/// <summary>
/// 使用配置文件初始化AIThing
/// </summary>
/// <param name="dataFileParentDirectory">存放所有数据文件的根文件夹路径</param>
/// <param name="configFilePath">配置文件完整路径</param>
public void InitAIThing(string dataFileParentDirectory, string configFilePath)
{
//用读到的配置文件初始化AI
staticConfig = new StaticConfig(configFilePath);
subInit(dataFileParentDirectory, staticConfig);
}
public void InitAIThing(string dataFileParentDirectory)
{
//使用默认值初始化AI
StaticConfig staticConfig = new StaticConfig();
subInit(dataFileParentDirectory, staticConfig);
}
/// <summary>
/// 读取配置文件，构造新实例
/// </summary>
/// <param name="filePath">配置文件完整路径</param>
public StaticConfig(string filePath)
{
//读取配置文件
FileStream fs = new FileStream(filePath, FileMode.Open);
StreamReader fileStreamReader = new StreamReader(fs);
string configJson = fileStreamReader.ReadToEnd();
fileStreamReader.Close();
//反序列化后为属性赋值
StaticConfig readConfig = JsonConvert.DeserializeObject <StaticConfig>(configJson);
AITriggerType = readConfig.AITriggerType;
TerminalConfig = readConfig.TerminalConfig;
MinimumVolt = readConfig.MinimumVolt;
MaximumVolt = readConfig.MaximumVolt;
SampleRate = readConfig.SampleRate;
TriggerSource = readConfig.TriggerSource;
AITriggerEdge = readConfig.AITriggerEdge;
AnalogTriggerLevel = readConfig.AnalogTriggerLevel;
ClkSource = readConfig.ClkSource;
ClkActiveEdge = readConfig.ClkActiveEdge;
AISamplesMode = readConfig.AISamplesMode;
SamplesPerChannel = readConfig.SamplesPerChannel;
ReadSamplePerTime = readConfig.ReadSamplePerTime;
Channel = readConfig.Channel;
AutoReArm = readConfig.AutoReArm;
ChannelNames = readConfig.ChannelNames;
TotalSampleLengthPerChannel = readConfig.TotalSampleLengthPerChannel;
}
private void subInit(string dataFileParentDirectory, StaticConfig staticConfig)
{
DataFileParentDirectory = dataFileParentDirectory;
ai.InitAI(staticConfig);
//订阅AI的event
subscribeEvent();
//如果AutoReArm为真，则自动开始任务
if (AutoReArm == true)
{
TryArm();
}
}
/// <summary>
/// 从文件中读出指定通道的数据片段
/// </summary>
/// <param name="channelNo">指定的通道，从0开始</param>
/// <param name="start">大于等于0</param>
/// <param name="length">如果小于0则代表从start开始，读余下的所有点；大于等于零则代表读length个数的点</param>
/// <returns></returns>
public double[] LoadDataFromFile(int channelNo, int start, long length)
{
StaticConfig config = new StaticConfig(configFilePath);
int totalChannelNo = config.ChannelNames.Count();
long totalDataLength = config.TotalSampleLengthPerChannel;
//真正读数据的长度
long readDataCount;
if (start >= 0)
{
if (channelNo > totalChannelNo)
{
throw new Exception("通道号错误！");
}
if (length < 0)
{
readDataCount = totalDataLength - start;
}
else
{
readDataCount = length;
if (start + readDataCount > totalDataLength)
{
throw new Exception("读取请求位置和长度不匹配！");
}
}
}
else
{
throw new Exception("读取请求数据起始位置应大于等于0！");
}
double[] result = new double[readDataCount];
int doubleSize = sizeof(double);
FileStream dataFileStream = new FileStream(dataFilePath, FileMode.Open);
BinaryReader fileBinaryReader = new BinaryReader(dataFileStream);
for (long i = 0; i < readDataCount; i++)
{
//找到对应double的位置
fileBinaryReader.BaseStream.Seek((start * totalChannelNo + channelNo + i * totalChannelNo) * doubleSize, SeekOrigin.Begin);
var a = fileBinaryReader.BaseStream.Position;
result[i] = fileBinaryReader.ReadDouble();
}
fileBinaryReader.Close();
return(result);
}
public void InitAI(StaticConfig config)
{
AITriggerType = config.AITriggerType;
TerminalConfig = config.TerminalConfig;
MinimumVolt = config.MinimumVolt;
MaximumVolt = config.MaximumVolt;
SampleRate = config.SampleRate;
TriggerSource = config.TriggerSource;
AITriggerEdge = config.AITriggerEdge;
AnalogTriggerLevel = config.AnalogTriggerLevel;
ClkSource = config.ClkSource;
ClkActiveEdge = config.ClkActiveEdge;
AISamplesMode = config.AISamplesMode;
SamplesPerChannel = config.SamplesPerChannel;
ReadSamplePerTime = config.ReadSamplePerTime;
channel = config.Channel;
AutoReArm = config.AutoReArm;
}