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Description
Ultibo USB CDC Interface unit
The USB Communications Device Class (CDC) standard defines the protocol for communicating with a range of network adapters, modems and ISDN devices. This unit provides common definitions and structures used in conjunction with CDC devices.
Constants
[Expand]
CDC specific constants USB_CDC_*_TYPE
| Class specific descriptor types (See: USB Class Definitions for Communications Devices 1.2)
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USB_CDC_HEADER_TYPE = $00;
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Header Functional Descriptor
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USB_CDC_CALL_MANAGEMENT_TYPE = $01;
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Call Management Functional Descriptor
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USB_CDC_ACM_TYPE = $02;
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Abstract Control Management Functional Descriptor
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USB_CDC_DLM_TYPE = $03;
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Direct Line Management Functional Descriptor
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USB_CDC_RINGER_TYPE = $04;
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Telephone Ringer Functional Descriptor
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USB_CDC_CALL_LINE_TYPE = $05;
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Telephone Call and Line State Reporting Capabilities Functional Descriptor
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USB_CDC_UNION_TYPE = $06;
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Union Functional Descriptor
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USB_CDC_COUNTRY_TYPE = $07;
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Country Selection Functional Descriptor
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USB_CDC_TOM_TYPE = $08;
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Telephone Operational Modes Functional Descriptor
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USB_CDC_USB_TERMINAL_TYPE = $09;
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USB Terminal Functional Descriptor
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USB_CDC_NETWORK_TERMINAL_TYPE = $0a;
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Network Channel Terminal Descriptor
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USB_CDC_PROTOCOL_TYPE = $0b;
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Protocol Unit Functional Descriptor
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USB_CDC_EXTENSION_TYPE = $0c;
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Extension Unit Functional Descriptor
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USB_CDC_MCCM_TYPE = $0d;
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Multi-Channel Management Functional Descriptor
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USB_CDC_CCM_TYPE = $0e;
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CAPI Control Management Functional Descriptor
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USB_CDC_ETHERNET_TYPE = $0f;
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Ethernet Networking Functional Descriptor
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USB_CDC_ATM_TYPE = $10;
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ATM Networking Functional Descriptor
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USB_CDC_WHCM_TYPE = $11;
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Wireless Handset Control Model Functional Descriptor
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USB_CDC_MDLM_TYPE = $12;
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Mobile Direct Line Model Functional Descriptor
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USB_CDC_MDLM_DETAIL_TYPE = $13;
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MDLM Detail Functional Descriptor
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USB_CDC_DMM_TYPE = $14;
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Device Management Model Functional Descriptor
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USB_CDC_OBEX_TYPE = $15;
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OBEX Functional Descriptor
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USB_CDC_TCM_TYPE = $18;
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Telephone Control Model Functional Descriptor
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USB_CDC_NCM_TYPE = $1a;
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NCM Functional Descriptor
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USB_CDC_MBIM_TYPE = $1b;
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USB_CDC_MBIM_EXTENDED_TYPE = $1c;
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[Expand]
CDC call management capabilities USB_CDC_CALL_MGMT_CAP_*
