#ifndef OWI_H
#define OWI_H

#include "r_cg_macrodriver.h"
#include "r_cg_serial.h"
#include "r_cg_port.h"
#include <stdint.h>

/* =========================================================
 * OWI GPIO: P70 (P7.0) + HW Open-Drain (POM7.0)
 * ========================================================= */
#define OWI_PORT_P     P7      /* port data (read/write latch) */
#define OWI_PORT_PM    PM7     /* port mode (1=input, 0=output) */
#define OWI_PORT_PU    PU7     /* pull-up enable */
#define OWI_PORT_POM   POM7    /* open-drain enable */

/* P70 = bit0 */
#define OWI_PIN_MASK          (1u << 0)

/* =========================================================
 * Timing (기존 네 값 유지)
 * ========================================================= */
#define OWI_BIT_PERIOD_US     3000u
#define TBIT                  OWI_BIT_PERIOD_US
#define TLOW_0                ((TBIT * 3u) / 4u)    /* 75us (double calc) */
#define TLOW_1                ((TBIT * 1u) / 4u)   /* 25us */
#define TSTOP_LOW             (TBIT * 2)       /* 200us */
#define TIDLE                 (TBIT * 3)       /* 300us */
#define TSTART_HOLD           50u
#define SECURE_HIGH           (2u * TBIT)
#define SECURE_TOGGLE_COUNT   3u
#define SECURE_TOGGLE_LOW     (TBIT / 4u)
#define SECURE_TOGGLE_HIGH    (TBIT / 5u)

#define OWI_STRONG_HIGH_US   40u   /* 10~80us 범위에서 튜닝 */
/* =========================================================
 * External dependencies
 * ========================================================= */
#ifndef RAM_BYTES
#define RAM_BYTES 3
#endif

/* =========================================================
 * API
 * ========================================================= */

void GPIO_Clear(void);
void GPIO_Input(void);
int  GPIO_Read(void);

void OWI_Init(uint32_t bit_time_us);
void OWI_Start(void);
void OWI_Stop(void);
void OWI_SecureStop(void);

void    OWI_WriteBit(int bit);
void    OWI_WriteByte(uint8_t data);
uint8_t OWI_ReadBit(void);
uint8_t OWI_ReadByte(void);

void OWI_T_ReadBytesAndPrint(int length);
void OWI_ReadBytesAndPrint(int length, uint8_t id);

void OWI_T_CommandMode(const uint8_t *tx_data, uint8_t tx_len, uint8_t id);
void OWI_CommandMode  (const uint8_t *tx_data, uint8_t tx_len, uint8_t id);
void OWI_A_CommandMode(const uint8_t *tx_data, uint8_t tx_len, uint8_t id);

void OWI_disable(void);

/* strong high kick (push assist) */
void GPIO_ForceHighKick(void);

#endif /* OWI_H */