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57 lines
1.3 KiB
57 lines
1.3 KiB
.. currentmodule:: pyb
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.. _pyb.Accel:
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class Accel -- accelerometer control
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====================================
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Accel is an object that controls the accelerometer. Example usage::
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accel = pyb.Accel()
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for i in range(10):
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print(accel.x(), accel.y(), accel.z())
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Raw values are between -32 and 31.
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Constructors
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------------
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.. class:: Accel()
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Create and return an accelerometer object.
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Methods
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-------
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.. method:: Accel.filtered_xyz()
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Get a 3-tuple of filtered x, y and z values.
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Implementation note: this method is currently implemented as taking the
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sum of 4 samples, sampled from the 3 previous calls to this function along
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with the sample from the current call. Returned values are therefore 4
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times the size of what they would be from the raw x(), y() and z() calls.
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.. method:: Accel.tilt()
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Get the tilt register.
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.. method:: Accel.x()
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Get the x-axis value.
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.. method:: Accel.y()
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Get the y-axis value.
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.. method:: Accel.z()
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Get the z-axis value.
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Hardware Note
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-------------
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The accelerometer uses I2C bus 1 to communicate with the processor. Consequently
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when readings are being taken pins X9 and X10 should be unused (other than for
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I2C). Other devices using those pins, and which therefore cannot be used
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concurrently, are UART 1 and Timer 4 channels 1 and 2.
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