Merge remote-tracking branch 'pimoroni/master'

Author: RogueM

library/cap1xxx.py

@@ -5,16 +5,26 @@
 CAP1208 - 8 Inputs
 CAP1188 - 8 Inputs, 8 LEDs
 """
+
+import atexit
+import signal
+import sys
+import threading
+import time
+
 try:
     from smbus import SMBus
 except ImportError:
-    raise ImportError(
-        "This library requires python-smbus. Install "
-        "with: sudo apt-get install python-smbus or "
-        "sudo apt-get install python3-smbus")
+    if sys.version_info[0] < 3:
+        exit("This library requires python-smbus\nInstall with: sudo apt-get install python-smbus")
+    elif sys.version_info[0] == 3:
+        exit("This library requires python3-smbus\nInstall with: sudo apt-get install python3-smbus")
+
+try:
+    import RPi.GPIO as GPIO
+except ImportError:
+    exit("This library requires the RPi.GPIO module\nInstall with: sudo pip install RPi.GPIO")
 
-import time, signal, atexit, sys, threading
-import RPi.GPIO as GPIO
 
 # DEVICE MAP
 DEFAULT_ADDR = 0x28

library/setup.py

@@ -46,5 +46,5 @@
     url             = 'http://shop.pimoroni.com',
     classifiers     = classifiers,
     py_modules      = ['cap1xxx'],
-    install_requires= []
+    install_requires= [ 'RPi.GPIO' ]
 )