prim_tmr.c

来自「MicroChip等单片机开发的专业RTOS,源代码」· C语言 代码 · 共 28 行

// timer tick = 1000 programme tacts (OS_TMR_TICK = 250)
#ifdef _PIC18
PR2 = OS_TMR_TICK;
INTCON = 0b11000000;
TMR2IE = 1;
TMR2IF = 0;
T2CON  = 0b00000101;
__CONFIG(2,WDTDIS);

#elif  _PIC14
OPTION = 0b00000001;
INTCON = 0b11100000;
__CONFIG(0x3ffb);

#elif  _PIC12
OPTION = 0xD2;
TMR0 = 0;

#elif  _AVR_
ei();                 // enable interrupts
TCCR0 =  0x02;
TIMSK |= 0x02;

#elif  _430_          // it is enough only for C-Spy needs        //
ei();                 // adjust the timer settings for real work  //
TACCTL1_bit.CCIE = 1;
#endif