private int _MultiWrite()
{
byte[] data = new byte[256];
int index = 0, result;
byte devAddr;
if (_CheckMultiReadInput() < 0)
{
return(-1);
}
devAddr = Convert.ToByte(Convert.ToInt32(tbDevAddr.Text));
index = 0;
foreach (DataRow row in dtValue.Rows)
{
index = dtValue.Rows.IndexOf(row);
if (index == 0)
{
data[0] = Convert.ToByte(row.ItemArray[0]);
}
data[index + 1] = Convert.ToByte(row.ItemArray[1]);
}
result = Mcp2221Api.Mcp2221I2cWriteApi(mcp2221Adapter, 2, devAddr, 1, data);
if (result < 0)
{
MessageBox.Show("Mcp2221I2cWriteApi() fail: " + result);
return(-1);
}
return(0);
}
private void bSignalWrite_Click(object sender, EventArgs e)
{
byte[] data = new byte[2];
int result;
byte devAddr;
if (cbConnectState.Checked != true)
{
if (_ConnectDevice() < 0)
{
return;
}
cbConnectState.Checked = true;
}
if (_CheckSignalWriteInput() < 0)
{
return;
}
devAddr = Convert.ToByte(Convert.ToInt32(tbDevAddr.Text));
data[0] = Convert.ToByte(Convert.ToInt32(tbRegAddr.Text));
data[1] = Convert.ToByte(Convert.ToInt32(tbValue.Text));
result = Mcp2221Api.Mcp2221I2cWriteApi(mcp2221Adapter, 2, devAddr, 1, data);
if (result < 0)
{
MessageBox.Show("Mcp2221I2cWriteApi() fail: " + result);
return;
}
}
private int _ConnectDevice()
{
uint index, bitRate;
var sbVersion = new StringBuilder(10);
string version;
int result;
ushort[] deviceIndex = new ushort[16];
string[] deviceSerialNumber = new string[16];
version = Mcp2221Api.Mcp2221GetLibraryVersionApi();
if (!version.Equals("2.2b"))
{
MessageBox.Show("MCP2221 library: " + sbVersion.ToString() + " != 2.2b !!");
goto error;
}
Mcp2221Api.Mcp2221FindDevicesExtApi(16, deviceIndex, 16, deviceSerialNumber);
if (mcp2221Adapter != IntPtr.Zero)
{
return(0);
}
if (Mcp2221Api.Mcp2221GetConnectedDevicesApi() < 0)
{
goto error;
}
uint.TryParse(tbBitrate.Text, out bitRate);
bitRate = bitRate * 1000;
if ((bitRate < 46875) || (bitRate > 500000))
{
MessageBox.Show("bitRate out of range: " + bitRate);
goto error;
}
uint.TryParse(tbPort.Text, out index);
mcp2221Adapter = Mcp2221Api.Mcp2221OpenByIndexApi(index);
if (mcp2221Adapter == IntPtr.Zero)
{
goto error;
}
result = Mcp2221Api.Mcp2221SetBitrateApi(mcp2221Adapter, bitRate);
if (result < 0)
{
MessageBox.Show("Mcp2221_SetSpeed() fail: " + result);
goto error;
}
return(0);
error:
return(-1);
}
private int _DisconnectDevice()
{
if (mcp2221Adapter == IntPtr.Zero)
{
return(0);
}
Mcp2221Api.Mcp2221CloseApi(mcp2221Adapter);
mcp2221Adapter = IntPtr.Zero;
return(0);
}
private int _MultiRead()
{
byte[] buf = new byte[256];
byte[] regAddr = new byte[1];
int result;
byte devAddr, length;
dtValue.Clear();
if (_CheckMultiReadInput() < 0)
{
return(-1);
}
devAddr = Convert.ToByte(Convert.ToInt32(tbDevAddr.Text));
regAddr[0] = Convert.ToByte(Convert.ToInt32(tbRegAddr.Text));
length = Convert.ToByte(Convert.ToInt32(tbLength.Text));
if (length > 128)
{
MessageBox.Show("Length out of range: " + length);
return(-1);
}
result = Mcp2221Api.Mcp2221I2cWriteApi(mcp2221Adapter, 1, devAddr, 1, regAddr);
if (result < 0)
{
MessageBox.Show("Mcp2221I2cWriteApi() fail: " + result);
return(-1);
}
result = Mcp2221Api.Mcp2221I2cReadApi(mcp2221Adapter, length, devAddr, 1, buf);
if (result < 0)
{
MessageBox.Show("Mcp2221I2cReadApi() fail: " + result);
return(-1);
}
for (int i = 0; i < length; i++)
{
dtValue.Rows.Add(regAddr[0] + i, buf[i]);
}
return(0);
}
private int _SignalRead()
{
int result;
byte[] data = new byte[1];
byte devAddr, regAddr;
if (mcp2221Adapter == IntPtr.Zero)
{
return(0);
}
if (_CheckSignalReadInput() < 0)
{
return(-1);
}
devAddr = Convert.ToByte(Convert.ToInt32(tbDevAddr.Text));
regAddr = Convert.ToByte(Convert.ToInt32(tbRegAddr.Text));
data[0] = regAddr;
result = Mcp2221Api.Mcp2221I2cWriteApi(mcp2221Adapter, 1, devAddr, 1, data);
if (result < 0)
{
MessageBox.Show("Mcp2221I2cWriteApi() fail: " + result);
return(-1);
}
result = Mcp2221Api.Mcp2221I2cReadApi(mcp2221Adapter, 1, devAddr, 1, data);
if (result < 0)
{
MessageBox.Show("Mcp2221I2cReadApi() fail: " + result);
return(-1);
}
tbValue.Text = Convert.ToString(data[0]);
return(0);
}