Developing a universal module

nusbr wrote: Could not bind with Landbow X-Dart. Latest Build and Multimodule installed.

nusbr wrote: Have not other "V202" compatible quad. Is there a special Version of ATMEL (on Multimodule) needed for proper working, or does it work with all Versions?

Hubsan and Walkera works fine.

Best regards

nusbr wrote: enable-cyrf6936=S0
has_pa-cyrf6936=1

nusbr wrote: enable-cc2500=S3
has_pa-cc2500=1

nusbr wrote: Yes i have used the Original DEVO8S CYRF Module

  set |= 0xf;
  set ^= toggle;

  u8 set = 0; // CE of target - NEVER set

btoschi wrote:

nusbr wrote: Yes i have used the Original DEVO8S CYRF Module

In case its still in Devo, and not soldered to the universal module, you should not configure it to be accessed via universal module. ("Sx" lines in hardware.ini always means that this module's CSN line is accessible via universaml module). Just comment them out. (Since I'm building with my own changes, I'm using recent source code, just like the nighlies - I think the behavior here changed a while ago).

Regarding the rest of your setup, you're using the very same components like me - as such expect the same issues
I'm currently fiddling with the code handling module switching - my local changes allow me to disable installed modules by not listing them in hardware.ini - and removing CC2500 lines helps getting NRF being detected and working properly most times.
Edit:
In PROTOCOL_SetSwitch(), right before the for-loop:

  set |= 0xf;
  set ^= toggle;

(you can comment out the for-loop then)

Still sometimes 'nothing' gets detected (Debug output shows totally garbage on all MISO readings then, no CYRF, no MultiModule, no NRF, no A7105), sometimes only NRF is not detected (SPI_ConfigSwitch() is failing right before NRF reset gets called - making the checks fail and marking the chip as not being available).
Edit: I've found another fix for NRF not being detected:
In PROTOCOL_SetSwitch():
(replace the line with u8 set by this one)

  u8 set = 0; // CE of target - NEVER set

But these two cases are The remaining case is easily solved by turning transmitter off and on one or two times - just like PB already described.

Edit:
To clarify: My CC2500 module is not detected/working at all (I'm getting the 'CC2500 module missin' message when enabled in hardware.ini), but at least I can use the other RF modules on that universal module w/o issues with these changes.
And I suspect that I've done a bad solder job on the CC2500 ... I'll have to re-check that (lesson learned: next time first check any RF module with arduino before soldering onto something )

I'll discuss with PB if my fix is okay ...