ESB 'noack = true' packets never arrive at receiver (NRF52, SDK 15.3)

RE: ESB 'noack = true' packets never arrive at receiver (NRF52, SDK 15.3)

Joakim Jakobsen — Wed, 09 Oct 2019 06:04:33 GMT

I'm glad you figured it out! And thanks for sharing your solution so that others might benefit from it!

Best regards.

RE: ESB 'noack = true' packets never arrive at receiver (NRF52, SDK 15.3)

Marcin Sleziak — Tue, 08 Oct 2019 17:10:37 GMT

Hi Joakim, after stripping the code to bare metal I've found out what the problem was.

Before each transmission I was requesting the HF clock and releasing it when the transmission was done. What I did not account for was the time needed to start up the clock.

It was a lucky coincidence that everything worked fine with ACK enabled.

I've simply added

    while (!nrf_drv_clock_hfclk_is_running())
    {
    }

And everything works as expected. My apologies for this.

I'll convert my code to use the clock_clk_started_notify now that I know what the issue was.

RE: ESB 'noack = true' packets never arrive at receiver (NRF52, SDK 15.3)

Joakim Jakobsen — Tue, 08 Oct 2019 13:38:08 GMT

Hi!

Do you have the same configuration on both sides?
If not, could you try using the same configuration on the receiver side as well and see if you can receive data?

Best regards,
Joakim