116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
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enum USB_PID {
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// Token Packets
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OUT_TOKEN = 0b0001,
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IN_TOKEN = 0b1001,
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SOF_TOKEN = 0b0101,
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SETUP_TOKEN = 0b1101,
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// Data Packets
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DATA0_DATA = 0b0011,
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DATA1_DATA = 0b1011,
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DATA2_DATA = 0b0111,
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MDATA_DATA = 0b1111,
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// Handshake Packets
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ACK_HANDSHAKE = 0b0010,
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NAK_HANDSHAKE = 0b1010,
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STALL_HANDSHAKE = 0b1110,
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NYET_HANDSHAKE = 0b0110,
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// Special & Other Packets
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PRE_SPECIAL = 0b1100, // PREamble shares value with ERR
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ERR_SPECIAL = 0b1100,
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SPLIT_SPECIAL = 0b1000,
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PING_SPECIAL = 0b0100
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};
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enum Configuration_bmAttributes{
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USB_BUS_POWERED = (1 << 7),
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SELF_POWERED = (1 << 6),
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REMOTE_WAKEUP = (1 << 5),
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};
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enum Endpoint_bmAttributes {
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// Bits 1..0: Transfer Type
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TRANSFER_TYPE_MASK = 0b00000011,
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TRANSFER_CONTROL = 0b00000000,
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TRANSFER_ISOCHRONOUS = 0b00000001,
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TRANSFER_BULK = 0b00000010,
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TRANSFER_INTERRUPT = 0b00000011,
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// Bits 3..2: Synchronization Type (Isochronous Mode only)
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SYNC_TYPE_MASK = 0b00001100,
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SYNC_NOSYNC = (0b00 << 2), // No Synchronization
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SYNC_ASYNC = (0b01 << 2), // Asynchronous
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SYNC_ADAPTIVE = (0b10 << 2), // Adaptive
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SYNC_SYNCHRONOUS = (0b11 << 2), // Synchronous
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// Bits 5..4: Usage Type (Isochronous Mode only)
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USAGE_TYPE_MASK = 0b00110000,
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USAGE_DATA = (0b00 << 4), // Data Endpoint
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USAGE_FEEDBACK = (0b01 << 4), // Feedback Endpoint
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USAGE_EXPLICIT_FEEDBACK = (0b10 << 4), // Explicit Feedback Data Endpoint
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USAGE_RESERVED = (0b11 << 4) // Reserved
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};
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enum Setup_bmRequestType {
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// Bit 7: Data Phase Transfer Direction
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DIR_MASK = (1 << 7),
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HOST_TO_DEVICE = (0 << 7),
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DEVICE_TO_HOST = (1 << 7),
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// Bits 6..5: Type
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TYPE_MASK = (0b11 << 5),
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TYPE_STANDARD = (0b00 << 5),
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TYPE_CLASS = (0b01 << 5),
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TYPE_VENDOR = (0b10 << 5),
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TYPE_RESERVED = (0b11 << 5),
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// Bits 4..0: Recipient
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RECIPIENT_MASK = 0b11111,
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RECIPIENT_DEVICE = 0,
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RECIPIENT_INTERFACE = 1,
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RECIPIENT_ENDPOINT = 2,
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RECIPIENT_OTHER = 3
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};
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enum Standard__Device_Requests {
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GET_STATUS = 0x00,
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/**
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* GET_STATUS will reuturn a 16bit word.
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* D0 is "Self Powered" bit, if D0 == 0, then the device is powered by the bus
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* D1 is the "Remote Wakeup" bit, if D1 == 1, then the host can wake up this device from suspend
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*/
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CLEAR_FEATURE = 0x01,
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SET_FEATURE = 0x03,
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SET_ADDRESS = 0x05,
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GET_DESCRIPTOR = 0x06,
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SET_DESCRIPTOR = 0x07,
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GET_CONFIGURATION = 0x08,
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SET_CONFIGURATION = 0x09
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};
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enum Standard_Interface_Requests {
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GET_STATUS = 0x00,
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CLEAR_FEATURE = 0x01,
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SET_FEATURE = 0x03,
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GET_INTERFACE = 0x0A,
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SET_INTERFACE = 0x11,
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};
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enum Standard_Endpoint_Requests {
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GET_STATUS = 0x00,
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CLEAR_FEATURE = 0x01,
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SET_FEATURE = 0x03,
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/**
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* Clear Feature and Set Feature are used to set Endpoint Features.
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* The standard currently defines one endpoint feature selector,
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* ENDPOINT_HALT (0x00) which allows the host to stall and clear an endpoint.
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*/
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SYNCH_FRAME = 0x12,
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}; |