• Sipeed Longan Nano: 128KB Flash/32KB SRAM
• Lilygo TTGO T-Display-GD32: 128KB Flash/32KB SRAM
• ES9023 24bit I2S Audio DAC
• PCM5102 32bit I2S Audio DAC
• exFAT MicroSD (up to 512GB)
• 44.1KHz 16bit Stereo WAV File
• Tag information by LIST chunk in WAV File
• Cover Art display by RGB565 binary format file
• Folder/File navigation by ASCII order
• Control by Android Headphone button (3 buttons)
• Volume by utilizing DAC 24bit/32bit range for playing 16bit Audio data
• Album unit random play by time out after play finish (Assuming [Artist Folder]/[Album Folder] structure)
• Resume playback
• Battery voltage check (Optional: external circuit needed)

• Sipeed Longan Nano: 64KB Flash/20KB SRAM
• Multi-byte string file name
• Unicode Tag information
• Fast Forward / Fast Rewind
• Gapless playback

• Edit board_conf.h to choose your board

In addition to original connection

tie PCM5102 SCK (12) to low

Both ES9023 and PCM5102 are supported without selection.

Connect MIC pin of Android headphone remote control with 3 buttons to PA0 pin of Longan Nano. PA0 also needs to be pulled-up by 2.2Kohm from 3.3V. See schematic for detail.

• Up/Down button to go up/down for file selection
• Center 1 click to get into the folder
• Center 1 click to play WAV file (go to Play Mode)
• Center 2 click to go parent folder
• Center 3 click to random album play (go to Play Mode)

• Up/Down button for volume up/down
• Center 1 click to pause/play
• Center 2 click to stop (go back to FileView Mode)

• Long push Center button

Sipeed_Longhan_Nano_WAV_Player_schematic.pdf

• Put "cover.bin" on each Album Folder
• File Format: 80 Pixels x 80 Pixels RGB565 Binary format
• cover.bin example
• Use jpg2bin.py to convert into cover.bin

• Put "logo.bin" on root Folder
• File Format: 160 Pixels x 80 Pixels RGB565 Binary format
• logo.bin example

• Put "lilygo_logo.bin" on root Folder
• File Format: 240 Pixels x 135 Pixels x n Frames RGB565 Binary format
• lilygo_logo.bin example

Scene2 Scene3

Scene6