/**
@defgroup    boards_nucleo-f302r8 STM32 Nucleo-F302R8
@ingroup     boards_common_nucleo64
@brief       Support for the STM32 Nucleo-F302R8

## Overview

The [Nucleo-F302R8](http://www.st.com/en/evaluation-tools/nucleo-f302r8.html)
is a board from ST's Nucleo family supporting a ARM Cortex-M4
[STM32F302R8](http://www.st.com/en/microcontrollers/stm32f302r8.html)
microcontroller with 16KiB of RAM and 64KiB of Flash.

## Hardware

![nucleo image](http://www.open-electronics.org/wp-content/uploads/2015/08/Figura2-500x467.png)

## Pinout

@image html pinouts/nucleo-f302r8.svg "Pinout for the Nucleo-F302R8 (from user manual UM1724, http://www.st.com/resource/en/user_manual/dm00105823.pdf, page 30)" width=50%

### MCU
| MCU        | STM32F302R8           |
|:---------- |:--------------------- |
| Family     | ARM Cortex-M4         |
| Vendor     | ST Microelectronics   |
| RAM        | 16KiB                 |
| Flash      | 64KiB                 |
| Frequency  | up to 72MHz           |
| FPU        | yes                   |
| Timers     | 9 (5x 16-bit, 1x 32-bit [TIM2], 2x watchdog, 1x systick) |
| ADCs       | 1 with selectable resolution (6,8,10,12-bit) |
| UARTs      | 3                     |
| SPIs       | 2                     |
| I2Cs       | 3                     |
| RTC        | 1                     |
| CAN        | 1                     |
| USB        | 1                     |
| Vcc        | 2.0V - 3.6V           |
| Datasheet  | [Datasheet](http://www.st.com/resource/en/datasheet/stm32f302r8.pdf) |
| Reference Manual | [Reference Manual](http://www.st.com/resource/en/reference_manual/dm00094349.pdf) |
| Programming Manual | [Programming Manual](http://www.st.com/resource/en/programming_manual/dm00046982.pdf) |
| Board Manual | [Board Manual](http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00105823.pdf) |


## Implementation Status

| Device | ID        | Supported | Comments  |
|:------------- |:------------- |:------------- |:------------- |
| MCU        | STM32F302R8   | partly    | Energy saving modes not fully utilized |
| Low-level driver | GPIO    | yes       | |
|        | PWM       | one PWM (D5)  | |
|        | UART      | three UART    | |
|        | I2C       | no | |
|        | SPI       | one SPI (SPI2)    | |
|        | USB       | no        | |
|        | Timer     | one 32 timer (TIM2)   | |


## Flashing the device

### Flashing the Board Using OpenOCD

The ST Nucleo-F302R8 board includes an on-board ST-LINK V2-1 programmer.
The easiest way to program the board is to use OpenOCD. Once you have
installed OpenOCD (look [here](https://github.com/RIOT-OS/RIOT/wiki/OpenOCD)
for installation instructions), you can flash the board simply by typing

```
make BOARD=nucleo-f302r8 flash
```
and debug via GDB by simply typing
```
make BOARD=nucleo-f302r8 debug
```
### Flashing the Board Using ST-LINK Removable Media

On-board ST-LINK programmer provides via composite USB device removable media.
Copying the HEX file causes reprogramming of the board. This task
could be performed manually; however, the cpy2remed (copy to removable
media) PROGRAMMER script does this automatically. To program board in
this manner, use the command:
```
make BOARD=nucleo-f302r8 PROGRAMMER=cpy2remed flash
```
@note This PROGRAMMER was tested using ST-LINK firmware 2.37.26. Firmware updates
could be found on [this STM webpage](https://www.st.com/en/development-tools/stsw-link007.html).

## Supported Toolchains
For using the ST Nucleo-F302R8 board we strongly recommend the usage of
the [GNU Tools for ARM Embedded Processors](https://launchpad.net/gcc-arm-embedded) toolchain.
 */