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107 lines
4.2 KiB
Plaintext
107 lines
4.2 KiB
Plaintext
/**
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@defgroup boards_nucleo-f401re STM32 Nucleo-F401RE
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@ingroup boards_common_nucleo64
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@brief Support for the STM32 Nucleo-F401RE
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## Overview
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The Nucleo-F401RE is a board from ST's Nucleo family supporting a ARM Cortex-M4
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STM32F401RE microcontroller with 96KiB of RAM and 512KiB of Flash.
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## Hardware
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## Pinout
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@image html pinouts/nucleo-f401re.svg "Pinout for the Nucleo-F401RE (from STM user manual UM1724, http://www.st.com/resource/en/user_manual/dm00105823.pdf, page 32)" width=50%
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### MCU
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| MCU | STM32F401RE |
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|:---------- |:----------------- |
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| Family | ARM Cortex-M4 |
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| Vendor | ST Microelectronics |
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| RAM | 96KiB |
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| Flash | 512KiB |
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| Frequency | up to 84MHz |
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| FPU | yes |
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| Timers | 11 (2x watchdog, 1 SysTick, 6x 16-bit, 2x 32-bit [TIM2]) |
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| ADCs | 1x 12-bit (16 channels) |
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| UARTs | 3 |
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| SPIs | 3 |
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| I2Cs | 3 |
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| RTC | 1 |
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| USB | 1 |
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| Vcc | 1.7V - 3.6V |
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| Datasheet | [Datasheet](http://www.st.com/resource/en/datasheet/stm32f401re.pdf) |
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| Reference Manual | [Reference Manual](https://www.st.com/resource/en/reference_manual/dm00096844.pdf) |
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| Programming Manual | [Programming Manual](http://www.st.com/resource/en/programming_manual/dm00046982.pdf) |
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| Board Manual | [Board Manual](http://www.st.com/resource/en/user_manual/dm00105823.pdf) |
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## Implementation Status
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| Device | ID | Supported | Comments |
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|:------------- |:------------- |:------------- |:------------- |
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| MCU | STM32F401RE | partly | Energy saving modes not fully utilized |
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| Low-level driver | GPIO | yes | |
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| | PWM | yes (7 pins available)) | |
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| | UART | 2 UARTs | USART2 via STLink/USB or D0(RX)/D1(TX) and USART6 on PA12(RX)/PA11(TX) |
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| | I2C | 1 I2C | |
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| | SPI | 1 SPI | |
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| | USB | no | |
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| | Timer | 2 32 bit timers | |
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## Flashing the device
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### Flashing the Board Using OpenOCD
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The ST Nucleo-F401RE board includes an on-board ST-LINK V2 programmer. The
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easiest way to program the board is to use OpenOCD. Once you have installed
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OpenOCD (look [here](https://github.com/RIOT-OS/RIOT/wiki/OpenOCD) for
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installation instructions), you can flash the board simply by typing
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```
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make BOARD=nucleo-f401re flash
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```
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and debug via GDB by simply typing
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```
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make BOARD=nucleo-f401re debug
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```
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### Flashing the Board Using ST-LINK Removable Media
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On-board ST-LINK programmer provides via composite USB device removable media.
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Copying the HEX file causes reprogramming of the board. This task
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could be performed manually; however, the cpy2remed (copy to removable
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media) PROGRAMMER script does this automatically. To program board in
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this manner, use the command:
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```
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make BOARD=nucleo-f401re PROGRAMMER=cpy2remed flash
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```
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@note This PROGRAMMER was tested using ST-LINK firmware 2.37.26. Firmware updates
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could be found on [this STM webpage](https://www.st.com/en/development-tools/stsw-link007.html).
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## Supported Toolchains
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For using the ST Nucleo-F401RE board we strongly recommend the usage of the
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[GNU Tools for ARM Embedded Processors](https://launchpad.net/gcc-arm-embedded)
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toolchain.
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## Issues with old Hardware Revisions
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Some Nucleo 64 Boards come in different hardware revisions, which is located
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on a sticker at the backside of the board. As discussed in issue
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[#6721](https://github.com/RIOT-OS/RIOT/issues/6721), there are some issues with
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the external clock sources in revisions smaller than `C-03`. (This would also be
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true for all boards with board ID `MB1136`).
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The revision `C-01` has a different configuration for the high speed external
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clock (HSE), which is used in RIOT. This could be fixed by reconfiguring some
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solder bridges as mentioned in the [user
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manual](http://www.st.com/resource/en/user_manual/dm00105823.pdf), section
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6.7.1.
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The other issue is, that revision `C-01` also has no 32kHz oscillator, so the
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RTC module of RIOT cannot be used.
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*/
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