DAC63004WCSP-EVM: GUI initialization Error,

from FTDI_SMARTDAC import *

if __name__ == '__main__':
    ftdiObject = FtdiController()
    ftdiObject.getFtdiDeviceInfo()

    # I2C Communication Initialisation
    ftdiObject.initializeI2C(speed=100)  # Valid speed between 60K bps to 3400K bps (100K bps set)

    # Register writes for Programmable Latching comparator
    ftdiObject.i2cWrite(deviceAddress=0x48, regAddr=0xD1, regData=0x0000) # Powering up device output with VDD as reference
    ftdiObject.i2cWrite(deviceAddress=0x48, regAddr=0xD2, regData=0x0800) # Configures the GPI pin as Margin-High, Low trigger
    ftdiObject.i2cWrite(deviceAddress=0x48, regAddr=0x21, regData=0x0998) # Configure Channel 2 with DAC DATA
    ftdiObject.i2cWrite(deviceAddress=0x48, regAddr=0xD3, regData=0x0418) # Enables GPI pin, and NMV write initiated

    # # Register reads to verify register writes
    # time.sleep(3)  #Wait time for NVM write
    # readback = ftdiObject.i2cRead(deviceAddress=0x48, regAddr=0xD1)
    # print("regAddr", hex(0xD1), "regData", readback)
    # readback = ftdiObject.i2cRead(deviceAddress=0x48, regAddr=0xD2)
    # print("regAddr", hex(0xD2), "regData", readback)
    # readback = ftdiObject.i2cRead(deviceAddress=0x48, regAddr=0x21)
    # print("regAddr", hex(0x21), "regData", readback)

    ftdiObject.closeHandle()

"""
User Guide LibFT4222 : http://www.ftdichip.com/Support/Documents/AppNotes/AN_329_User_Guide_for_LibFT4222.pdf
D2XX Programmer's Guide : https://www.ftdichip.com/Support/Documents/ProgramGuides/D2XX_Programmer's_Guide(FT_000071).pdf
python library : https://gitlab.com/msrelectronics/python-ft4222/-/tree/master
"""
#!/bin/env python
import ft4222
import enum
import time


class GpioIOConfig(enum.Enum):
    OUTPUT = ft4222.GPIO.Dir.OUTPUT
    INPUT = ft4222.GPIO.Dir.INPUT


class GpioPortConfig(enum.Enum):
    GPIO2 = ft4222.GPIO.Port.P2
    GPIO3 = ft4222.GPIO.Port.P3


class FtdiController:
    def __init__(self):
        self.availableDevices = []
        self.deviceInstance = None
        self.initializedCommunicationMode = None

    def getFtdiDeviceInfo(self):
        """
        Since DCNF0 & DCMF1 pins of FT4222H are grounded for Hadron EVM, we are in Mode 0 (2 USB Interfaces), Refer Page 6 of User Guide.
        FT4222 A : 1 SPI host, SPI target, I2C host, or I2C target device
        FT4222 B : 1 GPIO device
        """
        self.availableDevices.clear()
        noOfDevices = ft4222.createDeviceInfoList()                 # This function builds a device information list and returns the number of D2XX devices connected to the system. The list contains information about both unopen and open devices.
        if noOfDevices == 0:
            raise Exception('No FTDI Devices detected in the system')
        else:
            for i in range(noOfDevices):
                deviceData = ft4222.getDeviceInfoDetail(i, False)  # Set False to avoid a slow call to createDeviceInfoList.
                print(deviceData)
                self.availableDevices.append(deviceData['description'])
            print('Valid Devices : ', self.availableDevices)

    def closeHandle(self):
        """
        Closes FTDI device handle
        """
        self.deviceInstance.close()

    def dataWriteList(self, number):
        """
        Converts a decimal number into a python list of 8-bit numbers
        255 -> [0, 255]
        288 -> [1, 32]
        :param number: Valid Decimal Number
        :return: List of 8-bit numbers
        """
        strBin = str(bin(number)[2:])
        strBin = '0' * (((len(strBin) + 7) & - 8) - len(strBin)) + strBin

        writeList = []
        for i in range(len(strBin) // 8):
            writeList.append(int(strBin[i * 8: (i + 1) * 8], 2))

        if len(writeList) < 2:   # We need 2 bytes of data for Hadron
            writeList.insert(0, 0)

        return writeList

    def initializeI2C(self, speed):
        """
        FT4222 A : 1 SPI master, SPI target, I2C master, or I2C target device
            :param speed: Valid speed between 60K bps to 3400K bps
        """
        usbInterface = b'FT4222 A'

