Dobrica Pavlinušić's random unstructured stuff
Blue Pill: Revision 13
The-Generic-STM32F103-Pinout-Diagram.pdf



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!

pi@pihdmi:/nuc/stm32/buck50 $ microcom -p /dev/ttyUSB1
connected to /dev/ttyUSB1
Escape character: Ctrl-\
Type the escape character to get to the prompt.

** Blinky
** Blinky Test **
** Keir Fraser <keir.xen@gmail.com>
** https://github.com/keirf/Greaseweazle
Serial = ff48:0670:8967:5655:4740:6706
Flash Size  = 128kB
Device ID = 0x0000
Revision  = 0x0000
Testing I2C1... OK
Testing I2C2... OK
Testing SPI1... OK
Testing SPI2... OK
Testing TIM1... OK
Testing TIM2... OK
Testing TIM3... OK
Testing TIM4... OK
DMA Test #1... OK
DMA Test #2... OK
DMA Test #3... OK
DMA Test #4... OK
Testing 64kB Flash... OK
Enable TIM4 IRQ... .OK
Testing 20kB SRAM (endless loop)................................................................