Python RPi.GPIO.LOW Examples

def readUltrasonicSensor():
    GPIO.setup(TRIGGER_PIN, GPIO.OUT)
    GPIO.setup(SENSOR_PIN, GPIO.IN)
    GPIO.output(TRIGGER_PIN, GPIO.LOW)
    time.sleep(0.3)
    GPIO.output(TRIGGER_PIN, True)
    time.sleep(0.00001)
    GPIO.output(TRIGGER_PIN, False)
    while GPIO.input(SENSOR_PIN) == 0:
        signaloff = time.time()
    while GPIO.input(SENSOR_PIN) == 1:
        signalon = time.time()
    timepassed = signalon - signaloff
    distance = timepassed * 17000
    if distance < threshold:
        return 1
    else:
        return 0 

def btn_detect():
	global btn_status
	with MS.MicrophoneStream(RATE, CHUNK) as stream:
		audio_generator = stream.generator()

		for content in audio_generator:
			GPIO.output(31, GPIO.HIGH)
			rc = ktkws.detect(content)
			rms = audioop.rms(content,2)
			#print('audio rms = %d' % (rms))
			GPIO.output(31, GPIO.LOW)
			if (btn_status == True):
				rc = 1
				btn_status = False			
			if (rc == 1):
				GPIO.output(31, GPIO.HIGH)
				MS.play_file("../data/sample_sound.wav")
				return 200 

def detect():
	global button
	with MicrophoneStream(RATE, CHUNK) as stream:
		audio_generator = stream.generator()

		for content in audio_generator:
			#import binascii
			#print ("INBYTE: %s" % (binascii.hexlify(bytearray(content))))
			GPIO.output(31, GPIO.HIGH)
			rc = ktkws.detect(content)
			rms = audioop.rms(content,2)
			#print('audio rms = %d' % (rms))
			GPIO.output(31, GPIO.LOW)
			if (button == True):
				rc = 1
				button = False
			
			if (rc == 1):
				GPIO.output(31, GPIO.HIGH)
				gt2vt.play_file("../data/sample_sound.wav")
				return 200 

def detect():
	global button
	with MicrophoneStream(RATE, CHUNK) as stream:
		audio_generator = stream.generator()

		for content in audio_generator:
			#import binascii
			#print ("INBYTE: %s" % (binascii.hexlify(bytearray(content))))
			GPIO.output(31, GPIO.HIGH)
			rc = ktkws.detect(content)
			rms = audioop.rms(content,2)
			#print('audio rms = %d' % (rms))
			GPIO.output(31, GPIO.LOW)
			if (button == True):
				rc = 1
				button = False
			
			if (rc == 1):
				GPIO.output(31, GPIO.HIGH)
				gt2vt.play_file("../data/sample_sound.wav")
				return 200 

def detect():
	global button
	with MicrophoneStream(RATE, CHUNK) as stream:
		audio_generator = stream.generator()

		for content in audio_generator:
			#import binascii
			#print ("INBYTE: %s" % (binascii.hexlify(bytearray(content))))
			GPIO.output(31, GPIO.HIGH)
			rc = ktkws.detect(content)
			rms = audioop.rms(content,2)
			#print('audio rms = %d' % (rms))
			GPIO.output(31, GPIO.LOW)
			if (button == True):
				rc = 1
				button = False
			
			if (rc == 1):
				GPIO.output(31, GPIO.HIGH)
				gt2vt.play_file("../data/sample_sound.wav")
				return 200 

def __init__(self, pins, real_true = GPIO.HIGH):
        '''
        Init the digital display
        :param pin: pin numbers in array
        :param real_true: GPIO.HIGH or GPIO.LOW
        :return: void
        '''
        self.__pins = pins
        self.__real_true = real_true
        try:
            t1 = Thread(target = self.flush_4bit)
            t1.setDaemon(True)
            t1.start()
        except:
            print("Error: Unable to start thread by DigitalDisplay")

    #Stauts. 

def saks_gpio_init(self):
        #print 'saks_gpio_init'
        GPIO.setwarnings(False)
        GPIO.cleanup()
        GPIO.setmode(GPIO.BCM)

        GPIO.setup(PINS.BUZZER, GPIO.OUT)
        GPIO.output(PINS.BUZZER, GPIO.HIGH)

        for p in [PINS.IC_TM1637_DI, PINS.IC_TM1637_CLK, PINS.IC_74HC595_DS, PINS.IC_74HC595_SHCP, PINS.IC_74HC595_STCP]:
            GPIO.setup(p, GPIO.OUT)
            GPIO.output(p, GPIO.LOW)

        for p in [PINS.BUZZER, PINS.TACT_RIGHT, PINS.TACT_LEFT, PINS.DIP_SWITCH_1, PINS.DIP_SWITCH_2]:
            GPIO.setup(p, GPIO.OUT)
            GPIO.output(p, GPIO.HIGH)

        for p in [PINS.TACT_RIGHT, PINS.TACT_LEFT, PINS.DIP_SWITCH_1, PINS.DIP_SWITCH_2]:
            GPIO.setup(p, GPIO.IN, pull_up_down = GPIO.PUD_UP) 

def _writeDisplayRam(self, xsize, ysize, data):
    if xsize % 8 != 0:
      xsize = xsize + (8 - xsize % 8)
    xsize /= 8

    self._readBusy()
    GPIO.output(DC, GPIO.LOW)
    self._spi.writebytes([0x24])
    GPIO.output(DC, GPIO.HIGH)

    size = int(xsize * ysize)
    if not isinstance(data, list):
      data = [data] * size

