Question
[STM32F103] External circuit from remote BOOT activation
Hello,
I'd like to design PCB's for ordered MCU's (I do not have them yet, so I cannot perform any tests...)
I wish to perform full flashing without touching the PCB, using Bluetooth (HC-05).
I'm looking for a way to acitvate bootloader mode remotely. I know that it is possible from application code, but i'm interested in hardware way. I read somewhere about external RC circuit connected to BOOT0. It work in way, that before reset this external capacitor is loaded using any other external pin (controlled from SW), that after software reset, high state is assured on BOOT0. The time constant is the most important in such case.
I'm looking for the exact schematic or element values. Does anyone have?