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USB HID protocol
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Host side of USB HID keyboard protocol implementation.
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Only standard HID Boot mode is supported at this time. This means most of normal keyboards are supported while proprietary >6KRO and NKRO is not.
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Third party Libraries
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---------------------
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USB_Host_Shield_2.0
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Circuits@Home repository is git-submoduled. Do git submodule init & update to get the content.
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https://github.com/felis/USB_Host_Shield_2.0
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arduino-1.0.1
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Arduino files copied from:
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https://github.com/arduino/Arduino/hardware/arduino/{cores,variants}
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Test build
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In test directory;
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$ make
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$ DEV=/dev/ttyACM0 make program
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You can see HID keyboard reports on debug output.
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Restriction and Bug
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-------------------
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Not statble yet.
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Can't bus-reset a keyboard which already attached on bus properly.
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Slow start up of Leonardo's bootloader causes this?
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Need to unplug/plug a keyboard after firmware starts up.
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MAX3421E doesn't work SAMPLEBUS well to know whether device connected or not.
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Keyboard with other endpoints than boot keyboard may go wrong.
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On my keyboard with mouse key the converter locks up when using mouse key function.
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