参考lua在线运行.luatoslua菜鸟教程.runoob嵌入式终端AtShell的精简版.csdn工程目录要下载 lua-5.4.2.tar.gzlib/ └──lua-5.4.2/src/* └──src └──── LuaEngine.h └──── LuaEngine.cpp └──── LuaGPIO.h └──── LuaGPIO.cpp └──── main.cpp platformio.ini源码platformio.ini[platformio]src_dir.[env:pico32]platformespressif32 boardpico32 frameworkarduino monitor_speed115200monitor_portCOM3 upload_portCOM3 upload_speed921600build_flags-Isrc-Ilib/lua-5.4.2/src-DLUA_32BITSbuild_src_filtersrc/lib/lua-5.4.2/src/-lib/lua-5.4.2/src/lua.c-lib/lua-5.4.2/src/luac.cmain.cpp#includeArduino.h#includeLuaEngine.h#includeLuaGPIO.hstructMotor{intspeed;floatvoltage;bool enable;};Motor motor;intg_mode;floatg_vol;LuaField motorFields[]{{speed,LUA_FIELD_INT,offsetof(Motor,speed),0},{voltage,LUA_FIELD_FLOAT,offsetof(Motor,voltage),0},{enable,LUA_FIELD_BOOL,offsetof(Motor,enable),0}};staticintshowMotorInfo(lua_State*L){printf(g_mode%d\r\n,g_mode);printf(g_vol%f\r\n,g_vol);printf(motor.speed%d\r\n,motor.speed);printf(motor.voltage%f\r\n,motor.voltage);printf(motor.enable%d\r\n,motor.enable);return0;}voidsetup(){Serial.begin(115200);Lua.init();luaRegisterGPIO();//绑定变量LUA_BIND_INT(g_mode);LUA_BIND_FLOAT(g_vol);LUA_BIND_STRUCT(motor,motorFields,3);//绑定函数LUA_BIND_FUNC(showMotorInfo);Serial.println(Lua Ready);}String script;voidloop(){while(Serial.available()){String lineSerial.readStringUntil(\n);line.trim();if(lineEND){Lua.run(script.c_str());script;}else{scriptline;script\n;}}}LuaEngine.h#ifndefLUA_ENGINE_H#defineLUA_ENGINE_HexternC{#includelua.h#includelauxlib.h#includelualib.h}#includestddef.henumLuaFieldType{LUA_FIELD_INT,LUA_FIELD_FLOAT,LUA_FIELD_BOOL,LUA_FIELD_STRING};structLuaField{constchar*name;LuaFieldType type;size_toffset;size_tsize;};class LuaEngine{public:lua_State*L;voidinit();voidrun(constchar*code);// 添加普通函数voidregisterFunction(constchar*name,lua_CFunction func);// 创建模块voidbeginModule(constchar*name);// 添加模块函数voidaddFunction(constchar*name,lua_CFunction func);// 结束模块voidendModule(constchar*name);//变量绑定voidbindInt(constchar*name,int*ptr);voidbindFloat(constchar*name,float*ptr);voidbindStruct(constchar*name,void*ptr,constLuaField*fields,intcount);private:staticintintIndex(lua_State*L);staticintintNewIndex(lua_State*L);staticintfloatIndex(lua_State*L);staticintfloatNewIndex(lua_State*L);staticintboolIndex(lua_State*L);staticintboolNewIndex(lua_State*L);staticintstructIndex(lua_State*L);staticintstructNewIndex(lua_State*L);};//绑定#defineLUA_BIND_FUNC(func)Lua.registerFunction(#func,func)#defineLUA_BIND_INT(v)Lua.bindInt(#v,v)#defineLUA_BIND_FLOAT(v)Lua.bindFloat(#v,v)#defineLUA_BIND_STRUCT(v,fields,count)Lua.bindStruct(#v,v,fields,count)externLuaEngine Lua;#endifLuaEngine.cpp#includeLuaEngine.h#includeArduino.hLuaEngine Lua;// 当前模块名字voidLuaEngine::init(){LluaL_newstate();luaL_openlibs(L);}voidLuaEngine::run(constchar*code){intretluaL_dostring(L,code);if(ret!LUA_OK){Serial.print(Lua Error:);Serial.println(lua_tostring(L,-1));lua_pop(L,1);}}voidLuaEngine::registerFunction(constchar*name,lua_CFunction func){lua_register(L,name,func);}voidLuaEngine::beginModule(constchar*name){lua_newtable(L);}voidLuaEngine::addFunction(constchar*name,lua_CFunction