blinky.lst

C & Asm source code for cygnal microcontrollers C8051F2xx.

C51 COMPILER V6.14  BLINKY                                                                 12/06/2008 23:38:55 PAGE 1   


C51 COMPILER V6.14, COMPILATION OF MODULE BLINKY
OBJECT MODULE PLACED IN Blinky.OBJ
COMPILER INVOKED BY: C:\CYGNAL\IDEfiles\C51\BIN\C51.exe Blinky.c DB OE

stmt level    source

   1          //------------------------------------------------------------------------------------
   2          // Blinky.c
   3          //------------------------------------------------------------------------------------
   4          // Copyright 2001 Cygnal Integrated Products, Inc.
   5          //
   6          // AUTH: BW
   7          // DATE: 10 OCT 01
   8          //
   9          // This program flashes the green LED on the C8051F2xx target board about five times
  10          // a second using the interrupt handler for Timer2.
  11          //
  12          // Target: C8051F2xx
  13          //
  14          // Tool chain: KEIL Eval 'c'
  15          //
  16          
  17          //------------------------------------------------------------------------------------
  18          // Includes
  19          //------------------------------------------------------------------------------------
  20          #include <c8051f200.h>                    // SFR declarations
  21          
  22          //------------------------------------------------------------------------------------
  23          // 16-bit SFR Definitions for 'F2xx
  24          //------------------------------------------------------------------------------------
  25          
  26          sfr16 DP       = 0x82;                    // data pointer
  27          sfr16 ADC0     = 0xbe;                    // ADC0 data
  28          sfr16 ADC0GT   = 0xc4;                    // ADC0 greater than window
  29          sfr16 ADC0LT   = 0xc6;                    // ADC0 less than window
  30          sfr16 RCAP2    = 0xca;                    // Timer2 capture/reload
  31          sfr16 T2       = 0xcc;                    // Timer2
  32          
  33          //------------------------------------------------------------------------------------
  34          // Global CONSTANTS
  35          //------------------------------------------------------------------------------------
  36          
  37          #define SYSCLK 2000000                    // approximate SYSCLK frequency in Hz
  38          
  39          sbit  LED = P2^4;                         // green LED: '1' = ON; '0' = OFF
  40          
  41          //------------------------------------------------------------------------------------
  42          // Function PROTOTYPES
  43          //------------------------------------------------------------------------------------
  44          void PORT_Init (void);
  45          void Timer2_Init (int counts);
  46          void Timer2_ISR (void);
  47          
  48          //------------------------------------------------------------------------------------
  49          // MAIN Routine
  50          //------------------------------------------------------------------------------------
  51          void main (void) {
  52   1      
  53   1         // disable watchdog timer
  54   1         WDTCN = 0xde;
  55   1         WDTCN = 0xad;
C51 COMPILER V6.14  BLINKY                                                                 12/06/2008 23:38:55 PAGE 2   

  56   1      	
  57   1         PORT_Init ();
  58   1         Timer2_Init (SYSCLK / 12 / 10);        // Init Timer2 to generate interrupts
  59   1                                                // at a 10Hz rate.
  60   1      
  61   1         EA = 1;											// enable global interrupts
  62   1      
  63   1         while (1) {                            // spin forever
  64   2         }
  65   1      }
  66          
  67          //------------------------------------------------------------------------------------
  68          // PORT_Init
  69          //------------------------------------------------------------------------------------
  70          //
  71          // Configure port mux and GPIO ports
  72          //
  73          void PORT_Init (void)
  74          {
  75   1         PRT2CF |= 0x10;                        // enable P2.4 (LED) as push-pull output
  76   1      }
  77          
  78          //------------------------------------------------------------------------------------
  79          // Timer2_Init
  80          //------------------------------------------------------------------------------------
  81          //
  82          // Configure Timer2 to auto-reload and generate an interrupt at interval
  83          // specified by <counts> using SYSCLK/12 as its time base.
  84          //
  85          void Timer2_Init (int counts)
  86          {
  87   1         T2CON  = 0x00;                         // Stop Timer2; configure for auto-reload
  88   1         CKCON &= ~0x20;                        // T2M=0 (use SYSCLK/12 as timebase)
  89   1         RCAP2  = -counts;                      // Init reload value
  90   1         T2     = 0xffff;                       // set to reload immediately
  91   1         ET2    = 1;                            // enable Timer2 interrupts
  92   1         TR2    = 1;                            // start Timer2
  93   1      }
  94          
  95          //------------------------------------------------------------------------------------
  96          // Interrupt Service Routines
  97          //------------------------------------------------------------------------------------
  98          
  99          //------------------------------------------------------------------------------------
 100          // Timer2_ISR
 101          //------------------------------------------------------------------------------------
 102          // This routine changes the state of the LED whenever Timer2 overflows.
 103          //
 104          void Timer2_ISR (void) interrupt 5
 105          {
 106   1         TF2 = 0;                               // clear Timer2 overflow interrupt flag
 107   1         LED = ~LED;                            // change state of LED
 108   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     55    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
C51 COMPILER V6.14  BLINKY                                                                 12/06/2008 23:38:55 PAGE 3   

   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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