C51 COMPILER V6.00 FPGA                                                                    05/29/2001 18:52:39 PAGE 1   


C51 COMPILER 6.00, COMPILATION OF MODULE FPGA
OBJECT MODULE PLACED IN .\fpga.OBJ
COMPILER INVOKED BY: d:\app\keil\eval\C51\BIN\C51.EXE .\fpga.c BROWSE OBJECTEXTEND DEBUG

stmt level    source

   1          /* fpga.c */
   2          
   3          #include "door.h"
   4          #include "fpga.h"
   5          
   6          /* # of 25 ms before timeout */
   7          /* time out flag */
   8          static bit done = 0;
   9          static bit timeOut = 0;
  10          static bit runFPGA = 1;
  11          
  12          unsigned char subseconds = 0;
  13          unsigned char seconds = 0;
  14          
  15          char xdata *led = 0x0f000;  // the FPGA is configured to memory map led to this address
  16          
  17          void FPGA_Task() {
  18   1      	/* set timer */
  19   1      	PCON = PCON | 0x80;
  20   1      	TMOD = 0x21;
  21   1      
  22   1      	/* Set up and enable Timer0 for a 1 millisecond timer   */
  23   1      	TL0 = FPGA_RELOAD_LO_B;	/* Load the timer high and low bytes        */
  24   1      	TH0 = FPGA_RELOAD_HI_B;
  25   1      	EA = 1;				/* Enable the global interrupt  */
  26   1      	EX1 = 1;			/* Enable the external interrupt 1 */
  27   1      	IT0 = 1;			/* Enable the TCON for falling edge trigger */
  28   1      
  29   1      	runFPGA = 1;
  30   1      	done = 0;
  31   1      	timeOut = 0;
  32   1      //	T0 = 1; 			// Request = 1
  33   1      	T1 = 1; 			// p3.5: pin 22, inv(Request) = 1
  34   1      	TR0 = 1;			/* Start the timer 0             */
  35   1      	ET0 = 1;			/* Enable the timer interrupt 0 (Page 55) */
  36   1      	PT0 = 1;			/* Timer 0 Interrupt Priority */
  37   1      	IE0 = 0;
  38   1      	*led = 0x52;	// 7
  39   1      	while (runFPGA) {
  40   2      		if((done) || (timeOut))
  41   2      	 	{
  42   3      			*led = 0xFF; //8
  43   3      			ET0 = 0;			// disable timer interrupt 0
  44   3      			EX0 = 0;			// disable ext int 0
  45   3      			EX1 = 0;			// disable ext int 1
  46   3      			EA = 0;
  47   3      			T1 = 0;				// p3.5: pin 22, inv(Request) = 0
  48   3      			if(timeOut) 
  49   3      			{
  50   4      				*led = 0x7B;	//9
  51   4      				// reset FPGA;
  52   4      			}
  53   3      			state = DETECTING_USER;
  54   3      			runFPGA = 0;
  55   3      			//return;
C51 COMPILER V6.00 FPGA                                                                    05/29/2001 18:52:39 PAGE 2   

  56   3      		}
  57   2      	}
  58   1      }/* end FPGA_Task */
  59          void FPGA_Timer0_Handler() {
  60   1      	TL0 = TL0 + FPGA_RELOAD_LO_B ;   // Load the timer high and low bytes        
  61   1      	TH0 = FPGA_RELOAD_HI_B;
  62   1      	subseconds = subseconds + 1;
  63   1      
  64   1      	if (subseconds == 100) {      // and check for one/tenth-second rollover        
  65   2          	subseconds = 0;
  66   2          	seconds = seconds + 1;
  67   2      		if(seconds == 4)
  68   2      		{
  69   3      			timeOut = 1;
  70   3      			seconds = 0;
  71   3      		}
  72   2       	}	
  73   1      } /* end of FPGA_Timer0_Handler() */
  74          
  75          void FPGA_Ext1_Handler() {
  76   1      //*led = 0x5D;	//2
  77   1      	done = 1;
  78   1      	IE0 = 0;
  79   1      } /* end of FPGA_Ext1_Handler() */
  80          
  81          /*	
  82          	case 0:		value = 0x77; init =1;		break;
  83          	case 1:		value = 0x12;		break;
  84          	case 2:		value = 0x5D;		break;
  85          	case 3:		value = 0x5B;		break;
  86          	case 4:		value = 0x3A;		break;
  87          	case 5:		value = 0x6B;		break;
  88          	case 6:		value = 0x6F;		break;
  89          	case 7:		value = 0x52;		break;
  90          	case 8:		value = 0xFF; 		break;
  91          	default:		value = 0x7B;
  92          */
  93          
  94          
  95          
  96          
  97          
  98          
  99          
 100          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    122    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      4    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      3    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)