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49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2017 Intel Corporation.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include "speaker.h"
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int main ()
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{
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//! [Interesting]
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// Instantiate a Speaker (PWM) on digital pin D3
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speaker_context speaker = speaker_init_pwm(26);
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if (!speaker)
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{
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printf("speaker_init() failed\n");
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return 1;
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}
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// emit a series of frequencies for 500ms each
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speaker_emit(speaker, 50, 500);
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speaker_emit(speaker, 75, 500);
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speaker_emit(speaker, 125, 500);
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speaker_emit(speaker, 250, 500);
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speaker_emit(speaker, 500, 500);
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speaker_emit(speaker, 1000, 500);
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speaker_emit(speaker, 2000, 500);
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speaker_emit(speaker, 3000, 500);
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speaker_emit(speaker, 5000, 500);
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speaker_emit(speaker, 10000, 500);
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printf("Exiting\n");
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speaker_close(speaker);
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//! [Interesting]
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return 0;
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}
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