-- PWM output test using command line programs

-- Copyright (C)2021-2023, Philip Munts dba Munts Technologies.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are met:
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-- * Redistributions of source code must retain the above copyright notice,
--   this list of conditions and the following disclaimer.
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-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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WITH Ada.Text_IO; USE Ada.Text_IO;
WITH Ada.Integer_Text_IO; USE Ada.Integer_Text_IO;

WITH PWM.cli;

PROCEDURE test_pwm_cli IS

  freq : Positive;

  PWM0 : PWM.Output;

BEGIN
  Put_Line("PWM Output Test");
  New_Line;

  Put("Enter PWM pulse frequency: ");
  Get(freq);

  -- Create PWM output object

  PWM0 := PWM.CLI.Create("echo pwm_configure" & Positive'Image(freq),
    "echo pwm_write", freq);

  -- Sweep the pulse width back and forth

  FOR d IN 0 .. 100 LOOP
    PWM0.Put(PWM.DutyCycle(d));
    DELAY 0.05;
  END LOOP;

  FOR d IN REVERSE 0 .. 100 LOOP
    PWM0.Put(PWM.DutyCycle(d));
    DELAY 0.05;
  END LOOP;
END test_pwm_cli;