Arduino语音模块-Audio Shield for DFRduino M0

简介

• Audio Shield for DFRduino M0 是一款标准IIS接口的音频模块，采用WM8978 HiFi级codec芯片，具备单声道录音，双声道放音，SD卡存储，板载 SPI flash 存储，双声道3W功放。
• 搭配DFRobot M0系列开发板，能够让客户自由掌控各种音频功能，相对使用串口音频模块，能够让客户有更灵活的控制。

产品参数

• 工作电压：5V
• 工作电流：2A
• 标准shield接口
• 输入接口：linein & mic
• 输出接口：lineout & speaker
• 尺寸 55mm*53mm
• 重量 很轻

引脚说明

使用教程

wav音频播放

所需硬件

• DFRduino M0 Mainboard x1
• Audio Shield for DFRduino M0 x1
• 3.5mm接口耳机或者3W喇叭
• 已经格式化为FAT格式的SD卡一张（当前不支持exFAT，请使用FAT16或者FAT32进行格式化）

所需软件

• Arduino IDE 版本1.6.6及以上版本 点击下载Arduino IDE

样例代码

点击下载库文件[下载链接]

#include <SPI.h>
#include <Wire.h>
#include <SD.h>
#include <WAV.h>

// set up variables using the SD utility library functions:
Sd2Card card;

///< assign sd card chipselect pin
const int chipSelect = 30;
void setup()
{
    // Open serial communications and wait for port to open:
    Serial.begin(115200);
    while (!Serial) {
      ; // wait for serial port to connect. Needed for Leonardo only
    }

    while(1){
        Serial.print("\nInitializing SD card...");

        // we'll use the initialization code from the utility libraries
        // since we're just testing if the card is working!
        if (!card.init(SPI_HALF_SPEED, chipSelect)) {
            Serial.println("initialization failed. Things to check:");
            Serial.println("* is a card inserted?");
            Serial.println("* is your wiring correct?");
            Serial.println("* did you change the chipSelect pin to match your shield or module?");
            delay(2000);
            continue;
        } else {
            Serial.println("Wiring is correct and a card is present.");
            if (!SD.begin(chipSelect)) {
                Serial.println("Card failed, or not present");
                delay(2000);
                continue;
            }
            break;
        }
    }
}

void loop() 
{
    int ret;
    //assign music file and trigger transport dma
    wav.play("test.wav");
    do{
        //We must continue to decode to provide data to the player
        ret = wav.decode(); 
       //user code
       
    }while(ret == WAV_DECODING);
    
    while(1);
}                              

结果

打开串口，看到播放信息，之后耳机播放出声音。

wav音频录制

所需硬件

• DFRduino M0 Mainboard x1
• Audio Shield for DFRduino M0 x1
• 3.5mm接口耳机
• 已经格式化为FAT格式的SD卡一张（当前不支持exFAT，请使用FAT16或者FAT32进行格式化）

所需软件

• Arduino IDE 版本1.6.6及以上版本 点击下载Arduino IDE

样例代码

点击下载库文件[下载链接]

#include <SPI.h>
#include <Wire.h>
#include <SD.h>
#include <WAV.h>

// set up variables using the SD utility library functions:
Sd2Card card;

const int chipSelect = 30;  ///< assign sd card chipselect pin

void setup()
{
    // Open serial communications and wait for port to open:
    Serial.begin(115200);
    while (!Serial) {
        ; // wait for serial port to connect. Needed for Leonardo only
    }

    while(1){
        Serial.print("\nInitializing SD card...");

        // we'll use the initialization code from the utility libraries
        // since we're just testing if the card is working!
        if (!card.init(SPI_HALF_SPEED, chipSelect)) {
            Serial.println("initialization failed. Things to check:");
            Serial.println("* is a card inserted?");
            Serial.println("* is your wiring correct?");
            Serial.println("* did you change the chipSelect pin to match your shield or module?");
            delay(2000);
            continue;
        } else {
            Serial.println("Wiring is correct and a card is present.");
            if (!SD.begin(chipSelect)) {
                Serial.println("Card failed, or not present");
                delay(2000);
                continue;
            }
            break;
        }
    }
}

void loop() 
{
    int ret;
    ret = wav.record("rec.wav");
    unsigned int start = millis();
    while(ret == WAV_ENCODING){
        ret = wav.encode();
        if(millis() - start > 5000){
            wav.stop();
            ret = WAV_ENCODE_END;
        }
    };
    while(1);
}       

                   

结果

打开串口，看到播放信息，之后耳机播放出声音。

本文整理于DFRobot wiki