#ifndef MFRC522_H
#define MFRC522_H

#include <stdint.h>
#include <driver/spi_master.h>

#ifdef __cplusplus
extern "C" {
#endif

// MFRC522 SPI 命令
#define MFRC522_CMD_IDLE                0x00
#define MFRC522_CMD_AUTHENT             0x0E
#define MFRC522_CMD_RECEIVE             0x08
#define MFRC522_CMD_TRANSMIT            0x04
#define MFRC522_CMD_TRANSCEIVE          0x0C
#define MFRC522_CMD_RESETPHASE          0x0F
#define MFRC522_CMD_CALCCRC             0x03

// MFRC522 寄存器
#define MFRC522_REG_COMMAND             0x01
#define MFRC522_REG_COMM_IE_N           0x04
#define MFRC522_REG_DIV_IE_N            0x05
#define MFRC522_REG_COMM_IRQ            0x04
#define MFRC522_REG_DIV_IRQ             0x05
#define MFRC522_REG_ERROR               0x06
#define MFRC522_REG_STATUS1             0x07
#define MFRC522_REG_STATUS2             0x08
#define MFRC522_REG_FIFO_DATA           0x09
#define MFRC522_REG_FIFO_LEVEL          0x0A
#define MFRC522_REG_WATER_LEVEL         0x0B
#define MFRC522_REG_CONTROL             0x0C
#define MFRC522_REG_BITFRAMING          0x0D
#define MFRC522_REG_COLL               0x0E
#define MFRC522_REG_MODE               0x11
#define MFRC522_REG_TX_CONTROL         0x14
#define MFRC522_REG_TX_AUTO            0x15
#define MFRC522_REG_TX_SELREQ          0x16
#define MFRC522_REG_RX_SELREQ          0x17
#define MFRC522_REG_RX_THRESHOLD       0x18
#define MFRC522_REG_DEMOD              0x19
#define MFRC522_REG_MIFARE_TX          0x1C
#define MFRC522_REG_MIFARE_RX          0x1D
#define MFRC522_REG_SERIAL_SPEED       0x1F
#define MFRC522_REG_TIMER_MODE         0x2A
#define MFRC522_REG_TIMER_PRESCALER    0x2B
#define MFRC522_REG_TIMER_RELOAD_HI    0x2C
#define MFRC522_REG_TIMER_RELOAD_LO    0x2D
#define MFRC522_REG_TIMER_COUNTER_HI   0x2E
#define MFRC522_REG_TIMER_COUNTER_LO   0x2F
#define MFRC522_REG_TEST_SEN_SEL       0x38
#define MFRC522_REG_TEST_BUS           0x39
#define MFRC522_REG_AUTO_TEST          0x3A
#define MFRC522_REG_VERSION            0x37

// MFRC522 Mifare 命令
#define MFRC522_MIFARE_CMD_AUTH_KEY_A  0x60
#define MFRC522_MIFARE_CMD_AUTH_KEY_B  0x61
#define MFRC522_MIFARE_CMD_READ        0x30
#define MFRC522_MIFARE_CMD_WRITE       0xA0
#define MFRC522_PICC_CMD_SELECT_CL     0x93
#define MFRC522_PICC_CMD_HALT_A        0x50

typedef struct {
    spi_device_handle_t spi;
    uint8_t uid[10];
    uint8_t uid_len;
} mfrc522_handle_t;

/**
 * 初始化 MFRC522
 * @param sck_pin   SCK 引脚
 * @param mosi_pin  MOSI 引脚
 * @param miso_pin  MISO 引脚
 * @param cs_pin    CS 引脚
 * @param rst_pin   RST 引脚
 * @return mfrc522_handle_t 指针
 */
mfrc522_handle_t* mfrc522_init(int sck_pin, int mosi_pin, int miso_pin, int cs_pin, int rst_pin);

/**
 * 复位 MFRC522
 */
void mfrc522_reset(mfrc522_handle_t *handle);

/**
 * 写寄存器
 */
void mfrc522_write_reg(mfrc522_handle_t *handle, uint8_t reg, uint8_t val);

/**
 * 读寄存器
 */
uint8_t mfrc522_read_reg(mfrc522_handle_t *handle, uint8_t reg);

/**
 * 检测卡片
 */
uint8_t mfrc522_picc_is_new(mfrc522_handle_t *handle);

/**
 * 读卡 UID
 */
uint8_t mfrc522_picc_read_serial(mfrc522_handle_t *handle);

/**
 * 停止与卡通信
 */
void mfrc522_picc_halt_a(mfrc522_handle_t *handle);

/**
 * 关闭 MFRC522
 */
void mfrc522_deinit(mfrc522_handle_t *handle);

#ifdef __cplusplus
}
#endif

#endif // MFRC522_H