Spence Konde (aka Dr. Azzy)

You sure this isn't just the bogus programmer bug that's been there for ages, and you getting thrown off by the order sensitivity of the phenomenon? It is triggered as...

@MCUdude consider jacking the new the version of Wire from DxCore, you need to add a tools submenu to select whether build,extra_flags contains -DTWI_MORS (master or slave ) or -DTWI_MANDS...

Yeah the timeout is enabled by default. We (myself and the main developer who did the rewrite, I'm not going to tag him over here because I've been tagging him...

Likely noise on the power rail caused by the inductive load of the DC is resetting the OLED. Use separate supply for the motor, or more aggressive decoupling between motor...

It's because the standard pinout was chosen to make logical sense, it starts at PA0 and proceeds counterclockwise, and the ports and pins within the ports are in order, while...

@MCUdude You still haven't ditched the "Empty.hex" thing? I got rid of that years ago - see the boards and platform.txt for either of my cores. If you're not using...

I think this core sets the timer up initially in SPLIT MODE in order to get 3 extra 8-bit PWM channels, since analogWrite only supports 8-bit PWM anyway. To put...

Any slave functionality you manage to make work is an achievement. It should come as no surprise that is is difficult to make it interoperate with the SPI.h library and...

Though the fact that you've cobbled together a working solution seems to contradict that ;-)

Just a quick comment over here - if at all possible, I would try to make one device always be the master and se stock SPI library, and the other...