56 lines
983 B
C
56 lines
983 B
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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* This file is part of ToaruOS and is released under the terms
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* of the NCSA / University of Illinois License - see LICENSE.md
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* Copyright (C) 2014 K. Lange
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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int spkr = 0;
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struct spkr {
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int length;
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int frequency;
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};
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void note(int length, int frequency) {
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struct spkr s = {
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.length = length,
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.frequency = frequency,
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};
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write(spkr, &s, sizeof(s));
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}
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int main(int argc, char * argv[]) {
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spkr = open("/dev/spkr", O_WRONLY);
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if (spkr == -1) {
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fprintf(stderr, "%s: could not open speaker\n", argv[0]);
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}
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note(20, 15680);
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note(10, 11747);
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note(10, 12445);
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note(20, 13969);
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note(10, 12445);
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note(10, 11747);
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note(20, 10465);
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note(10, 10465);
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note(10, 12445);
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note(20, 15680);
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note(10, 13969);
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note(10, 12445);
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note(30, 11747);
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note(10, 12445);
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note(20, 13969);
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note(20, 15680);
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note(20, 12445);
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note(20, 10465);
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note(20, 10465);
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return 0;
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}
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