Dobrica Pavlinušić's random unstructured stuff

Blue Pill: Revision 6

{file: serial-speed.diff}

stm32f103 board

^ arduino boot loader

* https://github.com/rogerclarkmelbourne/Arduino_STM32/wiki/Flashing-Bootloader-for-BluePill-Boards

^ triple usb serial

* https://satoshinm.github.io/blog/171223_stm32serial_triple_usb-to-serial_adapter_using_stm32_blue_pill.html
* https://github.com/satoshinm/pill_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 | | |

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