RE: TWI sends only the first read access

Sami — Fri, 13 Mar 2020 09:00:40 GMT

That was indeed the root cause of the problem! Indeed the RXREADY event must be cleared. I assumed that it is cleared when the RXD register is read. The following fix solved the problem:

    data = NRF_TWI1->RXD;

    NRF_TWI1->EVENTS_RXDREADY = 0;   // Clear the event!

    return data;

Thank you for your help Dmitry, I have been debugging this for hours 🙂

RE: TWI sends only the first read access

Dmitry — Fri, 13 Mar 2020 08:55:27 GMT

Hi,

are you clearing EVENTS_RXDREADY somewhere?