【热门器件来 Arrow 】DFR0299 MP3播放器评测

h12121 · 发表于 2022-12-7 19:15:08

【热门器件来 Arrow 】DFR0299 MP3播放器评测

收到了DRR0299这块MP3模块，非常的小巧，看着还是比较精致的，下边就简单测一下吧！

这个就是他的原型图

这个是接上线的

看了一些他的引脚介绍图跟他的一些说明，你会发现他是可以进行串口通信的，这个就非常的好操作了。

方法一：

你可以找一块开发板，比如STM32的L476，他支持在线编译。你接好线，配置一些IO口

这个发放就先不用了，指引出来

方法二：

这里我们就不这么麻烦了直接用串口吧，下个串口调试器

下边是一个测试的例子：

DFPlayer_Mini_Mp3, This library provides a quite complete function for *
* DFPlayer mini mp3 module. *
* www.github.com/dfrobot/DFPlayer_Mini_Mp3 (github as default source provider)*
* DFRobot-A great source for opensource hardware and robot. *
* *
* This file is part of the DFplayer_Mini_Mp3 library. *
* *
* DFPlayer_Mini_Mp3 is free software: you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 3 of *
* the License, or any later version. *
* *
* DFPlayer_Mini_Mp3 is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* DFPlayer_Mini_Mp3 is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with DFPlayer_Mini_Mp3. If not, see *
* <http://www.gnu.org/licenses/>. *
* *
******************************************************************************/
/*
* Copyright: DFRobot
* name: DFPlayer_Mini_Mp3 test code
* Author: lisper <lisper.li@dfrobot.com>
* Date: 2014-05-22
* Description: mp3 library for DFPlayer mini board
*
* this code is test on leonardo
* you can try input:
* play //play current music
* play 3 //play mp3/0003.mp3
* next //play next
* prev //paly previous
* pause //pause current play
* stop //stop current play
* state //get current state of module
* current //get current track of tf card
* volume //get current volume
* volume 20 //set volume to 20 (0~30)
* single open/close //set single loop open or close
* reply open/close //set if need reply
*/
#include <SoftwareSerial.h>
#include <DFRobot_utility.h>
#include "DFPlayer_Mini_Mp3.h"
#define BUFSIZE 20 //buf size
#define CMDNUM 8 //cmdbuf size
uint8_t buf[BUFSIZE]; //data buffer for read from Serial
char *cmdbuf[CMDNUM]; //for split string from buf
//
void setup () {
Serial1.begin (9600);
Serial.begin (9600);
while (!Serial);
mp3_set_serial (Serial1); //set Serial1 for DFPlayer-mini mp3 module
mp3_set_volume (15);
mp3_get_tf_sum ();
print_info ();
}
void print_info () {
Serial.println ("you send:");
printHex (send_buf, 10);
delay (100);
int recv_leng = serialRead (Serial1, recv_buf, 10, 3);
if (recv_leng) {
Serial.println ("you get:");
printHex (recv_buf, recv_leng);
}
}
//
void loop () {
int leng;
leng = serialRead (Serial1, buf, BUFSIZE, 3); //first read data from Serial1
if (leng) {
Serial.print ("=>");
printHex (buf, leng);
}
leng = serialRead (Serial, buf, BUFSIZE, 3); //read command to buf from Serial (PC)
if (leng) {
buf[leng] = '\0';
Serial.println ((char*)buf);
int cmdleng = split(cmdbuf, (char*)buf, 8); //split command string to cmdbuf
if (cmdleng >= 1) {
if (strcmp (cmdbuf[0], "next") == 0) {
mp3_next ();
print_info ();
}
else if (strcmp (cmdbuf[0], "physical") == 0) {
if (cmdleng == 2) {
mp3_play_physical (atoi (cmdbuf[1])); //get arguments
} else {
mp3_play_physical ();
}
print_info ();
}
else if (strcmp (cmdbuf[0], "prev") == 0) {
mp3_prev ();
print_info ();
}
else if (strcmp (cmdbuf[0], "stop") == 0) {
mp3_stop ();
print_info ();
}
else if (strcmp (cmdbuf[0], "pause") == 0) {
mp3_pause ();
print_info ();
}
else if (strcmp (cmdbuf[0], "state") == 0) {
mp3_get_state ();
print_info ();
}
else if (strcmp (cmdbuf[0], "sum") == 0) {
mp3_get_tf_sum ();
print_info ();
}
else if (strcmp (cmdbuf[0], "current") == 0) {
mp3_get_tf_current ();
print_info ();
}
else if (strcmp (cmdbuf[0], "volume") == 0) {
if (cmdleng == 2) {
mp3_set_volume (atoi (cmdbuf[1]));
} else {
mp3_get_volume ();
}
print_info ();
}
else if (strcmp (cmdbuf[0], "reply") == 0 && cmdleng == 2) {
if (strcmp (cmdbuf[1], "open") == 0)
mp3_set_reply (true);
else if (strcmp (cmdbuf[1], "close") == 0)
mp3_set_reply (false);
print_info ();
}
else if (strcmp (cmdbuf[0], "play") == 0 && cmdleng == 2) {
if (cmdleng == 2) {
mp3_play (atoi (cmdbuf[1]));
} else {
mp3_play ();
}
print_info ();
}
else if (strcmp (cmdbuf[0], "eq") == 0 && cmdleng == 2) {
mp3_set_EQ (atoi (cmdbuf[1]));
print_info ();
}
else if (strcmp (cmdbuf[0], "single") == 0 && cmdleng == 2) {
if (strcmp (cmdbuf[1], "open") == 0)
mp3_single_loop (true);
else if (strcmp (cmdbuf[1], "close") == 0)
mp3_single_loop (false);
print_info ();
} else {
Serial.println ("error! no this command");
}
}
}
}

