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extint32A.c
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extint32A.c
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/*
* extint2313.c
*
* Created on: 29.07.2011
* Author: Ïîëóãðóäîâ
*/
#include <avr/io.h>
#include "macros.h"
#include "extint32A.h"
void extint_int_ena(extint_enum extint_mask);
void extint_int_dis(extint_enum extint_mask);
void extint_set_int0_sense_control(input_sense_enum input_sense);
void extint_set_int1_sense_control(input_sense_enum input_sense);
void extint_int_ena(extint_enum extint_mask)
{
register uint8_t gifr = 0;
register uint8_t gicr = GICR;
#if 0
gifr |= (extint_mask << INTF2);
gicr |= (extint_mask << INT2);
#else
if (extint_mask & INT0_ENA) {
bit_set(gifr, INTF0);
bit_set(gicr, INT0);
}
if (extint_mask & INT1_ENA) {
bit_set(gifr, INTF1);
bit_set(gicr, INT1);
}
if (extint_mask & INT2_ENA) {
bit_set(gifr, INTF2);
bit_set(gicr, INT2);
}
#endif
GIFR = gifr;
GICR = gicr;
}
void extint_int_dis(extint_enum extint_mask)
{
register uint8_t gicr = GICR;
#if 0
GICR &=~ (extint_mask << INT2);
#else
if (extint_mask & INT0_ENA) {
bit_clr(gicr, INT0);
}
if (extint_mask & INT1_ENA) {
bit_clr(gicr, INT1);
}
if (extint_mask & INT2_ENA) {
bit_clr(gicr, INT2);
}
#endif
GICR = gicr;
}
void extint_set_int0_sense_control(input_sense_enum input_sense)
{
register uint8_t mcucr = MCUCSR;
switch(input_sense)
{
case IS_LOW:
bit_clr(mcucr, ISC00);
bit_clr(mcucr, ISC01);
break;
case IS_CHANGE:
bit_set(mcucr, ISC00);
bit_clr(mcucr, ISC01);
break;
case IS_FALLING_EDGE:
bit_clr(mcucr, ISC00);
bit_set(mcucr, ISC01);
break;
case IS_RISING_EDGE:
bit_set(mcucr, ISC00);
bit_set(mcucr, ISC01);
break;
default:
break;
}
MCUCR = mcucr;
}
void extint_set_int1_sense_control(input_sense_enum input_sense)
{
register uint8_t mcucr = MCUCSR;
switch(input_sense)
{
case IS_LOW:
bit_clr(mcucr, ISC10);
bit_clr(mcucr, ISC11);
break;
case IS_CHANGE:
bit_set(mcucr, ISC10);
bit_clr(mcucr, ISC11);
break;
case IS_FALLING_EDGE:
bit_clr(mcucr, ISC10);
bit_set(mcucr, ISC11);
break;
case IS_RISING_EDGE:
bit_set(mcucr, ISC10);
bit_set(mcucr, ISC11);
break;
default:
break;
}
MCUCR = mcucr;
}