    # SPI buffer size default: 4096 bytes
    i = 0
    for i in range(0, int(size/4096)):
      self._spi.writebytes(data[i:i+4096])
      i += 4096
    self._spi.writebytes(data[i:size]) 

def _init(self):
    # Initialize display
    # Reset driver
    GPIO.output(CS, GPIO.LOW)
    GPIO.output(RST, GPIO.HIGH)
    time.sleep(0.1)
    GPIO.output(RST, GPIO.LOW)
    time.sleep(0.01)
    GPIO.output(RST, GPIO.HIGH)

    # Set register
    self._write(gdo_control)  # Pannel configuration, Gate selection
    self._write(soft_start)   # X decrease, Y decrease
    self._write(vcom_vol)     # VCOM setting
    self._write(dummy_line)   # dummy line per gate
    self._write(gate_time)    # Gage time setting
    self._write(ram_data_entry_mode)  # X increase, Y decrease

    # X-source area, Y-gage area
    xdot = self._xDot-1
    ydot = self._yDot-1
    self._setRamArea(0x00, int(xdot/8), ydot%256, int(ydot/256), 0x00, 0x00)
    self._setRamPointer(0x00, ydot%256, int(ydot/256)) # set ram 

def detect():
	global button
	with MicrophoneStream(RATE, CHUNK) as stream:
		audio_generator = stream.generator()

		for content in audio_generator:
			#import binascii
			#print ("INBYTE: %s" % (binascii.hexlify(bytearray(content))))
			GPIO.output(31, GPIO.HIGH)
			rc = ktkws.detect(content)
			rms = audioop.rms(content,2)
			#print('audio rms = %d' % (rms))
			GPIO.output(31, GPIO.LOW)
			if (button == True):
				rc = 1
				button = False
			
			if (rc == 1):
				GPIO.output(31, GPIO.HIGH)
				play_file("../data/sample_sound.wav")
				return 200 

def btn_detect():
	global btn_status
	with MicrophoneStream(RATE, CHUNK) as stream:
		audio_generator = stream.generator()

		for content in audio_generator:
			GPIO.output(31, GPIO.HIGH)
			rc = ktkws.detect(content)
			rms = audioop.rms(content,2)
			#print('audio rms = %d' % (rms))
			GPIO.output(31, GPIO.LOW)
			if (btn_status == True):
				rc = 1
				btn_status = False			
			if (rc == 1):
				GPIO.output(31, GPIO.HIGH)
				play_file("../data/sample_sound.wav")
				return 200 

def _shift_write(self, value):
        """
        Write given value to the shift register

        :param int value: value which you want to write to shift register
        """
        if self._test_shift_pins() is False:
            print("ERROR: PINs for shift register were not set properly.")
            self.__exit__(None, None, None)

        GPIO.output(self._DIR_LATCH, GPIO.LOW)
        for x in range(0, 8):
            temp = value & 0x80
            GPIO.output(self._DIR_CLK, GPIO.LOW)
            if temp == 0x80:
                # data bit HIGH
                GPIO.output(self._DIR_SER, GPIO.HIGH)
            else:
                # data bit LOW
                GPIO.output(self._DIR_SER, GPIO.LOW)
            GPIO.output(self._DIR_CLK, GPIO.HIGH)
            value <<= 0x01  # shift left

        GPIO.output(self._DIR_LATCH, GPIO.HIGH) 

def writeByte(self, data):
        for i in range(0, 8):
            IO.output(self.__Clkpin, IO.LOW)
            if(data & 0x01):
                IO.output(self.__Datapin, IO.HIGH)
            else:
                IO.output(self.__Datapin, IO.LOW)
            data = data >> 1
            IO.output(self.__Clkpin, IO.HIGH)

