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test_switches.py

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+#!/usr/bin/env python
+#
+# Test push buttons for the Raspberry PI internet radio
+#
+# $Id: test_switches.py,v 1.6 2015/07/13 07:25:32 bob Exp $
+#
+# Author Bob Rathbone
+# Web site http://www.bobrathbone.com
+#
+# License: GNU V3, See https://www.gnu.org/copyleft/gpl.html
+#
+# Disclaimer: Software is provided as is and absolutly no warranties are implied or given.
+#             The authors shall not be liable for any loss or damage however caused.
+#
+
+import sys
+import time
+import RPi.GPIO as GPIO
+
+# Switch definitions
+MENU_SWITCH = 25
+LEFT_SWITCH = 14
+RIGHT_SWITCH = 15
+UP_SWITCH = 17
+DOWN_SWITCH = 18
+MUTE_SWITCH = 4
+
+
+GPIO.setmode(GPIO.BCM)       # Use BCM GPIO numbers
+
+GPIO.setwarnings(False)
+
+# For rev 1 boards with no inbuilt pull-up/down resistors the
+# Wire the GPIO inputs to ground via a 10K resistor and uncomment these lines
+#GPIO.setup(MENU_SWITCH, GPIO.IN)
+#GPIO.setup(UP_SWITCH, GPIO.IN)
+#GPIO.setup(DOWN_SWITCH, GPIO.IN)
+#GPIO.setup(LEFT_SWITCH, GPIO.IN)
+#GPIO.setup(RIGHT_SWITCH, GPIO.IN)
+
+# For rev 2 boards with inbuilt pull-up/down resistors the
+# following lines are used instead of the above, so
+# there is no need to physically wire the 10k resistors
+GPIO.setup(MENU_SWITCH, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+GPIO.setup(UP_SWITCH, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+GPIO.setup(DOWN_SWITCH, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+GPIO.setup(LEFT_SWITCH, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+GPIO.setup(RIGHT_SWITCH, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+GPIO.setup(MUTE_SWITCH, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+
+while True:
+	try:
+		menu_switch = GPIO.input(MENU_SWITCH)
+		up_switch = GPIO.input(UP_SWITCH)
+		down_switch = GPIO.input(DOWN_SWITCH)
+		left_switch = GPIO.input(LEFT_SWITCH)
+		right_switch = GPIO.input(RIGHT_SWITCH)
+		mute_switch = GPIO.input(MUTE_SWITCH)
+
+		if menu_switch:
+			print "menu_switch"
+		elif up_switch:
+			print "up_switch"
+		elif down_switch:
+			print "down_switch"
+		elif left_switch:
+			print "left_switch"
+		elif right_switch:
+			print "right_switch"
+		elif mute_switch:
+			print "mute_switch"
+
+		time.sleep(0.5)
+
+	except KeyboardInterrupt:
+		print "\nExit"
+		GPIO.setwarnings(False)
+		GPIO.cleanup()
+		sys.exit(0)
+
+# End of program