How to use the RXTO event trigger rx interrupt?

RE: How to use the RXTO event trigger rx interrupt?

user26071 — Mon, 16 May 2022 06:43:36 GMT

Do you see the log from your application? What does uart_callback_set() return? Does it return 0 or something else? If you can see your log, you should see it printed
"uart set callback failure"

If it fails, it will print both lines (with your current implementation):

"uart set callback failure."
"uart set callback finished."

Which one is it? And if it fails, what does it fail with?

Try:

printf("uart set callback failure (err = %d)\n", err_code);

RE: How to use the RXTO event trigger rx interrupt?

user101671 — Fri, 13 May 2022 13:08:44 GMT

I mean I have set callback by uart_callback_set function. But the p_cb-<handle is still NULL.

RE: How to use the RXTO event trigger rx interrupt?

user26071 — Fri, 13 May 2022 10:50:02 GMT

[quote user="sunnyyang"]If don't use this function, what should I do？[/quote]

What do you mean?

RE: How to use the RXTO event trigger rx interrupt?

user101671 — Thu, 12 May 2022 14:03:22 GMT

I have used the uart_callback_set to set call back function.If don't use this function, what should I do？

RE: How to use the RXTO event trigger rx interrupt?

user26071 — Thu, 12 May 2022 13:58:01 GMT

Ok, so you are trying to trigger a callback at NULL, then. Why is it NULL? Did you not set up a handler when you initialized the UART?

BR,
Edvin

RE: How to use the RXTO event trigger rx interrupt?

user101671 — Thu, 12 May 2022 13:51:12 GMT

The reason is p_cb-<handle is NULL.

RE: How to use the RXTO event trigger rx interrupt?

user26071 — Thu, 12 May 2022 13:38:10 GMT

Ok, I don't have NCS v1.6.1. What does nrfx_uarte.c line 568 look like?

RE: How to use the RXTO event trigger rx interrupt?

user101671 — Thu, 12 May 2022 12:52:14 GMT

hi profess，

I re-compiling my project and run arm-none-eabi-addr2line.It's point to rx_done_event.

RE: How to use the RXTO event trigger rx interrupt?

user26071 — Mon, 09 May 2022 13:57:11 GMT

Try to use the tool arm-none-eabi-addr2line to look up what function that is on your R14/lr address. It should point to the line reporting the usage fault. It looks like it is in the main thread.

Remember that re-compiling your project may change the build and what functions that are placed here, so remember to use the R14 address from your log from your latest build.

What function does it point to?

BR,

Edvin

RE: How to use the RXTO event trigger rx interrupt?

user101671 — Mon, 09 May 2022 13:09:38 GMT

hi professor,

There are fault during interrupt handling when I run uart_rx_enable.I have merged SDK\nrf\samples\bluetooth\peripheral_uart\prj.conf to my project.

test-devzone.nordicsemi.com/.../6406.prj.conf

RE: How to use the RXTO event trigger rx interrupt?

user26071 — Thu, 05 May 2022 13:55:17 GMT

Ok, so take the UART related configs from the prj.conf in SDK\nrf\samples\bluetooth\peripheral_uart and add them to your prj.conf, and then initialize the UART like it is done in the peripheral_uart sample in your own main.c file.

BR,
Edvin

RE: How to use the RXTO event trigger rx interrupt?

user101671 — Thu, 05 May 2022 13:36:56 GMT

Because my original project referred to peripheral path in \zephyr\samples\bluetooth.My other functions have been finished.

RE: How to use the RXTO event trigger rx interrupt?

user26071 — Thu, 05 May 2022 13:33:10 GMT

Hello,

[quote user="sunnyyang"]The peripheral_uart use uart_rx_enable to enable uart. [/quote]

But did you check what uart_rx_enable does? It uses the uarte_nrfx_init() inside uart_nrfx_uarte.c found in ncs\zephyr\drivers\serial\uart_nrfx_uarte.c.

[quote user="sunnyyang"]But I must use path \zephyr\samples\bluetooth to create my project[/quote]

What do you mean by this? And why must you use this folder?

Best regards,

Edvin

RE: How to use the RXTO event trigger rx interrupt?

user101671 — Thu, 05 May 2022 13:20:21 GMT

hi professor,

I have uesd peripherl_uart example to test and it can meet my needs. But I must use path \zephyr\samples\bluetooth to create my project.Do you have any other suggestions

RE: How to use the RXTO event trigger rx interrupt?

user101671 — Tue, 03 May 2022 13:37:13 GMT

hi Edvin,

I want to receive a buffer after a certain time. The peripheral_uart use uart_rx_enable to enable uart. But I want to use uarte because of easy dma.Do you any uarte example code?

RE: How to use the RXTO event trigger rx interrupt?

user26071 — Tue, 03 May 2022 13:20:23 GMT

Hello,

I don't think we have any example code showing you how to use the RXTO event directly, but it also doesn't do what you describe. The RXTO event is triggered if you use the STOP task register.

From what I understand from your question, you want to receive a buffer after a certain time, perhaps from the first byte. Is that correct? If so, you can look into the peripheral_uart sample found in NCS\nrf\samples\bluetooth\peripheral_uart.

In this sample, you will get a callback when the UART receives some bytes, and then stops. After a given amount of time, the UART will trigger a callback with all the bytes received before the timeout.

Best regards,

Edvin