Update

added support for travis ci

.travis.yml

@@ -0,0 +1,17 @@
+language: python
+python:
+    - "2.7"
+env:
+    - BOARD=uno
+    - BOARD=leonardo
+    - BOARD=esp01
+
+install:
+    - python -c "$(curl -fsSL https://raw.githubusercontent.com/platformio/platformio/master/scripts/get-platformio.py)"
+
+script:
+    - cd examples/FullFunction
+    - platformio ci -l ../.. FullFunction.ino --board=$BOARD
+    - cd ../GetStarted
+    - platformio ci -l ../.. getStarted.ino --board=$BOARD
+

DFRobotDFPlayerMini.cpp

@@ -24,15 +24,16 @@ void DFRobotDFPlayerMini::uint16ToArray(uint16_t value, uint8_t *array){
 
 uint16_t DFRobotDFPlayerMini::calculateCheckSum(uint8_t *buffer){
   uint16_t sum = 0;
-  for (int i=Stack::Version; i<Stack::CheckSum; i++) {
+  for (int i=Stack_Version; i<Stack_CheckSum; i++) {
     sum += buffer[i];
   }
   return -sum;
 }
 
 void DFRobotDFPlayerMini::sendStack(){
-  if (_sending[Stack::ACK]) {
+  if (_sending[Stack_ACK]) {
     while (_isSending) {
+      delay(0);
       available();
     }
   }
@@ -51,7 +52,7 @@ void DFRobotDFPlayerMini::sendStack(){
 #endif
   _serial->write(_sending, DFPLAYER_SEND_LENGTH);
   _timeOutTimer = millis();
-  _isSending = _sending[Stack::ACK];
+  _isSending = _sending[Stack_ACK];
 }
 
 void DFRobotDFPlayerMini::sendStack(uint8_t command){
@@ -59,9 +60,9 @@ void DFRobotDFPlayerMini::sendStack(uint8_t command){
 }
 
 void DFRobotDFPlayerMini::sendStack(uint8_t command, uint16_t argument){
-  _sending[Stack::Command] = command;
+  _sending[Stack_Command] = command;
-  uint16ToArray(argument, _sending+Stack::Parameter);
+  uint16ToArray(argument, _sending+Stack_Parameter);
-  uint16ToArray(calculateCheckSum(_sending), _sending+Stack::CheckSum);
+  uint16ToArray(calculateCheckSum(_sending), _sending+Stack_CheckSum);
   sendStack();
 }
 
@@ -72,20 +73,22 @@ void DFRobotDFPlayerMini::sendStack(uint8_t command, uint8_t argumentHigh, uint8
 }
 
 void DFRobotDFPlayerMini::enableACK(){
-  _sending[Stack::ACK] = 0x01;
+  _sending[Stack_ACK] = 0x01;
 }
 
 void DFRobotDFPlayerMini::disableACK(){
-  _sending[Stack::ACK] = 0x00;
+  _sending[Stack_ACK] = 0x00;
 }
 
 bool DFRobotDFPlayerMini::waitAvailable(){
   _isSending = true;
-  while (!available());
+  while (!available()){
-  return _handleType != HandleType::TimeOut;
+    delay(0);
+  }
+  return _handleType != TimeOut;
 }
 
-bool DFRobotDFPlayerMini::begin(Stream &stream, bool isACK){
+bool DFRobotDFPlayerMini::begin(Stream &stream, bool isACK, bool doReset){
   if (isACK) {
     enableACK();
   }
@@ -94,15 +97,22 @@ bool DFRobotDFPlayerMini::begin(Stream &stream, bool isACK){
   }
   
   _serial = &stream;
-  _timeOutDuration += 3000;
+
-  reset();
+  if (doReset) {
-  waitAvailable();
+    _timeOutDuration += 3000;
-  _timeOutDuration -= 3000;
+    reset();
-  delay(200);
+    waitAvailable();
+    _timeOutDuration -= 3000;
+    delay(200);
+  } else {
+    // assume same state as with reset(): online
+    _handleType = DFPlayerCardOnline;
+  }
+
   return (readType() == DFPlayerCardOnline) || !isACK;
 }
 
-HandleType DFRobotDFPlayerMini::readType(){
+uint8_t DFRobotDFPlayerMini::readType(){
   _isAvailable = false;
   return _handleType;
 }
@@ -112,7 +122,7 @@ uint16_t DFRobotDFPlayerMini::read(){
   return _handleParameter;
 }
 
-bool DFRobotDFPlayerMini::handleMessage(HandleType type, uint16_t parameter){
+bool DFRobotDFPlayerMini::handleMessage(uint8_t type, uint16_t parameter){
   _receivedIndex = 0;
   _handleType = type;
   _handleParameter = parameter;
@@ -120,9 +130,10 @@ bool DFRobotDFPlayerMini::handleMessage(HandleType type, uint16_t parameter){
   return _isAvailable;
 }
 
