在lua里调用CSDK里的函数步骤

  1. 首先需要在\app\elua\modules\include\ auxmods.h中声明模块名字和模块初始化函数

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    #define AUXLIB_XUEHU     "xuehu"
LUALIB_API int ( luaopen_xuehu )( lua_State *L );

  2. 在app\elua\platform\openat\include\ platform_conf.h文件中完成将模块名和初始化函数注册到lua内核中

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    _ROM( AUXLIB_XUEHU, luaopen_xuehu, xuehu_map ) \

  3. 注册有哪些函数

    app\elua\modules\src新建xuehu.c

    cmakelist添加src/xuehu.c

    xuehu.c

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    // Module for interfacing with Xuehu

#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
#include "lplatform.h"
#include "auxmods.h"
#include "lrotable.h"
#include "platform_conf.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>


// Lua: num = xuehu.getnum( num )
static int xuehu_getnum( lua_State* L )
{
  int pin;
  pin = luaL_checkinteger( L, 1 );
  lua_pushinteger( L, pin+30 );
  return 1;  
}

#define MIN_OPT_LEVEL 2
#include "lrodefs.h"
static const LUA_REG_TYPE xuehu_map[] =
{
    /*lua中函数名                      c语言函数名*/
  { LSTRKEY( "getnum" ), LFUNCVAL ( xuehu_getnum ) },

  { LNILKEY, LNILVAL }
};


LUALIB_API int luaopen_xuehu( lua_State *L )
{
#if LUA_OPTIMIZE_MEMORY > 0
  return 0;
#else // #if LUA_OPTIMIZE_MEMORY > 0

  luaL_register( L, AUXLIB_XUEHU, xuehu_map );

  return 1;
#endif // #if LUA_OPTIMIZE_MEMORY > 0
}