TWI not working with ant+ hrm example on nRF52840.

RE: TWI not working with ant+ hrm example on nRF52840.

v9joshi — Thu, 27 Jul 2023 15:03:00 GMT

There was no ret_code. It just never returned from the call.

I rebuilt my code from the example and it looks like there was some conflict in my pre-processor definitions. Previously I had NRF52 and NRF52832_XXAA, but for the board I'm using I just replaced both of these with NRF52840_XXAA, and managed to get things working properly.

So now it works as intended!

Thanks.

RE: TWI not working with ant+ hrm example on nRF52840.

Hung Bui — Thu, 27 Jul 2023 09:21:31 GMT

Hi,
Do you see any assertion log message ?
What's the ret_code after the call ? Or it never returned from the sd_softdevice_enable() ?
Have you added any function before the nrf_sdh_enable_request() ? If you comment out the TWI code part by part until the example exactly the same as ant+ HRM tx , would it work ?

RE: TWI not working with ant+ hrm example on nRF52840.

v9joshi — Fri, 21 Jul 2023 19:16:20 GMT

Based on the logging module, it looks like this line of code-

ret_code = sd_softdevice_enable(&clock_lf_cfg, app_error_fault_handler, ANT_LICENSE_KEY);

which is inside nrf_sdh_enable_request() doesn't execute correctly. Which means the softdevice setup doesn't take place.

This is a line taken directly from the hrm_tx example. Is there a reason it might not work if the TWI module is enabled?

RE: TWI not working with ant+ hrm example on nRF52840.

v9joshi — Fri, 21 Jul 2023 18:17:52 GMT

I see. I'll try to take a look at the logs and figure it out. Thanks.

RE: TWI not working with ant+ hrm example on nRF52840.

Kenneth — Mon, 17 Jul 2023 13:06:00 GMT

Hello,

I don't see any other way than to debug this by using the logging module, and for instance catch any errors in the fault handler.

Kenneth