func){lua_pushcfunction(L,func);lua_setfield(L,-2,name);}voidLuaEngine::endModule(constchar*name){lua_setglobal(L,name);}//int绑定structLuaIntObject{int*ptr;};intLuaEngine::intIndex(lua_State*L){LuaIntObject*obj(LuaIntObject*)lua_touserdata(L,1);constchar*keylua_tostring(L,2);if(strcmp(key,value)0){lua_pushinteger(L,*(obj-ptr));return1;}return0;}intLuaEngine::intNewIndex(lua_State*L){LuaIntObject*obj(LuaIntObject*)lua_touserdata(L,1);constchar*keylua_tostring(L,2);if(strcmp(key,value)0){*(obj-ptr)luaL_checkinteger(L,3);}return0;}voidLuaEngine::bindInt(constchar*name,int*ptr){LuaIntObject*obj(LuaIntObject*)lua_newuserdata(L,sizeof(LuaIntObject));obj-ptrptr;lua_newtable(L);lua_pushcfunction(L,intIndex);lua_setfield(L,-2,__index);lua_pushcfunction(L,intNewIndex);lua_setfield(L,-2,__newindex);lua_setmetatable(L,-2);lua_setglobal(L,name);}//float绑定structLuaFloatObject{float*ptr;};intLuaEngine::floatIndex(lua_State*L){LuaFloatObject*obj(LuaFloatObject*)lua_touserdata(L,1);constchar*keylua_tostring(L,2);if(strcmp(key,value)0){lua_pushnumber(L,*(obj-ptr));return1;}return0;}intLuaEngine::floatNewIndex(lua_State*L){LuaFloatObject*obj(LuaFloatObject*)lua_touserdata(L,1);constchar*keylua_tostring(L,2);if(strcmp(key,value)0){*(obj-ptr)luaL_checknumber(L,3);}return0;}voidLuaEngine::bindFloat(constchar*name,float*ptr){LuaFloatObject*obj(LuaFloatObject*)lua_newuserdata(L,sizeof(LuaFloatObject));obj-ptrptr;lua_newtable(L);lua_pushcfunction(L,floatIndex);lua_setfield(L,-2,__index);lua_pushcfunction(L,floatNewIndex);lua_setfield(L,-2,__newindex);lua_setmetatable(L,-2);lua_setglobal(L,name);}structLuaStructObject{void*ptr;constLuaField*fields;intcount;};staticLuaField*findField(LuaStructObject*obj,constchar*name){for(inti0;iobj-count;i){if(strcmp(obj-fields[i].name,name)0){return(LuaField*)obj-fields[i];}}returnNULL;}intLuaEngine::structIndex(lua_State*L){LuaStructObject*obj(LuaStructObject*)lua_touserdata(L,1);constchar*keylua_tostring(L,2);LuaField*fieldfindField(obj,key);if(fieldNULL)return0;uint8_t*addr(uint8_t*)obj-ptrfield-offset;switch(field-type){caseLUA_FIELD_INT:lua_pushinteger(L,*(int*)addr);break;caseLUA_FIELD_FLOAT:lua_pushnumber(L,*(float*)addr);break;caseLUA_FIELD_BOOL:lua_pushboolean(L,*(bool*)addr);break;caseLUA_FIELD_STRING:lua_pushstring(L,(char*)addr);break;}return1;}intLuaEngine::structNewIndex(lua_State*L){LuaStructObject*obj(LuaStructObject*)lua_touserdata(L,1);constchar*keylua_tostring(L,2);LuaField*fieldfindField(obj,key);if(fieldNULL)return0;uint8_t*addr(uint8_t*)obj-ptrfield-offset;switch(field-type){caseLUA_FIELD_INT:*(int*)addrluaL_checkinteger(L,3);break;caseLUA_FIELD_FLOAT:*(float*)addrluaL_checknumber(L,3);break;caseLUA_FIELD_BOOL:*(bool*)addrlua_toboolean(L,3);break;caseLUA_FIELD_STRING:strncpy((char*)addr,luaL_checkstring(L,3),field-size-1);break;}return0;}voidLuaEngine::bindStruct(constchar*name,void*ptr,constLuaField*fields,intcount){LuaStructObject*obj;obj(LuaStructObject*)lua_newuserdata(L,sizeof(LuaStructObject));obj-ptrptr;obj-fieldsfields;obj-countcount;lua_newtable(L);lua_pushcfunction(L,structIndex);lua_setfield(L,-2,__index);lua_pushcfunction(L,structNewIndex);lua_setfield(L,-2,__newindex);lua_setmetatable(L,-2);lua_setglobal(L,name);}LuaGPIO.h#ifndefLUA_GPIO_H#defineLUA_GPIO_HvoidluaRegisterGPIO();#endifLuaGPIO.cpp#includeArduino.h#includeLuaEngine.h#includeLuaGPIO.hstaticintlua_gpio_write(lua_State*L){intpinluaL_checkinteger(L,1);intvalueluaL_checkinteger(L,2);pinMode(pin,OUTPUT);digitalWrite(pin,value);return0;}staticintlua_gpio_read(lua_State*L){intpinluaL_checkinteger(L,1);pinMode(pin,INPUT);lua_pushinteger(L,digitalRead(pin));return1;}voidluaRegisterGPIO(){Lua.beginModule(gpio);//gpio.write(pin, value)Lua.addFunction(write,lua_gpio_write);// gpio.read(pin)Lua.addFunction(read,lua_gpio_read);Lua.endModule(gpio);}测试读写全局变量[20:47:29.752]发→◇g_mode.value7;g_vol.value1.5;motor.speed5;motor.voltage5.3;motor.enable1;showMotorInfo()END □[20:47:29.765]收←◆g_mode7g_vol1.500000motor.speed5motor.voltage5.300000motor.enable1读按键[18:25:11.359]发→◇s1gpio.read(0)print(s1);END □[18:25:11.367]收←◆1算术运算[18:27:31.432]发→◇s112 print(s1);END □[18:27:31.438]收←◆3开灯[18:29:51.824]发→◇gpio.write(2,1)END关灯[18:30:17.479]发→◇gpio.write(2,0)END