Hey. Would anyone please help me explain this C code? I found it in the internet and im using it on a project, but it seems too complicated for me because i studied C++, and not C. Thank you all :) This is the C code: #include <reg52.h> #include <stdio.h> void timer0int(void); char *Puts(char* str); float read_temp1(void); float read_temp1_filter(void); char cputick; char buffer[24]; char pulseE; char timer3; char temp; char vout; int x1,x2,x3,x4,x5; sbit RS=P1^6; sbit E =P1^4; sbit RW=P1^5; sbit CLK=P1^2; sbit Data=P1^1; sbit CS=P1^3; sbit CHG=P3^0; int readADC(char n) { int k; char i,channel; k=0; CS=0; if(n==0) channel= 0x0d; else channel=0x0f; for (i=0;i<4;i++) { CLK = 0; if(channel&8) Data =1; else Data = 0; CLK =1; channel <<=1; } Data = 1; CLK =0; for(i=0; i<12;i++) { k<<=1; CLK =1; CLK=0; if(Data) k|=1; else k &=~1; } CS =1; return k&=0xfff; } void timer0int(void) interrupt 1 using 1 { TH0 |=0xdc; cputick++; } pause(int j) { int i; for (i=0;i<j;i++) continue; } pulesE() { E =1; ; E =0; } void delay(int m) { int j; for(j=0;j<=m;j++) continue; } LCDWI (char n) { RW =0; RS=0; E =0; P0=n; E =1; E =0; pause(50); } LCDWD(char n) { RW=0; RS=1; E=0; P0=n; E=1; E=0; pause(50); } print_LCD(char a,char *s) { LCDWI(a); while(*s != 0) LCDWD(*s++); } i_LCD() { RS=0; E=0; P0=0x30;pulesE();delay(10);pulesE();delay(1);pulesE();delay(1); P0=0x20;pulesE();pulesE();pulesE(); LCDWI(0x38); LCDWI(0x0c); LCDWI(0x06); LCDWI(1); delay(50); } print_ADC() { char buffer[20]; if(++timer3<50) { timer3=0; sprintf(buffer,"%0.1fC %0.1fF",read_temp1_filter(),read_temp1_filter()*9/5+32); print_LCD(0xc0,buffer); } } int low_pass_filter1(void) { x5=x4; x4=x3; x3=x2; x2=x1; x1=readADC(0); return(x1+x2+x3+x4+x5)/5; } float read_temp1_filter(void) { return(0.0323*low_pass_filter1()-15.615); } void main() { i_LCD(); print_LCD(0x80,"LCD Thermometer"); TMOD |= 0x01; TR0 = 1; cputick = 0; EA = 1; ET0 = 1; for(;;) { while(!TF0) continue; TF0=0; print_ADC(); } }

I don't do C either, but here's a link that may help you. http://www.le.ac.uk/cc/tutorials/c/ Here's another that deals with C and C++ http://www.cprogramming.com/tutoria... Good luck

Without any sort of context, I'd say this code displays a temperature in both Celsius and Fahrenheit on some LCD screen whenever TFO (which I assume is some sort of registrar) is not 0. What exactly do you need help with?

I need help explaining this program, its functions and declarations. I took C++ but we never actually learned anything like this, and I need this program :S:S I would be more than grateful if you could help me. Thanks

If you knew C++ thoroughly, you would already know C. The code you posted includes a header that is not part of standard C. It is part of some real-time system or third-party library. You will need to read this library's/system's user manual in order to understand what its functions do. If you know C++ you should already fully understand what the bitwise arithmetic operators &, &= and ^ do.