74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
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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 Kevin 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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#include <sys/ioctl.h>
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#include <termios.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 = 2,
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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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struct termios old;
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void set_unbuffered() {
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tcgetattr(fileno(stdin), &old);
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struct termios new = old;
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new.c_lflag &= (~ICANON & ~ECHO);
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tcsetattr(fileno(stdin), TCSAFLUSH, &new);
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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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set_unbuffered();
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char c;
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while (c = fgetc(stdin)) {
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switch (c) {
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case 'z': return 0;
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case 'a': note(10, 1308); break;
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case 'w': note(10, 1386); break;
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case 's': note(10, 1468); break;
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case 'e': note(10, 1556); break;
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case 'd': note(10, 1648); break;
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case 'f': note(10, 1746); break;
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case 't': note(10, 1850); break;
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case 'g': note(10, 1960); break;
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case 'y': note(10, 2077); break;
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case 'h': note(10, 2200); break;
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case 'u': note(10, 2331); break;
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case 'j': note(10, 2469); break;
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case 'k': note(10, 2616); break;
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case 'o': note(10, 2772); break;
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case 'l': note(10, 2937); break;
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case 'p': note(10, 3111); break;
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case ';': note(10, 3296); break;
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case '\'': note(10, 3492);break;
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}
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}
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return 0;
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}
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