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54 lines
1.4 KiB
54 lines
1.4 KiB
4 years ago
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The PWM Driver(bare-bone)
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=========================
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Pulse-width modulation (PWM) is used to create an analog behavior
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digitally by controlling the amount of power transferred to the
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connected peripheral. This is achieved by controlling the high period
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(duty-cycle) of a periodic signal.
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User can change the period or duty cycle whenever PWM is running. The
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function pwm_set_parameters is used to configure these two parameters.
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Note these are raw register values and the parameter duty_cycle means
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the period of first half during one cycle, which should be not beyond
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total period value.
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In addition, user can also get multi PWM channels output from different
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peripherals at the same time, which is implemented more flexible by the
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function pointers.
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Features
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--------
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* Initialization/de-initialization
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* Enabling/disabling
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* Run-time control of PWM duty-cycle and period
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* Notifications about errors and one PWM cycle is done
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Applications
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------------
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Motor control, ballast, LED, H-bridge, power converters, and
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other types of power control applications.
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Dependencies
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------------
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The peripheral which can perform waveform generation like frequency
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generation and pulse-width modulation, such as Timer/Counter.
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Concurrency
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-----------
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N/A
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Limitations
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-----------
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The current driver doesn't support the features like recoverable,
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non-recoverable faults, dithering, dead-time insertion.
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Known issues and workarounds
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----------------------------
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N/A
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