private int _ConnectDevice()
{
int port, bitrate;
if (iHandle > 0)
{
return(1);
}
port = Convert.ToInt32(tbPort.Text);
if ((port <= 0) && (port > 10))
{
MessageBox.Show("Port out of range (1 ~ 10)!!");
goto Error;
}
bitrate = Convert.ToInt32(tbBitrate.Text);
if ((bitrate < 10) || (bitrate > 400))
{
MessageBox.Show("Bitrate out of range (10 ~ 400)!!");
goto Error;
}
// Open the device
iHandle = AardvarkApi.aa_open(port);
if (iHandle <= 0)
{
MessageBox.Show("Please check I2C adapter connect!!");
goto Error;
}
// Ensure that the I2C subsystem is enabled
AardvarkApi.aa_configure(iHandle, AardvarkConfig.AA_CONFIG_SPI_I2C);
// Enable the I2C bus pullup resistors (2.2k resistors).
// This command is only effective on v2.0 hardware or greater.
// The pullup resistors on the v1.02 hardware are enabled by default.
AardvarkApi.aa_i2c_pullup(iHandle, AardvarkApi.AA_I2C_PULLUP_BOTH);
// Set the bitrate
bitrate = AardvarkApi.aa_i2c_bitrate(iHandle, bitrate);
tbPort.ReadOnly = true;
tbBitrate.ReadOnly = true;
cbConnectState.Checked = true;
return(0);
Error:
if (_DisconnectDevice() < 0)
{
MessageBox.Show("_DisconnectDevice() fail!!");
}
return(-1);
}
private int _WaitTriggerAndDelay()
{
int port, bitrate, delay;
byte bTmp;
AardvarkApi.AardvarkExt aaExt = new AardvarkApi.AardvarkExt();
port = Convert.ToInt32(tbPort.Text);
if ((port <= 0) && (port > 10))
{
MessageBox.Show("Port out of range (1 ~ 10)!!");
return(-1);
}
bitrate = Convert.ToInt32(tbBitrate.Text);
if ((bitrate < 10) || (bitrate > 400))
{
MessageBox.Show("Bitrate out of range (10 ~ 400)!!");
return(-1);
}
delay = Convert.ToInt32(tbTriggerDelay.Text);
iHandle = AardvarkApi.aa_open_ext(0, ref aaExt);
if (iHandle <= 0)
{
MessageBox.Show("Unable to open Aardvark device on port 0");
return(-1);
}
AardvarkApi.aa_configure(iHandle, AardvarkConfig.AA_CONFIG_GPIO_ONLY);
AardvarkApi.aa_i2c_pullup(iHandle, AardvarkApi.AA_I2C_PULLUP_NONE);
AardvarkApi.aa_gpio_set(iHandle, 0x00);
do
{
bTmp = (byte)AardvarkApi.aa_gpio_get(iHandle);
} while (bTmp != 3);
AardvarkApi.aa_i2c_pullup(iHandle, AardvarkApi.AA_I2C_PULLUP_BOTH);
AardvarkApi.aa_configure(iHandle, AardvarkConfig.AA_CONFIG_SPI_I2C);
bitrate = AardvarkApi.aa_i2c_bitrate(iHandle, bitrate);
tbPort.ReadOnly = true;
tbBitrate.ReadOnly = true;
cbConnectState.Checked = true;
System.Threading.Thread.Sleep(delay);
return(0);
}
