M5Stack Sync Photocell Reveiver

SyncPhotocellReceiver

from m5stack import lcd
import time
import machine 

lcd.clear()
lcd.setCursor(0, 0)
lcd.setColor(lcd.WHITE)

dataPin = machine.ADC(machine.Pin(36, machine.Pin.IN))
dataPin.atten(machine.ADC.ATTN_11DB)

syncPin = machine.ADC(machine.Pin(35, machine.Pin.IN))
syncPin.atten(machine.ADC.ATTN_11DB)

OFFcheckValue = 600
ONcheckValue = 900

#スピーカー音を消す
#http://t-yosh.hatenablog.com/entry/2017/12/28/235947
dac = machine.DAC(machine.Pin(25))
dac.write(0)

lcd.font(lcd.FONT_Comic)
lcd.clear()
lcd.setCursor(0, 0)

syncPinValue = 0
x = 0
y = 0
while True:
    #syncPinがONになるのを待つ
    while syncPinValue < ONcheckValue:
        syncPinValue = syncPin.read()   
        time.sleep_ms(50)
    
    print ("IN:" + str(syncPinValue) + "\n")
    
    #dataを読む
    value = dataPin.read()
    if value > ONcheckValue:
        lcd.print("1")
    else:
        lcd.print("0")
        
    x = x + 1
    if x >= 8:
        x = 0
        y = y + 1
        
    lcd.setCursor(x * 25, y * 25)
    time.sleep_ms(50)
    
    #syncPinがOFFになるのを待つ
    while syncPinValue > OFFcheckValue:
        syncPinValue = syncPin.read()   
        time.sleep_ms(50)
        
    print ("OUT:" + str(syncPinValue) + "\n")