You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
33 lines
530 B
Plaintext
33 lines
530 B
Plaintext
15 years ago
|
const int pins[] = {2, 3, 4};
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
for(int p=0; p<=2; p++) {
|
||
|
|
pinMode(pins[p], INPUT);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const int charlieplexed[6][3] =
|
||
|
|
{
|
||
|
|
{ 1,0,-1},
|
||
|
|
{ 0,1,-1},
|
||
|
|
{-1,1, 0},
|
||
|
|
{-1,0, 1},
|
||
|
|
{1,-1, 0},
|
||
|
|
{0,-1, 1},
|
||
|
|
};
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
for(int i=0; i<=5; i++) {
|
||
|
|
// set pin tristate
|
||
|
|
for(int p=0; p<=2; p++) {
|
||
|
|
if (charlieplexed[i][p] == -1) {
|
||
|
|
pinMode(pins[p], INPUT);
|
||
|
|
} else {
|
||
|
|
pinMode(pins[p], OUTPUT);
|
||
|
|
digitalWrite(pins[p], charlieplexed[i][p]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
delay(200);
|
||
|
|
}
|
||
|
|
}
|