RE: Simplest possible way to send/receive 3 bytes with nRF24L01+

fabio_leitao — Sun, 21 Sep 2014 18:18:57 GMT

Thank you very, very much Mr. Marek Novak. In the following week I will test these routines, and I am quite sure it will work. Best regards.

RE: Simplest possible way to send/receive 3 bytes with nRF24L01+

mnhs — Fri, 19 Sep 2014 10:03:28 GMT

I am slightly missing the initialization part. Or maybe I just can't see it. Basically, you need to initialize both modules before any communication. I have found one of my experiments with nRF24L01 chips (it works but there can be mistakes, it was not thoroughly tested ... and yeah, it is not commented - but you can easily follow the commands using datasheet). I am posting it as a image to keep the formatting right.

Initialization of TX:

Transmit of 32 bytes payload stored in "buffer":

Initialization of RX:

Unfortunately I can't provide you with "tutorial" code for receive because it is wrapped in my original software and thus a bit difficult to read, but basically you need to read STATUS register periodically and check for bit 6 (RX_DR). Then, you can read the RX FIFO - it is really easy, similar to transmit.

This is only "somehow-it-works" example. I was testing the range and performance with it and I needed to glue the parts of code as quickly as possible, in an hour or so. You will need to study the datasheet and adapt your code to your application.