/*
   usb.c Test code for USB and GLCD expansion board for 8051SBC V1.0
   The usb board is FT245BM based.
   copyright 2003,2004 W.SIRICHOTE
*/

#include <8051io.h>  /* include i/o header file */
#include <8051reg.h>
#include <8051int.h>

#include "lcddrv.c"

char *usb_port;
char buffer,n;

#define GPIO2 (*((unsigned char *)0x0200))


// read byte from usb module, print on LCD

INTERRUPT(_IE0_) external0_interrupt()
             {
             buffer = *usb_port;
             putch_lcd(buffer);
}

main()
{
    usb_port = 0x0300;
    buffer = -1;
    n = 0;
    IE = 0x81;
    TCON |= 1; // negative going detection

    InitLcd();
    Puts("USB Testing");
   for(;;)
    {
    while(!(GPIO2&0x20))
     {
     while(P3&0x08)  
       ;    // wait until TXE low
      printf("\n%d",n);
      *usb_port = n++;
    }
    }
}