def __init__(self, dout, pd_sck, gain=128):
self.PD_SCK = pd_sck
self.DOUT = dout
# Mutex for reading from the HX711, in case multiple threads in client
# software try to access get values from the class at the same time.
self.readLock = threading.Lock()
GPIO.setmode(GPIO.WIRINGPI)
GPIO.setup(self.PD_SCK, GPIO.OUT)
GPIO.setup(self.DOUT, GPIO.IN)
self.GAIN = 0
# The value returned by the hx711 that corresponds to your reference
# unit AFTER dividing by the SCALE.
self.REFERENCE_UNIT = 1
self.REFERENCE_UNIT_B = 1
self.OFFSET = 1
self.OFFSET_B = 1
self.lastVal = int(0)
self.DEBUG_PRINTING = False
self.byte_format = 'MSB'
self.bit_format = 'MSB'
self.set_gain(gain)
# Think about whether this is necessary.
time.sleep(1)
VOLTAGE_REF = 2.497 # value of the excitement voltage reference THERMI_WIRE = 0.6 # value of the twin wire resistor # Odroid configuration GPIO.setmode(GPIO.BOARD) # pin used START_BTN_PIN = 15 # pin on which the start button is connected PAUSE_BTN_PIN = 13 # pin on which the pause button is connected STOP_BTN_PIN = 33 # pin on which the start button is connected START_LED_PIN = 16 # pin on which the start led is connected PAUSE_LED_PIN = 18 # pin on which the pause led is connected STATE_LED_PIN = 8 # pin on which the state led is connected BUZZER_PIN = 35 # pin on which the buzzer is connected # pin configuration GPIO.setup(START_BTN_PIN, GPIO.IN) GPIO.setup(PAUSE_BTN_PIN, GPIO.IN) GPIO.setup(STOP_BTN_PIN, GPIO.IN) GPIO.pinMode(STOP_BTN_PIN, GPIO.PUD_UP) GPIO.setup(START_LED_PIN, GPIO.OUT) GPIO.setup(PAUSE_LED_PIN, GPIO.OUT) GPIO.setup(STATE_LED_PIN, GPIO.OUT) GPIO.setup(BUZZER_PIN, GPIO.OUT) # Registre configuration # coils THERMIS_POW_REG = 0x00 # register which stores the thermistor power state LEVEL1_FLAG_REG = 0x01 # register which stores the flag which enables/disables the level 1 sensor management LEVEL2_FLAG_REG = 0x02 # register which stores the flag which enables/disables the level 2 sensor management PRESS_FLAG_REG = 0x03 # register which stores the flag which enables/disables the pressure sensor management PUMP_DIR_REG = 0x10 # register which stores the pump direction