Wifi mode

WiFi音频播放/语音识别

此示例为MicroAI的音频播放、语音识别的示例。

所需硬件

mCookie-Core+
MBattery+
MicroAI
MCookie-Hub/zh
Sensor-Crash/zh*2
耳机
1.27mm 4P传感器线*3
Micro USB线

电路搭建

将Battery、Core+、hub堆叠在一起，通过MicroUSB数据线接入电脑，使用传感器线连接MicroAI的UART(串口)。将耳机根据模块上的耳机标志插入，并下载如下程序至Core+。将两个碰撞传感器接在D4和D6口

代码

#include <Microduino_Key.h>
#include <Microduino_Ai.h>

#define WIFI_SSID   "SSID"  //路由器名称
#define WIFI_PWD    "PW"   //路由器密码
#define WEB_NUM     4

const char* webRadioUrl[WEB_NUM] = {
  "https://http.qingting.fm/386.mp3",
  "https://http.qingting.fm/387.mp3",
  "https://http.qingting.fm/388.mp3",
  "https://http.qingting.fm/389.mp3",
};

static uint8_t webRadioIndex = 0xFF;
DigitalKey touch1(D4);
DigitalKey touch2(D6);
MicroAi mAi(&Serial1);

char strBuf[64] = {0};

void setup() {
  Serial.begin(115200);
  touch1.begin(INPUT_PULLUP);
  touch2.begin(INPUT_PULLUP);  

  Serial.print("MicroAi set mode: WIFI.");
  Serial.println("start initiation. ");     
  if(mAi.begin(MODE_WIFI)){
    Serial.println("init OK!");  
  }else{
    Serial.println("init failed!");
    while(1);  
  }
  
  if(mAi.setWifi(WIFI_SSID, WIFI_PWD)){
    Serial.println("set wifi ssid and password OK!");  
  }else{
    Serial.println("set wifi ssid and password failed!");
    while(1);  
  }
  Serial.print("wifi connecting"); 
  while(mAi.getRssi()==0){
    Serial.print("."); 
    delay(1000);
  }
  Serial.println("\r\nwifi connected.");     

  delay(1000);
}

void loop() {

  if(touch1.readEvent() == SHORT_PRESS) {
    if(webRadioIndex < WEB_NUM-1)
      webRadioIndex++;
    else
      webRadioIndex = 0;
      
    mAi.playFile(webRadioUrl[webRadioIndex]);
  }

  if(touch2.readEvent() == SHORT_PRESS) {
    delay(500);
    Serial.print("AT start Rest: ");
    if(mAi.startRest()){
      Serial.println("OK!");  
      int32_t code = mAi.waitResult(strBuf);
      if(code){
        Serial.print("rest code: ");
        Serial.print(code);
        Serial.print(", result: ");
        Serial.println(strBuf);       
      }else{
        Serial.println("rest none ");
      }
    }else{
      Serial.println("Failed!");
    }
  }
  
  delay(50);
}

运行结果

1）观察串口，显示至WiFi Connected时。可以选择按下D4按键，进入音频播放模式，再次按下可以切换第二首、第三首，切至最后一首再次按下则回到第一首。
使用mAi.playFile(webRadioUrl[webRadioIndex]);函数播放。示例中，文件地址使用网址代替，同样可以使用SD卡存储音频文件，并直接在参数中填入文件名.mp3即可