charlieplexing
This commit is contained in:
parent
3c2eba78f0
commit
d97a5aa793
4 changed files with 72 additions and 0 deletions
32
projekte/charlieplexing/sketch_may18a/sketch_may18a.pde
Normal file
32
projekte/charlieplexing/sketch_may18a/sketch_may18a.pde
Normal file
|
@ -0,0 +1,32 @@
|
|||
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);
|
||||
}
|
||||
}
|
Reference in a new issue