public bool ConnectIso15765()
{
List<byte> value = new List<byte>();
m_status = m_j2534Interface.PassThruConnect(m_deviceId, ProtocolID.ISO15765, ConnectFlag.NONE, BaudRate.ISO15765, ref m_channelId);
if (J2534Err.STATUS_NOERROR != m_status)
{
return false;
}
int filterId = 0;
byte i;
for (i = 0; i < 1; i++)
{
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, (byte)(0xE8 + i) });
PassThruMsg flowControlMsg = new PassThruMsg(ProtocolID.ISO15765, TxFlag.ISO15765_FRAME_PAD, new byte[] { 0x00, 0x00, 0x07, (byte)(0xE0 + i) });
m_status = m_j2534Interface.PassThruStartMsgFilter(
m_channelId,
FilterType.FLOW_CONTROL_FILTER,
maskMsg.ToIntPtr(),
patternMsg.ToIntPtr(),
flowControlMsg.ToIntPtr(),
ref filterId);
if (J2534Err.STATUS_NOERROR != m_status)
{
m_j2534Interface.PassThruDisconnect(m_channelId);
return false;
}
}
if(!ReadObdPid(0x01,0x00,ProtocolID.ISO15765, ref value))
{
m_j2534Interface.PassThruDisconnect(m_channelId);
return false;
}
return true;
}
/*
*
* Example 2:
* Use the J2534 protocol to send and receive a message (w/o error checking)
*
*/
private void SendReceiveNoErrorChecking(object sender, EventArgs e)
{
J2534Extended passThru = new J2534Extended();
// Find all of the installed J2534 passthru devices
List<J2534Device> availableJ2534Devices = J2534Detect.ListDevices();
J2534Device j2534Device;
var sd = new SelectDevice();
if (sd.ShowDialog() == DialogResult.OK)
{
j2534Device = sd.Device;
}
else
{
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(j2534Device);
// Attempt to open a communication link with the pass thru device
int deviceId = 0;
passThru.PassThruOpen(IntPtr.Zero, ref deviceId);
// Open a new channel configured for ISO15765 (CAN)
int channelId = 0;
passThru.PassThruConnect(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 });
IntPtr maskMsgPtr = maskMsg.ToIntPtr();
IntPtr patternMsgPtr = patternMsg.ToIntPtr();
IntPtr flowControlMsgPtr = flowControlMsg.ToIntPtr();
passThru.PassThruStartMsgFilter(channelId, FilterType.FLOW_CONTROL_FILTER, maskMsgPtr, patternMsgPtr, flowControlMsgPtr, 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 });
var txMsgPtr = txMsg.ToIntPtr();
int numMsgs = 1;
passThru.PassThruWriteMsgs(channelId, txMsgPtr, ref numMsgs, 50);
// Read messages in a loop until we either timeout or we receive data
numMsgs = 1;
IntPtr rxMsgs = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(PassThruMsg)) * numMsgs);
J2534Err status = J2534Err.STATUS_NOERROR;
while (J2534Err.STATUS_NOERROR == status)
status = passThru.PassThruReadMsgs(channelId, 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.
if ((J2534Err.ERR_BUFFER_EMPTY == status || J2534Err.ERR_TIMEOUT == status) && numMsgs > 0)
{
foreach (PassThruMsg msg in rxMsgs.AsList<PassThruMsg>(numMsgs))
{
//
//
// Now do something with the data!
//
//
}
}
// Disconnect this channel
passThru.PassThruDisconnect(channelId);
// When we are done with the device, we can free the library.
passThru.FreeLibrary();
}
private bool ReadObdPid(byte mode, byte pid, ProtocolID protocolId, ref List<byte> value)
{
PassThruMsg txMsg = new PassThruMsg();
int timeout;
txMsg.ProtocolID = protocolId;
switch (protocolId)
{
case ProtocolID.ISO15765:
txMsg.TxFlags = TxFlag.ISO15765_FRAME_PAD;
if (mode == 0x03 || mode == 0x04)
{
txMsg.SetBytes(new byte[] { 0x00, 0x00, 0x07, 0xdf, mode});
}
else
{
txMsg.SetBytes(new byte[] { 0x00, 0x00, 0x07, 0xdf, mode, pid });
}
timeout = 50;
break;
case ProtocolID.J1850PWM:
case ProtocolID.J1850VPW:
case ProtocolID.ISO9141:
case ProtocolID.ISO14230:
byte protocolByte = (byte)((protocolId == ProtocolID.J1850PWM) ? 0x61 : 0x68);
txMsg.TxFlags = TxFlag.NONE;
txMsg.SetBytes(new byte[]{protocolByte, 0x6A, 0xF1, mode, pid});
timeout = 100;
break;
default:
return false;
}
m_j2534Interface.ClearRxBuffer(m_channelId);
int numMsgs = 1;
m_status = m_j2534Interface.PassThruWriteMsgs(m_channelId, txMsg.ToIntPtr(), ref numMsgs, timeout);
if (J2534Err.STATUS_NOERROR != m_status)
{
return false;
}
IntPtr rxMsgs = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(PassThruMsg)) * numMsgs);
numMsgs = 1;
while (J2534Err.STATUS_NOERROR == m_status)
{
m_status = m_j2534Interface.PassThruReadMsgs(m_channelId, rxMsgs, ref numMsgs, timeout * 4);
}
if (J2534Err.ERR_BUFFER_EMPTY == m_status || J2534Err.ERR_TIMEOUT == m_status)
{
if (numMsgs > 0)
{
// Select the last value
PassThruMsg msg = rxMsgs.AsMsgList(numMsgs).Last();
value = msg.GetBytes().ToList();
value.RemoveRange(0, txMsg.GetBytes().Length);
return true;
}
return false;
}
return false;
}
