osd-contiki/platform/osd-merkur/dev/pir-sensor.c
2014-11-19 12:04:38 +01:00

86 lines
1.7 KiB
C

/* Sensor routine */
#include "contiki.h"
#include "lib/sensors.h"
#include "dev/pir-sensor.h"
#include <avr/interrupt.h>
#include "led.h" // debug
const struct sensors_sensor pir_sensor;
static struct timer debouncetimer;
static int status(int type);
static int enabled = 0;
struct sensors_sensor *sensors[1];
unsigned char sensors_flags[1];
#define PIR_BIT INTF6
#define PIR_CHECK_IRQ() (EIFR & PIR_BIT) ? 0 : 1
#define PRINTF(...) printf(__VA_ARGS__)
/*---------------------------------------------------------------------------*/
ISR(INT6_vect)
{
// leds_toggle(LEDS_YELLOW);
if(PIR_CHECK_IRQ()) {
if(timer_expired(&debouncetimer)) {
led1_on();
timer_set(&debouncetimer, CLOCK_SECOND / 4);
sensors_changed(&pir_sensor);
led1_off();
}
}
}
/*---------------------------------------------------------------------------*/
static int
value(int type)
{
return (PORTE & _BV(PE6) ? 0 : 1) || !timer_expired(&debouncetimer);
//return 0;
}
static int
configure(int type, int c)
{
switch (type) {
case SENSORS_ACTIVE:
if (c) {
if(!status(SENSORS_ACTIVE)) {
led1_on();
timer_set(&debouncetimer, 0);
DDRE |= (0<<DDE6); // Set pin as input
PORTE |= (1<<PORTE6); // Set port PORTE bint 6 with pullup resistor
EICRB |= (3<<ISC60); // For rising edge
EIMSK |= (1<<INT6); // Set int
enabled = 1;
sei();
led1_off();
}
} else {
enabled = 0;
EIMSK &= ~(1<<INT6); // clear int
}
return 1;
}
return 0;
}
static int
status(int type)
{
switch (type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return enabled;//(EIMSK & (1<<INT6) ? 0 : 1);//PIR_IRQ_ENABLED();
}
return 0;
}
SENSORS_SENSOR(pir_sensor, PIR_SENSOR,
value, configure, status);