Python pyb.millis() Examples

The following are 11 code examples of pyb.millis(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module pyb , or try the search function .
Example #1
Source File: drumseq.py    From micropython-stm-lib with MIT License 6 votes vote down vote up 
def play(self, pattern, kit=None):
        # channel volume
        self.midiout.control_change(10, self.volume, ch=self.channel)
        self.activate_drumkit(kit)
        # give MIDI instrument some time to load drumkit
        delay(200)

        try:
            while True:
                last_tick = millis()
                pattern.playstep(self.midiout, self.channel)
                timetowait = max(0, self.mpt - (millis() - last_tick))
                if timetowait > 0:
                    delay(int(timetowait))
        finally:
            # all sound off
            self.midiout.control_change(120, 0, ch=self.channel)
Example #2
Source File: pid.py    From flight_controller with GNU General Public License v3.0 6 votes vote down vote up 
def get_pid(self, error, scaler):
    tnow = millis()
    dt = tnow - self._last_t
    output = 0
    if self._last_t == 0 or dt > 1000:
      dt = 0
      self.reset_I()
    self._last_t = tnow
    delta_time = float(dt) / float(1000)
    output += error * self._kp
    if abs(self._kd) > 0 and dt > 0:
      if isnan(self._last_derivative):
        derivative = 0
        self._last_derivative = 0
      else:
        derivative = (error - self._last_error) / delta_time
      derivative = self._last_derivative + \
                   ((delta_time / (self._RC + delta_time)) * \
                    (derivative - self._last_derivative))
      self._last_error = error
      self._last_derivative = derivative
      output += self._kd * derivative
    output *= scaler
    if abs(self._ki) > 0 and dt > 0:
      self._integrator += (error * self._ki) * scaler * delta_time
      if self._integrator < -self._imax: self._integrator = -self._imax
      elif self._integrator > self._imax: self._integrator = self._imax
      output += self._integrator
    return output
Example #3
Source File: Main_perf.py    From uPyIDE with GNU General Public License v3.0 5 votes vote down vote up 
def performanceTest():
	d = 10000
	print("start. Wait for %d milis" % d)
	millis = pyb.millis
	endTime = millis() + d
	count = 0
	while millis() < endTime:
		count += 1
	print("Count: ", count)
Example #4
Source File: pid.py    From OpenMV-Pan-Tilt with MIT License 5 votes vote down vote up 
def get_pid(self, error, scaler):
        tnow = millis()
        dt = tnow - self._last_t
        output = 0
        if self._last_t == 0 or dt > 1000:
            dt = 0
            self.reset_I()
        self._last_t = tnow
        delta_time = float(dt) / float(1000)
        output += error * self._kp
        if abs(self._kd) > 0 and dt > 0:
            if isnan(self._last_derivative):
                derivative = 0
                self._last_derivative = 0
            else:
                derivative = (error - self._last_error) / delta_time
            derivative = self._last_derivative + \
                                     ((delta_time / (self._RC + delta_time)) * \
                                        (derivative - self._last_derivative))
            self._last_error = error
            self._last_derivative = derivative
            output += self._kd * derivative
        output *= scaler
        if abs(self._ki) > 0 and dt > 0:
            self._integrator += (error * self._ki) * scaler * delta_time
            if self._integrator < -self._imax: self._integrator = -self._imax
            elif self._integrator > self._imax: self._integrator = self._imax
            output += self._integrator
        return output
Example #5
Source File: epdpart.py    From micropython-epaper with Apache License 2.0 5 votes vote down vote up 
def frame_data_repeat(self, stage, use_old):
        self.asm_data[0] = addressof(self.image)
        self.asm_data[1] = addressof(self.image_old) if use_old else 0
        start = pyb.millis()
        count = 0
        while True:
            self.frame_data(stage)
            count +=1
            if pyb.elapsed_millis(start) > self.factored_stage_time:
                break
        if self.verbose:
            print('frame_data_repeat count = {}'.format(count))
Example #6
Source File: epdpart.py    From micropython-epaper with Apache License 2.0 5 votes vote down vote up 
def frame_fixed_repeat(self, fixed_value, stage):
        start = pyb.millis()
        count = 0
        while True:
            self.frame_fixed(fixed_value, stage)
            count +=1
            if pyb.elapsed_millis(start) > self.factored_stage_time:
                break
        if self.verbose:
            print('frame_fixed_repeat count = {}'.format(count))
Example #7
Source File: epd.py    From micropython-epaper with Apache License 2.0 5 votes vote down vote up 
def _frame_fixed_timed(self, fixed_value, stage_time):
        t_start = pyb.millis()
        t_elapsed = -1
        while t_elapsed < stage_time: 
            for line in range(LINES_PER_DISPLAY -1, -1, -1): 
                self._line_fixed(line, fixed_value, set_voltage_limit = False)
            t_elapsed = pyb.elapsed_millis(t_start)
Example #8
Source File: elapsed.py    From upy-examples with MIT License 5 votes vote down vote up 
def blink_millis():
    start = pyb.millis()
    led.on()
    while pyb.elapsed_millis(start) < 100:
        pass
    led.off()
    while pyb.elapsed_millis(start) < 200:
        pass
    led.on()
    while pyb.elapsed_millis(start) < 300:
        pass
    led.off()
    while pyb.elapsed_millis(start) < 1000:
        pass
Example #9
Source File: counter_perf.py    From upy-examples with MIT License 5 votes vote down vote up 
def sk():
  count = 0
  millis = pyb.millis
  print('start')
  kon = millis() + 1000
  while millis() < kon:
    count += 1
  print('normal', count)
Example #10
Source File: counter_perf.py    From upy-examples with MIT License 5 votes vote down vote up 
def skn():
  count = 0
  millis = pyb.millis
  print('start')
  kon = millis() + 1000
  while millis() < kon:
    count += 1
  print("native", count)
Example #11
Source File: elapsed.py    From upy-examples with MIT License 5 votes vote down vote up 
def blink_millis():
    start = pyb.millis()
    led.on()
    while pyb.elapsed_millis(start) < 100:
        pass
    led.off()
    while pyb.elapsed_millis(start) < 200:
        pass
    led.on()
    while pyb.elapsed_millis(start) < 300:
        pass
    led.off()
    while pyb.elapsed_millis(start) < 1000:
        pass