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92 lines
3.3 KiB
Plaintext
92 lines
3.3 KiB
Plaintext
/**
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@defgroup boards_arduino-zero Arduino Zero
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@ingroup boards
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@brief Support for the Arduino Zero board.
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## Overview
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The `Arduino Zero` is a board by Arduino/Genuino featuring a ATSAMD21G18A.
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The SAMD21 is a ARM Cortex-M0+ micro-controller. It has 256KiB of flash memory
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and 32KiB of RAM.
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This board is available [here](https://store.arduino.cc/product/GBX00003).
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## Hardware
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### MCU
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| MCU | ATSAMD21G18A |
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|:------------- |:------------------------------------- |
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| Family | ARM Cortex-M0+ |
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| Vendor | Atmel |
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| RAM | 32KiB |
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| Flash | 256KiB |
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| Frequency | up to 48MHz |
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| FPU | no |
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| Timers | 6 (1x 16-bit, 2x 24-bit, 3x 32-bit) |
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| ADCs | 6x 12-bit channels) |
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| UARTs | 2 |
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| SPIs | max 6 (see UART) |
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| I2Cs | max 6 (see UART) |
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| Vcc | 1.8V - 3.6V |
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| Datasheet | [Datasheet](http://ww1.microchip.com/downloads/en/DeviceDoc/SAM_D21_DA1_Family_Data%20Sheet_DS40001882E.pdf) |
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### User Interface
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1 LED:
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| Device | PIN |
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|:------ |:---- |
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| LED0 | PA17 |
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## Implementation Status
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Notice that the initial support for the Arduino Zero was based on samr21-xpro
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and Sodaq Autonomo.
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| Device | ID | Supported | Comments |
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|:------------- |:------------- |:------------- |:------------- |
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| MCU | samd21 | partly | Energy saving modes not fully utilized |
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| Low-level driver | GPIO | yes | |
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| | PWM | to be tested | |
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| | UART | yes | two UARTs|
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| | I2C | yes | |
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| | SPI | yes | |
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| | ADC | not implemented | |
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| | USB | no | |
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| | RTT | yes | |
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| | RTC | yes | |
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| | RNG | no | no HW module |
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| | Timer | yes | |
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Detailed information on the board can be found on [the official web page](https://www.arduino.cc/en/Main/ArduinoBoardZero).
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## Flashing the device
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The standard method for flashing RIOT to the Arduino Zero is using OpenOCD.
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For this to work properly, **you have to make sure to use a very recent version
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of OpenOCD**. Arduino-IDE comes with openocd v0.9.0 which is known to work.
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Also Ubuntu 16.04 has openocd v0.9.0.
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Refer to https://github.com/RIOT-OS/RIOT/wiki/OpenOCD for building OpenOCD
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and make sure "cmsis-dap" and "hidapi-libusb" are enabled.
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## Supported Toolchains
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To build software for the Arduino Zero board we strongly recommend the usage
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of the [GNU Tools for ARM Embedded Processors](https://launchpad.net/gcc-arm-embedded) toolchain.
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## Known Issues / Problems
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### Stack sizes
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The default stack sizes have not been tuned properly yet. If in doubt why
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your application crashes try increasing the default stack sizes and use `ps` to
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find out how much stack is being used.
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Tracked in https://github.com/RIOT-OS/RIOT/issues/2228
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*/
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