nrf24 address setup

RE: nrf24 address setup

ovrebekk — Mon, 24 Sep 2018 11:35:28 GMT

Yes, that looks correct, just a couple of things to keep in mind:

1) To use the radio remember to set the PWR_UP bit in the CONFIG register. Without this the radio will not start up, but you can still access the config registers.

2) After uploading a TX packet to the FIFO you need to pulse the CE line for at least 10us to send the packet. Alternatively you can keep CE high all the time, and the radio will automatically send any packet as soon as you upload it to the TX FIFO.

Best regards
Torbjørn

RE: nrf24 address setup

ulao — Fri, 21 Sep 2018 13:13:32 GMT

Yes that does explain things. So I'd want to do this sort of thing.

Send {0x25, 1}// send only once to set channel. using spi command 0x20 address 5, channel 1.

Send {0x3A,0xBC,0xDA,0xBC,0xD7,0x01} // send only once to set tx pipe address. ABCDABCD71

send {0xA0,1,2,3,4,5}//loop this to send 1,2,3,4,5 constantly.

Do I have that about right?

RE: nrf24 address setup

ovrebekk — Fri, 21 Sep 2018 11:25:12 GMT

The 5-bit address you refer to is the address of the configuration register that you want to read/write in the nRF24L01+ radio. The same as the address column in the register map table on page 57 of the nRF24L01+ product specification.

This is not to be confused with the 3, 4 or 5 byte TX/RX address used when sending and receiving packets.

Sending {0x25, 1} over the SPI bus basically means "set configuration register 0x05 to 1", which means you are setting the RF channel to 1.

The TX address is configured through configuration register 0x10, and the RX pipe 0 address is set through configuration register 0x0A.

Hopefully that made it clearer. If not just let me know what you are still unsure about ;)

Best regards
Torbjørn