Python machine.disable_irq() Examples

def _callback(self, pin):
        irq_state = machine.disable_irq()

        while True:
            self._register[0] <<= 1
            self._register[0] |= pin.value()

            #print("{:08b}".format(self._register[0]))
            # All bits set, button has been released for 8 loops
            if self._register[0] is 0b11111111:
                self._current_state = False
                break

            # All bits unset, button has been pressed for 8 loops
            if self._register[0] is 0b00000000:
                self._current_state = True
                break

        # Handle edge case of two consequent rising interrupts
        if self._current_state is not self._previous_state:
            self._previous_state = self._current_state
            self._user_callback(self._pin, self._current_state)

        machine.enable_irq(irq_state) 

def get_t_split(self):
        state = machine.disable_irq()
        t = self.t_ms
        acquired = self.acquired
        machine.enable_irq(state)
        isecs, ims = divmod(t, 1000)  # Get integer secs and ms
        x, secs = divmod(isecs, 60)
        hrs, mins = divmod(x, 60)
        dt = utime.ticks_diff(utime.ticks_us(), acquired)  # μs to time now
        ds, us = divmod(dt, 1000000)
        # If dt > 1e6 can add to secs without risk of rollover: see above.
        self._time[0] = hrs
        self._time[1] = mins
        self._time[2] = secs + ds
        self._time[3] = us + ims*1000
        return self._time 

def get_t_split(self):
        state = machine.disable_irq()
        t = self.t_ms
        acquired = self.acquired
        machine.enable_irq(state)
        isecs, ims = divmod(t, 1000)  # Get integer secs and ms
        x, secs = divmod(isecs, 60)
        hrs, mins = divmod(x, 60)
        dt = utime.ticks_diff(utime.ticks_us(), acquired)  # μs to time now
        ds, us = divmod(dt, 1000000)
        # If dt > 1e6 can add to secs without risk of rollover: see above.
        self._time[0] = hrs
        self._time[1] = mins
        self._time[2] = secs + ds
        self._time[3] = us + ims*1000
        return self._time 

def power_down(self):
        """When PD_SCK pin changes from low to high and stays at
        high for longer than 60µs, HX711 enters power down mode.


        """
        log.info('HX711 power down')
        state = disable_irq()
        self.pSCK.value(False)
        self.pSCK.value(True)
        utime.sleep_us(80)
        enable_irq(state)

        # Hold level to HIGH, even during deep sleep.
        # https://community.hiveeyes.org/t/strom-sparen-beim-einsatz-der-micropython-firmware-im-batteriebetrieb/2055/72
        if self.platform_info.vendor == self.platform_info.MICROPYTHON.Pycom:
            self.pSCK.hold(True) 

def disable_irq(self, **kwargs):
        """
        Disable interrupt requests.

        :param kwargs: Parameters to pass to :meth:`platypush.plugins.esp.EspPlugin.execute`.
        """
        code = '''
import machine
machine.disable_irq()
'''
        return self.execute(code, **kwargs).output 

def acquire_out_buffer(self):
        while self.out_buffer_lock == True:
            time.sleep_ms(1)  # Wait for release
        self.irqstate = machine.disable_irq()
        if self.out_buffer_lock == True:  # TODO: check if this locking is enough
            machine.enable_irq(self.irqstate)
            return False
        self.out_buffer_lock = True
        return True 

def get_ms(self):
        state = machine.disable_irq()
        t = self.t_ms
        acquired = self.acquired
        machine.enable_irq(state)
        return t + utime.ticks_diff(utime.ticks_us(), acquired) // 1000

    # Return accurate GPS time of day (hrs: int, mins: int, secs: int, μs: int)
    # The ISR can skip an update of .secs if a day rollover would occur. Next
    # RMC handles this, so if updates are at 1s intervals the subsequent ISR
    # will see hms = 0, 0, 1 and a value of .acquired > 1000000.
    # Even at the slowest update rate of 10s this can't overflow into minutes. 

def get_ms(self):
        state = machine.disable_irq()
        t = self.t_ms
        acquired = self.acquired
        machine.enable_irq(state)
        return t + utime.ticks_diff(utime.ticks_us(), acquired) // 1000

    # Return accurate GPS time of day (hrs: int, mins: int, secs: int, μs: int)
    # The ISR can skip an update of .secs if a day rollover would occur. Next
    # RMC handles this, so if updates are at 1s intervals the subsequent ISR
    # will see hms = 0, 0, 1 and a value of .acquired > 1000000.
    # Even at the slowest update rate of 10s this can't overflow into minutes. 

def monkeypatch_machine():

    from mock import Mock

    import uuid
    import machine

    # Some primitives.
    machine.enable_irq = Mock()
    machine.disable_irq = Mock()
    machine.unique_id = lambda: str(uuid.uuid4().fields[-1])[:5].encode()
    machine.freq = Mock(return_value=42000000)
    machine.idle = Mock()

    # Reset cause and wake reason.
    machine.PWRON_RESET = 0
    machine.HARD_RESET = 1
    machine.WDT_RESET = 2
    machine.DEEPSLEEP_RESET = 3
    machine.SOFT_RESET = 4
    machine.BROWN_OUT_RESET = 5

    machine.PWRON_WAKE = 0
    machine.GPIO_WAKE = 1
    machine.RTC_WAKE = 2
    machine.ULP_WAKE = 3

    machine.reset_cause = Mock(return_value=0)
    machine.wake_reason = wake_reason 

def read(self):
        """This chip has a non-standard serial protocol.
        
        Serial Interface
        ----------------
        Pin PD_SCK and DOUT are used for data retrieval, input selection,
        gain selection and power down controls.
        
        When output data is not ready for retrieval, digital output pin DOUT
        is high. Serial clock input PD_SCK should be low. When DOUT goes to
        low, it indicates data is ready for retrieval.
        
        By applying 25~27 positive clock pulses at the PD_SCK pin, data is
        shifted out from the DOUT output pin. Each PD_SCK pulse shifts out
        one bit, starting with the MSB bit first, until all 24 bits are
        shifted out. The 25th pulse at PD_SCK input will pull DOUT pin back
        to high.


        """

        # Initialize the hardware once.
        # Otherwise, croak with ``DeviceNotFound('HX711 not available')``.
        if not self.initialize():

            # Wait for the device becoming ready.
            self.wait_ready()

        # Shift in data, gain & channel info.
        result = 0
        for j in range(24 + self.GAIN):
            state = disable_irq()
            self.pSCK(True)
            self.pSCK(False)
            enable_irq(state)
            result = (result << 1) | self.pOUT()

        # Shift back the extra bits.
        result >>= self.GAIN

        # Check sign.
        if result > 0x7fffff:
            result -= 0x1000000

        return result