STM32

Features

• STM32 Blue Pill and STM32 Black Pill Boards

Black Pill Board Features

Not pin compatible with Blue Pill due to power pin locations

• Use on BLACK-PILL-HUB
  • Can't be used on BLUE-PILL-HUB card without modifications
• STM32F401CCU6 or STM32F411CCU6 CPU
  • STM32F401CCU6
    • 84 MHz CPU clock
    • 256 KB Flash
    • 64 KB SRAM
  • STM32F411CCU6
    • 100 MHz CPU clock
    • 512 KB Flash
    • 128 KB SRAM
  • 3.3V regulator
  • 2x12-bit, A/D converter
  • 7-channel DMA controller
  • SPI, I2C, UART interfaces
  • 7 timers
• SPI ROM footprint
  • Fits an W25Q32JVSSIQ
  • 32 Mbit SPI Flash ROM,
• USB-C
• Reset button
• Power LED
• PC 13 LED
• SWD connector
• Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.

• WeAct Black Pill V1.2 - Helpful page

Black Pill Reserved Pins

• PA0 - On-board USER KEY - needs INPUT_PULLUP
• PC13 - On-board LED
• PB2 - BOOT1
  • Pulling this pin down by external hardware causes the board to boot to serial
  • Can be ignored by unplugging USB (power) while holding both reset and BOOT1 buttons on the Black Pill card
  • Release reset button first
• PA11 - USB-M
• PA12 - USB-P
• PA9 - Serial TX1
• PA10 - Serial RX1

Blue Pill vs Black Pill Pinout

• Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.
• Upper right pin is GND on Blue pill card, but is 5V on Black pill card
• Reset is on a different pin
• Some IO pins are om different spots

Arduino IDE

• Hardware files to support STM32 boards, on Arduino IDE 1.8.x including LeafLabs Maple and other generic STM32F103 boards
  • Arduino STM32 Wiki
  • Installation
• Arduino Alternative - STM32 Blue Pill Programming Via USB

Uploading Code to Blue Pill

• FTDI connection to Blue Pill Hub FTDI connector
  • FTDI TX (to Blue Pill RX) (PA10 pin on STM32)
  • FTDI RX (to Blue Pill Tx) (PA9 pin on STM32)
• Set Switch (or jumper) on Blue Pill module set towards center of card to upload card to board

• In Arduino IDE,
  • Tools
    • Board "Generic..."
    • Upload method: "Serial..."
    • Port: [the comm port]

• Upload code
  • Takes a while
• Set Switch (or jumper) on Blue Pill module set towards edge of card to run
• Press reset button

Black Pill Programming

DFU Programming

• Steps from Programming|Program STM32 Black Pill (STM32F401 / F411) with Arduino IDE (Windows OS)
  • Add the URL to Additional Board Manager URLs text box:
    • https://github.com/stm32duino/BoardManagerFiles/raw/master/STM32/package_stm_index.json
  • Go to Tools > Board > Boards Manager
  • Search for STM32, select latest version and click Install.
  • Download and install STM32CubeProg from ST.com: [1]
  • Start the STM32CubeProg
  • From the Tools > Board > STM32 Board, select Generic STM32F4 series
  • Select Tools > Board Part Number > BlackPill F411CE
  • Under USB Support, select CDC (generic "Serial" supersede U(S)ART)
  • Under Upload method, select SMT32CubeProgrammer(DFU)
  • Use the onboard BOOT0 and NRST button to put the board into bootloader mode:
    • press and hold the BOOT0 button
    • press and release NRST (reset) button to power cycle the processor
    • release BOOT0 button
  • Upload sketch

Other Programming

• ST-LINK V2
• FLASHER-STM32 - STM32 Flash loader demonstrator (UM0462)
• From AN3155

Blue Pill Card Boot Jumpers

Annotated

Mechanicals

Blue Pill Mechanicals

Black Pill Mechanicals

Schematic

Blue Pill Card Schematic

Black Pill Card Schematic

Schematic