private CP2112_DLL.HID_SMBUS_STATUS Read2(byte slaveAddress, ushort numBytesToRead,
byte OffsetAddr, ref byte[] readBytes)
{
CP2112_DLL.HID_SMBUS_STATUS ret = CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_ERROR;
byte[] BufTmp = new byte[64];
byte[] targetAddress = new byte[16];
byte ReadStatus = 0;
byte numBytesRead = 0;
Array.Clear(readBytes, 0, numBytesToRead);
if (!isOpened())
{
return(CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_ERROR);
}
//if (!cancel()) return CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_INVALID_DEVICE_OBJECT;
targetAddress[0] = OffsetAddr;
ret = CP2112_DLL.HidSmbus_AddressReadRequest(m_hidSmbus, slaveAddress, numBytesToRead, 1, targetAddress);
if (ret != CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_SUCCESS)
{
return(ret);
}
ushort readCont = 0;
do
{
ret = CP2112_DLL.HidSmbus_ForceReadResponse(m_hidSmbus, numBytesToRead);
if (ret != CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_SUCCESS)
{
return(ret);
}
ret = CP2112_DLL.HidSmbus_GetReadResponse(m_hidSmbus, ref ReadStatus,
BufTmp, 64, ref numBytesRead);
// CP2112_DLL.HidSmbus_CancelTransfer(m_hidSmbus);
if (ret != CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_SUCCESS)
{
break;
}
if (ReadStatus != (byte)CP2112_DLL.HID_SMBUS_TRANSFER_S0.HID_SMBUS_S0_ERROR)
{
Array.Copy(BufTmp, 0, readBytes, readCont, numBytesRead);
readCont += numBytesRead;
}
else
{
return(CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_ERROR);
}
}while ((ReadStatus == (byte)CP2112_DLL.HID_SMBUS_TRANSFER_S0.HID_SMBUS_S0_BUSY)
);
return(ret);
}
private CP2112_DLL.HID_SMBUS_STATUS Read3(byte slaveAddress, ushort numBytesToRead,
byte OffsetAddr, ref byte[] readBytes)
{
byte[] targetAddress = new byte[1];
targetAddress[0] = OffsetAddr;
byte[] BufTmp = new byte[255];
byte ReadStatus = 0;
byte numBytesRead = 0;
ushort readCont = 0;
CP2112_DLL.HID_SMBUS_STATUS ret = CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_ERROR;
if (!isOpened())
{
return(CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_ERROR);
}
ret = CP2112_DLL.HidSmbus_SetTimeouts(m_hidSmbus, 100);
if (ret != CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_SUCCESS)
{
return(ret);
}
ret = CP2112_DLL.HidSmbus_AddressReadRequest(m_hidSmbus, slaveAddress, numBytesToRead, 1, targetAddress);
Util.Delay(50);
ret = CP2112_DLL.HidSmbus_ForceReadResponse(m_hidSmbus, numBytesToRead);
if (ret != CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_SUCCESS)
{
return(ret);
}
Util.Delay(20);
do
{
ret = CP2112_DLL.HidSmbus_GetReadResponse(m_hidSmbus, ref ReadStatus,
BufTmp, 64, ref numBytesRead);
// CP2112_DLL.HidSmbus_CancelTransfer(m_hidSmbus);
if (ret != CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_SUCCESS)
{
break;
}
if (ReadStatus != (byte)CP2112_DLL.HID_SMBUS_TRANSFER_S0.HID_SMBUS_S0_ERROR)
{
Array.Copy(BufTmp, 0, readBytes, readCont, numBytesRead);
readCont += numBytesRead;
}
else
{
return(CP2112_DLL.HID_SMBUS_STATUS.HID_SMBUS_ERROR);
}
}while (readCont < numBytesToRead);
//ret = CP2112_DLL.HidSmbus_GetReadResponse(m_hidSmbus, ref ReadStatus,
// BufTmp, 255, ref numBytesRead);
//Array.Copy(BufTmp, 0, readBytes, 0, numBytesRead);
CP2112_DLL.HidSmbus_CancelTransfer(m_hidSmbus);
return(ret);
}