MikroElektronika PIC Microcontrollers PIC16 Datový list stáhnout pdf (Strana 156)

Programming PIC Microcontrollers in BASIC - mikroElektronika

Here is a simple example:

In the main loop, program keeps LED_run diode on and LED_int diode off. Pressing the button T causes the interrupt –

microcontroller stops executing the main program and starts the interrupt procedure.

program testinterrupt

symbol LED_run = PORTB.7 ' LED_run is connected to PORTB pin

symbol LED_int = PORTB.6 ' LED_int is connected to PORTB pin

sub procedure interrupt ' Interrupt service routine

if INTCON.RBIF = 1 then ' Changes on RB4-RB7 ?

INTCON.RBIF = 0

else if INTCON.INTF = 1 then ' External interupt (RB0 pin) ?

LED_run = 0

LED_int = 1

Delay_ms(500)

INTCON.INTF = 0

else if INTCON.T0IF = 1 then ' TMR0 interrupt occurred ?

INTCON.T0IF = 0

else if INTCON.EEIF = 1 then ' Is EEPROM write cycle finished ?

INTCON.EEIF = 0

end if

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MikroElektronika PIC Microcontrollers PIC16 Datový list Strana 156