i need to be embedded C program which transmit the data on PC using RS232 continuously which is displayed on 7 segment LED. & this number is changes continuously & send to PC using RS232 via TxD & RxD signal.
Just i write the program in c Plz check it for that:
// Program to demonstrate the principle of digital clock. this digital clock displays two minute digits and two second digits#include<reg51.h>
sbit dig_ctrl_4=P1^0;//Declaring control pins of the seven segments
sbit dig_ctrl_3=P1^1;
sbit dig_ctrl_2=P1^2;
sbit dig_ctrl_1=P1^3;unsignedchar dig_disp=0;int min2;int min1;int sec2;int sec1;char digi_val[10]={0x40,0xF9,0x24,0x30,0x19,0x12,0x02,0xF8,0x00,0x10};void delay()//Function to provide a time delay of approx. 1 second. using Timer 1.{int i;for(i=0;i<20;i++){
TL1=0xFD;
TH1=0x4B;
TR1=1;while(TF1==0);
TR1=0;
TF1=0;}}void display()//Function to display the number using seven segmnet multiplexing. For more details refer seven segment multiplexing.{
TL0=0x36;//Reloading Timer0
TH0=0xf6;
P2=0xFF;
dig_ctrl_1 = dig_ctrl_3 = dig_ctrl_2 = dig_ctrl_4 =0;
dig_disp++;
dig_disp=dig_disp%4;switch(dig_disp){case0:
P2=digi_val[sec1];
dig_ctrl_1 =1;break;case1:
P2=digi_val[sec2];
dig_ctrl_2 =1;break;case2:
P2=digi_val[min1];
dig_ctrl_3 =1;break;case3:
P2=digi_val[min2];
dig_ctrl_4 =1;break;}}void ini()// Initialize Timer 1 for serial communication{
TMOD=0x20;//Timer1, mode 2, baud rate 9600 bps
TH1=0XFD;
SCON=0x50;
TR1=1;}void main(){
TMOD=0x20;//Intialize Timer 0
TL0=0x36;
TH0=0xF6;
IE=0x82;// Enable Timer 0 interrupt
TR0=1;//Start Timer 0while(1)//Start clock{
min2=min1=sec2=sec1=0;for(min2=0;min2<10;min2++){for(min1=0;min1<10;min1++){for(sec2=0;sec2<10;sec2++){for(sec1=0;sec1<10;sec1++){
display();
delay();
ini();
REN =0;// now disable reception
SBUF = P2;// start transmissionwhile(TI==0){}// wait until data transmitted
TI=0;// clear transmission flag }}}}}}