first commit

examples/orangepi-sensors/IO-expand.py

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+import sys
+import time
+import wiringpi
+from wiringpi import GPIO
+
+I2C_ADDR = 0x38
+BASE = 100
+
+wiringpi.wiringPiSetup()
+wiringpi.pcf8574Setup(BASE, I2C_ADDR)
+
+i = 0
+while i < 8:
+	wiringpi.pinMode(BASE + i, GPIO.OUTPUT)
+	i += 1
+
+wiringpi.pinMode(BASE + 0, GPIO.OUTPUT)
+
+while True:
+	try:
+		wiringpi.digitalWrite(BASE + 0, GPIO.HIGH)
+		time.sleep(1)
+		wiringpi.digitalWrite(BASE + 0, GPIO.LOW)
+		time.sleep(1)
+	except KeyboardInterrupt:
+		print('\nExit')
+		sys.exit(0)
+