Arduino for STM32

I've reworked how my USB Composite library allocates endpoints to allow for more devices to be composited together. Previously, RX and TX endpoints weren't allowed to share the same number. But there is no reason why they can't do that. So, now they can, though only within the same plugin. I also re...

I am guessing they are re-labeled c6 units. They have the memory of a c6, and they only have two USARTs, just as the c6 does.

I ordered two blue pills in the spring and when I finally got around to flashing them, I found they had fake stm32f103c8 units on them: as far as I can tell, they are c6 units with 32K flash and 10K ram. I managed to port the bootloader to the unit: https://github.com/arpruss/STM32duino-bootloader a...