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- Endpoint configuration
- ----------------------
- 0 Control endpoint
- 1 keyboard
- 2 mouse
- 3 debug
- 4 extra key(consumer/system)
- 5 nkro keyboard(supported only on ATmega32U4/16U4 and AT90USB64/128)
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- ATmega32U4/16U4, AT90USB64/128
- • Endpoint 0:programmable size FIFO up to 64 bytes, default control endpoint
- • Endpoints 1 programmable size FIFO up to 256 bytes in ping-pong mode.
- • Endpoints 2 to 6: programmable size FIFO up to 64 bytes in ping-pong mode.
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- AT90USB82/162, ATmega8U2/16U2/32U2
- • Endpoint 0:programmable size FIFO up to 64 bytes, default control endpoint
- • Endpoints 1 and 2: programmable size FIFO up to 64 bytes.
- • Endpoints 3 and 4: programmable size FIFO up to 64 bytes with ping-pong mode.
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- ping-pong mode means double buffer feature.
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- NOTE: ATmega8U2/16U2/32U2 is not supported with PJRC stack at this time.
- TODO: Macro definition for ATmega8U2/16U2/32U2 in usb.h
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