MicroPython GSM Module Baudrate Fixed

baudrateFixed.py

from machine import UART, Pin
import time


class GSM:
    def __init__(self, regulator, power, baudrate=115200):
        self._regulator = Pin(regulator, mode=Pin.OUT, value=False)
        self._power = Pin(power, mode=Pin.OUT, value=False)
        self._baudrate = baudrate

        self._uartWizard: callable = None
        self._uart = None

    def restart(self):
        self._regulator.off()
        self._power.off()
        time.sleep_ms(100)

        self._regulator.on()
        self._power.on()
        time.sleep_ms(100)
        self._power.off()
        time.sleep_ms(50)
        self._power.on()

    def setUARTWizard(self, callback: callable):
        self._uartWizard = callback

    def getUART(self):
        if not self._uart:
            self.setUART(self._baudrate)

        return self._uart

    def setUART(self, baudrate: int):
        self._baudrate = baudrate
        self._uart = self._uartWizard(baudrate)

    def baudrateFixed(self, baudrate: int):
        self.restart()

        while True:
            if self.getUART().any():
                print(data := self.getUART().read())
                if data == b'\r\n+CPIN: SIM REMOVED\r\n':
                    print('AT Ready')
                    break

        self.getUART().write('AT+IPREX=' + str(baudrate) + '\r\n')
        self.getUART().flush()

        while True:
            if self.getUART().any():
                print(data := self.getUART().read())
                if data == b'\r\nOK\r\n':
                    print('Baudrate set')
                    break

        self.restart()
        self.setUART(baudrate)

        while True:
            if self.getUART().any():
                print(data := self.getUART().read())
                if data == b'\r\n+CPIN: SIM REMOVED\r\n':
                    print('AT Ready')
                    break

regulatorPin=7
powerPin=8
uartID = 1
uartRX = 5
uartTX = 6

gsm = GSM(regulatorPin, powerPin, 115200)
gsm.setUARTWizard(lambda baudrate: UART(uartID, baudrate=baudrate, rx=uartRX, tx=uartTX))
gsm.baudrateFixed(460800)