Hey Nige/peeps, the stm32 modules were on the doorstep today, so I'm gonna have a try and see if I can get the 'duino Ide to burn these things, will let you know if I get anywhere.
I notice there are 2 xtals on the board, one maybe for the uart?
Edit: Sussed, I managed to program one of these modules, I burned the blink sketch using the serial programming interface and it works, changing the flash rate works too.
Now to see if I can burn the maple bootloader to this device so I can use its Usb port to program it.
Looks like some of my 'duino projects are going arm 32 bit.
Aha Ok mike this chip has a built in Rtc, that'll be usefull, I'll look that up and see how to use it with the 'duino Ide.
The hackaday article was the most useful aid for this little test.
Burt the arduino Led_built_in has never failed for me, the Ide seems to know which is the correct pin, must be in the processor file.