led.#2

8051 TIMER

/////////////////////////////////////
//  Generated Initialization File  //
/////////////////////////////////////

#include "C8051F120.h"

sbit LED = P1^6;

// Peripheral specific initialization functions,
// Called from the Init_Device() function
void Timer_Init()
{
    SFRPAGE   = TIMER01_PAGE;
    TMOD      = 0x31;
    CKCON     = 0x02;
    TL0       = 0xDC;
    TH0       = 0x0B;

}

void Port_IO_Init()
{
    // P0.0  -  Unassigned,  Open-Drain, Digital
    // P0.1  -  Unassigned,  Open-Drain, Digital
    // P0.2  -  Unassigned,  Open-Drain, Digital
    // P0.3  -  Unassigned,  Open-Drain, Digital
    // P0.4  -  Unassigned,  Open-Drain, Digital
    // P0.5  -  Unassigned,  Open-Drain, Digital
    // P0.6  -  Unassigned,  Open-Drain, Digital
    // P0.7  -  Unassigned,  Open-Drain, Digital

    // P1.0  -  Unassigned,  Open-Drain, Digital
    // P1.1  -  Unassigned,  Open-Drain, Digital
    // P1.2  -  Unassigned,  Open-Drain, Digital
    // P1.3  -  Unassigned,  Open-Drain, Digital
    // P1.4  -  Unassigned,  Open-Drain, Digital
    // P1.5  -  Unassigned,  Open-Drain, Digital
    // P1.6  -  Unassigned,  Push-Pull,  Digital
    // P1.7  -  Unassigned,  Open-Drain, Digital

    // P2.0  -  Unassigned,  Open-Drain, Digital
    // P2.1  -  Unassigned,  Open-Drain, Digital
    // P2.2  -  Unassigned,  Open-Drain, Digital
    // P2.3  -  Unassigned,  Open-Drain, Digital
    // P2.4  -  Unassigned,  Open-Drain, Digital
    // P2.5  -  Unassigned,  Open-Drain, Digital
    // P2.6  -  Unassigned,  Open-Drain, Digital
    // P2.7  -  Unassigned,  Open-Drain, Digital

    // P3.0  -  Unassigned,  Open-Drain, Digital
    // P3.1  -  Unassigned,  Open-Drain, Digital
    // P3.2  -  Unassigned,  Open-Drain, Digital
    // P3.3  -  Unassigned,  Open-Drain, Digital
    // P3.4  -  Unassigned,  Open-Drain, Digital
    // P3.5  -  Unassigned,  Open-Drain, Digital
    // P3.6  -  Unassigned,  Open-Drain, Digital
    // P3.7  -  Unassigned,  Open-Drain, Digital

    SFRPAGE   = CONFIG_PAGE;
    P1MDOUT   = 0x40;
    XBR2      = 0x40;
}

void Interrupts_Init()
{
    IE        = 0x82;
}

// Initialization function for device,
// Call Init_Device() from your main program
void Init_Device(void)
{
    Timer_Init();
    Port_IO_Init();
    Interrupts_Init();
}


void Timer_ISR(void) interrupt 1
{     
     TL0 = 0xDC;
     TH0 = 0x0B;

     LED = ~LED;
}



void main (void) {

   // disable watchdog timer
   WDTCN = 0xde;
   WDTCN = 0xad;

   Init_Device();
   
   TR0 = 1;

   while(1){                                  // spin forever      
   }
}