Trying old stuff w/ EOL equipment

def WriteByte(Reg,Value):
    data = [0 for i in range(2)]
    data[0] = Reg
    data[1] = Value
    MotorBridge.write_i2c_block_data(0x4b, 1, data)

def WriteHalfWord(Reg,Value):
    data = [0 for i in range(3)]
    data[0] = Reg
    data[1] = Value & 0xff
    data[2] = (Value>>8) & 0xff
    MotorBridge.write_i2c_block_data(0x4b, 1, data)

def WriteOneWord(Reg,Value):
    data = [0 for i in range(5)]
    data[0] = Reg
    data[1] = Value & 0xff
    data[2] = (Value>>8) & 0xff
    data[3] = (Value>>16) & 0xff
    data[4] = (Value>>24) & 0xff
    MotorBridge.write_i2c_block_data(0x4b, 1, data)

def SetDefault():
    WriteOneWord(CONFIG_VALID,0x00000000)

class MotorBridgeCape:
    def __init__(self):
        reset_pin.write_text('high')
        time.sleep(1)

    # init stepper motor A
    def StepperMotorAInit(self):
        WriteByte(TB_1A_MODE,TB_SPM) #Stepper
        time.sleep(DelayTime)
        WriteHalfWord(TB_1A_DUTY,1000)    # voltage
        time.sleep(DelayTime)

    # MoveSteps > 0 CW
    # MoveSteps < 0 CCW
    # StepDelayTime : delay time for every step. uint us
    def StepperMotorAMove(self,MoveSteps,StepDelayTime):
        if MoveSteps > 0:
            WriteByte(TB_1A_DIR,TB_CW)   #CW
        else:
            WriteByte(TB_1A_DIR,TB_CCW)   #CW
            MoveSteps = -MoveSteps
        time.sleep(DelayTime)
        WriteOneWord(TB_1A_SPM_SPEED,StepDelayTime)  # unit us
        time.sleep(DelayTime)
        WriteOneWord(TB_1A_SPM_STEP,MoveSteps)
        time.sleep(DelayTime)


    # init stepper motor B
    def StepperMotorBInit(self):
        WriteByte(TB_2A_MODE,TB_SPM) #Stepper
        time.sleep(DelayTime)
        WriteHalfWord(TB_2A_DUTY,1000)    # voltage
        time.sleep(DelayTime)

    # MoveSteps > 0 CW
    # MoveSteps < 0 CCW
    # StepDelayTime : delay time for every step. uint us
    def StepperMotorBMove(self,MoveSteps,StepDelayTime):
        if MoveSteps > 0:
            WriteByte(TB_2A_DIR,TB_CW)   #CW
        else:
            WriteByte(TB_2A_DIR,TB_CCW)   #CW
            MoveSteps = -MoveSteps
        time.sleep(DelayTime)
        WriteOneWord(TB_2A_SPM_SPEED,StepDelayTime)  # unit us
        time.sleep(DelayTime)
        WriteOneWord(TB_2A_SPM_STEP,MoveSteps)
        time.sleep(DelayTime)

    # Init DC Motor
    def DCMotorInit(self,MotorName,Frequency):
    # Init the DC Frequency
        WriteOneWord(CONFIG_TB_PWM_FREQ,Frequency)
        time.sleep(DelayTime)

from smbus2 import SMBus
import time
import pathlib

# reset pin is P9.23, i.e. gpio1.17
reset_pin = pathlib.Path('/sys/class/gpio/gpio49/direction')
reset_pin.write_text('low')

MotorBridge = SMBus('/dev/i2c-2')

ReadMode  = 0
WriteMode = 1
DeAddr    = 0X4B
ConfigValid = 0x3a6fb67c
DelayTime = 0.005