| #include <stdio.h> | |
| #include <errno.h> | |
| #include <string.h> | |
| #include <wiringPi.h> | |
| #include <softTone.h> | |
| #define RANGE 100 | |
| #define NUM_LEDS 12 | |
| int scale [8] = { 262, 294, 330, 349, 392, 440, 494, 525 } ; | |
| int main () | |
| { | |
| int i, j ; | |
| char buf [80] ; | |
| if (wiringPiSetup () == -1) | |
| { | |
| fprintf (stdout, "oops: %s\n", strerror (errno)) ; | |
| return 1 ; | |
| } | |
| softToneCreate (3) ; | |
| for (;;) | |
| { | |
| for (i = 0 ; i < 8 ; ++i) | |
| { | |
| printf ("%3d\n", i) ; | |
| softToneWrite (3, scale [i]) ; | |
| delay (500) ; | |
| } | |
| } | |
| } |