STM32F3Discovery

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Support for the STM32F3Discovery board

When using this board with RIOT, set the BOARD variable to stm32f3discovery in your Makefile. If you follow the standard RIOT project structure, your Makefile should look like this:

# name of your application
APPLICATION = hello-world

# Change this to your board if you want to build for a different board
BOARD ?= stm32f3discovery

# This has to be the absolute path to the RIOT base directory:
RIOTBASE ?= $(CURDIR)/RIOT

include $(RIOTBASE)/Makefile.include

Support for the STM32F3Discovery board

Overview

The STM32F3Discovery is cheap evaluation board designed by ST for pushing the STM32F3 microcontroller to a broad audience. It features an STM32F303VC microcontroller with 48Kb of RAM and 256Kb flash memory running with up to 72MHz. Additionally it provides USB host capabilities, 8 LEDs and sensors for a 9-degree of freedom initial measurement unit (3-axis accelerometer, 3-axis gyro and 3-axis magnetometer).

Hardware

STM32F3discovery image

MCU

MCU	STM32F303VC
Family	ARM Cortex-M4
Vendor	ST Microelectronics
RAM	48Kb (40Kb RAM + 8Kb CCM RAM)
Flash	256Kb
Frequency	up to 72MHz (using the on-board 8MHz Oszillator of the ST-Link)
FPU	yes
Timers	10 (9x 16-bit, 1x 32-bit [TIM2])
ADCs	4x 12-bit
UARTs	5
SPIs	3
I2Cs	2
Vcc	2.0V - 3.6V
Datasheet	Datasheet
Reference Manual	Reference Manual
Programming Manual	Programming Manual
Board Manual	Board Manual

RIOT static pin mapping

please refer to this

document for the pin mapping as implemenented in boards/stm32f3discovery/include/periph_conf.h

User Interface

2 Buttons:

NAME	USER	RESET
Pin	PA0 (IN)	NRST

8 LEDs:

NAME	LD3	LD4	LD5	LD6	LD7	LD8	LD9	LD10
Color	red	blue	orange	green	green	orange	blue	red
Pin	PE9	PE8	PE10	PE15	PE11	PE14	PE12	PE13

E-Compass / Accelerometer

The board has an on-board MEMS-chip that is an integrated accelerometer and e-compass.

Sensor	LSM303DLHC
Type	Accelerometer and magnetometer
Vendor	ST Microelectronics
Datasheet	Datasheet
Connected to	I2C_0
Pin Config:
Device	I2C1
SCL	PB6 (OUT, I2C1_SCL)
SDA	PB7 (OUT, I2C1_SDA)
DRDY	PE2 (IN)
INT1	PE4 (IN)
INT2	PE5 (IN)

Gyroscope

An 3-axis gyroscope is soldered on the board.

Sensor	L3GD20/I3G4250D [1]
Type	Gyroscope
Vendor	ST Microelectronics
Datasheet L3GD20	Datasheet
Datasheet I3G4250D	Datasheet
Connected to	SPI_0
Pin Config:
Device	SPI1
SCK	PA5 (OUT, SPI1_SCK)
MISO	PA6 (IN, SPI1_MISO)
MOSI	PA7 (OUT, SPI1_MOSI)
CS	PE3 (OUT)
INT1	PE0 (IN)
INT2/DRDY	PE1 (IN)

[1] L3GD20 (up to rev. D01), IG34250D (from rev. E02) The driver detects automatically which sensor variant is on the board.

Implementation Status

Device	ID	Supported	Comments
MCU	STM23F303VC	partly	Energy saving modes not fully utilized
Low-level driver	GPIO	yes
	PWM	yes
	UART	full
	I2C	no	in progress
	SPI	no	in progress
	USB	no
	Timer	full
	Inpute Capture	no
Accelerometer	LSM303DLHC	no	planned
Magnetometer	LSM303DLHC	no	planned
Gyroscope	L3GD20/I3G4250D	yes

Flashing the Board

A detailed description about the flashing process can be found on the guides page. The board name for the STM32F3discovery is stm32f3discovery.

Using UART

connect your usb tty to: RX=PA10 TX=PA9 and GND=GND
- PA10 is connected with TX on the UART converter
- PA9 is connected with RX on the UART converter
done