NRF24L01 module trouble

Great! Glad it's sorted! Not sure why you get the 'TX not received' either, but at least it's a good start!

It could be it's an issue with SPI on the STM32F3 - I guess possible issues could be:

• SPI CPOL/CPHA wrong
  
• nCS (the last arg to SPI.send) is raised too soon (although I thought we'd tested for that by connecting nCS to MISO) and sending some bytes
  
  

Hopefully someone with a storage scope or signal analyser might be able to figure out what's up...