private byte[] ReadResponse()
{
byte[] response = new byte[m_bufSize];
int header_len = 0;
int data_len = 0;
int h_l = 0;
int d_l = 0;
int retry = 0;
while (header_len < 3 && retry < config.RetryCount)
{
h_l = m_serialPort.Read(response, header_len, 3 - header_len);
if (h_l > 0)
{
header_len += h_l;
}
else
{
retry++;
Task.Delay(config.RetryInterval.Value).Wait();
}
}
int byte_counts = response[1] >= ModbusConstants.ModbusExceptionCode ? 2 : response[2] + 2;
while (data_len < byte_counts && retry < config.RetryCount)
{
d_l = m_serialPort.Read(response, 3 + data_len, byte_counts - data_len);
if (d_l > 0)
{
data_len += d_l;
}
else
{
retry++;
Task.Delay(config.RetryInterval.Value).Wait();
}
}
if (retry >= config.RetryCount)
{
response = null;
}
return(response);
}
public int Read(byte[] data)
{
var response = serialDevice.Read(data.Length, -1, timeout);
var count = response.Length;
for (var i = 0; i < count; i++)
{
data[i] = response[i];
}
if (monitor != null)
{
monitor('<', data, count);
}
return(count);
}