![digitalWrite(latchPin,HIGH); //restore to high TTL back
//========================================
delayMicroseconds(100);
}
//this is the display number function
void showNum(double number)
// use double instead of int, int is not longer enough
{
long num = number;
int ShowDec [8];
for (int x = 1; x < 9; x++)
{
ShowDec [x] = 0;
}
//creat the array for decimal point, 0 is not to display, 1 is to display
if (num < 10000000){
if (num < 1000000){num = number*100; ShowDec[6]=1;ShowDec[7]=0;}
else{
num = number*10; ShowDec[7]=1;
}
}
//simple decimal point for two number display
int ShowNumber [8];
ShowNumber[1] = (num/10000000)%10;
ShowNumber[2]= (num/1000000)%10;](https://image.slidesharecdn.com/7segmentscetch-140828214505-phpapp01/85/7segment-scetch-3-320.jpg)
![ShowNumber[3] = (num/100000)%10;
ShowNumber[4] = (num/10000)%10;
ShowNumber[5] = (num/1000)%10;
ShowNumber[6] = (num/100)%10;
ShowNumber[7] = (num/10)%10;
ShowNumber[8]= (num/1)%10;
//get every number and store in the arrary
int dectest = 0;
for (int x = 1; x<8; x++)
{
if ((dectest == 0)and(ShowNumber[x] == 0))
{
ShowNumber[x] = 11;
}
else
{
dectest = 1;
}
}
//check if there is a "0" on the left front, if yes we ignore it
disNum(ShowNumber[1],1,ShowDec[1]);
disNum(ShowNumber[2],2,ShowDec[2]);
disNum(ShowNumber[3],3,ShowDec[3]);
disNum(ShowNumber[4],4,ShowDec[4]);](https://image.slidesharecdn.com/7segmentscetch-140828214505-phpapp01/85/7segment-scetch-4-320.jpg)
![disNum(ShowNumber[5],5,ShowDec[5]);
disNum(ShowNumber[6],6,ShowDec[6]);
disNum(ShowNumber[7],7,ShowDec[7]);
disNum(ShowNumber[8],8,ShowDec[8]);
//display number in sequency, flashing fast
}
void loop()
{
showNum(80600000);//simple function to display to number
}](https://image.slidesharecdn.com/7segmentscetch-140828214505-phpapp01/85/7segment-scetch-5-320.jpg)
7segment scetch
- 1. int latchPin = 13;//ST_CP int clockPin = 12;//SH_CP int dataPin = 11; //DS // define latch, clock and datapin void setup () { pinMode(latchPin,OUTPUT); pinMode(clockPin,OUTPUT); pinMode(dataPin,OUTPUT); //set these three pins to output } //Display function (display word, display position, display if have //decimal point) void disNum(int Num_Qua, int Num_Pos, int Num_Dec) { int Num_Qua_B = 0; int Num_Pos_B = 0; switch (Num_Qua) { case 0:Num_Qua_B = 192;break; case 1:Num_Qua_B = 249;break; case 2:Num_Qua_B = 164;break; case 3:Num_Qua_B = 176;break; case 4:Num_Qua_B = 153;break; case 5:Num_Qua_B = 146;break; case 6:Num_Qua_B = 130;break; case 7:Num_Qua_B = 248;break;
- 2. case 8:Num_Qua_B = 128;break; case 9:Num_Qua_B = 144;break; default: Num_Qua_B = 255;break; }; //this value convert to binary, which is adcdefg need to light up switch (Num_Pos) { case 1:Num_Pos_B = 1;break; case 2:Num_Pos_B = 2;break; case 3:Num_Pos_B = 4;break; case 4:Num_Pos_B = 8;break; case 5:Num_Pos_B = 16;break; case 6:Num_Pos_B = 32;break; case 7:Num_Pos_B = 64;break; case 8:Num_Pos_B = 128;break; default: Num_Pos_B = 0;break; }; //this value convert to binary, which is the one light up now. if (Num_Dec == 1) { Num_Qua_B = Num_Qua_B + 128; }; //======================================== digitalWrite(latchPin,LOW); // set latch to low tolet the display ready to receive data int L = Num_Qua_B; int R = Num_Pos_B; shiftOut(dataPin,clockPin,MSBFIRST,R); shiftOut(dataPin,clockPin,MSBFIRST,L);
- 3. digitalWrite(latchPin,HIGH); //restore to high TTL back //======================================== delayMicroseconds(100); } //this is the display number function void showNum(double number) // use double instead of int, int is not longer enough { long num = number; int ShowDec [8]; for (int x = 1; x < 9; x++) { ShowDec [x] = 0; } //creat the array for decimal point, 0 is not to display, 1 is to display if (num < 10000000){ if (num < 1000000){num = number*100; ShowDec[6]=1;ShowDec[7]=0;} else{ num = number*10; ShowDec[7]=1; } } //simple decimal point for two number display int ShowNumber [8]; ShowNumber[1] = (num/10000000)%10; ShowNumber[2]= (num/1000000)%10;
- 4. ShowNumber[3] = (num/100000)%10; ShowNumber[4] = (num/10000)%10; ShowNumber[5] = (num/1000)%10; ShowNumber[6] = (num/100)%10; ShowNumber[7] = (num/10)%10; ShowNumber[8]= (num/1)%10; //get every number and store in the arrary int dectest = 0; for (int x = 1; x<8; x++) { if ((dectest == 0)and(ShowNumber[x] == 0)) { ShowNumber[x] = 11; } else { dectest = 1; } } //check if there is a "0" on the left front, if yes we ignore it disNum(ShowNumber[1],1,ShowDec[1]); disNum(ShowNumber[2],2,ShowDec[2]); disNum(ShowNumber[3],3,ShowDec[3]); disNum(ShowNumber[4],4,ShowDec[4]);
- 5. disNum(ShowNumber[5],5,ShowDec[5]); disNum(ShowNumber[6],6,ShowDec[6]); disNum(ShowNumber[7],7,ShowDec[7]); disNum(ShowNumber[8],8,ShowDec[8]); //display number in sequency, flashing fast } void loop() { showNum(80600000);//simple function to display to number }