-bool DFRobotDFPlayerMini::handleError(HandleType type, uint16_t parameter){
+bool DFRobotDFPlayerMini::handleError(uint8_t type, uint16_t parameter){
   handleMessage(type, parameter);
   _isSending = false;
+  return false;
 }
 
 uint8_t DFRobotDFPlayerMini::readCommand(){
@@ -131,30 +142,30 @@ uint8_t DFRobotDFPlayerMini::readCommand(){
 }
 
 void DFRobotDFPlayerMini::parseStack(){
-  _handleCommand = *(_received + Stack::Command);
+  _handleCommand = *(_received + Stack_Command);
-  _handleParameter =  arrayToUint16(_received + Stack::Parameter);
+  _handleParameter =  arrayToUint16(_received + Stack_Parameter);
 
   switch (_handleCommand) {
     case 0x3D:
-      handleMessage(HandleType::DFPlayerPlayFinished, _handleParameter);
+      handleMessage(DFPlayerPlayFinished, _handleParameter);
       break;
     case 0x3F:
       if (_handleParameter & 0x02) {
-        handleMessage(HandleType::DFPlayerCardOnline, _handleParameter);
+        handleMessage(DFPlayerCardOnline, _handleParameter);
       }
       break;
     case 0x3A:
       if (_handleParameter & 0x02) {
-        handleMessage(HandleType::DFPlayerCardInserted, _handleParameter);
+        handleMessage(DFPlayerCardInserted, _handleParameter);
       }
       break;
     case 0x3B:
       if (_handleParameter & 0x02) {
-        handleMessage(HandleType::DFPlayerCardRemoved, _handleParameter);
+        handleMessage(DFPlayerCardRemoved, _handleParameter);
       }
       break;
     case 0x40:
-      handleMessage(HandleType::DFPlayerError, _handleParameter);
+      handleMessage(DFPlayerError, _handleParameter);
       break;
     case 0x41:
       _isSending = false;
@@ -190,19 +201,20 @@ uint16_t DFRobotDFPlayerMini::arrayToUint16(uint8_t *array){
 }
 
 bool DFRobotDFPlayerMini::validateStack(){
-  return calculateCheckSum(_received) == arrayToUint16(_received+Stack::CheckSum);
+  return calculateCheckSum(_received) == arrayToUint16(_received+Stack_CheckSum);
 }
 
 bool DFRobotDFPlayerMini::available(){
   while (_serial->available()) {
+    delay(0);
     if (_receivedIndex == 0) {
-      _received[Stack::Header] = _serial->read();
+      _received[Stack_Header] = _serial->read();
 #ifdef _DEBUG
       Serial.print(F("received:"));
       Serial.print(_received[_receivedIndex],HEX);
       Serial.print(F(" "));
 #endif
-      if (_received[Stack::Header] == 0x7E) {
+      if (_received[Stack_Header] == 0x7E) {
         _isAvailable = false;
         _receivedIndex ++;
       }
@@ -214,17 +226,17 @@ bool DFRobotDFPlayerMini::available(){
       Serial.print(F(" "));
 #endif
       switch (_receivedIndex) {
-        case Stack::Version:
+        case Stack_Version:
           if (_received[_receivedIndex] != 0xFF) {
             return handleError(WrongStack);
           }
           break;
-        case Stack::Length:
+        case Stack_Length:
           if (_received[_receivedIndex] != 0x06) {
             return handleError(WrongStack);
           }
           break;
-        case Stack::End:
+        case Stack_End:
 #ifdef _DEBUG
           Serial.println();
 #endif
@@ -235,7 +247,7 @@ bool DFRobotDFPlayerMini::available(){
             if (validateStack()) {
               _receivedIndex = 0;
               parseStack();
-              if (_isAvailable && !_sending[Stack::ACK]) {
+              if (_isAvailable && !_sending[Stack_ACK]) {
                 _isSending = false;
               }
               return _isAvailable;
@@ -394,7 +406,6 @@ int DFRobotDFPlayerMini::readVolume(){
 
 uint8_t DFRobotDFPlayerMini::readEQ(){
   sendStack(0x44);
-  while (!available());
   if (waitAvailable()) {
     return read();
   }
@@ -458,12 +469,22 @@ int DFRobotDFPlayerMini::readFileCountsInFolder(int folderNumber){
   }
 }
 
+int DFRobotDFPlayerMini::readFolderCounts(){
+  sendStack(0x4F);
+  if (waitAvailable()) {
+    return read();
+  }
+  else{
+    return -1;
+  }
+}
+
 int DFRobotDFPlayerMini::readFileCounts(){
-  readFileCounts(DFPLAYER_DEVICE_SD);
+  return readFileCounts(DFPLAYER_DEVICE_SD);
 }
 
 int DFRobotDFPlayerMini::readCurrentFileNumber(){
-  readCurrentFileNumber(DFPLAYER_DEVICE_SD);
+  return readCurrentFileNumber(DFPLAYER_DEVICE_SD);
 }
 
 