| Call Management Capabilities (See: Section 5.2.3.2 of USB Class Definitions for Communications Devices 1.2)
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USB_CDC_CALL_MGMT_CAP_CALL_MGMT = $01;
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USB_CDC_CALL_MGMT_CAP_DATA_INTF = $02;
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[Expand]
CDC abstract control model capabilities USB_CDC_ACM_*
| Abstract Control Model Capabilities (See: Section 5.2.3.3 of USB Class Definitions for Communications Devices 1.2)
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USB_CDC_ACM_COMM_FEATURE = $01;
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USB_CDC_ACM_CAP_LINE = $02;
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USB_CDC_ACM_CAP_BRK = $04;
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USB_CDC_ACM_CAP_NOTIFY = $08;
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[Expand]
CDC class specific control requests USB_CDC_*
| Class specific Control Requests (See: Section 6.2 of USB Class Definitions for Communications Devices 1.2)
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USB_CDC_SEND_ENCAPSULATED_COMMAND = $00;
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USB_CDC_GET_ENCAPSULATED_RESPONSE = $01;
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USB_CDC_REQ_SET_LINE_CODING = $20;
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USB_CDC_REQ_GET_LINE_CODING = $21;
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USB_CDC_REQ_SET_CONTROL_LINE_STATE = $22;
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USB_CDC_REQ_SEND_BREAK = $23;
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USB_CDC_SET_ETHERNET_MULTICAST_FILTERS = $40;
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USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER = $41;
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USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER = $42;
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USB_CDC_SET_ETHERNET_PACKET_FILTER = $43;
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USB_CDC_GET_ETHERNET_STATISTIC = $44;
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USB_CDC_GET_NTB_PARAMETERS = $80;
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USB_CDC_GET_NET_ADDRESS = $81;
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USB_CDC_SET_NET_ADDRESS = $82;
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USB_CDC_GET_NTB_FORMAT = $83;
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USB_CDC_SET_NTB_FORMAT = $84;
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USB_CDC_GET_NTB_INPUT_SIZE = $85;
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USB_CDC_SET_NTB_INPUT_SIZE = $86;
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USB_CDC_GET_MAX_DATAGRAM_SIZE = $87;
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USB_CDC_SET_MAX_DATAGRAM_SIZE = $88;
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USB_CDC_GET_CRC_MODE = $89;
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USB_CDC_SET_CRC_MODE = $8a;
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[Expand]
CDC get/set line coding bCharFormat USB_CDC_*_STOP_BITS
| Get/Set Line Coding bCharFormat (See: Section 6.3.11 of USB Communications Class Subclass Specification for PSTN Devices 1.2)
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USB_CDC_1_STOP_BITS = 0;
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USB_CDC_1_5_STOP_BITS = 1;
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USB_CDC_2_STOP_BITS = 2;
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[Expand]
CDC get/set line coding bParityType USB_CDC_*_PARITY
| Get/Set Line Coding bParityType (See: Section 6.3.11 of USB Communications Class Subclass Specification for PSTN Devices 1.2)
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USB_CDC_NO_PARITY = 0;
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USB_CDC_ODD_PARITY = 1;
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USB_CDC_EVEN_PARITY = 2;
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USB_CDC_MARK_PARITY = 3;
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USB_CDC_SPACE_PARITY = 4;
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[Expand]
CDC set control line state wValue USB_CDC_ACM_CTRL_*
| Set Control Line State wValue (See: Section 6.3.12 of USB Communications Class Subclass Specification for PSTN Devices 1.2)
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USB_CDC_ACM_CTRL_DTR = $01;
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Indicates to DCE if DTE is present or not. This signal corresponds to V.24 signal 108/2 and RS-232 signal DTR.
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USB_CDC_ACM_CTRL_RTS = $02;
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Carrier control for half duplex modems. This signal corresponds to V.24 signal 105 and RS-232 signal RTS.
