Simple test

Ensure your device works with this simple test.

examples/mma8451_simpletest.py
 1# SPDX-FileCopyrightText: 2018 Tony DiCola for Adafruit Industries
 2# SPDX-License-Identifier: MIT
 3
 4# Simple demo of reading the MMA8451 orientation every second.
 5
 6import time
 7import board
 8import adafruit_mma8451
 9
10
11# Create sensor object, communicating over the board's default I2C bus
12i2c = board.I2C()  # uses board.SCL and board.SDA
13
14# Initialize MMA8451 module.
15sensor = adafruit_mma8451.MMA8451(i2c)
16# Optionally change the address if it's not the default:
17# sensor = adafruit_mma8451.MMA8451(i2c, address=0x1C)
18
19# Optionally change the range from its default of +/-4G:
20# sensor.range = adafruit_mma8451.RANGE_2G  # +/- 2G
21# sensor.range = adafruit_mma8451.RANGE_4G  # +/- 4G (default)
22# sensor.range = adafruit_mma8451.RANGE_8G  # +/- 8G
23
24# Optionally change the data rate from its default of 800hz:
25# sensor.data_rate = adafruit_mma8451.DATARATE_800HZ  #  800Hz (default)
26# sensor.data_rate = adafruit_mma8451.DATARATE_400HZ  #  400Hz
27# sensor.data_rate = adafruit_mma8451.DATARATE_200HZ  #  200Hz
28# sensor.data_rate = adafruit_mma8451.DATARATE_100HZ  #  100Hz
29# sensor.data_rate = adafruit_mma8451.DATARATE_50HZ   #   50Hz
30# sensor.data_rate = adafruit_mma8451.DATARATE_12_5HZ # 12.5Hz
31# sensor.data_rate = adafruit_mma8451.DATARATE_6_25HZ # 6.25Hz
32# sensor.data_rate = adafruit_mma8451.DATARATE_1_56HZ # 1.56Hz
33
34# Main loop to print the acceleration and orientation every second.
35while True:
36    x, y, z = sensor.acceleration
37    print(
38        "Acceleration: x={0:0.3f}m/s^2 y={1:0.3f}m/s^2 z={2:0.3f}m/s^2".format(x, y, z)
39    )
40    orientation = sensor.orientation
41    # Orientation is one of these values:
42    #  - PL_PUF: Portrait, up, front
43    #  - PL_PUB: Portrait, up, back
44    #  - PL_PDF: Portrait, down, front
45    #  - PL_PDB: Portrait, down, back
46    #  - PL_LRF: Landscape, right, front
47    #  - PL_LRB: Landscape, right, back
48    #  - PL_LLF: Landscape, left, front
49    #  - PL_LLB: Landscape, left, back
50    print("Orientation: ", end="")
51    if orientation == adafruit_mma8451.PL_PUF:
52        print("Portrait, up, front")
53    elif orientation == adafruit_mma8451.PL_PUB:
54        print("Portrait, up, back")
55    elif orientation == adafruit_mma8451.PL_PDF:
56        print("Portrait, down, front")
57    elif orientation == adafruit_mma8451.PL_PDB:
58        print("Portrait, down, back")
59    elif orientation == adafruit_mma8451.PL_LRF:
60        print("Landscape, right, front")
61    elif orientation == adafruit_mma8451.PL_LRB:
62        print("Landscape, right, back")
63    elif orientation == adafruit_mma8451.PL_LLF:
64        print("Landscape, left, front")
65    elif orientation == adafruit_mma8451.PL_LLB:
66        print("Landscape, left, back")
67    time.sleep(1.0)