Blue Button STM32F103RET6

⚠️ Work in progress. Depends on STM32F1 support in MicroPython.

MicroPython board definition files for the unbranded blue button STM32F103RET6 dev board.

Brand: Unbranded/Generic

Markings: STM32°

You can buy one for around $7 USD on AliExpress

Build and deploy the firmware:

⚠️ Most likely does not work yet.

• Clone the board definitions to your MicroPython ports/stm32/boards folder.

cd micropython/ports/stm32/boards
git clone https://github.com/mcauser/BLUE_BUTTON_F103RET6.git

• Disconnect the board from USB
• Set BOOT0 jumper to ON (BT0->3V3)
• Connect the board via USB

cd micropython/ports/stm32
make BOARD=BLUE_BUTTON_F103RET6
make BOARD=BLUE_BUTTON_F103RET6 deploy

• Disconnect the board from USB
• Set BOOT0 jumper to OFF (BT0->GND)
• Connect the board via USB

screen /dev/tty.usbmodem1422

Specifications:

• STM32F103RET6 ARM Cortex M3
• 72MHz, 90 DMIPS / 1.25 DMIPS / MHz
• 2.0V - 3.6V operating voltage
• 8MHz system crystal
• 32.768KHz RTC crystal
• 2.54mm pitch pins
• JTAG/SWD header
• 512 KByte Flash, 64 KByte SRAM
• 3x SPI, 5x USART, 2x I2S, 2x I2C
• 1x SDIO, 2x CAN
• 51 I/Os almost all 5V-tolerant
• 1x USB 2.0 FS
• RTC battery CR1220
• 3x ADC (12-bit / 16-channel)
• 2x DAC (12-bit)
• 3x general timers, 1x advanced timers
• 3.3V LDO voltage regulator, max current 300mA
• Micro USB for power and data
• Blue user LED (PC13)
• 2x jumpers for bootloader selection
• Reset button
• 2x15 side pins + 2x4 top pins
• M3 mounting holes

Links:

• STM32F103RE on st.com
• Buy on AliExpress or search for "STM32F103RET6"
• STM32F103RET6 schematics
• STM32F103RET6 dimensions
• STM32F103RET6 pcb top
• STM32F103RET6 pcb bottom

License

Licensed under the MIT License.