Check for ports already in use before connecting to serial port #101
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Hi, I would like to a propose a possible solution to the previously posted issue #100. I am excited for contributing to an open source project for the first time. Please forgive me if proposed solution is incorrect.
Summary of issue and solution:
If a user tries to open a port that is already in use, then
serial.serialutil.SerialException
error will occur. To minimize occurrence of this issue, every time aBoard()
object is created, we should check to see if the port was already opened by pyFirmata previously by using a class attribute,_boards_in_use
that keeps track of all serial ports opened by pyFirmata.