/// <summary>
/// Download firmware file to slave.
/// 1. All detected slaves are set to PREOP state.
/// 2. Target slave is set to INIT state.
/// 3. Target slave is set to BOOT state.
/// 4. Firmware file is downloaded to target slave.
/// 5. Target slave is set to INIT state regardless of whether
/// the file download was successful or not.
/// </summary>
/// <param name="slaveIndex">Slave index.</param>
/// <param name="fileName">Absolute path to firmware file.</param>
/// <returns>True if operation was successful, false otherwise./returns>
public bool DownloadFirmware(int slaveIndex, string fileName)
{
FileInfo fileInfo = new FileInfo(fileName);
if (!fileInfo.Exists)
{
return(false);
}
bool success = false;
if (EcHL.RequestCommonState(this.Context, (UInt16)SlaveState.PreOp) == 1)
{
UInt16 currentState = EcHL.RequestState(this.Context, slaveIndex, (UInt16)SlaveState.Init);
if (currentState == (UInt16)SlaveState.Init)
{
currentState = EcHL.RequestState(this.Context, slaveIndex, (UInt16)SlaveState.Boot);
if (currentState == (UInt16)SlaveState.Boot)
{
int currentPackageNumber = -1;
int totalPackages = 0;
int remainingSize = -1;
EcHL.FOECallback callback = (slaveIndex, packageNumber, datasize) =>
{
if (packageNumber == 0)
{
_logger.LogInformation($"FoE: Write {datasize} bytes to {slaveIndex}. slave");
}
else
{
_logger.LogInformation($"FoE: {packageNumber}. package with {remainingSize - datasize} bytes written to {slaveIndex}. slave. Remaining data: {datasize} bytes");
}
if (currentPackageNumber != packageNumber)
{
currentPackageNumber = packageNumber;
if (packageNumber != 0)
{
totalPackages++;
}
}
remainingSize = datasize;
return(0);
};
EcHL.RegisterFOECallback(this.Context, callback);
GC.KeepAlive(callback);
int wk = EcHL.DownloadFirmware(this.Context, slaveIndex, fileName, (int)fileInfo.Length);
_logger.LogInformation($"FoE: {totalPackages} packages written");
success = (remainingSize == 0) && (wk > 0);
EcHL.RequestState(this.Context, slaveIndex, (UInt16)SlaveState.Init);
}
}
}
return(success);
}