public void GetLastLogQueryResult(ISerial serial, int timeout)
{
List <byte> list = new List <byte>(5);
list.Add(37);
list.Add(254);
list.Add(21);
list.Add(0);
list.Add(GetChecksum(list));
byte[] stream = list.ToArray();
serial.Write(stream, 0, stream.Length);
byte[] rawBuffer = new byte[10];
int response_offest = 0;
if (serial.isEcho())
{
response_offest = stream.Length;
}
Array.Resize(ref rawBuffer, (int)(response_offest + 5));
long timeout_limit = DateTimeOffset.Now.ToUnixTimeMilliseconds() + (timeout);
while (serial.BytesToRead() < rawBuffer.Length)
{
if (DateTimeOffset.Now.ToUnixTimeMilliseconds() > timeout_limit)
{
//if even no data response no puck error..
if (serial.BytesToRead() <= response_offest)
{
throw new IOException();
}
else
{
throw new TimeoutException();
}
}
Thread.Sleep(10);
}
serial.Read(rawBuffer, 0, rawBuffer.Length);
byte[] response = new byte[5];
Array.Copy(rawBuffer, response.Length, response, 0, response.Length);
if (response[0] != 0x06)
{
throw new LexiWriteException(response);
}
}
public void TriggerReadEventLogs(ISerial serial, DateTime start, DateTime end, int timeout)
{
List <byte> list = new List <byte>(17);
list.Add(37);
list.Add(254);
list.Add(19);
list.Add(10);
list.Add(GetChecksum(list));
list.Add(1);
list.Add(1);
if (start.CompareTo(new DateTime(1970, 1, 1, 0, 0, 0)) < 0)
{
start = new DateTime(1970, 1, 1, 0, 0, 0);
}
byte[] timeSinceEventEpoch = GetTimeSinceEventEpoch(start);
list.AddRange(timeSinceEventEpoch.Take(4));
byte[] timeSinceEventEpoch2 = GetTimeSinceEventEpoch(end);
list.AddRange(timeSinceEventEpoch2.Take(4));
list.AddRange(CalcCrcNew(list.Skip(5).Take(10).ToArray()));
byte[] stream = list.ToArray();
serial.Write(stream, 0, stream.Length);
byte[] rawBuffer = new byte[2];
int response_offest = 0;
if (serial.isEcho())
{
response_offest = stream.Length;
}
Array.Resize(ref rawBuffer, (int)(response_offest + 2));
long timeout_limit = DateTimeOffset.Now.ToUnixTimeMilliseconds() + (timeout);
while (serial.BytesToRead() < rawBuffer.Length - 1)
{
if (DateTimeOffset.Now.ToUnixTimeMilliseconds() > timeout_limit)
{
//if even no data response no puck error..
if (serial.BytesToRead() <= response_offest)
{
throw new IOException();
}
else
{
throw new TimeoutException();
}
}
Thread.Sleep(10);
}
serial.Read(rawBuffer, 0, (int)(rawBuffer.Length));
byte[] response = new byte[2];
Array.Copy(rawBuffer, response_offest, response, 0, response.Length);
if (response[0] != 0x06)
{
throw new LexiWriteException(response);
}
}
public void Write(ISerial serial, UInt32 addres, byte[] data, int timeout)
{
/*
* +------------+----------+----------------------------------------------------------+
* | Byte Index | Field | Notes |
* +------------+----------+----------------------------------------------------------+
* | 0 | Header | This field is always 0x25 |
* | 1 | Command | 0x81, 0x83, 0x85, 0x87 as detailed in section 4.2 above |
* | 2 | Address | Address of first byte to write |
* | 3 | Size | Number of bytes to write |
* | 4 | Checksum | 2’s complement of sum: header + command + address + data |
* | 5..4+N | Data | N = number of bytes specified in Data/Size field above |
* | 6+N..7+N | CRC | See section 7.2 |
* +------------+----------+----------------------------------------------------------+
*
* Command
* -------
* block 0 addres >= 0 & < 256 = 0x81 => 129
* block 1: addres >= 256 & < 512 = 0x83 => 131
* block 2:addres >= 512 & < 768 = 0x85 => 133
* block 3:addres >= 768 = 0x87 => 135
*/
uint write_comand = (uint)(129 + ((addres / 256) * 2));
/* Address
* -------
* addres then become offset from 256 block
* Example: Addres 600 --> block 2 --> offset 600 - 512 = 88;
