Combine the Wireless_uart example and the USB CDC example

[Heru]

I tried to combine the Wireless_uart example with the USB CDC example to be capable of using both but it doesn't seem to be working.

When I plug my board using the nrf USB port, my board is not recognized by Windows, nor Linux.

My goal is to be able to send commands to the board through the nrf USB port to manipulate the 802.15.4 library (A bit like HCI_USB zephyr project for Bluetooth).

Any ideas ?

Thanks !

Heru

[awneil]

Have you got the examples working separately?

[Heru]

Yes ! The examples work separately !

[awneil]

So compare what's happening in the USB-only example with what's happening in your combined project.

Compare & contrast.

See where it's going wrong.

Windows (and, I'm sure, Linux) has utilities to let you "spy" on what's happening on the USB ...

[Heru]

Yes, I used dmesg on Linux to get USB logs, and I had this message: "usb 1-1.2: device descriptor read/64, error -110"

The error 110 means "Timeout expired before the transfer completed". I don't really know why I'm getting this error. It seems that my board cannot be powered with the nrf USB port.

[Jørgen Holmefjord]

Can you post your project? We may be able to help you figure out what is going wrong by looking at the code/testing the project.

[Heru]

Sorry for my late repsonse. I can't post my project because this one is private, but I made a small project with both examples inside it. Unfortunately, I'm not able to compile the new project due to a "multiple reference" error:

(.text.UARTE0_UART0_IRQHandler+0x0): multiple definition of `UARTE0_UART0_IRQHandler'; Output/usbd_cdc_acm_pca10056 Release/Obj/nrfx_prs.o:nRF5_SDK_17.0.0_9d13099\modules\nrfx\drivers\src\prs/nrfx_prs.c:81: first defined here

I supposed that in my project, my sdk_config file is not well configured (and also on this one). Could you please help to fix this error ? After this step, I think I'll be able to make my project work !

Thanks !

usbd_cdc_802.15.4.rar

[Jørgen Holmefjord]

Hi,

I modified the example so that it compiles. The following changes were done:

In sdk_config.h I disabled the following configs:

#define NRFX_PRS_ENABLED 0
#define NRF_CLI_ENABLED 0
#define NRF_LOG_BACKEND_UART_ENABLED 0

In the project explorer, I excluded nrf_drv_uart.c, nrfx_uart.c, and nrfx_uarte.c.

usbd_cdc_802.15.4_uart_removed.zip

I'm not sure if you planned to use the CLI or logger library, but most of the libraries use UART0, which is also used inside the 802.15.4 stack. I'm not sure if there are any ways to share this resource.

Best regards,
Jørgen

[Heru]

Hi !

I tried what you sent to me and it compiled without any problems ! The only issue is: the 802.15.4 library doesn't work at all, it's like no RF packets are sent or received !

I use a RF sniffer to verify if my packets are correctly sent but nothing happens !

Any ideas ? All *uart*.c files are maybe useful to make the 802.15.4 library work ?

Thanks !

[Jørgen Holmefjord]

Not sure if that is caused by uart.c, but there are also other files excluded from the project (assert.c, fsm.c, security.c). All these files can be included in the build without and compilation errors. Did you test this?

[Heru]

Hello !

Sorry for my late reply ! This is something I've already done but it still doesn't work unfortunately. I don't really know what to do right now..!

[Jørgen Holmefjord]

Have you debugged the application to see if you get any errors or if it is stuck somewhere?