STM32 Nucleo-F401RE

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When using this board with RIOT, set the BOARD variable to nucleo-f401re 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 ?= nucleo-f401re

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

include $(RIOTBASE)/Makefile.include

Support for the STM32 Nucleo-F401RE

Overview

The Nucleo-F401RE is a board from ST’s Nucleo family supporting a ARM Cortex-M4 STM32F401RE microcontroller with 96KiB of RAM and 512KiB of Flash.

You can find general information about the Nucleo64 boards on the boards_common_nucleo64 page.

Hardware

Nucleo64 F401RE

Pinout

Pinout for the Nucleo-F401RE (from STM user manual UM1724, http://www.st.com/resource/en/user_manual/dm00105823.pdf, page 32)

MCU

MCU	STM32F401RE
Family	ARM Cortex-M4F
Vendor	ST Microelectronics
RAM	96KiB
Flash	512KiB
Frequency	up to 84MHz
FPU	yes
Timers	11 (2x watchdog, 1 SysTick, 6x 16-bit, 2x 32-bit [TIM2])
ADCs	1x 12-bit (16 channels)
UARTs	3
SPIs	3
I2Cs	3
RTC	1
USB	1
Vcc	1.7V - 3.6V
Datasheet	Datasheet
Reference Manual	Reference Manual
Programming Manual	Programming Manual
Board Manual	Board Manual

Implementation Status

Device	ID	Supported	Comments
MCU	STM32F401RE	partly	Energy saving modes not fully utilized
Low-level driver	GPIO	yes
	PWM	yes (7 pins available))
	UART	2 UARTs	USART2 via STLink/USB or D0(RX)/D1(TX) and USART6 on PA12(RX)/PA11(TX)
	I2C	1 I2C
	SPI	1 SPI
	USB	no
	Timer	2 32 bit timers

Flashing the Board

A detailed description about the flashing process can be found on the guides page. The board name for the Nucleo-F401RE is nucleo-f401re.

Issues with old Hardware Revisions

Some Nucleo 64 Boards come in different hardware revisions, which is located on a sticker at the backside of the board. As discussed in issue #6721, there are some issues with the external clock sources in revisions smaller than C-03. (This would also be true for all boards with board ID MB1136). The revision C-01 has a different configuration for the high speed external clock (HSE), which is used in RIOT. This could be fixed by reconfiguring some solder bridges as mentioned in the user manual, section 6.7.1. The other issue is, that revision C-01 also has no 32kHz oscillator, so the RTC module of RIOT cannot be used.