remove atexit and cleanup, also fix the formatting

Author: Smankusors

adafruit_vl53l0x.py

@@ -45,7 +45,6 @@
   https://github.com/adafruit/circuitpython/releases
 * Adafruit's Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
 """
-import atexit
 import math
 import time
 
@@ -321,7 +320,6 @@ def __init__(self, i2c, address=41, io_timeout_s=0):
         self._perform_single_ref_calibration(0x00)
         # "restore the previous Sequence Config"
         self._write_u8(_SYSTEM_SEQUENCE_CONFIG, 0xE8)
-        atexit.register(self._cleanup)
 
     def _read_u8(self, address):
         # Read an 8-bit unsigned value from the specified 8-bit address.
@@ -458,11 +456,6 @@ def _get_sequence_step_timeouts(self, pre_range):
             pre_range_mclks,
         )
 
-    def _cleanup(self):
-        #when exiting, don't forget to also turn off continuous mode
-        if (self._continuous_mode):
-            self.stopContinuous()
-
     @property
     def signal_rate_limit(self):
         """The signal rate limit in mega counts per second."""
@@ -543,7 +536,7 @@ def range(self):
         """
         # Adapted from readRangeSingleMillimeters in pololu code at:
         #   https://github.com/pololu/vl53l0x-arduino/blob/master/VL53L0X.cpp
-        if (not self._continuous_mode):
+        if not self._continuous_mode:
             self.doRangeMeasurement()
         return self.readRange()
 
@@ -600,7 +593,7 @@ def continuous_mode(self):
 
     @continuous_mode.setter
     def continuous_mode(self, enabled):
-        if (enabled):
+        if enabled:
             self.startContinuous()
         else:
             self.stopContinuous()
@@ -642,7 +635,7 @@ def stopContinuous(self):
             (0x00, 0x00),
             (0x91, 0x00),
             (0x00, 0x01),
-            (0xFF, 0x00)
+            (0xFF, 0x00),
         ):
             self._write_u8(pair[0], pair[1])
         self._continuous_mode = False

examples/vl53l0x_continuous.py

@@ -49,7 +49,7 @@
     # turn on the VL53L0X to allow hardware check
     power_pin.value = True
     # instantiate the VL53L0X sensor on the I2C bus & insert it into the "vl53" list
-    vl53.insert(i, VL53L0X(i2c))    # also performs VL53L0X hardware check
+    vl53.insert(i, VL53L0X(i2c))  # also performs VL53L0X hardware check
 
     # start continous mode
     vl53[i].continuous_mode = True
@@ -58,7 +58,7 @@
 
     # you will see the benefit of continous mode if you set the measurement timing
     # budget very high.
-    #vl53[i].measurement_timing_budget = 2000000
+    # vl53[i].measurement_timing_budget = 2000000
 
     # no need to change the address of the last VL53L0X sensor
     if i < len(xshut) - 1:
@@ -75,6 +75,7 @@
 #   >>>     [hex(x) for x in i2c.scan()]
 #   >>>     i2c.unlock()
 
+
 def detect_range(count=5):
     """ take count=5 samples """
     while count:
@@ -83,10 +84,22 @@ def detect_range(count=5):
         time.sleep(1.0)
         count -= 1
 
+
+def stop_continuous():
+    """ this is not required, unless if you want to save some energy """
+    for sensor in vl53:
+        sensor.continuous_mode = False
+        # or alternatively with this
+        # sensor.stopContinuous()
+
+
 if __name__ == "__main__":
     detect_range()
+    stop_continuous()
 else:
     print(
         "Multiple VL53L0X sensors' addresses are assigned properly\n"
-        "execute detect_range() to read each sensors range readings"
-    )
+        "execute detect_range() to read each sensors range readings.\n"
+        "When you are done with readings, execute stop_continuous()\n"
+        "to stop the continuous mode."
+    )