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Add documentation for the RGB LED

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Signed-off-by: Joachim Strömbergson <joachim@assured.se>
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Joachim Strömbergson 2022-12-19 13:22:22 +01:00
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doc/system_description/fpga.md
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@ -150,6 +150,9 @@ includes:
- Read access to the 32 bit FPGA design version, expressed as an integer
- Control and status access for the RGB LED on TKey board
- Setting bit 0 high turns on the Blue LED.
- Setting bit 1 high turns on the Green LED.
- Setting bit 2 high turns on the Red LED.
- Control and status access for the 4 GPIOs on the TKey board
- GPIO 1 and 2 are inputs and provide read access to the