private int _Mcp2221Disconnect()
{
int result;
if (ipHandler == IntPtr.Zero)
{
return(0);
}
if (as_atAdapterType != AdapterSelector.AdapterType.AS_AT_MCP2221)
{
return(-1);
}
result = Mcp2221Api.Mcp2221CloseApi(ipHandler);
if (result < 0)
{
return(-1);
}
ipHandler = IntPtr.Zero;
as_atAdapterType = AdapterSelector.AdapterType.AS_AT_DUMMY;
return(0);
}
public int UpdateMcp2221AdapterApi()
{
ushort[] deviceIndex = new ushort[16];
string[] deviceSerialNumber = new string[16];
string tmp;
int i, count;
lMcp2221Adapter.Clear();
// Find all the attached devices
count = Mcp2221Api.Mcp2221FindDevicesExtApi(16, deviceIndex, 16, deviceSerialNumber);
if (count == 0)
{
lMcp2221Adapter.Add("Cannot find any adapter!!");
return(0);
}
for (i = 0; i < count; i++)
{
tmp = deviceIndex[i].ToString() + " : " + deviceSerialNumber[i].ToString();
lMcp2221Adapter.Add(tmp);
}
return(0);
}
private int _Mcp2221Connect(int port)
{
int result;
if ((port < 0) || (port > 16))
{
return(-1);
}
if (ipHandler != IntPtr.Zero)
{
goto Exit;
}
ipHandler = Mcp2221Api.Mcp2221OpenByIndexApi(Convert.ToUInt32(port));
if (ipHandler == IntPtr.Zero)
{
MessageBox.Show("Please check I2C adapter connect!!");
goto Error;
}
// Set the bitrate
result = Mcp2221Api.Mcp2221SetBitrateApi(ipHandler, Convert.ToUInt32(iBitrate) * 1000);
if (result < 0)
{
goto Error;
}
Exit:
return(0);
Error:
return(-1);
}
private int _Mcp2221Write(byte devAddr, byte regAddr, byte length, byte[] data)
{
byte[] buf = new byte[length + 1];
buf[0] = regAddr;
Array.Copy(data, 0, buf, 1, length);
Mcp2221Api.Mcp2221I2cWriteApi(ipHandler, Convert.ToUInt32(length + 1), devAddr, 1, buf);
return(0);
}
private int _AardvarkRead16(byte devAddr, byte[] regAddr, byte length, byte[] data)
{
byte[] reg = { regAddr[0], regAddr[1] };
int result;
result = Mcp2221Api.Mcp2221I2cWriteApi(ipHandler, 2, devAddr, 1, reg);
if (result < 0)
{
return(-1);
}
result = Mcp2221Api.Mcp2221I2cReadApi(ipHandler, length, devAddr, 1, data);
if (result < 0)
{
return(-1);
}
return(length);
}
private int _Mcp2221Read(byte devAddr, byte regAddr, byte length, byte[] data)
{
byte[] reg = { regAddr };
int result;
result = Mcp2221Api.Mcp2221I2cWriteApi(ipHandler, 1, devAddr, 1, reg);
if (result < 0)
{
return(result);
}
result = Mcp2221Api.Mcp2221I2cReadApi(ipHandler, length, devAddr, 1, data);
if (result < 0)
{
return(-3);
}
return(length);
}
public int ReadRawApi(byte devAddr, byte length, byte[] data)
{
int result;
switch (as_atAdapterType)
{
case AdapterSelector.AdapterType.AS_AT_DUMMY:
break;
case AdapterSelector.AdapterType.AS_AT_AARDVARK:
if (iHandler <= 0)
{
if (ConnectApi() < 0)
{
MessageBox.Show("I2cMasterConnectApi() fail!!");
}
return(-1);
}
return(AardvarkApi.aa_i2c_read(iHandler, devAddr, AardvarkI2cFlags.AA_I2C_NO_FLAGS, length, data));
case AdapterSelector.AdapterType.AS_AT_MCP2221:
if (ipHandler == IntPtr.Zero)
{
if (ConnectApi() < 0)
{
MessageBox.Show("I2cMasterConnectApi() fail!!");
}
return(-1);
}
result = Mcp2221Api.Mcp2221I2cReadApi(ipHandler, length, devAddr, 1, data);
if (result < 0)
{
return(-3);
}
return(length);
default:
break;
}
return(0);
}
public int SetTimeoutApi(UInt16 timeout)
{
switch (as_atAdapterType)
{
case AdapterSelector.AdapterType.AS_AT_DUMMY:
break;
case AdapterSelector.AdapterType.AS_AT_AARDVARK:
if (iHandler <= 0)
{
if (ConnectApi() < 0)
{
MessageBox.Show("I2cMasterConnectApi() fail!!");
}
return(-1);
}
return(AardvarkApi.aa_i2c_bus_timeout(iHandler, timeout));
case AdapterSelector.AdapterType.AS_AT_MCP2221:
if (timeout > 0xFF)
{
return(-1);
}
if (ipHandler == IntPtr.Zero)
{
if (ConnectApi() < 0)
{
MessageBox.Show("I2cMasterConnectApi() fail!!");
}
return(-1);
}
return(Mcp2221Api.Mcp2221SetAdvancedCommParamsApi(ipHandler, Convert.ToByte(timeout), 1));
default:
break;
}
return(-1);
}
public int WriteRawApi(byte devAddr, byte length, byte[] data)
{
switch (as_atAdapterType)
{
case AdapterSelector.AdapterType.AS_AT_DUMMY:
break;
case AdapterSelector.AdapterType.AS_AT_AARDVARK:
if (iHandler <= 0)
{
if (ConnectApi() < 0)
{
MessageBox.Show("I2cMasterConnectApi() fail!!");
}
return(-1);
}
AardvarkApi.aa_i2c_write(iHandler, devAddr, AardvarkI2cFlags.AA_I2C_NO_FLAGS, length, data);
AardvarkApi.aa_sleep_ms(100);
return(0);
case AdapterSelector.AdapterType.AS_AT_MCP2221:
if (ipHandler == IntPtr.Zero)
{
if (ConnectApi() < 0)
{
MessageBox.Show("I2cMasterConnectApi() fail!!");
}
return(-1);
}
Mcp2221Api.Mcp2221I2cWriteApi(ipHandler, Convert.ToUInt32(length), devAddr, 1, data);
return(0);
default:
break;
}
return(0);
}