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Fix missing STX (0x02) DLE-escape in transmit() #19

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Fix missing STX (0x02) DLE-escape in transmit() #19

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7 changes: 3 additions & 4 deletions CMRI.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -147,10 +147,9 @@ void CMRI::transmit()
_serial.write(GET);
for (int i=0; i<_tx_length; i++)
{
if (_tx_buffer[i] == ETX)
_serial.write(ESC); // escape because this looks like an STX bit (very basic protocol)
if (_tx_buffer[i] == ESC)
_serial.write(ESC); // escape because this looks like an escape bit (very basic protocol)
// DLE-escape STX, ETX and DLE characters
if (_tx_buffer[i] == STX || _tx_buffer[i] == ETX || _tx_buffer[i] == ESC)
_serial.write(ESC);
_serial.write(_tx_buffer[i]);
}
_serial.write(ETX);
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