        # wait for ACK
        IO.output(self.__Clkpin, IO.LOW)
        IO.output(self.__Datapin, IO.HIGH)
        IO.output(self.__Clkpin, IO.HIGH)
        IO.setup(self.__Datapin, IO.IN)

        while(IO.input(self.__Datapin)):
            sleep(0.001)
            if(IO.input(self.__Datapin)):
                IO.setup(self.__Datapin, IO.OUT)
                IO.output(self.__Datapin, IO.LOW)
                IO.setup(self.__Datapin, IO.IN)
        IO.setup(self.__Datapin, IO.OUT) 

def send_command(self, command):
        self.digital_write(self.dc_pin, GPIO.LOW)
        # the parameter type is list but not int
        # so use [command] instead of command
        epdif.spi_transfer([command]) 

def reset(self):
        self.digital_write(self.reset_pin, GPIO.LOW)         # module reset
        self.delay_ms(200)
        self.digital_write(self.reset_pin, GPIO.HIGH)
        self.delay_ms(200) 

def input(self, pin):
        """Read the specified pin and return HIGH/true if the pin is pulled high,
        or LOW/false if pulled low."""
        raise NotImplementedError 

def is_low(self, pin):
        """Return true if the specified pin is pulled low."""
        return self.input(pin) == LOW


# Basic implementation of multiple pin methods just loops through pins and
# processes each one individually. This is not optimal, but derived classes can
# provide a more optimal implementation that deals with groups of pins
# simultaneously.
# See MCP230xx or PCF8574 classes for examples of optimized implementations. 

def set_low(self, pin):
        """Set the specified pin LOW."""
        self.output(pin, LOW) 

def output_pins(self, pins):
        """Set multiple pins high or low at once.  Pins should be a dict of pin
        name to pin value (HIGH/True for 1, LOW/False for 0).  All provided pins
        will be set to the given values.
        """
        # General implementation just loops through pins and writes them out
        # manually.  This is not optimized, but subclasses can choose to implement
        # a more optimal batch output implementation.  See the MCP230xx class for
        # example of optimized implementation.
        for pin, value in iter(pins.items()):
            self.output(pin, value) 

def reset(self):
        self.digital_write(self.reset_pin, GPIO.LOW)         # module reset
        self.delay_ms(200)
        self.digital_write(self.reset_pin, GPIO.HIGH)
        self.delay_ms(200) 

def send_command(self, command):
        self.digital_write(self.dc_pin, GPIO.LOW)
        # the parameter type is list but not int
        # so use [command] instead of command
        epdif.spi_transfer([command]) 

def __init__(self, vcom=-1.5):

        # check that we are root
        self.early_exit = False
        if geteuid() != 0:
            print("***EPD controller must be run as root!***")
            self.early_exit = True
            exit()

        self.spi = SPI()

        GPIO.setmode(GPIO.BCM)
        GPIO.setwarnings(False)
        GPIO.setup(Pins.HRDY, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
        GPIO.setup(Pins.RESET, GPIO.OUT, initial=GPIO.HIGH)

        # reset
        GPIO.output(Pins.RESET, GPIO.LOW)
        sleep(0.1)
        GPIO.output(Pins.RESET, GPIO.HIGH)

        self.width            = None
        self.height           = None
        self.img_buf_address  = None
        self.firmware_version = None
        self.lut_version      = None
        self.update_system_info()

        self._set_img_buf_base_addr(self.img_buf_address)

        # enable I80 packed mode
        self.write_register(Registers.I80CPCR, 0x1)

        self.set_vcom(vcom) 

def reset(self):
        self.digital_write(self.reset_pin, GPIO.LOW)         # module reset
        self.delay_ms(200)
        self.digital_write(self.reset_pin, GPIO.HIGH)
        self.delay_ms(200) 

def send_command(self, command):
        self.digital_write(self.dc_pin, GPIO.LOW)
        # the parameter type is list but not int
        # so use [command] instead of command
        epdif.spi_transfer([command]) 

def send_command(self, command):
        self.digital_write(self.dc_pin, GPIO.LOW)
        # the parameter type is list but not int
        # so use [command] instead of command
        epdif.spi_transfer([command]) 

def reset(self):
        self.digital_write(self.reset_pin, GPIO.LOW)         # module reset
        self.delay_ms(200)
        self.digital_write(self.reset_pin, GPIO.HIGH)
        self.delay_ms(200)    

##
 #  @brief: set the look-up table register
 ## 

def send_command(self, command):
        self.digital_write(self.dc_pin, GPIO.LOW)
        # the parameter type is list but not int
        # so use [command] instead of command
        epdif.spi_transfer([command]) 

def reset(self):
        self.digital_write(self.reset_pin, GPIO.LOW)         # module reset
        self.delay_ms(200)
        self.digital_write(self.reset_pin, GPIO.HIGH)
        self.delay_ms(200)    

##
 #  @brief: set the look-up table register
 ## 

def send_command(self, command):
        self.digital_write(self.dc_pin, GPIO.LOW)
        # the parameter type is list but not int
        # so use [command] instead of command
        epdif.spi_transfer([command]) 

def send_command(self, command):
        self.digital_write(self.dc_pin, GPIO.LOW)
        # the parameter type is list but not int
        # so use [command] instead of command
        epdif.spi_transfer([command])