*/
uint start_addres = (uint)(addres - ((addres / 256) * 256));
byte[] payload = new byte[] {
0x25, // header
(byte)write_comand,
(byte)start_addres,
(byte)data.Length
};
//Addes checksum to payload
byte[] header = checkSum(payload);
byte[] stream = new byte[0];
Array.Resize(ref stream, (int)(header.Length + data.Length));
Array.Copy(header, 0, stream, 0, header.Length);
Array.Copy(data, 0, stream, header.Length, data.Length);
byte[] crc_bytes = BitConverter.GetBytes(calcCRC(data, data.Length));
Array.Resize(ref stream, (int)(header.Length + data.Length + 2));
stream[stream.Length - 1] = crc_bytes[1];
stream[stream.Length - 2] = crc_bytes[0];
serial.Write(stream, 0, stream.Length);
byte[] rawBuffer = new byte[2];
int response_offest = 0;
if (serial.isEcho())
{
response_offest = stream.Length;
}
Array.Resize(ref rawBuffer, (int)(response_offest + 2));
long timeout_limit = DateTimeOffset.Now.ToUnixTimeMilliseconds() + (timeout);
while (serial.BytesToRead() < rawBuffer.Length - 1)
{
if (DateTimeOffset.Now.ToUnixTimeMilliseconds() > timeout_limit)
{
if (serial.BytesToRead() <= response_offest)
{
throw new IOException();
}
else
{
throw new TimeoutException();
}
}
Thread.Sleep(10);
}
serial.Read(rawBuffer, 0, (int)(rawBuffer.Length));
byte[] response = new byte[2];
Array.Copy(rawBuffer, response_offest, response, 0, response.Length);
if (response[0] != 0x06)
{
throw new LexiWriteException(response);
}
}
/// <summary>
/// Request to read bytes from memory map
/// </summary>
/// <param name="serial">A double precision number.</param>
/// <param name="addres">A double precision number.</param>
/// <param name="data">A double precision number.</param>
/// <param name="timeut">A double precision number.</param>
/// <returns>
/// Memory Map values from read address request
/// </returns>
/// <example>
/// <code>
/// lx.Read(new USBSerial("COM5"), 0, 1, 400)
/// </code>
/// </example>
/// <exception cref="System.TimeoutException">Thrown response Timeout is reached </exception>
/// <exception cref="System.IO.InvalidDataException">Thrown when response data or CRC is not valid </exception>
/// See <see cref="Read(UInt32 addres, uint data)"/> to add doubles.
/// <seealso cref="Write(byte addres, byte[] data)"/>
/// <seealso cref="Write(ISerial serial, UInt32 addres, byte[] data, int timeout)"/>
public byte[] Read(ISerial serial, UInt32 addres, uint data, int timeout)
{
/* +------------+----------+----------------------------------------------------------+
* | Byte Index | Field | Notes |
* +------------+----------+----------------------------------------------------------+
* | 0 | Header | This field is always 0x25 |
* | 1 | Command | 0x80, 0x82, 0x84, 0x86 as detailed in section 4.2 above |
* | 2 | Address | Address of first byte to read |
* | 3 | Size | Number of bytes to read |
* | 4 | Checksum | 2’s complement of sum: header + command + address + data |
* +------------+----------+----------------------------------------------------------+
*
* Command
* -------
* block 0 addres >= 0 & < 256 = 0x80 => 128
* block 1: addres >= 256 & < 512 = 0x82 => 130
* block 2:addres >= 512 & < 768 = 0x84 => 132
* block 3:addres >= 768 = 0x86 => 134
*/
uint read_comand = (uint)(128 + ((addres / 256) * 2));
/* Address
* -------
* addres then become offset from 256 block
* Example: Addres 600 --> block 2 --> offset 600 - 512 = 88;
*/
uint start_addres = (uint)(addres - ((addres / 256) * 256));
//generate payload woth header, command, addres and data
byte[] payload = new byte[] {
0x25, // header
(byte)read_comand,
(byte)start_addres,
(byte)data
};
//Addes checksum to payload
