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nRF24 / RF24

OSI Layer 2 driver for nRF24L01 on Arduino & Raspberry Pi/Linux Devices
https://nrf24.github.io/RF24
GNU General Public License v2.0
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RaspberryPi 4: No Communication with NRF24L01 #693

Closed Luddi96 closed 3 years ago

Luddi96 commented 3 years ago

Hi All,

I am currently having a problem getting the NRF24L01 running on Raspberry PI 4. I have crated a fresh RaspberryOS on the PI4, enabled SPI, done everything like stated here: https://tmrh20.github.io/RF24/Linux.html Manual install with SPIDEV When I run the "getting started", I get all 0xff (image 1) Then I take the same SD card, plug it into a PI2, power on, everything works and I get a reasonable output (image 2) Connections are 100% the same, I swapped all cables for fresh ones, swapped the modules nothing helped. Also a colleague of mine did this test with the same result. Is there maybe a problem with BCM2711 vs BCM2835? Thanks for some ideas and help! Images: https://www.dropbox.com/sh/uzt4msmqeh0ap48/AABbjTSYK2igxJ2mO6jTaE1ba?dl=0

Luddi96 commented 3 years ago

Ok, my bad.. Somehow I had 3 "defective" modules and only one good... what are the odds... The modules work all on a Arduino but only one of them on the PI4. But seems to be a HW problem, none of the Lib, so I close the issue.

2bndy5 commented 3 years ago

Check you wiring from RPi4 to nRF24L01 module. Usually when all SPI transactions fetch 0xFF for every byte, it's a wiring problem, or no power getting to the radio.

I've been testing the library with an RPi4 (also using a fresh image on the SD card with all updates), and I haven't been getting any problems.