jepler/Adafruit_CircuitPython_FXAS21002C
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Small fixes.

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This commit is contained in:
Tony DiCola 2017-12-01 15:03:45 -08:00
parent 2ab0e1c6c9
commit b3981e722c
3 changed files with 11 additions and 7 deletions
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1
.gitignore vendored
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@ -1,3 +1,4 @@
__pycache__
_build
*.pyc
*.mpy

15
adafruit_fxas21002c.py
View file

@ -71,7 +71,7 @@ class FXAS21002C:
def __init__(self, i2c, address=_FXAS21002C_ADDRESS,
gyro_range=GYRO_RANGE_250DPS):
assert gyro_range in (GYRO_RANGE_250DPS, GYRO_RANGE_500DPS,
GYRO_RANGE_100DPS, GYRO_RANGE_2000DPS)
GYRO_RANGE_1000DPS, GYRO_RANGE_2000DPS)
self._gyro_range = gyro_range
self._device = i2c_device.I2CDevice(i2c, address)
# Check for chip ID value.
@ -87,8 +87,11 @@ class FXAS21002C:
elif gyro_range == GYRO_RANGE_2000DPS:
ctrlReg0 = 0x00
# Reset then switch to active mode with 100Hz output
self._write_u8(_GYRO_REGISTER_CTRL_REG1, 0x00) # Standby
self._write_u8(_GYRO_REGISTER_CTRL_REG1, (1<<6)) # Reset
# Putting into standy doesn't work as the chip becomes instantly
# unresponsive. Perhaps CircuitPython is too slow to go into standby
# and send reset? Keep these two commented for now:
#self._write_u8(_GYRO_REGISTER_CTRL_REG1, 0x00) # Standby)
#self._write_u8(_GYRO_REGISTER_CTRL_REG1, (1<<6)) # Reset
self._write_u8(_GYRO_REGISTER_CTRL_REG0, ctrlReg0) # Set sensitivity
self._write_u8(_GYRO_REGISTER_CTRL_REG1, 0x0E) # Active
time.sleep(0.1) # 60 ms + 1/ODR
@ -97,7 +100,7 @@ class FXAS21002C:
# Read an 8-bit unsigned value from the specified 8-bit address.
with self._device:
self._BUFFER[0] = address & 0xFF
self._device.write(self._BUFFER, end=1)
self._device.write(self._BUFFER, end=1, stop=False)
self._device.readinto(self._BUFFER, end=1)
return self._BUFFER[0]
@ -115,8 +118,8 @@ class FXAS21002C:
"""
# Read 7 bytes from the sensor.
with self._device:
self._BUFFER[0] = GYRO_REGISTER_STATUS | 0x80
self._device.write(self._BUFFER, end=1)
self._BUFFER[0] = _GYRO_REGISTER_STATUS | 0x80
self._device.write(self._BUFFER, end=1, stop=False)
self._device.readinto(self._BUFFER)
# Parse out the gyroscope data.
status = self._BUFFER[0]

2
examples/simpletest.py
View file

@ -21,7 +21,7 @@ while True:
# Read gyroscope.
gyro_x, gyro_y, gyro_z = sensor.gyroscope
# Print values.
print('Gyroscope (radians/s): ({0:0.3f},{0:0.3f},{0:0.3f})'.format(
print('Gyroscope (radians/s): ({0:0.3f},{1:0.3f},{2:0.3f})'.format(
gyro_x, gyro_y, gyro_z))
# Delay for a second.
time.sleep(1.0)