byte[] stream = checkSum(payload);
//Send Lexi Read command thought "serial port"
serial.Write(stream, 0, stream.Length);
//define response buffer size
byte[] rawBuffer = new byte[2];
int response_offest = 0;
if (serial.isEcho())
{
response_offest = stream.Length;
}
Array.Resize(ref rawBuffer, (int)(rawBuffer.Length + data + response_offest));
// whait till the response buffer data is available or timeout limit is reached
long timeout_limit = DateTimeOffset.Now.ToUnixTimeMilliseconds() + (timeout);
while (checkResponseOk(serial, rawBuffer))
{
if (DateTimeOffset.Now.ToUnixTimeMilliseconds() > timeout_limit)
{
if (serial.BytesToRead() <= response_offest)
{
throw new IOException();
}
else
{
throw new TimeoutException();
}
}
//Thread.Sleep(100);
// await Task.Delay(100);
}
//read the response buffer
serial.Read(rawBuffer, 0, (int)(rawBuffer.Length));
/*
* +------------+-------+---------------+--------------------------------------------------------+
* | Byte Index | Field | Value(s) | Notes |
* +------------+-------+---------------+--------------------------------------------------------+
* | 0..N-1 | Data | Read from RAM | N = number of bytes specified in Data field of Request |
* | N..N+1 | CRC | Calculated | CRC over all data bytes. See section 7.2 |
* +------------+-------+---------------+--------------------------------------------------------+
*
*/
//Get response body from RAW response (clean echo response)
byte[] response = new byte[2];
Array.Resize(ref response, (int)(response.Length + data));
Array.Copy(rawBuffer, response_offest, response, 0, response.Length);
//Validare CRC ane get Response BUDY
return(validateReadResponse(response, data));
}
public async Task Write(ISerial serial, UInt32 addres, byte[] data, int timeout)
{
int TEST = new Random().Next(0, 999);
Utils.PrintDeep(Environment.NewLine + "-------LEXI_WRITE--------| " + TEST + " |--");
Utils.PrintDeep("Lexi.Write = Write + UpdateBuffer + ReadBuffer");
/*
* +------------+----------+----------------------------------------------------------+
* | Byte Index | Field | Notes |
* +------------+----------+----------------------------------------------------------+
* | 0 | Header | This field is always 0x25 |
* | 1 | Command | 0x81, 0x83, 0x85, 0x87 as detailed in section 4.2 above |
* | 2 | Address | Address of first byte to write |
* | 3 | Size | Number of bytes to write |
* | 4 | Checksum | 2’s complement of sum: header + command + address + data |
* | 5..4+N | Data | N = number of bytes specified in Data/Size field above |
* | 6+N..7+N | CRC | See section 7.2 |
* +------------+----------+----------------------------------------------------------+
*
* Command
* -------
* block 0 addres >= 0 & < 256 = 0x81 => 129
* block 1: addres >= 256 & < 512 = 0x83 => 131
* block 2:addres >= 512 & < 768 = 0x85 => 133
* block 3:addres >= 768 = 0x87 => 135
*/
try
{
uint write_comand = (uint)(129 + ((addres / 256) * 2));
/* Address
* -------
* addres then become offset from 256 block
* Example: Addres 600 --> block 2 --> offset 600 - 512 = 88;
*/
uint start_addres = (uint)(addres - ((addres / 256) * 256));
// Data frame { 25 | WriteCmd | Address | BytesToWrite | Checksum }.Length = 5
byte[] payload = new byte[] {
0x25, // header
(byte)write_comand,
(byte)start_addres,
(byte)data.Length
};
// Adds checksum to payload
byte[] header = checkSum(payload);
byte[] crc = BitConverter.GetBytes(calcCRC(data, data.Length));
// Concatenate header, data to write and calculated CRC
byte[] stream = new byte[0];
Array.Resize(ref stream, header.Length + data.Length + 2 /*CRC*/);
Array.Copy(header, 0, stream, 0, header.Length);
