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GPStar Audio Instruction Manual

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Table of Contents

GPSTAR
Audio
Instruction Manual


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Table of Contents
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Summary of Contents for GPStar Audio

  • Page 1 GPSTAR Audio Instruction Manual
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  • Page 2: Use Cases

    Overview GPStar Audio is a polyphonic audio player capable of playing up to 14 stereo WAV files at the same time. Polyphonic playback gives you the ability to play multiple audio tracks simultaneously and is crucial for creating realistic and immersive audio experiences. By giving creative freedom for sound designers, GPStar Audio can layer numerous tracks over each other to create an intricate realtime experience.

  • Page 3: Hardware Specifications

    GPStar Audio is powered by an STMicroelectronics STM32F405 Arm Cortex M4 MCU unit clocked at 168 MHZ with up to 1 MByte of flash memory and 192 KB of system ram. Meanwhile the audio output is handled by a Texas Instruments LM49450 Class-D Stereo amplifier with 2.65W per channel.
  • Page 4 ** If you are using the on-board stereo amplifier with only one speaker for a mono output setup, then connect the single speaker to either SPKR-R or to SPKR-L only. ** The on-board stereo amplifier is capable of powering either a 4Ω 2.5W or 8Ω 1.25W speaker at 5V from each channel. GPStar Audio Page 4...
  • Page 5 The currently supported WAV file format is 16 bit at 44.1kHz stereo. Other audio formats can be easily converted with any audio editor or free ones. All WAV files must be loaded onto the root of the MicroSD card and named appropriately with a prefixed number sequence of ###_filename.wav. For example, 001_sound1.wav, 002_sound2.wav, 4000_sound3.wav.

  • Page 6: Powering The System

    Powering the system GPStar Audio is powered by 5V along the UART connector near the top of the board. These same set of pins are also used for driving the operation of the device with serial commands. Serial control mode...

  • Page 7: System Configuration

    = 0 A example configuration file can be downloaded from the gpstartechnologies.com support and downloads page. When no configuration file is present on the Micro SD Card, then GPStar Audio will revert to all the standard default settings. System configuration [gpstarconfig]: This area can set the general settings of the board.

  • Page 8: Updating The Firmware

    5V TTL device or with the GPStar Programming cable available from gpstartechnologies.com While the power is off to your GPStar Audio, set the switch at the top right corner of the device from BOOT to LOAD. Then connect the device to your computer and open the GPStar Audio Flashing utility.
  • Page 9 www.gpstartechnologies.com Rev 1.0...

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