sent.c

用于计算一个很长的式子

/*****************************************************************************/
/*功能：进行串口通信。可以通过串口接收和发送文件。                           */
/*作者：李士伟                                                               */
/*版权：cfix软件小组                                                         */
/*开发时间：2008.4.20-2008                                                     */
/*****************************************************************************/


/************************** main.h********************************************/
#include<stdio.h>

unsigned char Com2_In();
unsigned char Com2_Out(unsigned char ch);
/************************** end main.h ***************************************/

/************************** comx.c *******************************************/
unsigned char Com2_In()
{
    unsigned char ch;

        asm mov  ax,3fdh
testate:asm in   al,dx
        asm test al,01h
        asm je   testate
        asm mov  dx,3f8h
        asm in   al,dx
        asm mov  ch,al

    return ch;
}
unsigned char Com2_Out(unsigned char ch)
{

         asm mov  dx,3fdh
testate1:asm in  al,dx
         asm test al,20h
         asm je   testate1
         asm mov  al,ch
         asm mov  dx,3f8h
         asm out  dx,al

    return ch;
}
/************************* end comx.c ****************************************/
/************************* transfersfile.c ***********************************/
int SentFile(char *outfile)
{
    FILE *ptroutfile;
    ptroutfile=fopen(outfile,"rb");
    if(ptroutfile==NULL)
    {
        printf("File sent error!\n");
        getch();
        exit(1);
    }
    printf("transfering......");
    while(!feof(ptroutfile))
        printf("%c",Com2_Out(fgetc(ptroutfile)));
    Com2_Out(0);
    printf("\nok!");
    return 1;

}
int ReceiveFile(char *infile)
{
    unsigned char ch;
    FILE *ptrinfile;
    ptrinfile=fopen(infile,"wb");
    if(ptrinfile==NULL)
    {
        printf("Receive file error!\n");
        getch();
        exit(1);
    }
    printf("transfering......");
    while((ch=Com2_In())!=0)
    {
        printf("%c",ch);
        fputc(ch,ptrinfile);
    }
    printf("\nok!");
    return 1;
}
/************************ main.c *********************************************/
void main(int argc,char *argv[])
{
    char c;
    char filename[40];
    if(argc!=3)
    {
        ShowInfo();
        c=getch();
        putchar(c);
        if(c=='1')
        {
            printf("\nplease enter sent file name:");
            gets(filename);
            SentFile(filename);
        }
        else if(c=='2')
        {
            printf("\nplease enter save file name:");
            gets(filename);
            ReceiveFile(filename);
        }
        else
            exit(0);
    }
}
int ShowInfo()
{
        printf("\t\t   **********************************\n");
        printf("\t\t   *   file transfer 1.0 edition    *\n");
        printf("\t\t   *        author:lishiwei         *\n");
        printf("\t\t   *          cfixsoft              *\n");
        printf("\t\t   **********************************\n");
        printf("\t\t   [1]sent file\n");
        printf("\t\t   [2]receive file\n");
        printf("\t\t   [3]exit\n");
        printf("\t\t   please enter a choose [ ]\b\b");
        return 1;
}
/********************** end main.c *******************************************/