Array.Copy(data, 0, stream, header.Length, data.Length);
stream[stream.Length - 1] = crc[1];
stream[stream.Length - 2] = crc[0];
Utils.PrintDeep("Lexi.Write.. " +
"Stream = Header [ " +
"0x25 + " +
"WriteCmd 0x" + ( byte )write_comand + " ( " + write_comand + " ) + " +
"Address 0x" + ( byte )start_addres + " ( " + start_addres + " ) + " +
"NumBytesToWrite 0x" + ( byte )data.Length + " ( " + data.Length + " ) + " +
"Checksum 0x" + ( byte )header [header.Length - 1] + " ( " + header [header.Length - 1] + " ) + " +
"Data [ " + Utils.ByteArrayToString(data) + " ] + " +
"CRC [ " + Utils.ByteArrayToString(crc.Take(2).ToArray()) + " ]");
Utils.PrintDeep("Lexi.Write.. " + Utils.ByteArrayToString(stream).Trim() + " [ Length " + stream.Length + " ]");
// Send Lexi Write command
// Stream length is always "5" = 25 + WriteCmd + Address + BytesToWrite + Checksum
await serial.Write(stream, 0, stream.Length);
Utils.PrintDeep("------BUFFER_START-------");
//define response buffer size
byte[] rawBuffer = new byte[0];
int responseOffset = (serial.isEcho()) ? stream.Length : 0;
Array.Resize(ref rawBuffer, responseOffset + 2); // CRC that will be recovered
Utils.PrintDeep("Lexi.Write.. " +
"Echo " + serial.isEcho().ToString().ToUpper() +
" | StreamFromMTU = Header x" + header.Length + " + Data x" + data.Length + " + CRC x2 + MTU.CRC x2 = " + rawBuffer.Length + " bytes");
// Whait untill the response buffer data is available or timeout limit is reached
int bytesToRead = 0;
long timeout_limit = DateTimeOffset.Now.ToUnixTimeMilliseconds() + timeout;
await Task.Run(() =>
{
while ((bytesToRead = serial.BytesToRead()) < rawBuffer.Length - 1)
{
Utils.PrintDeep("Lexi.Write.. BytesToRead: " + bytesToRead + "/" + rawBuffer.Length + " [ " + DateTimeOffset.Now.ToUnixTimeMilliseconds() + " > " + timeout_limit + " ]");
if (DateTimeOffset.Now.ToUnixTimeMilliseconds() > timeout_limit)
{
int num = serial.BytesToRead();
if (num <= responseOffset)
{
Utils.PrintDeep("Lexi.Write -> CheckResponseOk IOException");
throw new IOException();
}
else
{
Utils.PrintDeep("Lexi.Write -> CheckResponseOk TimeoutException");
throw new TimeoutException();
}
}
Thread.Sleep(10);
}
});
Utils.PrintDeep("Lexi.Read.. BytesRead: " + bytesToRead + " / " + (rawBuffer.Length - 1));
Utils.PrintDeep("------BUFFER_FINISH------");
serial.Read(rawBuffer, 0, rawBuffer.Length);
byte[] response = new byte[2];
Array.Copy(rawBuffer, responseOffset, response, 0, response.Length);
Utils.PrintDeep("Lexi.Write.." +
" RawBuffer " + Utils.ByteArrayToString(rawBuffer) +
" | ACK " + Utils.ByteArrayToString(response));
// If first byte of the recovered CRC is 6, everything has gone OK
if (response[0] != 0x06)
{
//throw new LexiWriteException(response);
}
}
catch (Exception e)
{
throw new LexiWritingException();
}
finally
{
Utils.PrintDeep("----LEXI_WRITE_FINISH----| " + TEST + " |--" + Environment.NewLine);
}
}
/// <summary>
/// Request to read bytes from memory map
/// </summary>
/// <param name="serial">A double precision number.</param>
/// <param name="addres">A double precision number.</param>
/// <param name="bytesToRead">A double precision number.</param>
/// <param name="timeut">A double precision number.</param>
/// <returns>
/// Memory Map values from read address request
/// </returns>
/// <example>
/// <code>
/// lx.Read(new USBSerial("COM5"), 0, 1, 400)
/// </code>
/// </example>
/// <exception cref="System.TimeoutException">Thrown response Timeout is reached </exception>
/// <exception cref="System.IO.InvalidDataException">Thrown when response data or CRC is not valid </exception>
/// See <see cref="Read(UInt32 addres, uint data)"/> to add doubles.
