public static extern ECANStatus InitCAN(
UInt32 DeviceType,
UInt32 DeviceInd,
UInt32 CANInd,
ref INIT_CONFIG InitConfig);
private void LoadSetting(string fileName)
{
StreamReader file;
JsonTextReader reader;
string strBaudRate = string.Empty;
try
{
//Load json file for CAN init settings
file = File.OpenText(fileName);
reader = new JsonTextReader(file);
JObject joSetting = (JObject)JToken.ReadFrom(reader);
//UInt16 DeviceID in measure system
JObject joCAN = (JObject)joSetting["CAN"];
if (true == joCAN.ContainsKey("DeviceID"))
{
DeviceID = (UInt16)joCAN["DeviceID"];
}
else
{
throw new Exception(string.Format("DeviceID is missing"));
}
//UInt16 AccCode
if (true == joCAN.ContainsKey("AccCode"))
{
AccCode = (UInt16)joCAN["AccCode"];
}
else
{
throw new Exception(string.Format("AccCode is missing"));
}
//long AccMask
if (true == joCAN.ContainsKey("AccMask"))
{
AccMask = (UInt32)joCAN["AccMask"];
}
else
{
throw new Exception(string.Format("AccMask is missing"));
}
//byte Filter
if (true == joCAN.ContainsKey("Filter"))
{
Filter = (byte)joCAN["Filter"];
}
else
{
throw new Exception(string.Format("Filter is missing"));
}
//UInt16 Mode
if (true == joCAN.ContainsKey("Mode"))
{
Mode = (byte)joCAN["Mode"];
}
else
{
throw new Exception(string.Format("Mode is missing"));
}
//int DeviceType
if (true == joCAN.ContainsKey("DeviceType"))
{
DeviceType = (UInt16)joCAN["DeviceType"];
/*string strDeviceType = (string)joCAN["DeviceType"];
* if(true == strDeviceType.ToUpper().Equals("USBCAN I"))
* {
* DeviceType = 3;
* }
* else if(strDeviceType.ToUpper().Equals("USBCAN II"))
* {
* DeviceType = 4;
* }
* else
* {
* throw new Exception(string.Format("Unsupported device: {0}", strDeviceType));
* }*/
}
else
{
throw new Exception(string.Format("DeviceType is missing"));
}
//UInt16 Channel
if (true == joCAN.ContainsKey("Channel"))
{
Channel = (UInt16)joCAN["Channel"];
}
else
{
throw new Exception(string.Format("Channel is missing"));
}
//UInt16 MaxInterval
if (true == joCAN.ContainsKey("MaxInterval"))
{
MaxInterval = (UInt16)joCAN["MaxInterval"];
}
else
{
MaxInterval = 100;//unit in ms. default value
}
//bool SwapBitOrder
if (true == joCAN.ContainsKey("SwapBitOrder"))
{
SwapBitOrder = (bool)joCAN["SwapBitOrder"];
}
else
{
SwapBitOrder = false; //default value
}
//bool SwapByteOrder
if (true == joCAN.ContainsKey("SwapByteOrder"))
{
SwapByteOrder = (bool)joCAN["SwapByteOrder"];
}
else
{
SwapByteOrder = false;//default value
}
//UInt16 BaudRate
if (true == joCAN.ContainsKey("BaudRate"))
{
strBaudRate = (string)joCAN["BaudRate"];
string pattern = @"\d+";
Regex reg = new Regex(pattern);
bool match = reg.IsMatch(strBaudRate);
int BaudRate = -1;
if (true == match)
{
MatchCollection mc = reg.Matches(strBaudRate);
if (int.TryParse(mc[0].Value, out BaudRate))
{
}
}
switch (BaudRate)
{
case 1000:
Timing0 = 0;
Timing1 = 0x14;
break;
case 800:
Timing0 = 0;
Timing1 = 0x16;
break;
case 666:
Timing0 = 0x80;
Timing1 = 0xb6;
break;
case 500:
Timing0 = 0;
Timing1 = 0x1c;
break;
case 400:
Timing0 = 0x80;
Timing1 = 0xfa;
break;
case 250:
Timing0 = 0x01;
Timing1 = 0x1c;
break;
case 200:
Timing0 = 0x81;
Timing1 = 0xfa;
break;
case 125:
Timing0 = 0x03;
Timing1 = 0x1c;
break;
case 100:
Timing0 = 0x04;
Timing1 = 0x1c;
break;
case 80:
Timing0 = 0x83;
Timing1 = 0xff;
break;
case 50:
Timing0 = 0x09;
Timing1 = 0x1c;
break;
default:
throw new Exception(string.Format("Wrong baud rate value {0} from setting", strBaudRate));
}
}
else
{
throw new Exception(string.Format("BaudRate is missing"));
}
/*
* //int DeviceID
* if(true == joCAN.ContainsKey("DeviceID"))
* {
* DeviceID = (int)joCAN["DeviceID"];
* }
* else
* {
* throw new Exception(string.Format("DeviceID is missing"));
* }*/
//init_config
InitCfg = new INIT_CONFIG();
InitCfg.AccCode = AccCode;
InitCfg.AccMask = AccMask;
InitCfg.Filter = Filter;
InitCfg.Timing0 = Timing0;
InitCfg.Timing1 = Timing1;
InitCfg.Mode = Mode;
InitCfg.Reserved = 0;
}
catch (Exception ex)
{
throw new Exception(string.Format("Failed at parse CAN Settings from {0}", ex.Message));
}
file.Close();
reader.Close();
}