STM32F4 Discovery
This page is for the STM32F4 Discovery board with STM32F407VGT6, STM32F4 Disco is a familiar board with STM32F401VCT6, do not use this Files for the Disco board !
Overview
- STMicroelectronics STM32F4VGT6 Cortex M4 MCU, up to 168Mhz with floating point unit (FPU), 192 KB RAM, 1024 KB Flash
- on-board STLinkv2 with SWD header (capable of programming itself or an external MCU)
- ob-board power regulator for the MCU (3V or 5V Input)
- 1 x user push button
- 4(5) x LED (orange, green, red, blue, green)
- 6 x UART (UART1, UART2, UART3, UART4, UART5, UART6)
- 3 x SPI (SPI1, SPI2, SPI3)
- 2(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 red, USB green, power, USB OTG green, USB OTG red)
- LIS302DL MEMS 3 axis accelerometer on SPI1
Pinout
The Discovery has a male 100 pin (2x25pin on both sides, also accessible on both sides of the pcb) pinout.
| Pin # | Name | Type | Description | Color |
|---|---|---|---|---|
| PD13 | LED_3 | I/O | above LIS302DL | Orange |
| PD12 | LED_4 | I/O | left of LIS302DL | Green |
| PD14 | LED_5 | I/O | right of LIS302DL | Red |
| PD15 | LED_6 | I/O | below LIS302DL | Blue |
| PA9 | LED_9 | I/O | same as USB power (VBUS), needs to be enabled in stm32f4_discovery.h | Green |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PB6 | UART1 TX | Out | UART1 Serial Output |
| PB7 | UART1 RX | In | UART1 Serial Input |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PD5 | UART2 TX | Out | UART1 Serial Output |
| PD6 | UART2 RX | In | UART1 Serial Input, also used for Spektrum input |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PD8 | UART3 TX | Out | UART1 Serial Output |
| PD9 | UART3 RX | In | UART1 Serial Input |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PC10 | UART4 TX | Out | UART1 Serial Output |
| PC11 | UART4 RX | In | UART1 Serial Input |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PC12 | UART5 TX | Out | UART1 Serial Output |
| PD2 | UART5 RX | In | UART1 Serial Input |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PC6 | UART6 TX | Out | UART1 Serial Output |
| PC7 | UART6 RX | In | UART1 Serial Input |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PB3 | SPI1 SCK | I/O | SPI1 Serial clock |
| PB4 | SPI1 MISO | I/O | SPI1 Master In Slave Out |
| PB5 | SPI1 MOSI | I/O | SPI1 Master Out Slave In |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PB3 | SPI2 SCK | I/O | SPI2 Serial clock |
| PB4 | SPI2 MISO | I/O | SPI2 Master In Slave Out |
| PB5 | SPI2 MOSI | I/O | SPI2 Master Out Slave In |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PB10 | SPI3 SCK | I/O | SPI3 Serial clock |
| PB11 | SPI3 MISO | I/O | SPI3 Master In Slave Out |
| PB12 | SPI3 MOSI | I/O | SPI3 Master Out Slave In |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PE2 | SPI SS0 | I/O | SPI Select Slave0 |
| P"7 | SPI SS1 | I/O | SPI Select Slave1 |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PB8 | I2C1 SCL | I/O | I2C1 Serial Clock |
| PB9 | I2C1 SDA | I/O | I2C1 Serial Data |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PB10 | I2C2 SCL | I/O | I2C2 Serial Clock |
| PB11 | I2C2 SDA | I/O | I2C2 Serial Data |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PA8 | I2C3 SCL | I/O | I2C3 Serial Clock |
| PC9 | I2C3 SDA | I/O | I2C3 Serial Data |
Note: is disabled in stm32f4discovery.h, PA8 is used as Spektrum bind pin, PC9 is used as PPM input
| Pin # | Name | Type | Description |
|---|---|---|---|
| PB1 | AUX1 | I/O | ADC_1 |
| PC1 | AUX2 | I/O | ADC_2 |
| PC4 | AUX3 | I/O | ADC_3 |
| PA4 | BATT | I/O | ADC_4, is used for Battery voltage |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PE9 | PWM0 | Out | Servo 1 |
| PE11 | PWM1 | Out | Servo 2 |
| PE13 | PWM2 | Out | Servo 3 |
| PE13 | PWM3 | Out | Servo 4 |
| PE5 | PWM4 | Out | Servo 5 |
| PE6 | PWM5 | Out | Servo 6 |
| PA3 | PWM6 | Out | Servo 7 |
| PA2 | PWM7 | Out | Servo 8 |
| PA1 | PWM8 | Out | Servo 9 |
| PA0 | PWM9 | Out | Servo 10 |
| PB14 | PWM10 | Out | Servo 11, Can not be used if SPI2 is active |
| PB15 | PWM11 | Out | Servo 12, Can not be used if SPI2 is active |
| Pin # | Name | Type | Description |
|---|---|---|---|
| PC9 | PPM | In | PPM input |
Jumper
| Pin # | Name | Type | Description |
|---|---|---|---|
| JP1 | JP1 | Switch | MCU Current can be measured here |
| CN3 | CN3 | Switch | closed: STLinkV2 is connected to onboard MCU, open: is not connectec to onboard, only external header |
| Pin # | Name | Type | Description |
|---|---|---|---|
| SB17 | SB17 | Switch | Bypass for JP1, close this for security ! (if JP1 gets loose) |
Firmware Flashing
FLASH_MODE=DFU is set as default
STM32F4 Discovery can mainly be programmed in two different ways:
DFU
- 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 external software: dfu-util
- push MCU in DFU mode: connect mini and micro USB to PC, connect pin BOOT0 with 3V (if it doesnt work also BOOT1 (PB2) with GND), press reset button(LED LD7 should light up now), disconnect BOOT0 to 3V
- more information: DFU page