AVR-IBus.A2DP
BT A2DP Extension for AVR-IBus Modul

Description

This will get an Extension Board for AVR-IBus.public Basic Modul. To use the BMW Radio Mode [CD] as Bluetooth Audio Device.
Steps:

• design Extension PCB
• code ESP32 Code for Bluetooth A2DP
• Side ESP32: code Communication with Atmega2560
• Side Atmega2560: code Communication with ESP32
• Code cleanup

BOM

• ESP32
• PCM5102A
• ...

Wiring

PCB

Commands & States

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Command	Description
CQ	Connection state Request
CP	Confirm Paring Pin
MQ	Music state Request
MS	Music Stop
MH	Music Pause
MM	Music Play
MP	Music Previous Track
MR	Music Fast Rewind
MF	Music Fast Forward
MN	Music Next Track
MQ	Music sate request
MQ	Music sate request
TQ	Track Meta Data Request
VU	BT Device Volume UP
VD	BT Device Volume DOWN
EQ	3Band EQ Requests
EU	Gain all Bands Up
ED	Gain all Bands Down
EB+	Gain Bass Up
EB-	Gain Bass Down
EM+	Gain Mid Up
EM-	Gain Mid Down
ET+	Gain Treble Up
ET-	Gain Treble Down
EN	Gain Reset all Bands to 1.0
SR	Settings Reseet
SN:MyName	Set BT Device Name to MyName

States	Description
C0	Disconnected
C1	Connecting
C2	Connected
CA	Returns connected Sender MAC-Address example CA:11:22:33:44:55:66
M0	Music is stopped or paused
M1	Music is playing
M2	Music skips back or prev Track
M3	Music fast rewind Track
M4	Music fast forward Track
M5	Music skips next Track
TA	Track Artist
TT	Track Title
TL	Track Album
TP	Track Position (in seconds)
TA	Track Length (in seconds)
EL	Gain Bass Level example EL:1.1
EM	Gain Mid Level example EM:1.1
EH	Gain Treble Level example EH:1.1

Used Librarys:

• ESP32-A2DP by pschatzmann
• arduino-audio-tools by pschatzmann
• Arduino
• ESP32 Package by Espressif

Project Progress/Milestones

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