/// <seealso cref="Write(byte addres, byte[] data)"/>
/// <seealso cref="Write(ISerial serial, UInt32 addres, byte[] data, int timeout)"/>
public async Task <byte[]> Read(ISerial serial, UInt32 addres, uint bytesToRead, int timeout)
{
int TEST = new Random().Next(0, 999);
Utils.PrintDeep(Environment.NewLine + "--------LEXI_READ-------| " + TEST + " |--");
Utils.PrintDeep("Lexi.Read = Write + UpdateBuffer + Read");
/* +------------+----------+----------------------------------------------------------+
* | Byte Index | Field | Notes |
* +------------+----------+----------------------------------------------------------+
* | 0 | Header | This field is always 0x25 |
* | 1 | Command | 0x80, 0x82, 0x84, 0x86 as detailed in section 4.2 above |
* | 2 | Address | Address of first byte to read |
* | 3 | Size | Number of bytes to read |
* | 4 | Checksum | 2’s complement of sum: header + command + address + data |
* +------------+----------+----------------------------------------------------------+
*
* Command
* -------
* block 0 addres >= 0 & < 256 = 0x80 => 128
* block 1: addres >= 256 & < 512 = 0x82 => 130
* block 2:addres >= 512 & < 768 = 0x84 => 132
* block 3:addres >= 768 = 0x86 => 134
*/
try
{
uint read_comand = (uint)(128 + ((addres / 256) * 2));
/* Address
* -------
* addres then become offset from 256 block
* Example: Addres 600 --> block 2 --> offset 600 - 512 = 88;
*/
uint start_addres = (uint)(addres - ((addres / 256) * 256));
// Data frame { 25 | ReadCmd | Address | BytesToRead | CheckSum }.Length = 5
byte[] payload = new byte[] {
0x25,
(byte)read_comand,
(byte)start_addres,
(byte)bytesToRead
};
// Adds checksum to payload
byte[] stream = checkSum(payload);
Utils.PrintDeep("Lexi.Read -> Write.." +
" Address " + start_addres +
" | ReadCmd " + read_comand +
" | BytesToRead " + bytesToRead +
" | TimeOut " + timeout +
" | Stream " + Utils.ByteArrayToString(stream) +
" [ " + stream.Length + " ]");
// Send Lexi Read command
// Stream length is always "5" = 25 + ReadCmd + Address + BytesToRead + Checksum
await serial.Write(stream, 0, stream.Length);
Utils.PrintDeep("------BUFFER_START-------");
//define response buffer size
byte[] rawBuffer = new byte[0];
int headerOffset = (serial.isEcho()) ? stream.Length : 0;
Array.Resize(ref rawBuffer, headerOffset + ( int )bytesToRead + 2); // Header + Data + CRC
Utils.PrintDeep("Lexi.Read -> Array.Resize.." +
" Echo " + serial.isEcho() +
" [ " + rawBuffer.Length + " = " + bytesToRead + " + Header " + headerOffset + " + CRC 2 ]");
// Whait untill the response buffer data is available or timeout limit is reached
long timeout_limit = DateTimeOffset.Now.ToUnixTimeMilliseconds() + (timeout);
await Task.Run(() =>
{
while (checkResponseOk(serial, rawBuffer))
{
if (DateTimeOffset.Now.ToUnixTimeMilliseconds() > timeout_limit)
{
int num = serial.BytesToRead();
Utils.PrintDeep("Lexi.Read -> BytesToRead: " + num);
if (num <= headerOffset)
{
Utils.PrintDeep("Lexi.Read -> CheckResponseOk IOException");
throw new IOException();
}
else
{
Utils.PrintDeep("Lexi.Read -> CheckResponseOk TimeoutException");
throw new TimeoutException();
}
}
Thread.Sleep(10);
}
});
Utils.PrintDeep("------BUFFER_FINISH------");
//read the response buffer
serial.Read(rawBuffer, 0, rawBuffer.Length);
/*
* +------------+-------+---------------+--------------------------------------------------------+
* | Byte Index | Field | Value(s) | Notes |
* +------------+-------+---------------+--------------------------------------------------------+
* | 0..N-1 | Data | Read from RAM | N = number of bytes specified in Data field of Request |
* | N..N+1 | CRC | Calculated | CRC over all data bytes. See section 7.2 |
* +------------+-------+---------------+--------------------------------------------------------+
*
*/
// Removes header
byte[] response = new byte[2];
Array.Resize(ref response, response.Length + ( int )bytesToRead);
Array.Copy(rawBuffer, headerOffset, response, 0, response.Length);
Utils.PrintDeep("Lexi.Read ->" +
" CheckCRC " + Utils.ByteArrayToString(response) +
" [ " + response.Length + " = BytesToRead " + bytesToRead + " + CRC 2 ]");
// Validates CRC and if everything is ok, returns recovered data
return(validateReadResponse(response, bytesToRead));
}
catch (Exception e)
{
throw new LexiReadingException();
}
finally
{
Utils.PrintDeep("----LEXI_READ_FINISH----| " + TEST + " |--" + Environment.NewLine);
}
}
/// <summary>
/// Request to read bytes from memory map
/// </summary>
/// <param name="serial">A double precision number.</param>
/// <param name="addres">A double precision number.</param>
/// <param name="bytesToRead">A double precision number.</param>
/// <param name="timeut">A double precision number.</param>
/// <returns>
/// Memory Map values from read address request
/// </returns>
/// <example>
/// <code>
/// lx.Read(new USBSerial("COM5"), 0, 1, 400)
/// </code>
/// </example>
/// <exception cref="System.TimeoutException">Thrown response Timeout is reached </exception>
/// <exception cref="System.IO.InvalidDataException">Thrown when response data or CRC is not valid </exception>
/// See <see cref="Read(UInt32 addres, uint data)"/> to add doubles.
