def init_hw():
# Display
i2c = busio.I2C(board.SCL, board.SDA)
display = Sparkfun_SerLCD_I2C(i2c)
display.clear()
# Thermocouples
spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
therm0 = MAX31855(spi, digitalio.DigitalInOut(pinsetup['therm0']))
therm1 = MAX31855(spi, digitalio.DigitalInOut(pinsetup['therm1']))
# Relays (high to enable because we go through the transistor switch)
relay0 = digitalio.DigitalInOut(pinsetup['relay0'])
relay0.direction = digitalio.Direction.OUTPUT
relay0.value = False
relay1 = digitalio.DigitalInOut(pinsetup['relay1'])
relay1.direction = digitalio.Direction.OUTPUT
relay1.value = False
# Encoder setup
enc = rotaryio.IncrementalEncoder(pinsetup['encoderA'],
pinsetup['encoderB'])
pb = digitalio.DigitalInOut(pinsetup['button'])
pb.direction = digitalio.Direction.INPUT
pb.pull = digitalio.Pull.DOWN
switch = Debouncer(pb)
# RGB on dial (low to enable)
r = digitalio.DigitalInOut(pinsetup['r'])
r.direction = digitalio.Direction.OUTPUT
r.value = True
g = digitalio.DigitalInOut(pinsetup['g'])
g.direction = digitalio.Direction.OUTPUT
g.value = True
b = digitalio.DigitalInOut(pinsetup['b'])
b.direction = digitalio.Direction.OUTPUT
b.value = True
return (display, therm0, therm1, relay0, relay1, enc, switch, (r, g, b))
def __init__(self, logger):
self.logger = logger
i2c = busio.I2C(1, 0)
self.serlcd = Sparkfun_SerLCD_I2C(i2c)
self.colors = {
"Black": [0, 0, 0],
"White": [255, 255, 255],
"Red": [255, 0, 0],
"Orange": [255, 140, 0],
"Yellow": [255, 255, 0],
"Green": [0, 255, 0],
"Teal": [0, 255, 255],
"Blue": [0, 0, 255],
"Indigo": [75, 0, 140],
"Purple": [130, 32, 240],
"Grey": [128, 128, 128]
}
self.countDownDigits = 0
self.lcdRow = 2
self.lcdCol = 16
self.setColorName("White")
self.writeCenter("Shots Alarm", " ")
self.shots = False
Based on Arduino code written by Gaston Williams and
Nathan Seidle @ Sparkfun, August 22, 2018.
Example 10 - Turn Off Display:
This program writes a message to the display,
then uses the display(True) and display(False)
methods to turn the display on and off.
"""
from time import sleep
import board
import busio
from sparkfun_serlcd import Sparkfun_SerLCD_I2C
i2c = busio.I2C(board.SCL, board.SDA)
serlcd = Sparkfun_SerLCD_I2C(i2c)
print('Example 10: Turn Off Display')
print('Press Ctrl-C to end program.')
serlcd.clear()
serlcd.write("Display on/off.")
try:
while True:
serlcd.display(False)
sleep(0.5)
serlcd.display(True)
sleep(0.5)
