diff options
| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | _3x3Matrix.pde | 60 |
2 files changed, 62 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..5ca0973 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +.DS_Store + diff --git a/_3x3Matrix.pde b/_3x3Matrix.pde new file mode 100644 index 0000000..6a2a147 --- /dev/null +++ b/_3x3Matrix.pde @@ -0,0 +1,60 @@ +/* + Blink + Turns on an LED on for one second, then off for one second, repeatedly. + + This example code is in the public domain. + */ +#define ROW 3 +#define COL 0 +#define ROWCNT 3 +#define COLCNT 3 + +#define DELAY 3 + +int frame[3][3] = { + {0, 0, 0}, + {0, 0, 0}, + {0, 0, 0}, +}; + +int framenr = 0; +int rownr = 0; +void setup() { + // initialize the digital pin as an output. + // Pin 13 has an LED connected on most Arduino boards: + int i; + for (i = 0;i < ROWCNT; i++) + pinMode(ROW + i, OUTPUT); + for (i = 0;i < COLCNT; i++) + pinMode(COL + i, OUTPUT); +} + +void nextFrame() { + frame[0][0] = (framenr % 100) < 50; + frame[0][1] = (framenr % 100) < 50; + frame[0][2] = (framenr % 100) < 50; + frame[1][0] = (framenr % 100) < 50; + frame[1][1] = (framenr % 100) >= 50; + frame[1][2] = (framenr % 100) < 50; + frame[2][0] = (framenr % 100) < 50; + frame[2][1] = (framenr % 100) < 50; + frame[2][2] = (framenr % 100) < 50; +} + +void loop() { + int i; + + rownr = ( rownr + 1 ) % ROWCNT; + + if (rownr == 0) { + framenr++; + nextFrame(); + } + + for (i = 0; i < COLCNT; i++) { + digitalWrite(COL + i, frame[rownr][i]); + } + digitalWrite(ROW + rownr, HIGH); + delay(DELAY); + digitalWrite(ROW + rownr, LOW); +} |