCAT_3(NRFX_UARTE1, id, _INST_IDX), while in the original file this line should be .drv_inst_idx = NRFX_CONCAT_3(NRFX_UARTE, id, _INST_IDX). You need to remove the added number '1'.