Skip to content
Snippets Groups Projects

Changes

Page history
  • New page
  • Templates
    • [style] minor style fixes authored by Luca Conterio's avatar Luca Conterio
    Hide whitespace changes
    Inline Side-by-side
    GPIO-Usage-&-Used-Pins.md
    View page @ ad6bddc5
    A GPIO is a software-controllable peripheral used to configure the device IO ports, also called pins.
    A **GPIO** is a software-controllable peripheral used to configure the device IO ports, also called pins.
    GPIOs are grouped in ports and so each GPIO has an identifier.
    The identifiers have the following format: PXY, where X is the port name and Y is the pin number.
    The identifiers have the following format: `PXY`, where `X` is the GPIO port name and `Y` is the pin number.
    ## Configuration
    > :warning: **WARNING: Before using a GPIO it has to be correctly configured. A lot of times you can experience non-working code or drivers due to not initialized or configured GPIOs.**
    ......@@ -75,28 +75,27 @@ somePin.alternateFunction(5);
    ## Discovery Board Pins
    These are some commonly used pins that you'll need when writing software for **Discovery boards**.
    - STM32F429ZI_DISCO
    #### STM32F429ZI Discovery
    | stm32f429zi | |
    |--------------|---|
    | Red Led | PG13 |
    | Green Led | PG14 |
    | STM32F429ZI | Pin |
    |--------------|------|
    | Red Led | PG13 |
    | Green Led | PG14 |
    | User Button | PA0 |
    You can find a complete pin usage description
    [here](https://os.mbed.com/platforms/ST-Discovery-F429ZI/).
    You can find a complete pin usage description [here](https://os.mbed.com/platforms/ST-Discovery-F429ZI/).
    - STM32F407VG_DISCO
    #### STM32F407VG Discovery
    | stm32f407vg | |
    |--------------|---|
    | Blue Led | PD15 |
    | Red Led | PD14 |
    | Orange Led | PD13 |
    | Green Led | PD12 |
    | User Button | PA0 |
    | STM32F407VG | Pin |
    |-------------|------|
    | Blue Led | PD15 |
    | Red Led | PD14 |
    | Orange Led | PD13 |
    | Green Led | PD12 |
    | User Button | PA0 |
    You can find more in the [datasheet](http://www.st.com/content/ccc/resource/technical/document/user_manual/70/fe/4a/3f/e7/e1/4f/7d/DM00039084.pdf/files/DM00039084.pdf/jcr:content/translations/en.DM00039084.pdf) for more.
    You can find more in the [user manual](http://www.st.com/content/ccc/resource/technical/document/user_manual/70/fe/4a/3f/e7/e1/4f/7d/DM00039084.pdf/files/DM00039084.pdf/jcr:content/translations/en.DM00039084.pdf) for more.
    ## Miosix Used Pins
    These are some pins that are used by default from the kernel when running on **STM32 micros** (all paths are referred to `/libs/miosix-kernel/miosix`):
    ......