35 lines
1.1 KiB
Markdown
35 lines
1.1 KiB
Markdown
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stm32f4disc-demo
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================
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This is some STM32F4DISCOVERY demo application.
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It a serial command-interface for controlling (via GPIO) what the LED
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ring does: cycle clock-wise, counter clock-wise, or follow the accelerometer.
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The accelerometer is accessed via SPI.
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Serial interface
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The serial interface configured on USART 2 can be accessed using, for example,
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an USB-to-serial cable connected to a ground pin, and RX to PA2 and TX to
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PA3.
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The interface will output the following lines:
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* `init` after initialization has finished
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* `button` when the user button has been pressed
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* `level` when the board is being held in a perfect level position (when in
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acceleration mode)
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The following lines can be given as commands:
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* `on` to turn all the leds on (and disable accelerometer/cycle mode)
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* `off` to turn all the leds off (and disable accelerometer/cycle mode)
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* `accel` to switch to accelerometer mode
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* `cycle` to switch to cycle mode
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* `stop` to freeze the LEDs in the current position
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License
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-------
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[0-clause BSD license](LICENSE.md).
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