56 lines
2.0 KiB
ReStructuredText
56 lines
2.0 KiB
ReStructuredText
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========================
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Analog (ADC/DAC) Drivers
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========================
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The NuttX analog drivers are split into two parts:
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#. An "upper half", generic driver that provides the common analog
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interface to application level code, and
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#. A "lower half", platform-specific driver that implements the
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low-level controls to implement the analog functionality.
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- General header files for the NuttX analog drivers reside in
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``include/nuttx/analog/``. These header files includes both the
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application level interface to the analog driver as well as the
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interface between the "upper half" and "lower half" drivers.
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- Common analog logic and share-able analog drivers reside in the
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``drivers/analog/``.
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- Platform-specific drivers reside in
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``arch/``\ *<architecture>*\ ``/src/``\ *<hardware>* directory
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for the specific processor *<architecture>* and for the
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specific *<chip>* analog peripheral devices.
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ADC Drivers
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-----------
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- ``include/nuttx/analog/adc.h``. All structures and APIs needed
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to work with ADC drivers are provided in this header file. This
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header file includes:
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#. Structures and interface descriptions needed to develop a
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low-level, architecture-specific, ADC driver.
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#. To register the ADC driver with a common ADC character
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driver.
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#. Interfaces needed for interfacing user programs with the
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common ADC character driver.
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- ``drivers/analog/adc.c``. The implementation of the common ADC
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character driver.
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DAC Drivers
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-----------
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- ``include/nuttx/analog/dac.h``. All structures and APIs needed
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to work with DAC drivers are provided in this header file. This
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header file includes:
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#. Structures and interface descriptions needed to develop a
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low-level, architecture-specific, DAC driver.
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#. To register the DAC driver with a common DAC character
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driver.
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#. Interfaces needed for interfacing user programs with the
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common DAC character driver.
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- ``drivers/analog/dac.c``. The implementation of the common DAC
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character driver.
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