Turning off ACK in ESB on nRF52

RE: Turning off ACK in ESB on nRF52

Hung Bui — Wed, 18 Oct 2017 10:21:34 GMT

You are welcome Anders. Actually the code for ESB stack is open now, make it easier to understand how it works. Also if you want better documentation, have a look at the ESB chapter in the nRF24LE1. There are more detail there :)

RE: Turning off ACK in ESB on nRF52

Anders Strand — Wed, 18 Oct 2017 08:09:19 GMT

Thank you Hung. I have now turned on selective ack on the receivers, and set noack = 1 on the transmitted packet. It works great!

RE: Turning off ACK in ESB on nRF52

Hung Bui — Tue, 17 Oct 2017 13:35:59 GMT

Hi Anders,

selective_auto_ack is the configuration bit to tell if the ACK should be done automatically for all packets or it should be done base on noack bit in each packet (selectively) If selective_auto_ack = 0 then noack bit will be ignored.

RE: Turning off ACK in ESB on nRF52

Jan Tore Guggedal — Tue, 17 Oct 2017 10:39:59 GMT

Just for future reference: I experienced a similar error, and found out it is C-specific, as C does not allow assignment outside of functions. Declaration and initialization is allowed outside of functions, but not assignment.

RE: Turning off ACK in ESB on nRF52

Anders Strand — Tue, 17 Oct 2017 09:32:31 GMT

I am doing great, thanks!

It compiled when "tx_payload.noack = 1;" is put inside a function (for some reason).

Will i need to change any other config on either the PTX or PRX side to support no acks? I see that there is a field called "selective_auto_ack" in the nrf_esb_config_t struct, but i cannot find explanation for what it does. I have looked in the ESB user guide and the ESB blog post

RE: Turning off ACK in ESB on nRF52

Hung Bui — Tue, 17 Oct 2017 07:56:47 GMT

Hi Anders, How are you ? :)

Strange to see the error, I guess smth wrong with the declaration of nrf_esb_payload_t . Could you try to compile the stock example esb_ptx in a fresh SDK ? We have tx_payload.noack = false; in the main loop in the example and it compiled without problem.