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45 lines
1.3 KiB
Plaintext
45 lines
1.3 KiB
Plaintext
/**
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@defgroup boards_adafruit-grand-central-m4-express Adafruit Grand Central M4 Express
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@ingroup boards
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@brief Support for the Adafruit Grand Central M4 Express
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### General information
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The main features of the board are:
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- ATSAMD51 Cortex M4 running at 120 MHz
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- Hardware DSP and floating point support
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- 1MB Flash
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- 256 KB RAM
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- external 8 MB QSPI Flash storage
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- 32-bit, 3.3V logic and power
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- Micro SD Card slot connected to SPI
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- native USB
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### Links
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- [Overview](https://learn.adafruit.com/adafruit-grand-central)
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- [Schematics](https://learn.adafruit.com/assets/69175)
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### Flash the board
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The board is flashed using its on-board
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[boot loader](https://github.com/adafruit/uf2-samdx1).
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The process is automated in the usual `make flash` target.
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If RIOT is already running on the board, it will automatically reset the CPU
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and enter the bootloader. If some other firmware is running or RIOT crashed,
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you need to enter the bootloader manually by double tapping the board's reset
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button.
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Readiness of the bootloader is indicated by LED pulsing in red.
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### Accessing STDIO
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The usual way to obtain a console on this board is using an emulated USB serial
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port.
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*/
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