/*
 * File      : spi_wifi_rw009.h
 * This file is part of RT-Thread RTOS
 * Copyright by Shanghai Real-Thread Electronic Technology Co.,Ltd
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2014-07-31     aozima       the first version
 * 2014-09-18     aozima       update command & response.
 */

#ifndef SPI_WIFI_H_INCLUDED
#define SPI_WIFI_H_INCLUDED

#include <stdint.h>

// little-endian
struct spi_cmd_request
{
    uint32_t flag;
    uint32_t M2S_len; // master to slave data len.
    uint32_t magic1;
    uint32_t magic2;
};

#define CMD_MAGIC1          (0x67452301)
#define CMD_MAGIC2          (0xEFCDAB89)

#define CMD_FLAG_MRDY       (0x01)

// little-endian
struct spi_response
{
    uint32_t flag;
    uint32_t S2M_len; // slave to master data len.
    uint32_t magic1;
    uint32_t magic2;
};

#define RESP_FLAG_SRDY      (0x01)
#define RESP_MAGIC1         (0x98BADCFE)
#define RESP_MAGIC2         (0x10325476)

/* spi slave configure. */
#define SPI_MAX_DATA_LEN    1520
#define SPI_TX_POOL_SIZE    2
#define SPI_RX_POOL_SIZE    2

typedef enum
{
    data_type_eth_data = 0,
    data_type_cmd,
    data_type_resp,
    data_type_status,
}
app_data_type_typedef;

struct spi_data_packet
{
    uint32_t data_len;
    uint32_t data_type;
    char buffer[SPI_MAX_DATA_LEN];
};

/********************************* RW009 **************************************/

/* option */
#define RW009_CMD_TIMEOUT           (RT_TICK_PER_SECOND*3)
#define SSID_NAME_LENGTH_MAX        (32)
#define PASSWORD_LENGTH_MAX         (64)

typedef struct _rw009_ap_info
{
    char        ssid[SSID_NAME_LENGTH_MAX];
    uint8_t     bssid[8]; // 6byte + 2byte PAD.
    int         rssi;               /* Receive Signal Strength Indication in dBm. */
    uint32_t    max_data_rate;      /* Maximum data rate in kilobits/s */
    uint32_t    security;           /* Security type  */
    uint32_t    channel;            /* Radio channel that the AP beacon was received on   */
} rw009_ap_info;

typedef struct _rw009_cmd_init
{
    uint32_t mode;
} rw009_cmd_init;

typedef struct _rw009_resp_init
{
    uint8_t mac[8];     // 6byte + 2byte PAD.
    uint8_t sn[24];     // serial.
    char version[16];   // firmware version.
} rw009_resp_init;

typedef struct _rw009_cmd_easy_join
{
    char ssid[SSID_NAME_LENGTH_MAX];
    char passwd[PASSWORD_LENGTH_MAX];
} rw009_cmd_easy_join;

typedef struct _rw009_cmd_join
{
    uint8_t bssid[8]; // 6byte + 2byte PAD.
    char passwd[PASSWORD_LENGTH_MAX];
} rw009_cmd_join;

typedef struct _rw009_cmd_rssi
{
    uint8_t bssid[8]; // 6byte + 2byte PAD.
} rw009_cmd_rssi;

typedef struct _rw009_resp_join
{
    rw009_ap_info ap_info;
} rw009_resp_join;

struct rw009_cmd
{
    uint32_t cmd;
    uint32_t len;

    /** command body */
    union
    {
        rw009_cmd_init init;
        rw009_cmd_easy_join easy_join;
        rw009_cmd_join join;
        rw009_cmd_rssi rssi;
    } params;
};

struct rw009_resp
{
    uint32_t cmd;
    uint32_t len;

    int32_t result; // result for CMD.

    /** resp Body */
    union
    {
        rw009_resp_init init;
        rw009_ap_info ap_info;
    } resp;
};

#define RW009_CMD_INIT              128
#define RW009_CMD_SCAN              129
#define RW009_CMD_JOIN              130
#define RW009_CMD_EASY_JOIN         131
#define RW009_CMD_RSSI              132

/* porting */
extern void spi_wifi_hw_init(void);
extern void spi_wifi_int_cmd(rt_bool_t cmd);
extern rt_bool_t spi_wifi_is_busy(void);

/* export API. */
extern int32_t rw009_rssi(void);
extern rt_err_t rw009_join(const char * SSID, const char * passwd);

#endif // SPI_WIFI_H_INCLUDED