|
public LoadLibrary ( |
||
| device | ||
| return | bool | |
private void CmdReadVinClick(object sender, EventArgs e)
{
J2534 passThru = new J2534();
string vin = "";
// Find all of the installed J2534 passthru devices
List<J2534Device> availableJ2534Devices = J2534Detect.ListDevices();
if (availableJ2534Devices.Count == 0)
{
MessageBox.Show("Could not find any installed J2534 devices.");
return;
}
// We will always choose the first J2534 device in the list, if there are multiple devices
// installed, you should do something more intelligent.
passThru.LoadLibrary(availableJ2534Devices[0]);
ObdComm comm = new ObdComm(passThru);
if (!comm.DetectProtocol())
{
MessageBox.Show(String.Format("Error connecting to device. Error: {0}", comm.GetLastError()));
comm.Disconnect();
return;
}
if (!comm.GetVin(ref vin))
{
MessageBox.Show(String.Format("Error reading VIN. Error: {0}", comm.GetLastError()));
comm.Disconnect();
return;
}
comm.Disconnect();
// When we are done with the device, we can free the library.
passThru.FreeLibrary();
txtReadVin.Text = vin;
}
/*
*
* Example 2:
* Use the J2534 protocol to send and receive a message (w/o error checking)
*
*/
private void SendReceiveNoErrorChecking(object sender, EventArgs e)
{
J2534 passThru = new J2534();
// Find all of the installed J2534 passthru devices
List<J2534Device> availableJ2534Devices = J2534Detect.ListDevices();
// We will always choose the first J2534 device in the list, if there are multiple devices
// installed, you should do something more intelligent.
passThru.LoadLibrary(availableJ2534Devices[0]);
// Attempt to open a communication link with the pass thru device
int deviceId = 0;
passThru.Open(ref deviceId);
// Open a new channel configured for ISO15765 (CAN)
int channelId = 0;
passThru.Connect(deviceId, ProtocolID.ISO15765, ConnectFlag.NONE, BaudRate.ISO15765, ref channelId);
// Set up a message filter to watch for response messages
int filterId = 0;
PassThruMsg maskMsg = new PassThruMsg(
ProtocolID.ISO15765,
TxFlag.ISO15765_FRAME_PAD,
new byte[] { 0xff, 0xff, 0xff, 0xff });
PassThruMsg patternMsg = new PassThruMsg(
ProtocolID.ISO15765,
TxFlag.ISO15765_FRAME_PAD,
new byte[] { 0x00, 0x00, 0x07, 0xE8});
PassThruMsg flowControlMsg = new PassThruMsg(
ProtocolID.ISO15765,
TxFlag.ISO15765_FRAME_PAD,
new byte[] { 0x00, 0x00, 0x07, 0xE0});
passThru.StartMsgFilter(channelId, FilterType.FLOW_CONTROL_FILTER, ref maskMsg, ref patternMsg, ref flowControlMsg, ref filterId);
// Clear out the response buffer so we know we're getting the freshest possible data
passThru.ClearRxBuffer(channelId);
// Finally we can send the message!
PassThruMsg txMsg = new PassThruMsg(
ProtocolID.ISO15765,
TxFlag.ISO15765_FRAME_PAD,
new byte[] { 0x00, 0x00, 0x07, 0xdf, 0x01, 0x00 });
int numMsgs = 1;
passThru.WriteMsgs(channelId, ref txMsg, ref numMsgs, 50);
// Read messages in a loop until we either timeout or we receive data
List<PassThruMsg> rxMsgs = new List<PassThruMsg>();
J2534Err status = J2534Err.STATUS_NOERROR;
numMsgs = 1;
while (J2534Err.STATUS_NOERROR == status)
status = passThru.ReadMsgs(channelId, ref rxMsgs, ref numMsgs, 200);
// If we received data, we want to extract the data of interest. I'm removing the reflection of the transmitted message.
List<byte> responseData;
if ((J2534Err.ERR_BUFFER_EMPTY == status || J2534Err.ERR_TIMEOUT == status) && rxMsgs.Count > 1)
{
responseData = rxMsgs[rxMsgs.Count - 1].Data.ToList();
responseData.RemoveRange(0, txMsg.Data.Length);
}
//
//
// Now do something with the data!
//
//
// Disconnect this channel
passThru.Disconnect(channelId);
// When we are done with the device, we can free the library.
passThru.FreeLibrary();
}
private void btn_Action_Click(object sender, RoutedEventArgs e)
{
if (!_action)
{
passThru = new J2534();
this.UpdateText("\n--- Session start " + DateTime.Now.ToString() + " --- ");
//this.StatusBox.Dispatcher.Invoke(new UpdateTextCallback(this.UpdateText), new object[] { "\n---Session start " + DateTime.Now.ToString() + " ---" });
this.UpdateText(((J2534Device)InterfaceComboBox.SelectedItem).Name + " interface being used");
//this.StatusBox.Dispatcher.Invoke(new UpdateTextCallback(this.UpdateText), new object[] { ((J2534Device)InterfaceComboBox.SelectedItem).Name + " interface being used" });
if (!passThru.LoadLibrary((J2534Device)InterfaceComboBox.SelectedItem))
{
this.UpdateText("Failed to load interface library!");
//this.StatusBox.Dispatcher.Invoke(new UpdateTextCallback(this.UpdateText), new object[] { "Failed to load interface library!" });
_action = false;
}
_action = true;
}
else
{
this.UpdateText(((J2534Device)InterfaceComboBox.SelectedItem).Name + " interface is released");
//this.StatusBox.Dispatcher.Invoke(new UpdateTextCallback(this.UpdateText), new object[] { ((J2534Device)InterfaceComboBox.SelectedItem).Name + " interface is released" });
if (!passThru.FreeLibrary())
{
this.UpdateText("Failed to unload interface library!");
//this.StatusBox.Dispatcher.Invoke(new UpdateTextCallback(this.UpdateText), new object[] { "Failed to unload interface library!" });
}
_action = false;
}
//if (!_action) { this.StatusBox.Dispatcher.Invoke(new UpdateTextCallback(this.UpdateText), new object[] { "---Session end " + DateTime.Now.ToString() + " ---" }); }
if (!_action) { this.UpdateText("--- Session end " + DateTime.Now.ToString() + " ---" ); }
this.SetButtonState();
}
