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#include "timer0.h"
#include "button.h"
#ifdef USE_FOLLOWME
#define BUTTON !(PINC & (1<<PINC6))
#endif
#ifdef USE_SDLOGGER
#define BUTTON !(PINC & (1<<PINC3))
#endif
#define CNT_KEY 10 // at least 3
#define KEY_DELAY_MS 50
uint16_t ButtonTimer = 0;
void Button_Init(void)
{
// set port pin as input pullup
#ifdef USE_FOLLOWME
PORTC |= (1 << PORTC6);
DDRC &= ~(1 << DDC6);
#endif
#ifdef USE_SDLOGGER
PORTC |= (1 << PORTC3);
DDRC &= ~(1 << DDC3);
#endif
ButtonTimer = SetDelay(KEY_DELAY_MS);
}
uint8_t GetButton(void)
{
static uint8_t button = 0;
uint8_t ret = 0;
if(CheckDelay(ButtonTimer))
{
if(BUTTON)
{
if(button++ == 0 || button == CNT_KEY) ret = 1;
if(button == CNT_KEY) button = CNT_KEY - CNT_KEY / 3;
}
else button = 0;
ButtonTimer = SetDelay(KEY_DELAY_MS);
}
return(ret);
}