/// <summary>
/// Changes the baud rate of the device on the interface where this command is being received.
/// Do not forget to change the host baud rate after this command (MeComSetDefaultSettings).
/// Most devices will fall back to the old baud rate if there is no further command being received after CS within 5s.
/// </summary>
/// <param name="address">Device Address. Use null to use the DefaultDeviceAddress defined on MeComQuerySet.</param>
/// <param name="newBaudRate">New baud rate to be set on the devices interface.</param>
public void ChangeComSpeed(byte?address, uint newBaudRate)
{
try
{
MeComPacket txFrame = new MeComPacket('#', address);
MeComVarConvert.AddString(txFrame.Payload, "CS");
MeComVarConvert.AddUint32(txFrame.Payload, newBaudRate);
MeComPacket RxFrame = meQuerySet.Set(txFrame);
}
catch (Exception Ex)
{
throw new ComCommandException(String.Format("Speed Change failed: Address: {0}, Detail: {1}", address, Ex.Message), Ex);
}
}
/// <summary>
/// Writes an array of FLOAT32, INT32, DOUBLE64 or ASCII (char) values to the device.
/// The data length is given by the value parameter.
/// This method does only return when all data is downloaded.
/// The data is being written in an loop with several sub queries.
/// During this command is working, it is possible to use other commands with an different thread.
/// </summary>
/// <param name="address">Device Address. Use null to use the DefaultDeviceAddress defined on MeComQuerySet.</param>
/// <param name="parameterId">Device Parameter ID.</param>
/// <param name="instance">Parameter Instance. (usually 1)</param>
/// <param name="type">Specifies the type of the value to be written.</param>
/// <param name="values">Data to be written (can be float[], int[], double[] or string.</param>
/// <param name="callback">Is called every time when the progress has changed.</param>
/// <exception cref="ComCommandException">when the command fails. Check the inner exception for details.</exception>
public void SetBigData(byte?address, UInt16 parameterId, byte instance, MeParType type, dynamic values, ProgressUpdateCallback callback)
{
int maxDataSize = meQuerySet.MaxTxPayloadSize - 22; //-xx Bytes used for commands
int nrOfElementsPerPackage = 0;
switch (type)
{
case MeParType.FLOAT32:
nrOfElementsPerPackage = maxDataSize / 8;
break;
case MeParType.INT32:
nrOfElementsPerPackage = maxDataSize / 8;
break;
case MeParType.DOUBLE64:
nrOfElementsPerPackage = maxDataSize / 16;
break;
case MeParType.LATIN1:
values += (char)0; //Add zero terminator
nrOfElementsPerPackage = maxDataSize / 2;
break;
case MeParType.BYTE:
nrOfElementsPerPackage = maxDataSize / 2;
break;
default:
throw new ArgumentOutOfRangeException("Unknown EParType: " + type);
}
int nrOfPackages = (values.Length - 1) / nrOfElementsPerPackage + 1;
try
{
int totalSentElements = 0;
MemoryStream totalStream = new MemoryStream();
for (int packageNr = 0; packageNr < nrOfPackages; packageNr++)
{
bool lastPackage = (packageNr + 1) == nrOfPackages;
int nrOfElementsInThisPackage = values.Length - totalSentElements;
if (nrOfElementsInThisPackage > nrOfElementsPerPackage)
{
nrOfElementsInThisPackage = nrOfElementsPerPackage;
}
MeComPacket txFrame = new MeComPacket('#', address);
MeComVarConvert.AddString(txFrame.Payload, "VB");
MeComVarConvert.AddUint16(txFrame.Payload, parameterId);
MeComVarConvert.AddUint8(txFrame.Payload, instance);
MeComVarConvert.AddUint32(txFrame.Payload, (uint)totalSentElements); //write start position
MeComVarConvert.AddUint16(txFrame.Payload, (ushort)nrOfElementsInThisPackage);
if (lastPackage)
{
MeComVarConvert.AddUint8(txFrame.Payload, 1);
}
else
{
MeComVarConvert.AddUint8(txFrame.Payload, 0);
}
switch (type)
{
case MeParType.FLOAT32:
for (int i = 0; i < nrOfElementsInThisPackage; i++)
{
MeComVarConvert.AddFloat32(txFrame.Payload, values[totalSentElements + i]);
}
break;
case MeParType.INT32:
for (int i = 0; i < nrOfElementsInThisPackage; i++)
{
MeComVarConvert.AddUint32(txFrame.Payload, values[totalSentElements + i]);
}
break;
case MeParType.DOUBLE64:
for (int i = 0; i < nrOfElementsInThisPackage; i++)
{
MeComVarConvert.AddDouble64(txFrame.Payload, values[totalSentElements + i]);
}
break;
case MeParType.LATIN1:
MeComVarConvert.AddEncodedString(txFrame.Payload, values.Substring(totalSentElements, nrOfElementsInThisPackage));
break;
case MeParType.BYTE:
for (int i = 0; i < nrOfElementsInThisPackage; i++)
{
MeComVarConvert.AddUint8(txFrame.Payload, values[totalSentElements + i]);
}
break;
}
int timeout = 0;
while (timeout < 50) //Manage device busy
{
timeout++;
try
{
meQuerySet.Set(txFrame);
break;
}
catch (ServerException ex)
{
if (ex.ServerErrorCode != 2)
{
throw;
}
TraceLog.Verbose("Device busy detected. Timeout {0}", timeout);
Thread.Sleep(10);
}
}
totalSentElements += nrOfElementsInThisPackage;
callback?.Invoke(100.0 / nrOfPackages * (packageNr + 1));
}
}
catch (Exception Ex)
{
throw new ComCommandException(String.Format("Set Value failed: Address: {0}; ID: {1}; Inst: {2}; Detail: {3}", address, parameterId, instance, Ex.Message), Ex);
}
}
/// <summary>
/// Reads an array of FLOAT32, INT32, DOUBLE64 or ASCII (char) values form the device.
