(SKU:DFR0420)Audio Shield for DFRduino M0

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目录

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

name

表名
标号 名称 功能描述
1 linein linein
2 lineout lineout
3 sdcard sd卡插槽
4 SPEAK_L 左声道功放输出
5 SPEAK_R 右声道功放输出
6



使用教程


教程1

wav音频播放


准备

  • 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)
  • 软件


接线图


样例代码

点击下载库文件[下载链接]。如何安装库?



#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。

教程2

wav音频录制

准备

  • 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)
  • 软件


接线图


样例代码

点击下载库文件[下载链接]。如何安装库?

#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。


常见问题

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更多问题及有趣的应用,可以 访问论坛 进行查阅或发帖!


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