Hello guys, i have been working on a project which is a parking lot that can get up to 30 cars. It has a counter that counts the car entering and leaving the parking, then displays the available space to a 2digit 7 segment led. My problem is that while everything works fine until the number 9, then i cant display the 2digit numbers. Probably is my code, so i need some ideas..
#include <Servo.h>
Servo myservo; // create servo object to control a servo
#define ServoM 12 //Connected to the servo motor.
#define Bright 11 //servo library disable PWM on pins 9 and 10.
#define CA1 11
#define CA2 10
#define Exit 9 //Pin connected to the EXIT button.
#define In 8 //Pin connected to the IN button.
#define BarLow 177 //Low position of the barrier.
#define BarUp 95 //Up position of the barrier.
#define CAPACITY 30 //Capacity of the parking lot.
#define INTEN 80 //Display intensity %
//Pins conections to segments (cathodes).
#define segA 0
#define segB 1
#define segC 2
#define segD 3
#define segE 4
#define segF 5
#define segG 6
//Array with the segments to represent the decimal numbers (0-9).
byte segments[10] = {
// pgfedcba <--- segments
B00111111, // number 0
B00000110, // number 1
B01011011, // number 2
B01001111, // number 3
B01100110, // number 4
B01101101, // number 5
B01111101, // number 6
B00000111, // number 7
B01111111, // number 8
B01101111 // number 9
};
void setup(){
myservo.attach(ServoM); // attaches the servo.
pinMode(Exit, INPUT); // set "EXIT" button pin to input
pinMode(In, INPUT); // set "IN" button pin to input
digitalWrite(Exit, HIGH); // Connect Pull-Up resistor.
digitalWrite(In, HIGH); // Connect Pull-Up resistor.
pinMode(segA,OUTPUT);
pinMode(segB,OUTPUT);
pinMode(segC,OUTPUT);
pinMode(segD,OUTPUT);
pinMode(segE,OUTPUT);
pinMode(segF,OUTPUT);
pinMode(segG,OUTPUT);
pinMode(CA1,OUTPUT);
pinMode(CA2,OUTPUT);
analogWrite(Bright,255*INTEN/100);
myservo.write(BarLow); //Barrier in the low position
// delay(1000);
}
int Available= 30; // Number of places available.
//================================================================
void loop(){
Display(Available);
if(digitalRead(In)==0)
{
if(Available != 0){
Available--;
myservo.write(BarUp);
delay(3000);
myservo.write(BarLow);
}
}
if(digitalRead(Exit)==0)
{
if(Available != CAPACITY){
Available++;
myservo.write(BarUp);
delay(3000);
myservo.write(BarLow);
}
}
}
/*-------------------------------------------------------------------
Put the segments according to the number.
--------------------------------------------------------------------*/
void Display(int number){
byte segs = segments[number];
if (Available <= 9) {
digitalWrite(CA1,LOW);
digitalWrite(CA2,HIGH);
digitalWrite(segA, bitRead(segs, 0) );
digitalWrite(segB, bitRead(segs, 1) );
digitalWrite(segC, bitRead(segs, 2) );
digitalWrite(segD, bitRead(segs, 3) );
digitalWrite(segE, bitRead(segs, 4) );
digitalWrite(segF, bitRead(segs, 5) );
digitalWrite(segG, bitRead(segs, 6) );
}
if(Available > 9){
digitalWrite(CA1,HIGH);
digitalWrite(CA2,HIGH);
digitalWrite(segA, bitRead(segs, 0) );
digitalWrite(segB, bitRead(segs, 1) );
digitalWrite(segC, bitRead(segs, 2) );
digitalWrite(segD, bitRead(segs, 3) );
digitalWrite(segE, bitRead(segs, 4) );
digitalWrite(segF, bitRead(segs, 5) );
digitalWrite(segG, bitRead(segs, 6) );
}
}
cant find out what loop needs in the diplay function..
