Hi.
Sorry, but I don't know how to force this little bit of code to jump
into isr.
Can You help?
#include <pic18f1220.h>
#include <delay.h>
/*
----------------------------------------------------------------------- */
code char at __CONFIG1H CONFIG1H = _OSC_INT_Port_on_RA6_Port_on_RA7_1H &
_FCMEN_OFF_1H & _IESO_OFF_1H;
code char at __CONFIG2L CONFIG2L = _PUT_OFF_2L & _BODEN_OFF_2L &
_BODENV_2_0V_2L;
code char at __CONFIG2H CONFIG2H = _WDT_DISABLED_CONTROLLED_2H &
_WDTPS_1_32768_2H;
code char at __CONFIG3H CONFIG3H = _MCLRE_MCLR_enabled_RA5_input_dis_3H;
code char at __CONFIG4L CONFIG4L = _STVR_OFF_4L & _LVP_OFF_4L &
_BACKBUG_OFF_4L;
code char at __CONFIG5L CONFIG5L = _CP_0_OFF_5L & _CP_1_OFF_5L;
code char at __CONFIG5H CONFIG5H = _CPB_OFF_5H & _CPD_OFF_5H;
code char at __CONFIG6L CONFIG6L = _WRT_0_OFF_6L & _WRT_1_OFF_6L;
code char at __CONFIG6H CONFIG6H = _WRTC_OFF_6H & _WRTB_OFF_6H &
_WRTD_OFF_6H;
code char at __CONFIG7L CONFIG7L = _EBTR_0_OFF_7L & _EBTR_1_OFF_7L;
code char at __CONFIG7H CONFIG7H = _EBTRB_OFF_7H;
unsigned long tmp0;
static void isr(void) interrupt 0x8 { /* no priority */
T0CONbits.TMR0ON = 0;
PORTBbits.RB5 = 0;
INTCONbits.T0IF = 0;
TMR0L = 0;
delay100ktcy(5);
INTCONbits.T0IE = 1;
T0CONbits.TMR0ON = 1;
}
void main() {
TRISB = 0x0B; //00001011
LATB = 0;
ADCON1 = 0xFF; //all pins as a digital ports
OSCCON = 0x6F;
RCONbits.IPEN = 0; //priority levels disabled
T0CONbits.T08BIT = 1; //TMR0 8 bit
T0CONbits.PSA = 1; //TMR0 no prescaler
T0CONbits.T0CS = 0; //TMR0 internal instruction clock cycle
//INTCONbits.T0IF = 0; //clear TMR0 int flag
//INTCONbits.GIE = 1; //global int enabled
//INTCONbits.PEIE = 1; //peripheral int enabled
//INTCONbits.T0IE = 1; //TMR0 int enabled
INTCON = 0xE0; //the same as above
T0CONbits.TMR0ON = 1; // TMR0
while (1){
PORTBbits.RB5 = 1;
delay100ktcy(5);
}
}
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