User:Amy Suo Wu/assignment 2: Difference between revisions
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<source | <source lang="bash"> | ||
int speakerPin = 13; | int speakerPin = 13; | ||
Revision as of 15:11, 30 October 2010
<source lang="bash">
int speakerPin = 13; int thedelay = 100; // delay=milli-second
char pat[] = "xxx xx x xx "; int patlen = strlen(pat); //strlen = string length
void setup() { }
int s = 0;
void loop () {
int i = 0;
int i2 = 0;
while (i<patlen) {
i2 = i+s;
if (i2 >= patlen) i2 = i2 - patlen;
// maybe the % modulo operator could help here!!!
if (pat[i] == 'x') tone(speakerPin, 400, 10);
delay(10);
if (pat[i2] == 'x') tone(speakerPin, 800, 10);
delay(thedelay);
i = i+1;
}
s = s+1;
if (s >= patlen) s = 0;
delay(thedelay*10);
}