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[Expand]
CDC set ethernet packet filter wValue USB_CDC_PACKET_TYPE_*
| Set Ethernet Packet Filter wValue (See: Section 6.2.4 of USB Communications Class Subclass Specification for Ethernet Control Model Devices 1.2)
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USB_CDC_PACKET_TYPE_PROMISCUOUS = (1 shl 0);
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USB_CDC_PACKET_TYPE_ALL_MULTICAST = (1 shl 1);
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No filter
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USB_CDC_PACKET_TYPE_DIRECTED = (1 shl 2);
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USB_CDC_PACKET_TYPE_BROADCAST = (1 shl 3);
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USB_CDC_PACKET_TYPE_MULTICAST = (1 shl 4);
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Filtered
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[Expand]
CDC class specific notifications USB_CDC_NOTIFY_*
| Class Specific Notifications (See: Section 6.3 of USB Class Definitions for Communications Devices 1.2)
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USB_CDC_NOTIFY_NETWORK_CONNECTION = $00;
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USB_CDC_NOTIFY_RESPONSE_AVAILABLE = $01;
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USB_CDC_NOTIFY_SERIAL_STATE = $20;
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USB_CDC_NOTIFY_SPEED_CHANGE = $2a;
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[Expand]
CDC serial state notification data USB_CDC_ACM_CTRL_*
| Serial State Notification Data (See: Section 6.5.4 of USB Communications Class Subclass Specification for PSTN Devices 1.2)
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USB_CDC_ACM_CTRL_DCD = $01;
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State of receiver carrier detection mechanism of device. This signal corresponds to V.24 signal 109 and RS-232 signal DCD.
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USB_CDC_ACM_CTRL_DSR = $02;
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State of transmission carrier. This signal corresponds to V.24 signal 106 and RS-232 signal DSR.
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USB_CDC_ACM_CTRL_BRK = $04;
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State of break detection mechanism of the device
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USB_CDC_ACM_CTRL_RI = $08;
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State of ring signal detection of the device
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USB_CDC_ACM_CTRL_FRAMING = $10;
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A framing error has occurred
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USB_CDC_ACM_CTRL_PARITY = $20;
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A parity error has occurred
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USB_CDC_ACM_CTRL_OVERRUN = $40;
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Received data has been discarded due to overrun in the device
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USB_CDC_ACM_CTRL_CONTROL_MASK = USB_CDC_ACM_CTRL_DCD or USB_CDC_ACM_CTRL_DSR or USB_CDC_ACM_CTRL_RI;
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USB_CDC_ACM_CTRL_TRANSIENT_MASK = USB_CDC_ACM_CTRL_BRK or USB_CDC_ACM_CTRL_FRAMING or USB_CDC_ACM_CTRL_PARITY or USB_CDC_ACM_CTRL_OVERRUN;
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Type definitions
CDC descriptor
[Expand]
PUSBCDCDescriptor = ^TUSBCDCDescriptor;
TUSBCDCDescriptor = packed record
bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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CDC header descriptor
[Expand]
PUSBCDCHeaderDescriptor = ^TUSBCDCHeaderDescriptor;
TUSBCDCHeaderDescriptor = packed record
| See: Section 5.2.3.1 of USB Class Definitions for Communications Devices 1.2
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bcdCDC:Word;
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LE16
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CDC call management descriptor
[Expand]
PUSBCDCCallManagementDescriptor = ^TUSBCDCCallManagementDescriptor;
TUSBCDCCallManagementDescriptor = packed record
| See: Section 5.2.3.2 of USB Class Definitions for Communications Devices 1.2
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bmCapabilities:Byte;
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See USB_CDC_CALL_MGMT_CAP_*
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CDC abstract control management descriptor
[Expand]
PUSBCDCACMDescriptor = ^TUSBCDCACMDescriptor;
TUSBCDCACMDescriptor = packed record
| See: Section 5.2.3.3 of USB Class Definitions for Communications Devices 1.2
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bmCapabilities:Byte;
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See USB_CDC_ACM_*
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CDC union descriptor
[Expand]
PUSBCDCUnionDescriptor = ^TUSBCDCUnionDescriptor;
TUSBCDCUnionDescriptor = packed record
| See: Section 5.2.3.8 of USB Class Definitions for Communications Devices 1.2
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bMasterInterface0:Byte;
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bSlaveInterface0:Byte;
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| Additional Slave interfaces dependent on bFunctionLength
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CDC country descriptor
[Expand]
PUSBCDCCountryDescriptor = ^TUSBCDCCountryDescriptor;
TUSBCDCCountryDescriptor = packed record
| See: Section 5.2.3.9 of USB Class Definitions for Communications Devices 1.2
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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iCountryCodeRelDate:Byte;
