SPI returns 0x0F on any request after random period of time

[Sergy]

Hi, im using nRF24L01+ to constantly transmit data and all working fine, but at some point SPI fails and the only returned values I get are 0x0F - doesnt matter which register I try to read or write. Any idea why is that happening?

Thanks, Sergey

[Sergy]

Hi Håkon,

Yes indeed Im flushing in case I have received wrong length package, unfortunately it doesnt solve the problem. Any other ideas?

Thanks, Sergey

[Sergy]

Håkon, another problem I just discovered that if I set power to 0dBM after first transmit radio get into the same panic mode. So the only possible value is -6dBm.

Regards, Sergey

[Håkon Alseth]

Hi Sergey,

That sounds very strange. Can you take a picture of the module that you are using, and in addition: a close-up picture of the nRF-device?

BR Håkon

[Sergy]

Hi Håkon,

here is the picture of the module - standard module from ebay. Markings on the chip read as follows: NRF A 24L01+ 083DAE

Regards, Sergey

[Håkon Alseth]

Hi,

Are you using two of those modules for communication? if yes; how far are they from each other?

Those modules have a PA on them, which will then send with 20-30 dBm output. The receiver LNA (low-noise-amp) will be saturated at >0 dBm (0 dBm = max input), which can explain why you are getting strange behavior.

Best regards Håkon