/// <seealso cref="Write(byte addres, byte[] data)"/>
/// <seealso cref="Write(ISerial serial, UInt32 addres, byte[] data, int timeout)"/>
private async Task <byte[]> Read(ISerial serial, UInt32 address, uint bytesToRead, int timeout)
{
int TEST = new Random().Next(0, 999);
Utils.PrintDeep(Environment.NewLine + "--------LEXI_READ-------| " + TEST + " |--");
Utils.PrintDeep("Lexi.Read = Write + UpdateBuffer + Read");
try
{
byte[] stream;
var info = GeneratePackage(LexiAction.Read, out stream, address, null, bytesToRead);
Utils.PrintDeep("Lexi.Read.. " +
"Stream = " +
"0x" + info.header + " ( " + Convert.ToInt32(info.header, 16) + " ) + " +
"WriteCmd 0x" + info.cmd + " ( " + Convert.ToInt32(info.cmd, 16) + " ) + " +
"Address 0x" + info.startAddress + " ( " + Convert.ToInt32(info.startAddress, 16) + " ) + " +
"Checksum 0x" + info.checksum + " ( " + Convert.ToInt32(info.checksum, 16) + " )");
Utils.PrintDeep("Lexi.Read.. " + Utils.ByteArrayToString(stream).Trim() + " [ Length " + stream.Length + " ]");
// Send Lexi Read command
await serial.Write(stream, 0, stream.Length);
Utils.PrintDeep("------BUFFER_START-------");
//define response buffer size
byte[] rawBuffer = new byte[0];
int headerOffset = (serial.isEcho()) ? stream.Length : 0;
Array.Resize(ref rawBuffer, headerOffset + ( int )bytesToRead + 2); // Package + Data + ACK
Utils.PrintDeep("Lexi.Read -> Array.Resize.." +
" Echo " + serial.isEcho() +
" [ " + rawBuffer.Length + " = " + bytesToRead + " + Header " + headerOffset + " + CRC 2 ]");
// Whait untill the response buffer data is available or timeout limit is reached
long timeout_limit = DateTimeOffset.Now.ToUnixTimeMilliseconds() + (timeout);
await Task.Run(() =>
{
while (checkResponseOk(serial, rawBuffer))
{
if (DateTimeOffset.Now.ToUnixTimeMilliseconds() > timeout_limit)
{
int num = serial.BytesReadCount();
Utils.PrintDeep("Lexi.Read -> BytesToRead: " + num);
if (num <= headerOffset)
{
Utils.PrintDeep("Lexi.Read -> CheckResponseOk IOException");
throw new IOException();
}
else
{
Utils.PrintDeep("Lexi.Read -> CheckResponseOk TimeoutException");
throw new TimeoutException();
}
}
Thread.Sleep(10);
}
});
Utils.PrintDeep("------BUFFER_FINISH------");
//read the response buffer
serial.Read(rawBuffer, 0, rawBuffer.Length);
/*
* +------------+-------+---------------+--------------------------------------------------------+
* | Byte Index | Field | Value(s) | Notes |
* +------------+-------+---------------+--------------------------------------------------------+
* | 0..N-1 | Data | Read from RAM | N = number of bytes specified in Data field of Request |
* | N..N+1 | CRC | Calculated | CRC over all data bytes. See section 7.2 |
* +------------+-------+---------------+--------------------------------------------------------+
*/
// Removes header and get only the ACK
byte[] response = new byte[2];
Array.Resize(ref response, response.Length + ( int )bytesToRead);
Array.Copy(rawBuffer, headerOffset, response, 0, response.Length);
Utils.PrintDeep("Lexi.Read ->" +
" CheckCRC " + Utils.ByteArrayToString(response) +
" [ " + response.Length + " = BytesToRead " + bytesToRead + " + ACK 2 ]");
// Validates CRC and if everything is ok, returns recovered data
return(validateReadResponse(response, bytesToRead));
}
catch (Exception e)
{
throw new LexiReadingException();
}
finally
{
Utils.PrintDeep("----LEXI_READ_FINISH----| " + TEST + " |--" + Environment.NewLine);
}
}