nrf24l01+ crc problem

RE: nrf24l01+ crc problem

LutzStiegler — Wed, 17 Apr 2019 19:11:12 GMT

OK - success.

It worked with noack method. Than I went step by step backwards until normal ESB with ack and now also that worked. I got curious what has actually changed and found the problem: When I clock in the payload at exactly the same size as payload size in RX_PW_P0 it works. If the size doesnt match (actual payload to transmit smaller than value in RX_PW_P0) it doesnt work. That is a bit surprising as I havent interpreted the datasheet like this and it worked on Arduino - maybe something in the library that added the missing payload with zeros ... I will check. But now I know ...

RE: nrf24l01+ crc problem

LutzStiegler — Tue, 16 Apr 2019 12:40:10 GMT

OK, will test. What should be the status of REG_EN_AA and EN_CRC for on PTX and PRX for that test?

RE: nrf24l01+ crc problem

Kenneth — Tue, 16 Apr 2019 10:24:00 GMT

Can you try the noack method? It would help understand if it's indeed crc or not.

Best regards,
Kenneth

RE: nrf24l01+ crc problem

LutzStiegler — Mon, 15 Apr 2019 19:50:59 GMT

Hi Kenneth,

I have set REG_EN_AA to 0x00 on PTX and PRX side. But I have not send the payload with W_TX_PAYLOAD_NOACK method.

Thanks for your help.

Lutz

RE: nrf24l01+ crc problem

Kenneth — Mon, 15 Apr 2019 18:30:57 GMT

Have you tried sending payloads with the noack command? Make sure to add this feature on both PTX and PRX before you use it, this can be used to understand if it's actually the crc or/and other issue.

Best regards,
Kenneth