Program is for an Arduino 1. Add the letters “A”, “b”, “c”, “d”, “E”, “F” to...
Program is for an Arduino
1. Add the letters “A”, “b”, “c”, “d”, “E”, “F” to your homework program. Continually display “0123”, “4567”, “89Ab”, “cdEF” with a one second delay between each one.
HINT: Expand pickNumber() to use numbers 10-15 (a-f in hex). Create new functions for a-f.
(THIS IS THE CODE FROM THE HOMEWORK)
/***************************************
name:Stopwatch
function: you can see the number increases by one per second on the
4-digit 7-segment display.
***********************************/
//Email:[email protected]
//Website:www.sunfounder.com
/**************************************/
#include
//the pins of 4-digit 7-segment display attach to pin2-13
respectively
int a = 2;
int b = 3;
int c = 4;
int d = 5;
int e = 6;
int f = 7;
int g = 8;
int p = 9;
int d4 = 10;
int d3 = 11;
int d2 = 12;
int d1 = 13;
long n = 0;// n represents the value displayed on the LED
display. For example, when n=0, 0000 is displayed. The maximum
value is 9999.
int x = 100;
int del = 5;//Set del as 5; the value is the degree of fine tuning
for the clock
int count = 0;//Set count=0. Here count is a count value that
increases by 1 every 0.1 second, which means 1 second is counted
when the value is 10
void setup()
{
//set all the pins of the LED display as output
pinMode(d1, OUTPUT);
pinMode(d2, OUTPUT);
pinMode(d3, OUTPUT);
pinMode(d4, OUTPUT);
pinMode(a, OUTPUT);
pinMode(b, OUTPUT);
pinMode(c, OUTPUT);
pinMode(d, OUTPUT);
pinMode(e, OUTPUT);
pinMode(f, OUTPUT);
pinMode(g, OUTPUT);
pinMode(p, OUTPUT);
Timer1.initialize(100000); // set a timer of length 100000
microseconds (or 0.1 sec - or 10Hz => the led will blink 5
times, 5 cycles of on-and-off, per second)
Timer1.attachInterrupt( add ); // attach the service routine
here
}
/***************************************/
void loop()
{
clearLEDs();//clear the 7-segment display screen
pickDigit(0);//Light up 7-segment display d1
pickNumber((n/1000));// get the value of thousand
delay(del);//delay 5ms
clearLEDs();//clear the 7-segment display screen
pickDigit(1);//Light up 7-segment display d2
pickNumber((n%1000)/100);// get the value of hundred
delay(del);//delay 5ms
clearLEDs();//clear the 7-segment display screen
pickDigit(2);//Light up 7-segment display d3
pickNumber(n%100/10);//get the value of ten
delay(del);//delay 5ms
clearLEDs();//clear the 7-segment display screen
pickDigit(3);//Light up 7-segment display d4
pickNumber(n%10);//Get the value of single digit
delay(del);//delay 5ms
}
/**************************************/
void pickDigit(int x) //light up a 7-segment display
{
//The 7-segment LED display is a common-cathode one. So also use
digitalWrite to set d1 as high and the LED will go out
digitalWrite(d1, HIGH);
digitalWrite(d2, HIGH);
digitalWrite(d3, HIGH);
digitalWrite(d4, HIGH);
switch(x)
{
case 0:
digitalWrite(d1, LOW);//Light d1 up
break;
case 1:
digitalWrite(d2, LOW); //Light d2 up
break;
case 2:
digitalWrite(d3, LOW); //Light d3 up
break;
default:
digitalWrite(d4, LOW); //Light d4 up
break;
}
}
//The function is to control the 7-segment LED display to display
numbers. Here x is the number to be displayed. It is an integer
from 0 to 9
void pickNumber(int x)
{
switch(x)
{
default:
zero();
break;
case 1:
one();
break;
case 2:
two();
break;
case 3:
three();
break;
case 4:
four();
break;
case 5:
five();
break;
case 6:
six();
break;
case 7:
seven();
break;
case 8:
eight();
break;
case 9:
nine();
break;
}
}
void clearLEDs() //clear the 7-segment display screen
{
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
digitalWrite(p, LOW);
}
void zero() //the 7-segment led display 0
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, HIGH);
digitalWrite(g, LOW);
}
void one() //the 7-segment led display 1
{
digitalWrite(a, LOW);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
}
void two() //the 7-segment led display 2
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, LOW);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, LOW);
digitalWrite(g, HIGH);
}
void three() //the 7-segment led display 3
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, HIGH);
}
void four() //the 7-segment led display 4
{
digitalWrite(a, LOW);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
void five() //the 7-segment led display 5
{
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, LOW);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
void six() //the 7-segment led display 6
{
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
void seven() //the 7-segment led display 7
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
}
void eight() //the 7-segment led display 8
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
void nine() //the 7-segment led display 9
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, LOW);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
/*******************************************/
void add()
{
// Toggle LED
count ++;
if(count == 10)
{
count = 0;
n++;
if(n == 10000)
{
n = 0;
}
}
}
Homework Answers
#include
int a = 2;
int b = 3;
int c = 4;
int d = 5;
int e = 6;
int f = 7;
int g = 8;
int p = 9;
int d4 = 10;
int d3 = 11;
int d2 = 12;
int d1 = 13;
long n = 0;// n represents the value displayed on the LED
display. For example, when n=0, 0000 is displayed. The maximum
value is 9999.
