/*
written by Jason Berger ,arduinoall, พ.ไพศาล
reedited by Phaisarn Te. @060614
8-Digit 7-Segment display driver.
2x 74HC595 wired to 2x 4-digit 7-segment displays
bits 0-7 select a digit
bits 8-14 A-G
*/
char disp_c[8] ;
//Pin assignments
const int SCLK_pin=4;
const int RCLK_pin=5;
const int DIO_pin =6;
// 0-9 --> use the 0-9
// 0.-9. --> use the 10-19
// space --> ' '
// A-Z, a-z --> 'A' 'B' ... 'a' 'b'
int disp[8];
//time values for delay workaround
unsigned long prev =0;
unsigned long waitMS=0;
void setup()
{
pinMode(RCLK_pin,OUTPUT);
pinMode(DIO_pin,OUTPUT);
pinMode(SCLK_pin,OUTPUT);
showText('O','P','E','N'); // Show welcome message
}
int n;
unsigned long start=millis();
byte b = 0;
void loop()
{
showDisplay();
if(b==0){
b++;
wait(3000); // Delay display a welcome message
}
else{
if ( millis() > (prev + waitMS))
{
//code to loop in here
//between loop Other fixed costs
// Display font displays. Ardu
// showText('A','r','d','u'); // The solution to this display.
// number Example display 95.42
// showText(9,15,4,2); //15 --> Show No. 5.
// Showing examples run เลข
showText((n/1000)%10,(n/100)%10+10,(n/10)%10,n%10); //solution to this display.
n++;
if(n>10000) {
n=0;
}
// delay
wait(1000);
}
}
}
void showText(char a, char b , char c,char d){
disp_c[0] = d;
disp_c[1] = c;
disp_c[2] = b;
disp_c[3] = a;
}
void showDisplay()
{
setDisp();
for(int i=0; i<8; i++)
{
setDigit(i,disp[i]);
}
}
void setDigit(int dig, int character)
{
int digits[]= {
128,64,32,16,8,4,2,1 };
//character set (0-9)0-9
// (10-19)0.-9.
// (20-45)A-Z
// (46-71)a-z
// (72)- (73) space
int characters[]= {
3,159,37,13,153,73,65,31,1,9,
2,158,36,12,152,72,64,30,0,8,
17,1,99,3,97,113,67,145,243,135,145,227,85,19,3,49,25,115,73,31,129,129,169,145,137,37,
5,193,229,133,33,113,9,209,247,143,81,227,85,213,197,49,25,245,73,225,199,199,169,145,137,37,
253,255 };
digitalWrite(RCLK_pin, LOW);
shiftOut(DIO_pin, SCLK_pin, LSBFIRST, characters[character]);
shiftOut(DIO_pin, SCLK_pin, LSBFIRST, digits[dig]);
digitalWrite(RCLK_pin, HIGH);
}
void setDisp()
{
for (int i=0; i<8;i++)
{
int val = disp_c[i];
if((val >= 32)&&(val <= 47)){ // To / not to show
switch (val){
case 45 :
val = 72;
break; //mark -
default :
val = 73;
break; //The other between this show.
}
}
else if((val >= 48)&&(val <= 57)) //0-9
{
val -= 48;
}
else if((val >= 65)&&(val <= 90)) //A-Z
{
val -= 45;
}
else if((val >= 97)&&(val <= 122)) //a-z
{
val -= 51;
}
disp[i] = val;
}
}
void wait( unsigned long milsec)
{
prev = millis();
waitMS = milsec;
}
