mirror of
https://github.com/RobTillaart/Arduino.git
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137 lines
3.7 KiB
Markdown
137 lines
3.7 KiB
Markdown
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[](https://github.com/marketplace/actions/arduino_ci)
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[](https://github.com/RobTillaart/MiniMP3/actions/workflows/arduino-lint.yml)
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[](https://github.com/RobTillaart/MiniMP3/actions/workflows/jsoncheck.yml)
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[](https://github.com/RobTillaart/MiniMP3/issues)
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[](https://github.com/RobTillaart/MiniMP3/blob/master/LICENSE)
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[](https://github.com/RobTillaart/MiniMP3/releases)
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[](https://registry.platformio.org/libraries/robtillaart/MiniMP3)
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# MiniMP3 Library
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Arduino library for DFRobotics MP3 player and compatibles.
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## Description
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**Experimental**
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MiniMP3 is an Arduino library to control the DFRobotics MP3 player and compatibles.
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Goal is to have basic control of the device via hardware Serial or software Serial.
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If you need complete control including all kinds of feedback events like
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"card inserted" you need to use the DFRobotics library.
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This library is work in progress.
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#### Schema
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```
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MINI MP3
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+-----__-----+
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VCC | | BUSY
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RX | | USB-
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TX | | USB+
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DAC_R | | ADKEY_2
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DAC_L | +------+ | ADKEY_1
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SPK_1 | | | | IO_2
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GND | | SD | | GND
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SPK_2 | | CARD | | IO_1
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+--+------+--+
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When connecting to a 5V MCU, you need to add a 1K resistor between the
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Serial TX and RX as the MiniMP3 is 3V3. Otherwise a big HUM.
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```
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#### Links
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- https://wiki.dfrobot.com/DFPlayer_Mini_SKU_DFR0299 (extended library)
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## Interface
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```cpp
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#include "MiniMP3.h"
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```
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#### Constructor
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- **MiniMP3(Stream \* stream = &Serial)** Can be used with software or hardware Serial.
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Default stream is Serial.
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- **void reset()** reset the player.
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- **void lowPower()** set the player in low power mode.
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#### Basic controls
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- **void play(uint16_t track)** plays SD:/MP3/track.mp3
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- **void next()** go to next track.
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- **void prev()** go to previous track.
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- **void pause()** pause playing
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- **void stop()** stop playing.
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#### Volume
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- **void volume(uint16_t vol = 0)** set volume range 0..30.
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- default volume off.
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- **void volumeUp()** increase volume one step.
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- **void volumeDown()** decrease volume one step.
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- **void equalizer(uint8_t mode = MP3_EQ_NORMAL)**
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- Set equalizer mode, see options below.
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#### Equalizer modi
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| Mode | value | notes |
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|:-----------------|:-------:|:---------:|
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| MP3_EQ_NORMAL | 0 | default
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| MP3_EQ_POP | 1 |
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| MP3_EQ_ROCK | 2 |
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| MP3_EQ_JAZZ | 3 |
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| MP3_EQ_CLASSIC | 4 |
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| MP3_EQ_BASS | 5 |
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## Future
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#### Must
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- improve documentation
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#### Should
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- test
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- keep it minimal.
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#### Could
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- add playBack modi.
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- test different models
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- add examples
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- implement playlists
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- implement "skip_search" (play 10 seconds of each file).
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- implement randomizer
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- add unit tests (possible?)
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- get current track
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- last track
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- last mode
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#### Wont
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- implement query commands
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## Support
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If you appreciate my libraries, you can support the development and maintenance.
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Improve the quality of the libraries by providing issues and Pull Requests, or
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donate through PayPal or GitHub sponsors.
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Thank you,
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