Simple test

Ensure your device works with this simple test.

examples/vcnl4200_simpletest.py

# SPDX-FileCopyrightText: Copyright (c) 2024 Liz Clark for Adafruit Industries
#
# SPDX-License-Identifier: MIT

import time

import board

import adafruit_vcnl4200

i2c = board.I2C()

sensor = adafruit_vcnl4200.Adafruit_VCNL4200(i2c)

while True:
    print(f"Proximity is: {sensor.proximity}")
    print(f"Ambient is: {sensor.lux}")
    time.sleep(0.1)

Full test

Try out all of the options for the VCNL4200.

examples/vcnl4200_fulltest.py

# SPDX-FileCopyrightText: 2024 Liz Clark for Adafruit Industries
#
# SPDX-License-Identifier: MIT
"""VCNL4200 Full Test"""

import time

import board
import busio

from adafruit_vcnl4200 import LED_I, PS_INT, Adafruit_VCNL4200

i2c = board.I2C()
sensor = Adafruit_VCNL4200(i2c)

print(" '''ALS Settings''' ")
print(f"Lux Persistence Mode: {sensor.als_persistence}")
print(f"Lux Integration Mode: {sensor.als_integration_time}")
print(f"Lux Persistence Mode: {sensor.als_persistence}")
sensor.als_threshold_low = 0
print(f"Lux Low Threshold: {sensor.als_low_threshold}")
sensor.als_threshold_high = 500
print(f"Lux High Threshold: {sensor.als_high_threshold}")

print(" '''Proximity Settings''' ")
sensor.prox_interrupt = PS_INT["BOTH"]
print(f"Proximity Interrupt Mode: {sensor.prox_interrupt}")
sensor.prox_interrupt_logic_mode = False
print(f"Proximity Interrupt Logic Mode: {sensor.prox_interrupt_logic_mode}")
sensor.prox_int_threshold_low = 0
print(f"Proximity Threshold Low: {sensor.prox_int_threshold_low}")
sensor.prox_int_threshold_high = 500
print(f"Proximity Threshold High: {sensor.prox_int_threshold_high}")
sensor.prox_active_force = False
print(f"Proximity Active Force: {sensor.prox_active_force}")
sensor.prox_smart_persistence = False
print(f"Proximity Smart Persistence: {sensor.prox_smart_persistence}")
sensor.prox_led_current = LED_I["50MA"]
print(f"Proximity IR LED Current: {sensor.prox_led_current}")
sensor.prox_cancellation_level = 0
print(f"Proximity Cancellation Level: {sensor.prox_cancellation_level}")
print(f"Proximity Integration Mode: {sensor.prox_integration_time}")
print(f"Proximity Persistence Mode: {sensor.prox_persistence}")
print(f"Proximity Duty Cycle: {sensor.prox_duty}")

print(" '''Proximity Sunlight Settings''' ")
print(f"Sun Protect Polarity: {sensor.sun_protect_polarity}")
sensor.prox_boost_typical_sunlight_capability = False
print(
    f"Proximity Boost Typical Sunlight Capability: {sensor.prox_boost_typical_sunlight_capability}"
)
sensor.prox_sun_cancellation = False
print(f"Proximity Sun Cancellation: {sensor.prox_sun_cancellation}")
sensor.prox_sunlight_double_immunity = False
print(f"Proximity Sunlight Double Immunity: {sensor.prox_sunlight_double_immunity}")

print(f"Interrupt Flags: {sensor.interrupt_flags}")
print(f"Proximity is: {sensor.proximity}")
print(f"Ambient is: {sensor.lux}")

while True:
    pass

Interrupts test

Test out high and low threshold interrupts for the proximity and lux sensors.

examples/vcnl4200_interrupts.py

# SPDX-FileCopyrightText: 2024 Liz Clark for Adafruit Industries
#
# SPDX-License-Identifier: MIT
"""Test interrupts for VCNL4200"""

import time

import board
import digitalio

from adafruit_vcnl4200 import ALS_PERS, PS_INT, PS_PERS, Adafruit_VCNL4200

i2c = board.I2C()
sensor = Adafruit_VCNL4200(i2c)

interrupt_pin = digitalio.DigitalInOut(board.D5)
interrupt_pin.direction = digitalio.Direction.INPUT
interrupt_pin.pull = digitalio.Pull.UP

sensor.als_threshold_low = 500
sensor.als_threshold_high = 1000
sensor.prox_int_threshold_low = 200
sensor.prox_int_threshold_high = 600

sensor.als_interrupt(enabled=True, white_channel=False)
sensor.prox_interrupt = PS_INT["BOTH"]
sensor.prox_interrupt_logic_mode = False
sensor.als_persistence = ALS_PERS["1"]
sensor.prox_persistence = PS_PERS["1"]

print("Monitoring interrupts...")

while True:
    if not interrupt_pin.value:  # Active low
        print("Interrupt triggered!")
        interrupt_flags = sensor.interrupt_flags
        print("Interrupt flags:", interrupt_flags)

        print("Proximity:", sensor.proximity)
        print("Ambient Light:", sensor.lux)
        if interrupt_flags["PROX_AWAY"]:
            print("Proximity: Object moved away")
        if interrupt_flags["PROX_CLOSE"]:
            print("Proximity: Object close")
        if interrupt_flags["ALS_HIGH"]:
            print("ALS: Light level too high")
        if interrupt_flags["ALS_LOW"]:
            print("ALS: Light level too low")
        time.sleep(0.5)
    else:
        print(f"Ambient: {sensor.lux}, Proximity: {sensor.proximity}")

    time.sleep(0.1)