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There is board, which can communicate over serial port. It is necessary to send an command to the board. After receiving command, board begins to send data and an processing sketch should draws data.
It is sumply, but I faced with strange problem. If you send command using serial.write( "comand" ) board will receive command and begin to send data, but processing can't read it (serial.available() always equal 0). Whereas if you send command using terminal (like putty) board will send data and processing will perfectly read and plot data.
Is there any idea?