DFRobotDFPlayerMini.h

@@ -35,26 +35,30 @@
 
 //#define _DEBUG
 
-enum HandleType{
+#define TimeOut 0
-  TimeOut,
+#define WrongStack 1
-  WrongStack,
+#define DFPlayerCardInserted 2
-  DFPlayerCardInserted,
+#define DFPlayerCardRemoved 3
-  DFPlayerCardRemoved,
+#define DFPlayerCardOnline 4
-  DFPlayerCardOnline,
+#define DFPlayerPlayFinished 5
-  DFPlayerPlayFinished,
+#define DFPlayerError 6
-  DFPlayerError
-};
 
-enum DFPlayerErrorType{
+#define Busy 1
-  Busy = 1,
+#define Sleeping 2
-  Sleeping,
+#define SerialWrongStack 3
-  SerialWrongStack,
+#define CheckSumNotMatch 4
-  CheckSumNotMatch,
+#define FileIndexOut 5
-  FileIndexOut,
+#define FileMismatch 6
-  FileMismatch,
+#define Advertise 7
-  Advertise
-};
 
+#define Stack_Header 0
+#define Stack_Version 1
+#define Stack_Length 2
+#define Stack_Command 3
+#define Stack_ACK 4
+#define Stack_Parameter 5
+#define Stack_CheckSum 7
+#define Stack_End 9
 
 class DFRobotDFPlayerMini {
   Stream* _serial;
@@ -88,38 +92,26 @@ class DFRobotDFPlayerMini {
   
   uint8_t device = DFPLAYER_DEVICE_SD;
   
-  
-  enum Stack{
-    Header = 0,
-    Version = 1,
-    Length = 2,
-    Command = 3,
-    ACK = 4,
-    Parameter = 5,
-    CheckSum = 7,
-    End = 9
-  };
-  
   public:
   
-  HandleType _handleType;
+  uint8_t _handleType;
   uint8_t _handleCommand;
   uint16_t _handleParameter;
   bool _isAvailable = false;
   bool _isSending = false;
   
-  bool handleMessage(HandleType type, uint16_t parameter = 0);
+  bool handleMessage(uint8_t type, uint16_t parameter = 0);
-  bool handleError(HandleType type, uint16_t parameter = 0);
+  bool handleError(uint8_t type, uint16_t parameter = 0);
 
   uint8_t readCommand();
   
-  bool begin(Stream& stream, bool isACK = true);
+  bool begin(Stream& stream, bool isACK = true, bool doReset = true);
   
   bool waitAvailable();
   
   bool available();
   
-  HandleType readType();
+  uint8_t readType();
   
   uint16_t read();
   
@@ -194,6 +186,8 @@ class DFRobotDFPlayerMini {
   int readFileCountsInFolder(int folderNumber);
   
   int readFileCounts();
+
+  int readFolderCounts();
   
   int readCurrentFileNumber();
   

README.md

@@ -1,6 +1,7 @@
 # DFPlayer - A Mini MP3 Player For Arduino
-DFPlayer - A Mini MP3 Player For Arduino
 
+
+DFPlayer - A Mini MP3 Player For Arduino
 https://www.dfrobot.com/index.php?route=product/product&product_id=1121
 
 This example shows the all the function of library for DFPlayer.
@@ -16,5 +17,4 @@ Notice and Trouble shooting
 
 1.Connection and Diagram can be found here
 https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram
-
+2.This code is tested on Arduino Uno, Leonardo, Mega boards.
-2.This code is tested on Arduino Uno, Leonardo, Mega boards.

examples/GetStarted/getStarted.ino

@@ -1,11 +1,11 @@
 /***************************************************
 DFPlayer - A Mini MP3 Player For Arduino
- <https://www.dfrobot.com/index.php?route=product/product&product_id=1121>
+ <https://www.dfrobot.com/index.php?route=product/product&search=mp3&description=true&product_id=1121>
  
  ***************************************************
  This example shows the basic function of library for DFPlayer.
  
- Created 2016-12-07
+ Created 2014-8-28
  By [Angelo qiao](Angelo.qiao@dfrobot.com)
  
  GNU Lesser General Public License.
@@ -15,7 +15,7 @@ DFPlayer - A Mini MP3 Player For Arduino
 
 /***********Notice and Trouble shooting***************
  1.Connection and Diagram can be found here
- <https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram>
+ <>
  2.This code is tested on Arduino Uno, Leonardo, Mega boards.
  ****************************************************/
 
@@ -40,7 +40,9 @@ void setup()
     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);
+    while(true){
+      delay(0); // Code to compatible with ESP8266 watch dog.
+    }
   }
   Serial.println(F("DFPlayer Mini online."));
   

library.properties

@@ -1,9 +1,9 @@
 name=DFRobotDFPlayerMini
-version=1.0.0
+version=1.0.2
 author=DFRobot
 maintainer=Angelo <angelo.qiao@dfrobot.com>
 sentence=Driver for DFPlayer Mini from DFRobot
-paragraph=Easy-to-use and reliable library for DFPlayer Mini 
+paragraph=Easy-to-use and reliable library for DFPlayer Mini
 category=Sensors
 url=https://github.com/DFRobot/DFRobotDFPlayerMini
 architectures=*