dfPlayer application for ESP8266

See schematic for hook up. Instructable at https://www.instructables.com/id/ESP8266-DfPlayer-Audio-Player/

Features

• 4 local buttons for standalone use
• mobile browser interface
• Volume
• Play controls
• Folder selection
• Original folder names
• Mute control
• WifiManager for initial set up
• OTA for updates
• File browser for maintenance
• USB support into dfPlayer
• battery monitoring

Basic Web interface (basic.htm)

Commands are sent to ip/dfPlayer/cmd with arguments p1,p2,p3

• ?cmd=play&p1=folder&p2=track
• ?cmd=playmp3&p1=track
• ?cmd=volume&p1=level (0-30)
• ?cmd=stop
• ?cmd=volumeup
• ?cmd=volumedown
• ?cmd=speaker&p1=offon (0/1)
• ?cmd=pause
• ?cmd=start
• ?cmd=next
• ?cmd=previous
• ?cmd=mode&p1=type
• ?cmd=loopFolder&p1=folder
• ?cmd=random
• ?cmd=eq&p1=type
• ?cmd=device&p1=type
• ?cmd=setting&p1=folder&p2=track
• ?cmd=sleep
• ?cmd=reset
• ?cmd=raw&p1=cmdcode&p2=par1&p3=par2
• ?cmd=init

Mobile browser interface (/)

• Works using folderMap (see tools)
• Volume slider
• Play controls
• Named folder list

Other web support

• /edit for file browsing and upload
• /upload for simple file upload to bootstrap
• /dfPlayerStatus for basic status info
• /firmware for OTA

Config

• Edit BaseConfig.h
  • Wifi Manager set up
    • WM_NAME (ssid of wifi manager network)
    • WM_PASSWORD (password to connect)
    • On start up connect to WM_NAME network and browse to 192.168.4.1 to set up wifi
  • update_password

Libraries

• BaseSupport General access routines https://github.com/roberttidey/BaseSupport
• BitMessages Routines to look up and create pulse sequences for a commands
• BitTx Bit bang routines to execute a pulse sequence
  • Interrupt driven and supports accurate modulation
• WifiManager
• FS
• DNSServer
• ArduinoJson
• ESP8266mDNS
• ESP8266HTTPUpdateServer
• SoftwareSerial.h
• DFRobotDFPlayerMini.h
• ESP8266WiFi.h

Install procedure

• Normal arduino esp8266 compile and upload
• A simple built in file uploader (/upload) should then be used to upload the base files to SPIFF edit.htm.gz index.html (can be changed to refer to different favicon) favicon*.png graphs.js.gz
• The /edit operation is then supported to upload basic.htm and SD naming files

Tool for folder / track naming

The dfPlayer uses a very simple folder and track naming scheme folders are 01 to 99 tracks are 001,002

To avoid doing tedious renaming and also to support the mobile web interface a vbscript is used

• Copy normal folders and tracks mp3 to SD card (e.g. album names for folders)
• Run the vbscript and point it at the SD card volume&p1
• Tool will run and in a few seconds will rename all the files
• It will create a file called Folders.txt mapping the renamed folders to their original names
• It will also create a set of Tracks.txt file mapping the tracks to their original names (currently unused)
• The Folders.txt should be uploaded to the ESP8266 via /edit
• Tracks files may also be uploaded. Software may be enhanced to use these at some stage
• SD card can be maintained by deleting folders, adding new named ones and re-running the tool. Renaming will be done on new folders and new map files produced.

Mute

The dfPlayer does not naturally support mute. Volume can be set to 0 but this also mutes the headphone output.

To get separate speaker mute control a small hardware mod is needed. Replace the 0 Ohm resistor with 10K and solder a mute control onto the pad as shown in the picture in docs. This mute control goes to GPIO16