Peripherals API# GPIO Basic information Why need GPIO Design ideas and boundaries C API(Platform layer) Lua API Constant Enter the specified power level Relevant knowledge points IR Basic information Use Design ideas and boundaries C API(Platform layer) Lua API Constant Use cases SPI Basic information Why need SPI Design ideas and boundaries C API(Platform layer) Lua API Constant Use cases UART Basic information Why need Uart Design ideas and boundaries C API(Platform layer) Lua API Constant Use cases WLAN Basic information Why you need WLAN middleware management WIFI Design ideas and boundaries Relevant knowledge points C API(Platform layer) Constant Lua API