复制代码

这个是切换下一首进行播放音乐。

#include "Arduino.h"
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"
SoftwareSerial mySoftwareSerial(10, 11); // RX, TX
DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);
void setup()
{
mySoftwareSerial.begin(9600);
Serial.begin(115200);
Serial.println();
Serial.println(F("DFRobot DFPlayer Mini Demo"));
Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
if (!myDFPlayer.begin(mySoftwareSerial)) { //Use softwareSerial to communicate with mp3.
Serial.println(F("Unable to begin:"));
Serial.println(F("1.Please recheck the connection!"));
Serial.println(F("2.Please insert the SD card!"));
while(true);
}
Serial.println(F("DFPlayer Mini online."));
myDFPlayer.setTimeOut(500); //Set serial communictaion time out 500ms
//----Set volume----
myDFPlayer.volume(10); //Set volume value (0~30).
myDFPlayer.volumeUp(); //Volume Up
myDFPlayer.volumeDown(); //Volume Down
//----Set different EQ----
myDFPlayer.EQ(DFPLAYER_EQ_NORMAL);
// myDFPlayer.EQ(DFPLAYER_EQ_POP);
// myDFPlayer.EQ(DFPLAYER_EQ_ROCK);
// myDFPlayer.EQ(DFPLAYER_EQ_JAZZ);
// myDFPlayer.EQ(DFPLAYER_EQ_CLASSIC);
// myDFPlayer.EQ(DFPLAYER_EQ_BASS);
//----Set device we use SD as default----
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_U_DISK);
myDFPlayer.outputDevice(DFPLAYER_DEVICE_SD);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_AUX);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_SLEEP);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_FLASH);
//----Mp3 control----
// myDFPlayer.sleep(); //sleep
// myDFPlayer.reset(); //Reset the module
// myDFPlayer.enableDAC(); //Enable On-chip DAC
// myDFPlayer.disableDAC(); //Disable On-chip DAC
// myDFPlayer.outputSetting(true, 15); //output setting, enable the output and set the gain to 15

复制代码

或者你用Arduino IDE来做也非常方便，不过需要注意的是，库文件夹下要直接显示*.cpp和*.h文件，绝对不可以把这些库文件再套到二级以上目录，这样子就会导致IDE无法识别。

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