STM32F4 Discovery

Overview

• STMicroelectronics STM32F4VGT6 Cortex M4 MCU, up to 168Mhz with floating point unit (FPU), 192 KB RAM, 1024KB Flash
• on-board stlinkv2 with SWD header (capeable of programming itself or a external MCU)
• ob-board power regulator for the MCU (3V or 5V Input) 3v input possible at vdd?
• 1 x user push button
• 4 x LED (orange, green, blue, red)
• 4 x UART (UART1, UART2, UART4, UART6)
• 1 x SPI
• 3 x I2c (I2C1, I2c2, I2c3)
• 1 x PPM input
• 4 x ADC input, which one is used for bat voltage
• 97 x 66 mm PCB
• 4 x status LED (USB OTG, stlink red, stlink green, USB power)
• CS43L22 audio codec with 3,5mm jack
• LIS302DL MEMS 3 axis accelerometer

Pinout

The Discovery has a male 100 pin (2x25pin on each side) pinout in 2,54mm on both sides of the board.

LED

LED_3 PD13 orange, above LIS302DL

LED_4 PD12 green, left of LIS302DL

LED_5 PD14 red, right of LIS302DL

LED_6 PD15 blue, below LIS302DL

Jumper

pin jumper

• JP1 current consumption of the MCU can be measured here
• CN3 set: stlinkv2 is connected to onboard MCU, unset: stlinkv2 is connected to SWD header to program external MCU

solder jumper

• SB17 bypass for JP1

Firmware Flashing

FLASH_MODE=DFU is set as default
stm32f4-discovery can be programmed in two different ways:

• with the MCU native (embedded in rom) DFU USB bootloader over the micro usb ab connector
  • required hardware: usb to micro and usb to mini usb cable
  • required software: dfu_util tool (present
  • put MCU in DFU mode: connect mini and usb to pc, connect pin BOOT0 with 3V, press reset button(LED LD7 should light up now), disconnect BOOT0 to 3V

• with onboard stlinkv2 over SWD
  • required hardware: usb to mini usb cable
  • required software: st_flash and st_util
  • more information: STLink page