GPIO switching - Githubissues

Hello I try to switch GPIO of a Meerstetter TEC 1089 as in the attached file
from pyMeCom.mecom import MeCom, ResponseException, WrongChecksum
from serial import SerialException

# default queries from command table below
DEFAULT_QUERIES = [
    "loop status",
    "object temperature",
    "target object temperature",
    "output current",
    "output voltage"
]
>>
# syntax
# { display_name: [parameter_id, unit], }
COMMAND_TABLE = {
    "loop status": [1200, ""],
    "object temperature": [1000, "degC"],
    "target object temperature": [1010, "degC"],
    "output current": [1020, "A"],
    "output voltage": [1021, "V"],
    "sink temperature": [1001, "degC"],
    "ramp temperature": [1011, "degC"],
    "enable IO function": [52100, ""],
    "set output to Push-Pull" : [52101,""],
    "set IO output state": [52102,""],
    "get IO output state": [52103,""],
    "GPIO function": [6100,""]
}

'''
    {"id": 6101, "name": "GPIO Level Assignment", "format": "INT32"},
    {"id": 6102, "name": "GPIO Hardware Configuration", "format": "INT32"},
    {"id": 6103, "name": "GPIO Channel", "format": "INT32"},
    '''

class MeerstetterTEC(object):
    """
    Controlling TEC devices via serial.
    """

    def _tearDown(self):
        self.session().stop()

    def __init__(self, port="/dev/ttyUSB0", channel=1, queries=DEFAULT_QUERIES, *args, **kwars):
        assert channel in (1, 2)
        self.channel = channel
        self.port = port
        self.queries = queries
        self._session = None
        self._connect()

    def _connect(self):
        # open session
        self._session = MeCom(serialport=self.port)
        # get device address
        self.address = self._session.identify()

    def session(self):
        if self._session is None:
            self._connect()
        return self._session

    def get_data(self):
        data = {}
        for description in self.queries:
            id, unit = COMMAND_TABLE[description]
            try:
                value = self.session().get_parameter(parameter_id=id, address=self.address, parameter_instance=self.channel)
                data.update({description: (value, unit)})
            except (ResponseException, WrongChecksum) as ex:
                self.session().stop()
                self._session = None
        return data

if __name__ == '__main__':

    # initialize controller
    mc = MeerstetterTEC()

    '''

    from "TEC Controller Communication Protocol 5136AM.pdf"

    The pins are addressed by a bit field.
    Example:
    To configure GPIO3 / GPIO4 as output pins, and to set
    GPIO3 to high level and GPIO4 to Low Level, use the
    following commands:

    Set ID 52102 to 4 (Set Bit Number 2 to '1') set IO output state
    Set ID 52101 to 12 (Set Bit Numbers 2 and 3 to '1') set output to Push-Pull"
    Set ID 52100 to 1 (Enable the Function) enable IO function

    Bit Number Output Signal
    0           GPIO1     1
    1           GPIO 2    2
    2           GPIO 3    4
    3           GPIO 4    8
    4           GPIO 5    16
    5           GPIO 6    32

            "enable IO function": [52100, ""],
    "set output to Push-Pull" : [52101,""],
    "set IO output state": [52102,""],
    "get IO output state": [52103,""],
    '''

    #set "set IO output state" to 1 (GPIO1)
    id, unit = COMMAND_TABLE["set IO output state"] #[52102,""],

    print(mc.session().set_parameter(parameter_id=52102, value=1,address=mc.address))

    # set the "set output to Push-Pull" to 1
    id, unit = COMMAND_TABLE["set output to Push-Pull"]
    print(id)
    print(mc.session().set_parameter(parameter_id=id, value=1 ,address=mc.address))

    #"enable IO function"
    id, unit = COMMAND_TABLE["enable IO function"]
    print(id)
    print(mc.session().set_parameter(parameter_id=id, value=1 ,address=mc.address))

    #"get IO output state"
    id, unit = COMMAND_TABLE["get IO output state"]
    print(id)
    print(mc.session().get_parameter(parameter_id=id, address=mc.address))
So watever I change, the "get IO output state" response is zero, and I measure 0 V.
Does I do a mistake ? do you have an idea ?
Thanks
meerstetter / pyMeCom

GPIO switching #20
