add echo light decription

docs/en/quick_start/atom/atom_echo_quick_start.md

@@ -40,6 +40,18 @@ EchoSTT is a speech to text service, which sends the local speech to the cloud s
 
 ## UIFlow example for EchoSTT services
 
+**LED Description**
+
+1.After power on, the red status light indicates that the network is not connected
+
+2.After power on, the green status light indicates that it is connected to the network
+
+3.Press the button and the status light turns yellow
+
+4.The recognition result recognition status light is red
+
+5.The recognition result is successful and the status light is green
+
 Before running this example, make sure that you have completed the above steps to get the token.
 
 <img src="assets/img/product_pics/atom_base/echo/EchoSTT.webp" width = "50%">

docs/zh_CN/quick_start/atom/atom_echo_quick_start.md

@@ -48,6 +48,18 @@ EchoSTT是一个语音转文字服务，通过网络将本地语音发送至云
 
 ## EchoSTT服务的Arduino案例程序
 
+**指示灯说明**
+
+1.开机后红色状态灯表示网络未连接
+
+2.开机后绿色状态灯表示已连接网络
+
+3.按下按键状态灯变为黄色
+
+4.识别结果识别状态灯为红色
+
+5.识别结果成功状态灯为绿色
+
 使用该案例时您需要通过M5Burner点击获取Token，在示例中填入SSID和WIFI密码，找到rest.settoken("your_token");在其中填入获取的Token
 
 - [EchoSTT服务](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Core/Atom/AtomEcho/Arduino/EchoSTT)