New simple example and error handling in graph.py

Author: Gadgetoid

examples/distance.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+
+import os
+import time
+import sys
+import signal
+
+import VL53L1X
+
+
+print("""distance.py
+
+Display the distance read from the sensor.
+
+Press Ctrl+C to exit.
+
+""")
+
+
+"""
+Open and start the VL53L1X ranging sensor
+"""
+tof = VL53L1X.VL53L1X(i2c_bus=1, i2c_address=0x29)
+tof.open() # Initialise the i2c bus and configure the sensor
+tof.start_ranging(1) # Start ranging, 1 = Short Range, 2 = Medium Range, 3 = Long Range
+
+
+running = True
+
+def exit_handler(signal, frame):
+    global running
+    running = False
+    tof.stop_ranging() # Stop ranging
+    print()
+    sys.exit(0)
+
+signal.signal(signal.SIGINT, exit_handler)
+
+while running:
+    distance_in_mm = tof.get_distance() # Grab the range in mm
+    print("Distance: {}mm".format(distance_in_mm))
+    time.sleep(0.1)
+

examples/graph.py

@@ -26,8 +26,11 @@
 """
 Grab the width/height of the terminal using `stty size`
 """
-rows, cols = [int(c) for c in os.popen("stty size", "r").read().split()]
-
+try:
+    rows, cols = [int(c) for c in os.popen("stty size", "r").read().split()]
+except ValueError:
+    print("Cannot get size of tty! Try running in Terminal.")
+    sys.exit(1)
 
 """
 Open and start the VL53L1X ranging sensor