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wCountyCode0:Word;
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LE16
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| Additional Country codes dependent on bFunctionLength
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CDC network terminal descriptor
[Expand]
PUSBCDCNetworkTerminalDescriptor = ^TUSBCDCNetworkTerminalDescriptor;
TUSBCDCNetworkTerminalDescriptor = packed record
| See: Section 5.2.3.11 of USB Class Definitions for Communications Devices 1.2
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bEntityId:Byte;
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iName:Byte;
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bChannelIndex:Byte;
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bPhysicalInterface:Byte;
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CDC ethernet descriptor
[Expand]
PUSBCDCEthernetDescriptor = ^TUSBCDCEthernetDescriptor;
TUSBCDCEthernetDescriptor = packed record
| See: Section 5.4 of USB Communications Class Subclass Specification for Ethernet Control Model Devices 1.2
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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iMACAddress:Byte;
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bmEthernetStatistics:LongWord;
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LE32
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wMaxSegmentSize:Word;
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LE16
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wNumberMCFilters:Word;
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LE16
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bNumberPowerFilters:Byte;
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CDC telephone control model descriptor
[Expand]
PUSBCDCTCMDescriptor = ^TUSBCDCTCMDescriptor;
TUSBCDCTCMDescriptor = packed record
| See: Section 6.3.2.3 of USB CDC Subclass Specification for Wireless Mobile Communications Devices 1.1
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bcdVersion:Word;
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wMaxCommand:Word;
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LE16
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CDC MDLM descriptor
[Expand]
PUSBCDCMDLMDescriptor = ^TUSBCDCMDLMDescriptor;
TUSBCDCMDLMDescriptor = packed record
| See: Section 6.7.2.3 of USB CDC Subclass Specification for Wireless Mobile Communications Devices 1.1
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bcdVersion:Word;
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LE16
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bGUID:array[0..15] of Byte;
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CDC MDLM detail descriptor
[Expand]
PUSBCDCMDLMDetailDescriptor = ^TUSBCDCMDLMDetailDescriptor;
TUSBCDCMDLMDetailDescriptor = packed record
| See: Section 6.7.2.4 of USB CDC Subclass Specification for Wireless Mobile Communications Devices 1.1
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bGuidDescriptorType:Byte;
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Associated with TUSBCDCMDLMDescriptor.bGUID
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bDetailData:array[0..0] of Byte;
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CDC OBEX descriptor
[Expand]
PUSBCDCOBEXDescriptor = ^TUSBCDCOBEXDescriptor;
TUSBCDCOBEXDescriptor = packed record
| See: Section 6.5.2.3 of USB CDC Subclass Specification for Wireless Mobile Communications Devices 1.1
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bcdVersion:Word;
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LE16
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CDC NCM descriptor
[Expand]
PUSBCDCNCMDescriptor = ^TUSBCDCNCMDescriptor;
TUSBCDCNCMDescriptor = packed record
bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bcdNcmVersion:Word;
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LE16
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bmNetworkCapabilities:Byte;
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CDC MBIM descriptor
[Expand]
PUSBCDCMBIMDescriptor = ^TUSBCDCMBIMDescriptor;
TUSBCDCMBIMDescriptor = packed record
bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bcdMBIMVersion:Word;
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LE16
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wMaxControlMessage:Word;
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LE16
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bNumberFilters:Byte;
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bMaxFilterSize:Byte;
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wMaxSegmentSize:Word;
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LE16
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bmNetworkCapabilities:Byte;
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CDC MBIM extended descriptor
[Expand]
PUSBCDCMBIMExtendedDescriptor = ^TUSBCDCMBIMExtendedDescriptor;
TUSBCDCMBIMExtendedDescriptor = packed record
| Device Properties
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bFunctionLength:Byte;
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bDescriptorType:Byte;
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bDescriptorSubType:Byte;
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bcdMBIMExtendedVersion:Word;
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LE16
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bMaxOutstandingCommandMessages:Byte;
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wMTU:Word;
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LE16
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CDC line coding
[Expand]
PUSBCDCLineCoding = ^TUSBCDCLineCoding;
TUSBCDCLineCoding = packed record
| See: Section 6.3.11 of USB Communications Class Subclass Specification for PSTN Devices 1.2
