PI2C_READ callback function (video.h)
The I2CRead function reads data over the I2C channel.
Syntax
PI2C_READ Pi2cRead;
BOOLEAN Pi2cRead(
[in] IN PVOID HwDeviceExtension,
[in] IN PI2C_CALLBACKS I2CCallbacks,
[out] OUT PUCHAR Buffer,
[in] IN ULONG Length
)
{...}
Parameters
[in] HwDeviceExtension
Pointer to the miniport driver's per-adapter device extension.
[in] I2CCallbacks
Pointer to an I2C_CALLBACKS structure, containing pointers to miniport driver-defined functions that read and write data and clock lines.
[out] Buffer
Pointer to the data to be read.
[in] Length
Specifies the number of bytes to be read.
Return value
I2CRead returns TRUE if the data was successfully read, and FALSE otherwise.
Remarks
The video port implements this function, which can be accessed through a pointer in the VIDEO_PORT_I2C_INTERFACE structure.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 2000 and later versions of the Windows operating systems. |
| Target Platform | Desktop |
| Header | video.h (include Video.h) |
| IRQL | PASSIVE_LEVEL |