howto identify nrf24l01

[Adib]

hello, on my board the nrf24l01 is optional.

what is the preferred solution to identify if a nrf24l01 is present.

I tried to read the status register. But sometimes I have a xtalk on MISO line that seems to be a NRF24L01 present.

Do you have a better (proofed) algorithm.

best regards, Adib

[Håkon Alseth]

Hi,

If you have a lot of cross-talk on your SPI lines, you could try to read a multi-byte register, like the RF address on PIPE0 (default value: 0xe7e7e7e7e7).

What SPI frequency are you operating on? if it's very high, you could also try to go down in frequency to see if this helps.

-H

[Guest]

yo, I was just thinking to use that and in addition the RX_ADDR_P1 register which should read 0xC2C2C2C2C2 after reset. This gives an stronger identificator.

Thx, for your answer!

Adib.