There is a boot loader on the stm32 chips? I asked the STM forum on the official STM webpage and they said there's no boot loader needed to program the STM32 MCU's?I think the bootloader on your blue pill must be corrupt and you should concentrate on fixing it. If you build your own it will need the bootloader code so you need to know how to upload it.
Hiis my schematic fine? anyone?
Thank you thank you thank you!Hi
The schematic has enormously improved!
Some finishing touches....
Swap the positions of pins 32 and 17 on U1, so that pin 32 is at bottom and pin 17 is at top of symbol.
Flip the whole crystal resonator circuit so the i/o pins are on the left and ground is on right.