Dobrica Pavlinušić's random unstructured stuff
Blue Pill: Revision 11


stm32f103 board

arduino boot loader

triple usb serial

Function Pin and Port
USART3 TX PB10
USART3 RX PB11
USART2 TX PA2
USART2 RX PA3
USART1 TX PA9
USART1 RX PA10

USART TX pin RX pin special speed sensor linux
3 PB10 PB11   9600 MH-Z19B /dev/ttyACM1
2 PA2 PA3   9600    
1 PA9 PA10 BOOT=0 9600    

dpavlin@nuc:/nuc/stm32/pill_serial$ cat flash.sh
sudo ../stlink/build/Release/st-flash write src/pill_serial.bin 0x08000000

lower serial speed to 9600 so we can use slow sensors on it: serial-speed.diff

openocd with raspberry pi

http://git.rot13.org/?p=openocd-rpi2-stm32;a=blob;f=openocd-rpi.txt

clones

https://github.com/thanks4opensource/buck50/issues/2

https://github.com/keirf/Greaseweazle/wiki/STM32-Fakes

dpavlin@nuc:/nuc/stm32/Greaseweazle$ wget https://github.com/keirf/Greaseweazle/releases/download/v0.22/Greaseweazle-v0.22.zip

dpavlin@nuc:/nuc/stm32/Greaseweazle$ unzip Greaseweazle-v0.22.zip Greaseweazle-v0.22/alt/Blinky_Test-v0.22.hex
Archive:  Greaseweazle-v0.22.zip
  inflating: Greaseweazle-v0.22/alt/Blinky_Test-v0.22.hex

write it to flash using openocd

> flash write_image erase /nuc/stm32/Greaseweazle/Greaseweazle-v0.22/alt/Blinky_Test-v0.22.hex 0 ihex
auto erase enabled
wrote 5120 bytes from file /nuc/stm32/Greaseweazle/Greaseweazle-v0.22/alt/Blinky_Test-v0.22.hex in 0.299529s (16.693 KiB/s)

serial output is on the programming interface at pins A9/TX and A10/RX: Not via the USB port!