Crate ddc

Control displays using the DDC/CI protocol.

Provides generic traits and utilities for working with DDC. See downstream crates for usable concrete implementations.

Re-exports

• pub use self::commands::Command;
• pub use self::commands::CommandResult;
• pub use self::commands::TimingMessage;

Modules

• commands
  DDC/CI command request and response types.

Structs

• Delay
  A type that can help with implementing the DDC specification delays.
• VcpValue
  VCP Value

Enums

• ErrorCode
  DDC/CI protocol errors
• VcpValueType
  VCP feature type.

Constants

• DELAY_COMMAND_FAILED_MS
  DDC delay required before retrying a request
• I2C_ADDRESS_DDC_CI
  DDC/CI command and control I2C address
• I2C_ADDRESS_EDID
  EDID EEPROM I2C address
• I2C_ADDRESS_EDID_SEGMENT
  E-DDC EDID segment register I2C address
• SUB_ADDRESS_DDC_CI
  DDC sub-address command prefix

Traits

• Ddc
  A high level interface to DDC commands.
• DdcCommand
  A (slightly) higher level interface to DdcCommandRaw.
• DdcCommandMarker
  Using this marker trait will automatically implement the Ddc and DdcTable traits.
• DdcCommandRaw
  Allows the execution of arbitrary low level DDC commands.
• DdcCommandRawMarker
  Using this marker trait will automatically implement the DdcCommand trait.
• DdcHost
  A DDC host is able to communicate with a DDC device such as a display.
• DdcTable
  Table commands can read and write arbitrary binary data to a VCP feature.
• Eddc
  E-DDC allows reading extensions of Enhanced EDID.
• Edid
  A trait that allows retrieving Extended Display Identification Data (EDID) from a device.

Type Aliases

• FeatureCode
  VCP feature code