We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
i need help. i get this source code
#include <at89x51.h> #include <delay.h> #define usi P3_2 // ultrasonic in #define uso P3_3 // ultrasonic out
unsigned char i; bit x;
at 0x90 sbit md1; // left at 0x91 sbit me1; // at 0x92 sbit md2; // right at 0x93 sbit me2; //
void cek_jarak() { TH0 = 0x00; TL0 = 0x00; TF0 = 0; TF1 = 0; usi = 1; TR1 = 1; while(!TF1); TR1 = 0; usi = 0; while(!uso); TR0 = 1; while(uso); TR0 = 0; }
void perjalanan(bit a, bit b, bit c, bit d) {me1= a; me2= b; md1= c; md2= d;}
void main() { TMOD = 0x21 ; TCON = 0x00 ; TH1 = 100; while(1) { cek_jarak(); if(TH0 > 0x00) perjalanan(0,0,1,1);// forward else { perjalanan(0,0,0,0);// backward for(i=0; i<100; i++)delay(6000); perjalanan(0,0,x,~x);// turn right/left for(i=0; i<100; i++)delay(6000); } x = ~x; } }
but i cannot compile it. can anybody help?
The manual for the compiler you are using - Keil I pressume - does describe how you declare bit variables. That should help you to modify the code until it gets accepted by your compiler.
What do you call a library? A precompiled image linked with your application? In that case, it only works if you are using the same compiler as the library was built with.
Or do you talk about a source code package that you compile and link with your project? In that case, the source code will probably also contain declarations that needs to be modified to be compatible with the compiler you are using.
i'm so sorry.. it's not library that i mean.. it's the headers.. so sorry.. i'm new in this stuff, that's why i tried to learn.. i'm indonesian and in my area there's nobody studied about microcontroller and their stuff.. so i can't ask for advice anywhere here.. hope you don't mind sharing some of your knowledge..