        if speed < 60 or speed > 3400:
            raise Exception('Valid speed for I2C is between 60K bps to 3400K bps')

        if usbInterface in self.availableDevices:
            self.deviceInstance = ft4222.openByDescription(usbInterface)        # Open a handle to an usb device by description
            self.deviceInstance.i2cMaster_Init(speed)                           # The speed of I2C transmission. It ranges from 60K bps to 3400K bps
            self.initializedCommunicationMode = 'I2C'
        else:
            raise Exception('Cannot initialize I2C Communication, valid device not detected')

    def i2cWrite(self, deviceAddress, regAddr, regData):
        """
        Write using I2C
        :param deviceAddress: int
        :param regAddr: int
        :param regData: int
        """
        if self.initializedCommunicationMode == 'I2C':
            dataArray = bytearray([regAddr] + self.dataWriteList(regData))
            self.deviceInstance.i2cMaster_Write(addr=deviceAddress, data=dataArray)
        else:
            raise Exception('Device not initialized for I2C, run initializeI2C() function to initialize, currently initialized mode : ' + self.initializedCommunicationMode)

    def i2cRead(self, deviceAddress, regAddr):
        """
        Read using I2C
        :param deviceAddress: int
        :param regAddr: int
        :return: readData : str (hex)
        """
        if self.initializedCommunicationMode == 'I2C':
            self.deviceInstance.i2cMaster_Write(addr=deviceAddress, data=regAddr)
            data = self.deviceInstance.i2cMaster_Read(addr=deviceAddress, bytesToRead=2)
            int_val = int.from_bytes(data, 'big')
            return hex(int_val)
        else:
            raise Exception('Device not initialized for I2C, run initializeI2C() function to initialize, currently initialized mode : ' + self.initializedCommunicationMode)

    def initializeGpio(self, gpio2=GpioIOConfig.OUTPUT, gpio3=GpioIOConfig.OUTPUT):
        """
        FT4222 B : 1 GPIO device
        :param gpio2: Use to configure GPIO for input or output, it must be a valid GpioConfig enum
        :param gpio3: Use to configure GPIO for input or output, it must be a valid GpioConfig enum
        """
        usbInterface = b'FT4222 B'

        if usbInterface in self.availableDevices:
            if isinstance(gpio2, GpioIOConfig) and isinstance(gpio3, GpioIOConfig):
                self.deviceInstance = ft4222.openByDescription(usbInterface)        # Open a handle to an usb device by description
                self.deviceInstance.setSuspendOut(False)                            # use GPIO2 as gpio (not suspend out)
                self.deviceInstance.setWakeUpInterrupt(False)                       # # use GPIO3 as gpio (not wakeup)
                self.deviceInstance.gpio_Init(gpio2=gpio2.value, gpio3=gpio3.value)
                self.initializedCommunicationMode = 'GPIO'
            else:
                raise Exception('gpio2 and gpio3 parameters must be of GpioIOConfig enum type')
        else:
            raise Exception('Cannot initialize GPIO, valid device not detected')

    def writeGpio(self, gpioPort, value):
        """
        Write to the GPIO Ports of FTDI, the GPIO's must be initialized for Output
        :param gpioPort: valid GpioPortConfig enum
        :param value: valid bool value
        """
        if self.initializedCommunicationMode == 'GPIO':
            if isinstance(gpioPort, GpioPortConfig):
                if isinstance(value, bool):
                    self.deviceInstance.gpio_Write(gpioPort.value, value)
                else:
                    raise Exception('value parameter must be of bool type')
            else:
                raise Exception('gpioPort parameter must be of GpioPortConfig enum type')
        else:
            raise Exception('Device not initialized for GPIO, run initializeGpio() function to initialize, currently initialized mode : ' + self.initializedCommunicationMode)

    def readGpio(self, gpioPort):
        """
        Read from the GPIO Ports of FTDI, the GPIO's must be initialized for Input
        :param gpioPort: valid GpioPortConfig enum
        """
        if self.initializedCommunicationMode == 'GPIO':
            if isinstance(gpioPort, GpioPortConfig):
                return self.deviceInstance.gpio_Read(gpioPort.value)
            else:
                raise Exception('gpioPort parameter must be of GpioPortConfig enum type')
        else:
            raise Exception('Device not initialized for GPIO, run initializeGpio() function to initialize, currently initialized mode : ' + self.initializedCommunicationMode)