Arduino for STM32

Thanks for helping me understand better! I found a library for 'HAL Drivers' in the source for the version of Marlin currently running on the board. Is this a bootloader? Can I use this somehow to flash my own program on the board without the need to mess with the boot pins? As you said, perhaps I n...

As far as I know, this requires the hardware boot pin to be pulled (low or high I don't remeber), right? Which is not happening, it's all software. I have read that STM32duino bootloader has a 'key' you can send (leaf) that will active it. How does one send this, just ascii encoded over UART like ty...

Hello! I've got a 3D printer (Anker M5) and I want to see if I can flash new firmware on it. The board uses the ST32F407 and runs a bastardised version of Marlin. I know that I can flash it using DFU mode, but that needs some soldering to set the boot pin and I'd like to find a solution others can a...