#ifndef _MAIN_H_
#define _MAIN_H_

#include <avr/io.h>

#define F_CPU 8000000
#include <util/delay.h>

#define EN_POWER	(1<<PORTB0)
#define EN_CHARGER	(1<<PORTB1)
#define EN_TEST		(1<<PORTB2)

#define AIN_REF		(1<<PINA0)
#define AIN_CURRENT_N	(1<<PINA1)
#define AIN_CURRENT_P	(1<<PINA2)
#define AIN_VOLTAGE_BAT	(1<<PINA3)
#define I2C_SCL		(1<<PORTA4)
#define LED_GN		(1<<PORTA5)
#define I2C_SDA		(1<<PORTA6)
#define AIN_VOLTAGE_SUP	(1<<PINA7)

#define I2C_ADDRESS	(0x10 << 1)

#define CH_CURRENT_P	((1<<REFS0) | 0x0d)	/* current A1->A2, 20x gain */
#define CH_CURRENT_N	((1<<REFS0) | 0x2d)	/* current A2->A1, 20x gain */
#define CH_VOLTAGE_BAT	((1<<REFS0) | 0x03)	/* voltage A3->gnd, 1x gain */
#define CH_VOLTAGE_SUP	((1<<REFS0) | 0x07)	/* voltage A7->gnd, 1x gain */

void usi_write(uint8_t data, uint8_t bcnt);
uint8_t usi_read(uint8_t bcnt);

#endif // _USI_I2C_SLAVE_H_