#include "dev_backup.h"
#include "stm32f4xx.h"
#include "board.h"






// 备份结构体，一共32个字节
typedef struct{
  uint32_t state;// 程序状态
  uint32_t tick;// 运行时间
  uint32_t reboot_type;// 复位类型
  uint32_t reboot_curr;// 最后一次复位标志
  void (*wdog_refresh)(void);// 刷新看门口
  uint32_t reboot_times;// 软件重启次数
}back_def;


#define g_back ((back_def *)0x20000000)


// 重启到app
void bk_reboot_app(void)
{
  g_back->reboot_type=REBOOT_APP_TO_APP;
  NVIC_SystemReset();
}


// 重启到boot
void bk_reboot_boot(void)
{
  g_back->reboot_type=REBOOT_BOOT_TO_BOOT;
  NVIC_SystemReset();
}

// 重启并升级
void bk_reboot_updata(void)
{
  g_back->reboot_type=REBOOT_APP_TO_BOOT;
  NVIC_SystemReset();
}

// 重启并引导到app
void bk_reboot_guide(void)
{
  g_back->reboot_type=REBOOT_BOOT_TO_APP;
  NVIC_SystemReset();
}

// 断言失败重启
void bk_reboot_param_err(void)
{
  g_back->reboot_type=REBOOT_PARAM_ERR;
  NVIC_SystemReset();
}

// 硬件错误重启
void bk_reboot_hard_err(void)
{
  g_back->reboot_type=REBOOT_HARD_ERR;
  NVIC_SystemReset();
}

// 获取重启类型
uint32_t bk_get_boottype(void)
{
  return g_back->reboot_type;
}



static int bk_soft_reboot(void);
void bk_init(void)
{
  g_back->reboot_curr=g_back->reboot_type;
  g_back->reboot_type=REBOOT_INIT;
  g_back->wdog_refresh=0;
  
  // 每软件重启一次就增加计数
  if(bk_soft_reboot())
  {
    g_back->reboot_times++;
  }else{
    g_back->reboot_times=0;
  }
}


typedef struct{
  uint32_t type;
  const char *str;
}reboot_type_str;

static const reboot_type_str g_reboot_str[]={
  REBOOT_APP_TO_APP,"app restart",
  REBOOT_APP_TO_BOOT,"app reboot to boot",
  REBOOT_BOOT_TO_APP,"boot guide to app",
  REBOOT_BOOT_TO_BOOT,"boot restart",
  REBOOT_PARAM_ERR,"param err then reboot",
  REBOOT_HARD_ERR,"hard err then reboot",
  REBOOT_INIT,"watch dog died then reboot",
};


// 获取最后一次复位原因
const char *bk_get_currtype(void)
{
  uint32_t type=g_back->reboot_curr;
  for(int i=0;i<LENGTH(g_reboot_str);i++)
  {
    if(type==g_reboot_str[i].type)
      return g_reboot_str[i].str;
  }
  return "poweron then started";
}


// 非上电启动返回1
static int bk_soft_reboot(void)
{
  uint32_t type=g_back->reboot_curr;
  for(int i=0;i<LENGTH(g_reboot_str);i++)
  {
    if(type==g_reboot_str[i].type)
      return 1;
  }
  return 0;
}

// 重启次数
uint32_t bk_reboot_times(void)
{
  return g_back->reboot_times;
}

void bk_set_wdog_fun(void (*fun)(void))
{
  g_back->wdog_refresh=fun;
}
void *bk_wdog_fun(void)
{
  return g_back->wdog_refresh;
}