.. _pwmv2_output:

Pwm Output
====================

Overiew
-------

**pwm**  project configures several different types of waveforms and outputs them.

- Forced output

- Edge-aligned

- Center-aligned

- Center-aligned complementary

- PWM fault

Configurations
--------------

- Dual Channel Oscilloscope

- Install the serial terminal, view  :ref:`board information <board_resource>` , and configure the serial terminal parameters

-  :ref:`PWM_P0 and PWM_P1 pins <board_resource>`  Check the information according to the board model

Running the Demo
----------------

- After power on, the oscilloscope can observe P0, P1 output high level, low level, edge-aligned PWM, center-aligned PWM and center-aligned complementary PWM

- After the fault pin is given a high level, P0 and P1 pin PWM outputs are low, and after the fault pin is given a low level, P0 and P1 pin P return to normal

- Serial port printing information:


.. code-block:: console

   pwm example

   >> Test force PWM output on P0 and P1
   Output high
   Output low

   >> Generate edge aligned waveform
   Two waveforms will be generated, PWM P0 is the target waveform
   whose duty cycle will be updated from 0 - 100 and back to 0; PWM P1 is a reference

   >> Generate central aligned waveform
   Two waveforms will be generated, PWM P0 is the target waveform
   whose duty cycle will be updated from 0 - 100 and back to 0; PWM P1 is a reference

   >> Generate central aligned waveform in pair
   Two waveforms will be generated in pair, PWM P0 and P1 are target
   waveforms whose duty cycle will be updated from 0 - 100 and back to 0
   test done


.. note::

   Output the PWM waveform once, and if you observe the waveform again, you need to run the program again.