Hi I got a STM32F0 discovery board to play with. I connected it(slave) to photon(master) and was trying to use SPI to turn on an LED that was connected to PC6 of STM32. The STM is not connected to any IDE so the only way to talk to it is through SPI from photon.
I understand in order to do that I need to configure a bunch of registers of STM but question is how to do that through SPI messages?
Here’s the reference manual for STM32F0xx.