timer3.c

来自「GSM通讯的C语言源程序代码」· C语言 代码 · 共 28 行

//------------------------------------------------------------------------------------
// Timer3_ISR
//------------------------------------------------------------------------------------
// 
//
void Timer3_ISR (void) interrupt 14				//100 Times per Second
{
	TMR3CN &= ~(0x80);							// clear TF3

}

//------------------------------------------------------------------------------------
// Timer3_Init
//------------------------------------------------------------------------------------
//
// Configure Timer3 to auto-reload and generate an interrupt at interval
// specified by <counts> using SYSCLK/12 as its time base.
//
// 
void Timer3_Init (void)
{
//   TMR3CN = 0x00;                      // Stop Timer3; Clear TF3;
                                       // use SYSCLK/12 as timebase
   TMR3RL  = -22118400 / 12 / 100;      // Init reload values
   TMR3    = 0xffff;                   // set to reload immediately
   EIE2   |= 0x01;                     // Enable Timer3 interrupts
   TMR3CN = 0x04;                     // Start Timer3
}