#ifndef I2C_TARGET_H
#define I2C_TARGET_H
#include <stdbool.h>
#include "battery.h"


// I2C command codes
#define CMD_GET_BATTERY_STATUS        0x01       // Request battery state
#define CMD_GET_BATTERY_DATA          0x02       // Request battery data
#define CMD_SET_BATTERY_LIMIT         0x03       // SET min/max voltage, cutoff current limits

//Maximum packet sizes
#define I2C_TX_MAX_PACKET_SIZE_PI (16)
#define I2C_RX_MAX_PACKET_SIZE_PI (16)

//Flag for READ and WRITE
extern volatile bool piRxComplete;
extern volatile bool piTxComplete;
extern uint8_t piTxPacket[I2C_TX_MAX_PACKET_SIZE_PI];
extern uint8_t piRxPacket[I2C_RX_MAX_PACKET_SIZE_PI];

/*Counters for Tx and Rx length and bytes sent*/
extern uint32_t piTxLen, piTxCount;
extern uint32_t piRxLen, piRxCount;

//Structure for Battery Data Message (GET battery data)

typedef struct{
    uint8_t slot_id;
    uint16_t voltage;
    uint16_t current;
    uint16_t temperature;
} BatteryData;

//SET Battery Limit
typedef struct{
    uint8_t slot_id;
    uint16_t min_voltage;
    uint16_t max_voltage;
    uint16_t cut_off_current;
    uint16_t capacitance;
    uint16_t charge_fraction;
} BatteryLimitMsg;

//void I2C_Init();
void Battery_ReadState(uint8_t slot_id);
#endif