stm32f373 nrf24l01+ Cannot set tx addr after flush_tx

RE: stm32f373 nrf24l01+ Cannot set tx addr after flush_tx

Hung Bui — Fri, 05 Aug 2016 08:46:42 GMT

I'm glad to hear the issue got solved. Happy coding! :)

RE: stm32f373 nrf24l01+ Cannot set tx addr after flush_tx

Joe Wright — Thu, 04 Aug 2016 13:41:57 GMT

I got a logic analyser and found some timing issues with the library I was using. Especially, CSN was coming up just before the final clock pulse had finished.

Added a delay, all working now.

RE: stm32f373 nrf24l01+ Cannot set tx addr after flush_tx

Joe Wright — Fri, 29 Jul 2016 12:30:43 GMT

If I do things like put a delay before setting a value, it sticks more often than not. I'm therefore thinking that my problem is more to do with how I've configured the SPI or how I'm doing the transfers. Will investigate more then close this with the answer if I find it. Bit of a step up form using Arduinos and Teensy's...

RE: stm32f373 nrf24l01+ Cannot set tx addr after flush_tx

Joe Wright — Thu, 28 Jul 2016 11:13:42 GMT

Ok, it seems I'm getting some pretty strange behaviour. Depending on where I set it in the sequence of initialisation, it either works or doesn't. Right after FLUSH_TX and the rx_addr_p0 cannot be set. But after clearing interrupts both can be set. But then later on neither can be set. Will continue trying to work out what is going on...

RE: stm32f373 nrf24l01+ Cannot set tx addr after flush_tx

Joe Wright — Thu, 28 Jul 2016 09:20:17 GMT

When I read it I get the value that was set prior to the first FLUSH_TX. As a quick fix I've edited the default values in the initialisation code to reflect what I wanted to set it to. But I haven't got a connection working yet and so I don't want any unexplained elements in case that's what's preventing the successful connection.

RE: stm32f373 nrf24l01+ Cannot set tx addr after flush_tx

Hung Bui — Thu, 28 Jul 2016 08:44:51 GMT

@Joe: What happened when you try to set the address after you call FLUSH_TX? If you read it out, what do you have ?