Merge pull request #6 from kattni/update-multi-breakout-demo

Update multi-sensor set_address example.

Author: FoamyGuy

docs/examples.rst

@@ -6,3 +6,9 @@ Ensure your device works with this simple test.
 .. literalinclude:: ../examples/vl53l1x_simpletest.py
     :caption: examples/vl53l1x_simpletest.py
     :linenos:
+
+Use set_address to update the I2C address of additional connected sensors.
+
+.. literalinclude:: ../examples/vl53l1x_set_address_multiple_sensors.py
+    :caption: examples/vl53l1x_set_address_multiple_sensors.py
+    :linenos:

examples/vl53l1x_multiple_on_same_i2c_bus.py

@@ -0,0 +1,68 @@
+# SPDX-FileCopyrightText: 2022 wrdaigle for Adafruit Industries
+# SPDX-FileCopyrightText: 2022 Kattni Rembor for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+"""
+VL53L1X multiple sensor I2C set_address demo.
+
+This example is written for two sensors, but it can easily be modified to include more.
+
+NOTE: A multitude of sensors may require more current than the on-board 3V regulator can output.
+The typical current consumption during active range readings is about 19 mA per sensor.
+"""
+
+import time
+import board
+import digitalio
+import adafruit_vl53l1x
+
+# Define the I2C pins.
+i2c = board.I2C()
+
+xshut = [
+    # Update the D6 and D5 pins to match the pins to which you wired your sensor XSHUT pins.
+    digitalio.DigitalInOut(board.D6),
+    digitalio.DigitalInOut(board.D5),
+    # Add more VL53L1X sensors by defining their XSHUT pins here.
+]
+
+for shutdown_pin in xshut:
+    # Set the shutdown pins to output, and pull them low.
+    shutdown_pin.switch_to_output(value=False)
+    # These pins are active when Low, meaning:
+    #   If the output signal is LOW, then the VL53L1X sensor is off.
+    #   If the output signal is HIGH, then the VL53L1X sensor is on.
+# All VL53L1X sensors are now off.
+
+# Create a list to be used for the array of VL53L1X sensors.
+vl53l1x = []
+
+# Change the address of the additional VL53L1X sensors.
+for pin_number, shutdown_pin in enumerate(xshut):
+    # Turn on the VL53L1X sensors to allow hardware check.
+    shutdown_pin.value = True
+    # Instantiate the VL53L1X I2C object and insert it into the vl53l1x list.
+    # This also performs VL53L1X hardware check.
+    sensor_i2c = adafruit_vl53l1x.VL53L1X(i2c)
+    vl53l1x.append(sensor_i2c)
+    # This ensures no address change on one sensor board, specifically the last one in the series.
+    if pin_number < len(xshut) - 1:
+        # The default address is 0x29. Update it to an address that is not already in use.
+        sensor_i2c.set_address(pin_number + 0x30)
+
+# Print the various sensor I2C addresses to the serial console.
+if i2c.try_lock():
+    print("Sensor I2C addresses:", [hex(x) for x in i2c.scan()])
+    i2c.unlock()
+
+# Start ranging for sensor data collection.
+for sensor in vl53l1x:
+    sensor.start_ranging()
+while True:
+    # Extract the appropriate data from the current list, and print
+    # the sensor distance readings for all available sensors.
+    for sensor_number, sensor in enumerate(vl53l1x):
+        if sensor.data_ready:
+            print("Sensor {}: {}".format(sensor_number + 1, sensor.distance))
+            sensor.clear_interrupt()
+    time.sleep(0.5)