Problem with nrf24l01 ACK Comunication, can't make it to work

RE: Problem with nrf24l01 ACK Comunication, can't make it to work

Masha Waleed — Fri, 22 Mar 2024 21:06:14 GMT

Hello MrCerrajo,
Please let me know if you ever solved your problem as i am facing the same issue and its really stressing.

Thanks !!

RE: Problem with nrf24l01 ACK Comunication, can't make it to work

Kenneth — Sun, 10 Mar 2024 17:51:53 GMT

[quote user="Masha Waleed"]I want to use the auto ack packet with payload in order to achieve a crude two way communication between two NRFs, will this minimal setup allow for this test?[/quote]

Then you also need to write to the Feature register on both PTX and PRX:

RE: Problem with nrf24l01 ACK Comunication, can't make it to work

Masha Waleed — Fri, 08 Mar 2024 20:46:44 GMT

Hello Kenneth,
I want to use the auto ack packet with payload in order to achieve a crude two way communication between two NRFs, will this minimal setup allow for this test?

RE: Problem with nrf24l01 ACK Comunication, can't make it to work

Kenneth — Wed, 06 Mar 2024 23:29:40 GMT

You are right that you can set all those, but when you power up the nRF24L01 many of the default settings can be used without changes, so you only need to do those changes I mentioned to get a minimal test with ack. After that work you can do more changes one by one.

Kenneth

RE: Problem with nrf24l01 ACK Comunication, can't make it to work

MrCerrajero — Wed, 06 Mar 2024 14:48:57 GMT

As I understand it from the datasheet, what needs to be done to use the ACK is: In the TX:

Enable CRC
Set TX Address size and the TX Address itself
Set the number of retransmit retries for ACK
Enable data pipe 0 for receiving the ACK
Put the address of pipe 0 the same as the TX Address
Then the other configuration stuff like power, channel, data rate, TX Mode

In the RX:

Enable CRC
Enable data pipe 1 (the one I'm using for communication)
Enable ACK on that pipe 1 (EN_AA)
Size of address
Set up the address of data pipe 1, the same as the TX
Payload size on data pipe 1
Other stuff like channel, power....

RE: Problem with nrf24l01 ACK Comunication, can't make it to work

Kenneth — Wed, 06 Mar 2024 09:01:50 GMT

Hello,

If you simply power up the nRF24L01 chip, then by default the chip is configured to for instance use acknowledgement.

The minimum configuration on the PRX after power up is to set the operation mode to RX and the rx payload width of pipe0 to specific length (e.g. 3), then write PWR_UP bit to 1 (wait ~2ms), and set CE to 1.

The minimum configuration on the PTX after power up is write PWR_UP bit to 1 (wait ~2ms), then write the TX payload with a specific length (e.g. 3), and toggle CE to start transmission.

Best regards,
Kenneth