f4da9b9705
This commit introduces a new Sensor Clock API, enabling the retrieval of cycle counts and conversion to nanoseconds based on the system or external clock. The API includes: - `sensor_clock_get_cycles()` to get the current cycle count from the sensor clock. - `sensor_clock_cycles_to_ns()` to convert cycles to nanoseconds using the clock's frequency. The implementation supports both system clocks and external clocks defined in the device tree, making the sensor clock integration more flexible for various sensor use cases. Signed-off-by: Mark Chen <mark.chen@cienet.com>
54 lines
1.3 KiB
ReStructuredText
54 lines
1.3 KiB
ReStructuredText
.. zephyr:code-sample:: sensor_clock
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:name: Sensor Clock
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:relevant-api: sensor_interface
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Test and debug Sensor Clock functionality.
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Overview
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********
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This sample application demonstrates how to select the sensor clock source
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and utilize the Sensor Clock API.
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Building and Running
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********************
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The sample below uses the :ref:`nrf52840dk_nrf52840` and :ref:`nrf52833dk_nrf52833` boards.
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To run this sample, ensure the following configurations:
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* Enable one of the Kconfig options:
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:kconfig:option:`CONFIG_SENSOR_CLOCK_COUNTER`,
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:kconfig:option:`CONFIG_SENSOR_CLOCK_RTC`, or
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:kconfig:option:`CONFIG_SENSOR_CLOCK_SYSTEM`.
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Build and run the sample with the following command:
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.. zephyr-app-commands::
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:zephyr-app: samples/sensor/clock
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:board: <board to use>
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:goals: build flash
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Sample Output
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=============
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The application will print the current sensor clock cycles and
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their corresponding time in nanoseconds.
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.. code-block:: console
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Cycles: 143783087
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Nanoseconds: 8986442937
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Cycles: 159776386
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Nanoseconds: 9986024125
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Cycles: 175772543
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Nanoseconds: 10985783937
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Cycles: 191771203
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Nanoseconds: 11985700187
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Cycles: 207758870
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Nanoseconds: 12984929375
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Cycles: 223752074
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Nanoseconds: 13984504625
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...
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