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[docs] update pwm and get_start rst

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jzlv 2021-07-06 16:03:20 +08:00
parent 3235d20a7a
commit 1e5f80ab19
77 changed files with 203 additions and 167 deletions
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22
docs/development_guide/source/api_reference/peripheral/api_pwm.rst
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@ -250,17 +250,29 @@ PWM设备 ``event`` 类型如下
- dev 需要关闭的pwm通道句柄
**pwm_channel_update**
^^^^^^^^^^^^^^^^^^^^^^^
**pwm_channel_freq_update**
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
``pwm_channel_update`` 用于更新PWM通道的频率和占空比。实际是调用 ``device_control`` ，其中 ``cmd`` 为 ``DEVICE_CTRL_CONFIG``。
``pwm_channel_freq_update`` 用于更新PWM通道的频率。实际是调用 ``device_control`` ，其中 ``cmd`` 为 ``DEIVCE_CTRL_PWM_FREQUENCE_CONFIG``。
.. code-block:: C
pwm_channel_update(dev,cfg)
pwm_channel_freq_update(dev,count)
- dev 需要更新的pwm通道句柄
- cfg pwm_config_t句柄
- count 周期值 ，实际频率=pwm_clk/pwm_div/count
**pwm_channel_dutycycle_update**
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
``pwm_channel_dutycycle_update`` 用于更新PWM通道的频率。实际是调用 ``device_control`` ，其中 ``cmd`` 为 ``DEIVCE_CTRL_PWM_DUTYCYCLE_CONFIG``。
.. code-block:: C
pwm_channel_dutycycle_update(dev,cfg)
- dev 需要更新周期计数值的pwm通道句柄
- cfg pwm_dutycycle_config_t句柄
**pwm_it_pulse_count_update**