49 lines
1.0 KiB
Python
49 lines
1.0 KiB
Python
#!/usr/bin/python
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# -*- coding:utf-8 -*-
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import RPi.GPIO as GPIO
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import time
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PIN = 18;
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(PIN,GPIO.IN,GPIO.PUD_UP)
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print('IRM Test Start ...')
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try:
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while True:
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if GPIO.input(PIN) == 0:
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count = 0
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while GPIO.input(PIN) == 0 and count < 200: #9ms
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count += 1
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time.sleep(0.00006)
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count = 0
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while GPIO.input(PIN) == 1 and count < 80: #4.5ms
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count += 1
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time.sleep(0.00006)
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idx = 0
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cnt = 0
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data = [0,0,0,0]
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for i in range(0,32):
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count = 0
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while GPIO.input(PIN) == 0 and count < 15: #0.56ms
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count += 1
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time.sleep(0.00006)
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count = 0
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while GPIO.input(PIN) == 1 and count < 40: #0: 0.56mx
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count += 1 #1: 1.69ms
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time.sleep(0.00006)
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if count > 8:
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data[idx] |= 1<<cnt
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if cnt == 7:
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cnt = 0
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idx += 1
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else:
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cnt += 1
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if data[0]+data[1] == 0xFF and data[2]+data[3] == 0xFF: #check
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print("Get the key: 0x%02x" %data[2])
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except KeyboardInterrupt:
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GPIO.cleanup();
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