int x = 100;
int del = 5;//Set del as 5; the value is the degree of fine tuning
for the clock
int count = 0;//Set count=0. Here count is a count value that
increases by 1 every 0.1 second, which means 1 second is counted
when the value is 10
void setup()
{
//set all the pins of the LED display as output
pinMode(d1, OUTPUT);
pinMode(d2, OUTPUT);
pinMode(d3, OUTPUT);
pinMode(d4, OUTPUT);
pinMode(a, OUTPUT);
pinMode(b, OUTPUT);
pinMode(c, OUTPUT);
pinMode(d, OUTPUT);
pinMode(e, OUTPUT);
pinMode(f, OUTPUT);
pinMode(g, OUTPUT);
pinMode(p, OUTPUT);
Timer1.initialize(100000); // set a timer of length 100000
microseconds (or 0.1 sec - or 10Hz => the led will blink 5
times, 5 cycles of on-and-off, per second)
Timer1.attachInterrupt( add ); // attach the service routine
here
}
/***************************************/
void loop()
{
clearLEDs();//clear the 7-segment display screen
pickDigit(0);//Light up 7-segment display d1
pickNumber((n/1000));// get the value of thousand
delay(del);//delay 5ms
clearLEDs();//clear the 7-segment display screen
pickDigit(1);//Light up 7-segment display d2
pickNumber((n%1000)/100);// get the value of hundred
delay(del);//delay 5ms
clearLEDs();//clear the 7-segment display screen
pickDigit(2);//Light up 7-segment display d3
pickNumber(n%100/10);//get the value of ten
delay(del);//delay 5ms
clearLEDs();//clear the 7-segment display screen
pickDigit(3);//Light up 7-segment display d4
pickNumber(n%10);//Get the value of single digit
delay(del);//delay 5ms
}
/**************************************/
void pickDigit(int x) //light up a 7-segment display
{
//The 7-segment LED display is a common-cathode one. So also use
digitalWrite to set d1 as high and the LED will go out
digitalWrite(d1, HIGH);
digitalWrite(d2, HIGH);
digitalWrite(d3, HIGH);
digitalWrite(d4, HIGH);
switch(x)
{
case 0:
digitalWrite(d1, LOW);//Light d1 up
break;
case 1:
digitalWrite(d2, LOW); //Light d2 up
break;
case 2:
digitalWrite(d3, LOW); //Light d3 up
break;
default:
digitalWrite(d4, LOW); //Light d4 up
break;
}
}
//The function is to control the 7-segment LED display to display
numbers. Here x is the number to be displayed. It is an integer
from 0 to 9
void pickNumber(int x)
{
switch(x)
{
default:
zero();
break;
case 1:
one();
break;
case 2:
two();
break;
case 3:
three();
break;
case 4:
four();
break;
case 5:
five();
break;
case 6:
six();
break;
case 7:
seven();
break;
case 8:
eight();
break;
case 9:
nine();
break;
}
}
void clearLEDs() //clear the 7-segment display screen
{
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
digitalWrite(p, LOW);
}
void zero() //the 7-segment led display 0
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, HIGH);
digitalWrite(g, LOW);
}
void one() //the 7-segment led display 1
{
digitalWrite(a, LOW);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
}
void two() //the 7-segment led display 2
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, LOW);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, LOW);
digitalWrite(g, HIGH);
}
void three() //the 7-segment led display 3
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, HIGH);
}
void four() //the 7-segment led display 4
{
digitalWrite(a, LOW);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
void five() //the 7-segment led display 5
{
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, LOW);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
void six() //the 7-segment led display 6
{
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
void seven() //the 7-segment led display 7
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
}
void eight() //the 7-segment led display 8
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
void nine() //the 7-segment led display 9
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, HIGH);
digitalWrite(e, LOW);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
}
/*******************************************/
void add()
{
// Toggle LED
count ++;
if(count == 10)
{
count = 0;
n++;
if(n == 10000)
{
n = 0;
}
}
}
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// Longer, more obvious example for Arduino 7 segment
display
//
http://www.hacktronics.com/Tutorials/arduino-and-7-segment-led.html
// License: http://www.opensource.org/licenses/mit-license.php (Go
crazy)
void setup() {
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//
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void setup() {
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pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
digitalWrite(9, 0); // start with the "dot" off
}
void loop() {
{
// write '9'
digitalWrite(2, 1);
digitalWrite(3, 1);
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};
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