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- /*
- * Divya Inaganti
- * June 22, 2017
- * LED latch BAR backwards
- */
- const int SER = 8;
- const int LATCH = 9;
- const int CLK = 10;
- int lights[9]= {0, 1, 2, 4, 16, 32, 64, 128};
- int bar[17]= {0, 1, 3, 7, 15, 31, 63, 127, 255, 127, 63, 31, 15, 7, 3, 1, 0};
- void setup()
- {
- pinMode(SER, OUTPUT);
- pinMode(LATCH, OUTPUT);
- pinMode(CLK, OUTPUT);
- digitalWrite(LATCH, LOW);
- shiftOut(SER, CLK, MSBFIRST, B00000000);
- digitalWrite(LATCH, HIGH);
- delay(200);
- digitalWrite(LATCH, LOW);
- shiftOut(SER, CLK, MSBFIRST, B11111111);
- digitalWrite(LATCH, HIGH);
- delay(200);
- digitalWrite(LATCH, LOW);
- shiftOut(SER, CLK, MSBFIRST, B00000000);
- digitalWrite(LATCH, HIGH);
- }
- void loop()
- {
- for (int i= 0; i<9; i ++)
- {
- digitalWrite(LATCH, LOW);
- shiftOut (SER, CLK, MSBFIRST, lights[i]);
- digitalWrite(LATCH, HIGH);
- delay(100);
- }
- {
- for (int j= 0; j<17; j ++)
- {
- digitalWrite(LATCH, LOW);
- shiftOut (SER, CLK, MSBFIRST, bar[j]);
- digitalWrite(LATCH, HIGH);
- delay(100);
- }
- }
- }
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