Assalamualaikum
Hari ini saya mau nulis tentang gmn caranya ngirim data melalui RS232 menggunakan bahasa C. Caranya sangat mudah sekaliiii....download dlu fungsinya di sini
Nah ini contoh kode yg saya buat :
#include <stdio.h>
#include"RS-232/rs232.h"
void pack(char packbuff[]){
unsigned char buff[255];
int i;
buff[0] = 0x10; //stx 2B
buff[1] = 0x02;
buff[2] = 0x01; //cmd 2B
buff[3] = 0x00;
buff[4] = 0x00; //SN 1B
buff[5] = 0x00; //RFU 2B
buff[6] = 0x00;
buff[7] = 0x00; //bno 2B
buff[8] = 0x00;
buff[9] = 0x00; //dlen 2B
buff[10] = 0x06;
buff[11] = 0x03; //data
buff[12] = 0x05;
buff[13] = 0x05;
buff[14] = 0x41;
buff[15] = 0x42;
buff[16] = 0x43;
buff[17] = 0x44; //LRC
buff[18] = 0x10; //ETX 2B
buff[19] = 0x03;
for(i = 0; i < 20; i++){
packbuff[i] = buff[i];
}
}
int main(){
int ret, size;
unsigned char sbuff[20];
unsigned char rbuff[255];
/* OPEN COM PORT */
ret = OpenComport(16, 38400);
if (ret != 0){
printf("FAIL OPEN COM PORT\n");
goto lbl_END;
}
pack(sbuff);
/* SEND DATA */
ret = SendBuf(16, sbuff, 20);
if (ret < 0){
printf("FAIL SEND DATA\n");
goto lbl_END;
}
ret = PollComport(16, rbuff, size);
printf("size %d\n", strlen(rbuff));
/* Close COM PORT */
CloseComport(16);
lbl_END:
return 0;
}
Kalau diliat kodenya sangat mudah bukan, waktu itu saya coba gunakan untuk ngirim data dari PC ke PC. Kalau kurang lengkap bisa liat di sini, Oh iya saya juga sudah tulis di web linux jakarta
Sekian dari saya
Wassalamuaalikum
