ERRORSRC 0x1 on UART handler

[Victor Nascimento]

Hello,

On my custom board, I'm receiving chunks of UART data, without flow control, at 115200bps. Sometimes (its quite frequent now... sometimes after 10 chunks, sometimes after 100 chunks), im getting ERRORSRC 1 on APP_ERROR_HANDLER(p_event->data.error_communication); line.

My board doesn't include a 32kHz oscillator, and Im using NRF_CLOCK_LFCLKSRC_RC_250_PPM_250MS_CALIBRATION as my clock source (I don't care about current consumption). I'm also using SDK 8 with SoftDevice 8.0.0.

What would cause this? Any idea how to solve it?

edit Edited title so it makes more clear. Thanks @RK

[RK]

No you're not getting that error. That field in the event structure doesn't return an NRF_ERROR_* code (look in the documentation or just read the code), it returns the raw error from ERRORSRC in the UART.

If you then look at the nRF52 series documentation for ERRORSRC you'll see '1', which is the error code you're getting, is an overrun error, which, since you're trying to do no-flow-control at 115,200 is not very surprising.

You can probably run at that baud rate without flow control if the chip's not doing anything else, I'm going to guess you're trying it whilst using the softdevice and that's not going to work.

[Victor Nascimento]

I would call this no-luck else than luck. Everything were working so perfectly that made me think I had the right setup. About flow control, it's impossible for me as the device I'm communicating with doesn't provide it. How complex is to implement the timeslot api? Wouldn't I run to the same problem if the uart packet arrives when the radio is active?

Thanks for your time and effort.