/// The data length is given by the device.
/// This method does only return when the device tells the host, that all data is read.
/// The data is read in an loop with several sub queries.
/// During this command is working, it is possible to use other commands with an different thread.
/// </summary>
/// <param name="address">Device Address. Use null to use the DefaultDeviceAddress defined on MeComQuerySet.</param>
/// <param name="parameterId">Device Parameter ID.</param>
/// <param name="instance">Parameter Instance. (usually 1)</param>
/// <param name="type">Specifies the type of the value to be read.</param>
/// <param name="callback">Is called every time when the progress has changed.</param>
/// <param name="expectedNrOfElements">Defines the expected number of elements to calculate the progress for the callback function.</param>
/// <returns>Returned value.</returns>
/// <exception cref="ComCommandException">when the command fails. Check the inner exception for details.</exception>
public dynamic GetBigData(byte?address, UInt16 parameterId, byte instance, MeParType type, ProgressUpdateCallback callback = null, int expectedNrOfElements = 0)
{
dynamic value;
try
{
ushort rcvElements;
bool hasMoreData;
uint totalReadElements = 0;
MemoryStream totalStream = new MemoryStream();
do
{
MeComPacket txFrame = new MeComPacket('#', address);
MeComVarConvert.AddString(txFrame.Payload, "?VB");
MeComVarConvert.AddUint16(txFrame.Payload, parameterId);
MeComVarConvert.AddUint8(txFrame.Payload, instance);
MeComVarConvert.AddUint32(txFrame.Payload, totalReadElements); //Read start position
MeComVarConvert.AddUint16(txFrame.Payload, UInt16.MaxValue); //Maximum Elements to read per call.
MeComPacket rxFrame = meQuerySet.Query(txFrame);
rcvElements = MeComVarConvert.ReadUint16(rxFrame.Payload);
hasMoreData = MeComVarConvert.ReadUint8(rxFrame.Payload) == 1;
totalReadElements += rcvElements;
if (rcvElements > 0)
{
rxFrame.Payload.CopyTo(totalStream);
}
callback?.Invoke(100.0 / expectedNrOfElements * totalReadElements);
} while (hasMoreData);
totalStream.Position = 0;
callback?.Invoke(100);
switch (type)
{
case MeParType.FLOAT32:
value = new float[totalReadElements];
break;
case MeParType.INT32:
value = new int[totalReadElements];
break;
case MeParType.DOUBLE64:
value = new double[totalReadElements];
break;
case MeParType.LATIN1:
value = "";
break;
case MeParType.BYTE:
value = new byte[totalReadElements];
break;
default:
throw new ArgumentOutOfRangeException("Unknown EParType: " + type);
}
for (int i = 0; i < totalReadElements; i++)
{
switch (type)
{
case MeParType.FLOAT32:
value[i] = MeComVarConvert.ReadFloat32(totalStream);
break;
case MeParType.INT32:
value[i] = MeComVarConvert.ReadInt32(totalStream);
break;
case MeParType.DOUBLE64:
value[i] = MeComVarConvert.ReadDouble64(totalStream);
break;
case MeParType.LATIN1:
value = MeComVarConvert.ReadEncodedString(totalStream, (int)totalReadElements);
return(value);
case MeParType.BYTE:
value[i] = MeComVarConvert.ReadUint8(totalStream);
break;
default:
throw new ArgumentOutOfRangeException("Unknown EParType: " + type);
}
}
return(value);
}
catch (Exception Ex)
{
throw new ComCommandException(String.Format("Get Value failed: Address: {0}; ID: {1}; Inst: {2}; Detail: {3}", address, parameterId, instance, Ex.Message), Ex);
}
}
