hlpd/curso_arduino/fuentes/caf0020403

/*
 * Print "HOLA" into 7 segment array display
 *
 * (c) 2010 Alberto Medrano (alberto@cenditel.gob.ve)
 * CENDITEL Foundation
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/


int potPin = 0; // select the input pin for the potentiometer
int val = 0;

int common_0 = 12;
int common_1 = 11;
int common_2 = 10;
int common_3 = 9;
int bcd_A = 8;
int bcd_B = 7;
int bcd_C = 6;
int bcd_D = 5;
int bcd_E = 4;
int bcd_F = 3;
int bcd_G = 2;

void setup() {
  pinMode(common_0, OUTPUT); // Declarando Salidas
  pinMode(common_1, OUTPUT); // Declarando Salidas
  pinMode(common_2, OUTPUT); // Declarando Salidas
  pinMode(common_3, OUTPUT); // Declarando Salidas
  pinMode(bcd_A, OUTPUT); // Declarando Salidas
  pinMode(bcd_B, OUTPUT); // Declarando Salidas
  pinMode(bcd_C, OUTPUT); // Declarando Salidas
  pinMode(bcd_D, OUTPUT); // Declarando Salidas
  pinMode(bcd_E, OUTPUT); // Declarando Salidas
  pinMode(bcd_F, OUTPUT); // Declarando Salidas
  pinMode(bcd_G, OUTPUT); // Declarando Salidas

  digitalWrite(common_0, LOW);
  digitalWrite(common_1, LOW);
  digitalWrite(common_2, LOW);
  digitalWrite(common_3, LOW);
}

void loop() {
  val = analogRead(potPin); // read the value from potentiometer
  digitalWrite(bcd_A, LOW); // H
  digitalWrite(bcd_B, HIGH);
  digitalWrite(bcd_C, HIGH);
  digitalWrite(bcd_D, LOW);
  digitalWrite(bcd_E, HIGH);
  digitalWrite(bcd_F, HIGH);
  digitalWrite(bcd_G, HIGH);
  digitalWrite(common_0, HIGH);
  delay(val);
  digitalWrite(common_0, LOW);

  val = analogRead(potPin); // read the value from potentiometer
  digitalWrite(bcd_A, HIGH); // O
  digitalWrite(bcd_B, HIGH);
  digitalWrite(bcd_C, HIGH);
  digitalWrite(bcd_D, HIGH);
  digitalWrite(bcd_E, HIGH);
  digitalWrite(bcd_F, HIGH);
  digitalWrite(bcd_G, LOW);
  digitalWrite(common_1, HIGH);
  delay(val);
  digitalWrite(common_1, LOW);

  val = analogRead(potPin); // read the value from potentiometer
  digitalWrite(bcd_A, LOW); // L
  digitalWrite(bcd_B, LOW);
  digitalWrite(bcd_C, LOW);
  digitalWrite(bcd_D, HIGH);
  digitalWrite(bcd_E, HIGH);
  digitalWrite(bcd_F, HIGH);
  digitalWrite(bcd_G, LOW);
  digitalWrite(common_2, HIGH);
  delay(val);
  digitalWrite(common_2, LOW);

  val = analogRead(potPin); // read the value from potentiometer
  digitalWrite(bcd_A, HIGH); // A
  digitalWrite(bcd_B, HIGH);
  digitalWrite(bcd_C, HIGH);
  digitalWrite(bcd_D, LOW);
  digitalWrite(bcd_E, HIGH);
  digitalWrite(bcd_F, HIGH);
  digitalWrite(bcd_G, HIGH);
  digitalWrite(common_3, HIGH);
  delay(val);
  digitalWrite(common_3, LOW);
}