updating examples and tested data rates

Author: siddacious

adafruit_icm20x.py

@@ -165,7 +165,7 @@ class ICM20X:  # pylint:disable=too-many-instance-attributes
     _device_id = ROUnaryStruct(_ICM20X_WHO_AM_I, ">B")
     _bank_reg = UnaryStruct(_ICM20X_REG_BANK_SEL, ">B")
     _reset = RWBit(_ICM20X_PWR_MGMT_1, 7)
-    _sleep = RWBit(_ICM20X_PWR_MGMT_1, 6)
+    _sleep_reg = RWBit(_ICM20X_PWR_MGMT_1, 6)
     _low_power_en = RWBit(_ICM20X_PWR_MGMT_1, 5)
     _clock_source = RWBits(3, _ICM20X_PWR_MGMT_1, 0)
 
@@ -246,15 +246,10 @@ def __init__(self, i2c_bus, address):
     def initialize(self):
         """Configure the sensors with the default settings. For use after calling `reset()`"""
 
-        self._bank = 0
-        sleep(0.005)
         self._sleep = False
-        sleep(0.005)
-
         self.accelerometer_range = AccelRange.RANGE_8G  # pylint: disable=no-member
         self.gyro_range = GyroRange.RANGE_500_DPS  # pylint: disable=no-member
 
-        # TODO: Test these
         self.accelerometer_data_rate_divisor = 20  # ~53.57Hz
         self.gyro_data_rate_divisor = 10  # ~100Hz
 
@@ -268,6 +263,20 @@ def reset(self):
         while self._reset:
             sleep(0.005)
 
+    @property
+    def _sleep(self):
+        self._bank = 0
+        sleep(0.005)
+        self._sleep_reg = False
+        sleep(0.005)
+
+    @_sleep.setter
+    def _sleep(self, sleep_enabled):
+        self._bank = 0
+        sleep(0.005)
+        self._sleep_reg = sleep_enabled
+        sleep(0.005)
+
     @property
     def acceleration(self):
         """The x, y, z acceleration values returned in a 3-tuple and are in m / s ^ 2."""

examples/icm20948_accel_data_rate_test.py

@@ -0,0 +1,24 @@
+import time
+import board
+import busio
+from adafruit_icm20x import ICM20948
+
+cycles = 200
+i2c = busio.I2C(board.SCL, board.SDA)
+icm = ICM20948(i2c)
+
+# Cycle between two data rates
+# Best viewed in the Mu serial plotter where you can see how
+# the data rate affects the resolution of the data
+while True:
+    icm.accelerometer_data_rate_divisor = 0  # minimum
+    print("Data Rate:", icm.accelerometer_data_rate)
+    time.sleep(2)
+    for i in range(cycles):
+        print(icm.acceleration)
+
+    icm.accelerometer_data_rate_divisor = 4095  # maximum
+    print("Data Rate:", icm.accelerometer_data_rate)
+    time.sleep(2)
+    for i in range(cycles):
+        print(icm.acceleration)

examples/icm20948_gyro_data_rate_test.py

@@ -0,0 +1,24 @@
+import time
+import board
+import busio
+from adafruit_icm20x import ICM20948
+
+cycles = 200
+i2c = busio.I2C(board.SCL, board.SDA)
+icm = ICM20948(i2c)
+
+# Cycle between two data rates
+# Best viewed in the Mu serial plotter where you can see how
+# the data rate affects the resolution of the data
+while True:
+    icm.gyro_data_rate_divisor = 0  # minimum
+    print("Data Rate:", icm.gyro_data_rate)
+    time.sleep(2)
+    for i in range(cycles):
+        print(icm.gyro)
+
+    icm.gyro_data_rate_divisor = 255  # maximum
+    print("Data Rate:", icm.gyro_data_rate)
+    time.sleep(2)
+    for i in range(cycles):
+        print(icm.gyro)

examples/icm20948_mag_data_rate_test.py

@@ -1,3 +1,4 @@
+# pylint: disable=no-member
 import time
 import board
 import busio
@@ -7,7 +8,6 @@
 i2c = busio.I2C(board.SCL, board.SDA)
 icm = ICM20948(i2c)
 
-icm.accelerometer_data_rate_divisor = 0
 # Cycle between two data rates
 # Best viewed in the Mu serial plotter where you can see how
 # the data rate affects the resolution of the data