DFR0420

DFR0420 Datasheet

Audio Shield For DFRduino M0

Part	Datasheet
DFR0420	DFR0420 (pdf)

PDF Datasheet Preview
Audio Shield For DFRduino M0 SKU DFR0420 DFRduino M0 Audio Expansion Shield selects the latest full-featured WM8978 of Wolfson as the audio processor. It comes with HI-FI level digital signal processing kernel, supporting 3D surroundsound enhancement and 5 frequency bands balance which can improve the sound quality. With a programmable notch filter, it also can filter noise caused by current noise, etc. Attributing to the plentiful hardware resource on DFRduino M0, we finally can transplant this HI-FI level codec chip to Arduino platform. Functions like dual channels playing, SD card storage, MONO recording and dual channels 3W PA power amplification are available even without serial port MP3 module. It is efficient in serial port resources, flexible in control and convenient to use. DFRduino M0 Audio Expansion Shield adopts standard IIS interface, equipped with on-board MIC and 3.5mm audio jack, supporting external voice source input and output. It also has left and right channels speakers, which you can connect 3W trumpets. NOTE DFRduino M0 Audio Expansion Shield uses IIS interface and it is only compatible with DFRduino M0 and Bluno M0 microconyrollers, not support common Arduino microcontrollers. • WM8978 professional Hi-Fi codec chip • Standard IIS interface • Dual 3W amplifier • Support onboard MIC, DC3.5 MIC Input Specification • Operating Voltage 5V • Maximum Operating Current 2A • Audio Format wav file • DFRduino M0 shield package • Input Interface 3.5mm MIC & On-board MIC • Output Interface 3.5MIC headphone & XH2.54 Speaker pins • Dimension 55mm * 53mm/2.16" * • Weight 26g Board Overview Audio Shield For DFRduino M0 Pin Out Num Label 1 Linein 2 Lineout 3 Micro-SD 4 Speaker_L 5 Speaker_R Description 3.5mm Microphone 3.5mm headset Micro-SD Left Speaker Right Speaker Tutorial In this section, we'll display 2 examples Play WAV music & Record your voice. Requirements • Hardware • DFRduino M0 Mainboard x1 Audio Shield for DFRduino M0 x1 3.5mm headphone or 3W Speaker MicroSD card with FAT format Currently, exFAT is not supported. Please use FAT16 or FAT32 for formatting . • Software Arduino IDE Version requirements V1.6+ , Click to Download Arduino IDE from Sample Code 1 Play WAV File #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 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" ; //We must continue to decode to provide data to the player ret = wav.decode ; //user code == WAV_DECODING ; while 1 ; Operating Steps Leave your wav file on the root of Micro-SD card. Named with "test.wav" , Insert your SD card into the SD card slot. Note SD storage format must be FAT Plug in speakers or headphones Upload the sample code, open the serial port monitor, and it will play themusic. Sample Code 2 #include <SPI.h> #include <Wire.h> #include <SD.h> #include <WAV.h>

PDF Datasheet Preview

Audio Shield For DFRduino M0

SKU DFR0420

DFRduino M0 Audio Expansion Shield selects the latest full-featured WM8978 of Wolfson as the audio processor. It comes with HI-FI level digital signal processing kernel, supporting 3D surroundsound enhancement and 5 frequency bands balance which can improve the sound quality. With a programmable notch filter, it also can filter noise caused by current noise, etc.

Attributing to the plentiful hardware resource on DFRduino M0, we finally can transplant this HI-FI level codec chip to Arduino platform. Functions like dual channels playing, SD card storage, MONO recording and dual channels 3W PA power amplification are available even without serial port MP3 module. It is efficient in serial port resources, flexible in control and convenient to use.

DFRduino M0 Audio Expansion Shield adopts standard IIS interface, equipped with on-board MIC and 3.5mm audio jack, supporting external voice source input and output. It also has left and right channels speakers, which you can connect 3W trumpets.

NOTE DFRduino M0 Audio Expansion Shield uses IIS interface and it is only compatible with DFRduino M0 and Bluno M0 microconyrollers, not support common Arduino microcontrollers.
• WM8978 professional Hi-Fi codec chip
• Standard IIS interface
• Dual 3W amplifier
• Support onboard MIC, DC3.5 MIC Input

Specification
• Operating Voltage 5V
• Maximum Operating Current 2A
• Audio Format wav file
• DFRduino M0 shield package
• Input Interface 3.5mm MIC & On-board MIC
• Output Interface 3.5MIC headphone & XH2.54 Speaker pins
• Dimension 55mm * 53mm/2.16" *
• Weight 26g

Board Overview

Audio Shield For DFRduino M0 Pin Out Num Label 1 Linein 2 Lineout 3 Micro-SD 4 Speaker_L 5 Speaker_R

Description 3.5mm Microphone 3.5mm headset Micro-SD Left Speaker Right Speaker

Tutorial

In this section, we'll display 2 examples Play WAV music & Record your voice.

Requirements
• Hardware
• DFRduino M0 Mainboard x1 Audio Shield for DFRduino M0 x1 3.5mm headphone or 3W Speaker MicroSD card with FAT format Currently, exFAT is not supported. Please use FAT16 or FAT32 for formatting .
• Software Arduino IDE Version requirements V1.6+ , Click to Download Arduino IDE from

Sample Code 1 Play WAV File
#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

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" ;
//We must continue to decode to provide data to the player ret = wav.decode ;
//user code
== WAV_DECODING ;
while 1 ;

Operating Steps

Leave your wav file on the root of Micro-SD card. Named with "test.wav" , Insert your SD card into the SD card slot. Note SD storage format must be FAT Plug in speakers or headphones Upload the sample code, open the serial port monitor, and it will play themusic.

Sample Code 2
#include <SPI.h> #include <Wire.h> #include <SD.h> #include <WAV.h>

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived DFR0420 Datasheet file may be downloaded here without warranties.

Datasheet ID: DFR0420 508761