from time import sleep
#import RPi.GPIO as GPIO
import RPi as GPIO


# MCP3208縺九ｉSPI騾壻ｿ｡縺ｧ12繝薙ャ繝医�繝�ず繧ｿ繝ｫ蛟､繧貞叙蠕励€�0縺九ｉ7縺ｮ8繝√Ε繝ｳ繝阪Ν菴ｿ逕ｨ蜿ｯ
def readadc(adcnum, clockpin, mosipin, misopin, cspin):
    import sys
    if "RPi.GPIO" in sys.modules:
        pass
    else:
        return GPIO.readadc(adcnum, clockpin, mosipin, misopin, cspin)
    
    if adcnum > 7 or adcnum < 0:
        return -1
    GPIO.output(cspin, GPIO.HIGH)
    GPIO.output(clockpin, GPIO.LOW)
    GPIO.output(cspin, GPIO.LOW)

    commandout = adcnum
    commandout |= 0x18  # 繧ｹ繧ｿ繝ｼ繝医ン繝�ヨ�九す繝ｳ繧ｰ繝ｫ繧ｨ繝ｳ繝峨ン繝�ヨ
    commandout <<= 3    # LSB縺九ｉ8繝薙ャ繝育岼繧帝€∽ｿ｡縺吶ｋ繧医≧縺ｫ縺吶ｋ
    for i in range(5):
        # LSB縺九ｉ謨ｰ縺医※8繝薙ャ繝育岼縺九ｉ4繝薙ャ繝育岼縺ｾ縺ｧ繧帝€∽ｿ｡
        if commandout & 0x80:
            GPIO.output(mosipin, GPIO.HIGH)
        else:
            GPIO.output(mosipin, GPIO.LOW)
        commandout <<= 1
        GPIO.output(clockpin, GPIO.HIGH)
        GPIO.output(clockpin, GPIO.LOW)
    adcout = 0
    # 13繝薙ャ繝郁ｪｭ繧€�医レ繝ｫ繝薙ャ繝茨ｼ�12繝薙ャ繝医ョ繝ｼ繧ｿ��
    for i in range(13):
        GPIO.output(clockpin, GPIO.HIGH)
        GPIO.output(clockpin, GPIO.LOW)
        adcout <<= 1
        if i>0 and GPIO.input(misopin)==GPIO.HIGH:
            adcout |= 0x1
    GPIO.output(cspin, GPIO.HIGH)
    return adcout


GPIO.setmode(GPIO.BCM)
SPICLK  =  11
SPIMOSI  =  10
SPIMISO  =  9
SPICS  =  8
GPIO.setup(SPICLK,  GPIO.OUT)
GPIO.setup(SPIMOSI,  GPIO.OUT)
GPIO.setup(SPIMISO,  GPIO.IN)
GPIO.setup(SPICS,  GPIO.OUT)
GPIO.setup(13,GPIO.OUT)

try:
    while True: 
        input_val = readadc(0,SPICLK,SPIMOSI,SPIMISO,SPICS) # 0-4095
        print("input_val:",input_val,"電圧:",(input_val/4095)*3.3)
        V=input_val/4095*3.3
        if V>1.65:
            GPIO.output(13,GPIO.HIGH)
        else:
            GPIO.output(13,GPIO.LOW)
        sleep(0.2)
except KeyboardInterrupt:
    pass

GPIO.cleanup()