I use atipdl(atipdlxx.dll) for i2c communication , But always failed !!!
//=======================================================
ATIDL_WriteAndReadI2C(ULONG, stATI_I2C *);
typedef struct tagATI_I2C
{
ULONG ulSize; // size of stATI_I2C
ULONG ulLine; // Numerical value representing hardware I2C
ULONG ulAddress; // The 7-bit I2C slave device address
ULONG ulOffset; // The offset of the data from the address
ULONG ulAction; // Read from or write to slave device
ULONG ulSpeed; // I2C clock speed in kHz
ULONG ulDataSize; // A numerical value representing the number of bytes to be sent or receive on the I2C bus
PUCHAR pucData; // Address of the unsigned characters which are to be sent or receive on the I2C bus
} stATI_I2C;
Can you provide one sample?
//=======================================================
graphics card :HD7750
system: xp 32
programming language :VS2010(C++)
//=======================================================
TKS!!!