MP3 Player with Ultibo API

Using libmad to decode the mp3 file.

Usage

Based on the 20_pwm_sound example.

• Adjust the API_PATH of the Makefile according to your needs.
• You must compile the Ultibo API project.
• Copy the test.mp3 file to the micro SD.

Note: You can use another mp3 file, but be sure to change the name within the program. The mp3 file has been downloaded from this site.

Program

• With the test.mp3 file, it reads it, decodes it, and obtains relevant information.
• Gets the duration of the song in hh:mm:ss.
• It is then played back via PWM with the output of the jack.

On screen displays:

The file size of test.mp3 is: 2105160 bytes
Read MP3 File OK

Decoding the mp3 file..

Duration: 00:02:11
Bitrate: 128000 bps
Number channels: 2
Sample Rate: 44100 hz

Additional information

• Information MAD: MPEG Audio Decoder
• Official forum and solution to doubts from Forum Ultibo.
• Ultibo API examples and information Ultibo API.