uMP3 Settings Table
Communication Settings
| Setting | Name | Value | Description (default) |
|---|---|---|---|
| D | Baud/Bit Rate | 0 | 9600 bps |
| 1 | 19200 bps | ||
| 2 | 38400 bps | ||
| 3 | 57600 bps | ||
| 4 | 115200 bps | ||
| 5 | 2400 bps | ||
| 6 | 4800 bps | ||
| 7 | 230400 bps | ||
| 8 | 460800 bps | ||
| P | Prompt Character | 1 to 254 | 62 (‘>’) |
| R | Response Delay | 0 to 254 | Time in 10 ms increments (e.g. 5 = 50 ms) 0 = No response delay (immediate response) |
Non-volatile Playback Settings
| Setting | Name | Value | Description (default) |
|---|---|---|---|
| V | Start-up Playback Volume | 0 to 254 | Volume setting (in -0.5 dB increments) for when the unit powers up. Default is 16 (i.e. -8 dB) |
| O | Repeat/Loop Count | 0 to 254 | 0 = Infinite loop (until interrupted or stopped) |
| 1 = Single | |||
| 2 to 254 = number of loops to play | |||
| B | Treble/Bass Boost | 0 to 65535 | See Boost |
File System Settings
| Setting | Name | Value | Description (default) |
|---|---|---|---|
| C | Copy Progress Style | 0 | none |
| 1 | progress hash “#” every 2048 bytes | ||
| 2 | total bytes copied & copy rate | ||
| 3 | progress hash, bytes copied & copy rate | ||
| E | Read/Write Line Terminator | 0 | CR |
| 1 | LF | ||
| 2 | CRLF | ||
| T | Write Time-out | 0 to 254 | Time in 10 ms increments (e.g. 20 = 200 ms) 0 = No time-out (waits indefinitely) |
| L | Directory Listing Style | 0 | old style |
| 1 | new style |
Input/Output Interface Settings
| Setting | Name | Value | Description (default) |
|---|---|---|---|
| S | Input Style | 0 | Input ignored |
| 1 | 8 Button/Switch Input | ||
| 2 | 7 Bit plus Trigger Input | ||
| H | Hardware Busy Indicator | 0 or 1 | “D” pin becomes a hardware busy logic output (high = playing) |
| N | Input File Number Offset | 0 to 9872 | Numbering offset for Input files |
| U | Input Non-stop Control | 8 bit mask | In 8 Button/Switch mode, this 8 bit mask indicates which buttons will be considered non-stop (a 1 in the mask indicates non-stop). In 7 Bit mode, anything > 0 will indicate non-stop playback. |
| A | Input Polarity Control | 8 bit mask | Used only in 8 Button/Switch mode, this 8 bit mask indicates the polarity of input for each individual input pin (a 1 in the mask indicates positive edge triggering). |
| M | Switch Input Debounce Mode | 0 or 1 | Used only in 8 Button/Switch mode, this setting will turn on a simple 40 ms debounce algorithm for the inputs |