多级菜单第二次执行跑偏求助

ringhui · 发表于 2021-8-28 09:17:06

各位大佬：
在写一个程序的时候，参考网上找的多级菜单程序，自己修改了一下，第一次执行菜单的时候狠成功，但是第二次执行的时候就会出现跑偏的现象，求助如何解决。以下为源码。
我有尝试过把初始化菜单定义一个新的函数里面，只执行一次也不行，也尝试过把MenuPoint定义成全局变量也不行。
运行环境为keil MDK5.18a
多谢。
struct MenuItem
{
      short MenuCount;                //当前菜单项目总数
      void (*Subs) ();                //选择某一菜单后执行的功能函数
      struct MenuItem *ChildrenMenus;  //当前项目的子菜单
      struct MenuItem *ParentMenus; //当前项目的父菜单
};

struct MenuItem wifi_M_Menu[2] =
{
      {2, NULL, NULL, NULL},
      {2, NULL, NULL, NULL},
};

struct MenuItem wifi_SUBA_Menu[3] =
{
      {3, NULL, NULL, wifi_M_Menu},
      {3, NULL, NULL, wifi_M_Menu},
      {3, NULL, NULL, wifi_M_Menu},
};

struct MenuItem wifi_SUBB_Menu[3] =
{
      {3, NULL, NULL, wifi_M_Menu},
      {3, NULL, NULL, wifi_M_Menu},
      {3, NULL, NULL, wifi_M_Menu},
};

struct MenuItem wifi_SUBA1_Menu[1] =
{
      {1, heart_beat, NULL, wifi_SUBA_Menu},
};

struct MenuItem wifi_SUBA2_Menu[1] =
{
      {1, L_state, NULL, wifi_SUBA_Menu},
};

struct MenuItem wifi_SUBA3_Menu[11] =
{
      {11, R_M_NO, NULL, wifi_SUBA_Menu},
      {11, R_R_NO, NULL, wifi_SUBA_Menu},
      {11, R_W_IP, NULL, wifi_SUBA_Menu},
      {11, R_S_IP, NULL, wifi_SUBA_Menu},
      {11, R_S_Port, NULL, wifi_SUBA_Menu},
      {11, R_F_State, NULL, wifi_SUBA_Menu},
      {11, R_W_State, NULL, wifi_SUBA_Menu},
      {11, R_S_State, NULL, wifi_SUBA_Menu},
      {11, R_P_State, NULL, wifi_SUBA_Menu},
      {11, R_SoftVer, NULL, wifi_SUBA_Menu},
      {11, R_HardVer, NULL, wifi_SUBA_Menu},
};

struct MenuItem wifi_SUBB1_Menu[1] =
{
      {1, CMDERR, NULL, wifi_SUBB_Menu},
};

struct MenuItem wifi_SUBB2_Menu[4] =
{
      {4, L_RUN, NULL, wifi_SUBB_Menu},
      {4, L_STOP, NULL, wifi_SUBB_Menu},
      {4, L_EMG, NULL, wifi_SUBB_Menu},
      {4, L_Weigh, NULL, wifi_SUBB_Menu},
};

struct MenuItem wifi_SUBB3_Menu[9] =
{
      {9, S_M_NO, NULL, wifi_SUBB_Menu},
      {9, S_R_NO, NULL, wifi_SUBB_Menu},
      {9, S_W_IP, NULL, wifi_SUBB_Menu},
      {9, S_S_IP, NULL, wifi_SUBB_Menu},
      {9, S_S_Port, NULL, wifi_SUBB_Menu},
      {9, S_F_State, NULL, wifi_SUBB_Menu},
      {9, S_W_State, NULL, wifi_SUBB_Menu},
      {9, S_S_State, NULL, wifi_SUBB_Menu},
      {9, S_P_State, NULL, wifi_SUBB_Menu},
};

void ESP07_process(void)
{
      struct MenuItem *MenuPoint; //当前菜单的地址
      u8 selectItem = 0;

      wifi_M_Menu[0].ChildrenMenus = wifi_SUBA_Menu;

      wifi_M_Menu[1].ChildrenMenus = wifi_SUBB_Menu;

      wifi_SUBA_Menu[0].ChildrenMenus = wifi_SUBA1_Menu;
      wifi_SUBA_Menu[1].ChildrenMenus = wifi_SUBA2_Menu;
      wifi_SUBA_Menu[2].ChildrenMenus = wifi_SUBA3_Menu;

      wifi_SUBB_Menu[0].ChildrenMenus = wifi_SUBB1_Menu;
      wifi_SUBB_Menu[1].ChildrenMenus = wifi_SUBB2_Menu;
      wifi_SUBB_Menu[2].ChildrenMenus = wifi_SUBB3_Menu;


      MenuPoint=wifi_M_Menu;

      selectItem = RX_DATA[2];
      if (MenuPoint[selectItem].ChildrenMenus != NULL)
      {
            MenuPoint = MenuPoint[selectItem].ChildrenMenus;
      }
      else if (MenuPoint[selectItem].Subs != NULL)
      {
            MenuPoint[selectItem].Subs();
      }

      selectItem = RX_DATA[3];
      if (MenuPoint[selectItem].ChildrenMenus != NULL)
      {
            MenuPoint = MenuPoint[selectItem].ChildrenMenus;
      }
      else if (MenuPoint[selectItem].Subs != NULL)
      {
            MenuPoint[selectItem].Subs();
      }

      selectItem = RX_DATA[4];
      if (MenuPoint[selectItem].ChildrenMenus != NULL)
      {
            MenuPoint = MenuPoint[selectItem].ChildrenMenus;
      }
      else if (MenuPoint[selectItem].Subs != NULL)
      {
            MenuPoint[selectItem].Subs();
      }

      return;
}