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dwDTERate:LongWord;
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LE32
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bCharFormat:Byte;
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See USB_CDC_1_STOP_BITS etc
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bParityType:Byte;
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See USB_CDC_NO_PARITY etc
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bDataBits:Byte;
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CDC notification
[Expand]
PUSBCDCNotification = ^TUSBCDCNotification;
TUSBCDCNotification = packed record
| See: Section 6.3 of USB Class Definitions for Communications Devices 1.2
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bmRequestType:Byte;
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bNotificationType:Byte;
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wValue:Word;
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LE16
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wIndex:Word;
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LE16
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wLength:Word;
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LE16
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CDC connection speed change
[Expand]
PUSBCDCSpeedChange = ^TUSBCDCSpeedChange;
TUSBCDCSpeedChange = packed record
| See: Section 6.3.3 of USB Class Definitions for Communications Devices 1.2
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DLBitRRate:LongWord;
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LE32 Contains the downlink bit rate, in bits per second, as sent on the IN pipe.
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ULBitRate:LongWord;
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LE32 Contains the uplink bit rate, in bits per second, as sent on the OUT pipe.
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CDC headers
[Expand]
PUSBCDCHeaders = ^TUSBCDCHeaders;
TUSBCDCHeaders = record
UnionDescriptor:PUSBCDCUnionDescriptor;
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Union Functional Descriptor
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HeaderDescriptor:PUSBCDCHeaderDescriptor;
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Header Functional Descriptor
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CallManagementDescriptor:PUSBCDCCallManagementDescriptor;
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Call Management Descriptor
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ACMDescriptor:PUSBCDCACMDescriptor;
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Abstract Control Management Descriptor
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CountryDescriptor:PUSBCDCCountryDescriptor;
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Country Selection Functional Descriptor
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NetworkTerminalDescriptor:PUSBCDCNetworkTerminalDescriptor;
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Network Channel Terminal Functional Descriptor
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EthernetDescriptor:PUSBCDCEthernetDescriptor;
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Ethernet Networking Functional Descriptor
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TCMDescriptor:PUSBCDCTCMDescriptor;
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Telephone Control Model Functional Descriptor
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MDLMDescriptor:PUSBCDCMDLMDescriptor;
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MDLM Functional Descriptor
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MDLMDetailDescriptor:PUSBCDCMDLMDetailDescriptor;
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MDLM Detail Functional Descriptor
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OBEXDescriptor:PUSBCDCOBEXDescriptor;
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OBEX Control Model Functional Descriptor
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NCMDescriptor:PUSBCDCNCMDescriptor;
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NCM Control Model Functional Descriptor
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MBIMDescriptor:PUSBCDCMBIMDescriptor;
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MBIM Control Model Functional Descriptor
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MBIMExtendedDescriptor:PUSBCDCMBIMExtendedDescriptor;
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MBIM Extended Functional Descriptor
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Public variables
None defined
Function declarations
CDC helper functions
[Expand]
function USBCDCParseHeaders(Device:PUSBDevice; Headers:PUSBCDCHeaders; Data:Pointer; Size:LongWord):LongWord;
Description: Parse the extra data contained in a CDC interface and return pointers to the available headers
| Device
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The USB device the headers belong to
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| Headers
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A pointer to the headers structure to be returned
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| Data
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A pointer to the extra data from a CDC interface
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| Size
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The size of the buffer pointed to by Data
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| Return
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USB_STATUS_SUCCESS if completed or another error code on failure
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