User Manual
Table Of Contents
- Revision History
- Table of Contents
- Target products
- 1 INTRODUCTION
- 2 OVERVIEW OF SIMPLE AV SYSTEM BOARD
- 3 PREPARATIONS
- 4 PROGRAM EXECUTION METHOD
- 5 SUPPORTED MEDIA
- 6 OPERATION METHOD
- 7 SPECIFICATIONS
- 7.1 Hardware
- 7.2 Software
- 7.2.1 Software Block Diagram
- 7.2.2 Software Library
- 7.2.3 System Specifications
- 7.2.4 API Specifications
- 7.2.5 Operation Limit
- 7.2.6 Operation Flow of Entire Application
- 7.2.7 Application State Transition
- 7.2.8 Operation Flow
- 7.2.8.1 Main Processing Function
- 7.2.8.2 USB Task Processing Function
- 7.2.8.3 File System (MDF) Task Processing Function
- 7.2.8.4 HMI Task Processing Function
- 7.2.8.5 AUDIO Play Task Processing Function
- 7.2.8.6 Switch Press Detection Processing Function
- 7.2.8.7 Processing Function After Switch Press Detection
- 7.2.8.8 Touch Panel Touch Detection Processing Function
- 7.2.8.9 Processing After Touch Panel Touch Detection Function
- 7.2.9 File Configuration
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1 INTRODUCTION
This user manual contains specifications and information on how to use the simple AV
system board.
2 OVERVIEW OF SIMPLE AV SYSTEM BOARD
The simple AV system board plays the following 2 types of music media files and performs
1 type of image output. Music media files are however not played simultaneously; The
format of played music file is set in accordance with compile options.
① MP3/JPEG
JPEG files in a USB memory are imported by the file system, and the data decoded
by the JPEG encoder/decoder are output and displayed on the LCD.
The MP3 file to be played is selected on the touch panel. It is then imported from the
USB memory by the file system, and is played by outputting the data decoded by the
MP3 decoder to the DAC. You can select and play MP3 files by switch operation as
well.
② AAC
The AAC file to be played is selected by switch operation and the AAC file is imported
from the USB memory by the file system. The imported AAC file is decoded by AAC
decoder and the data is output to the DAC and played.
If playing an AAC file, image output to the LCD and touch panel control do not work.
Image/Audio File Read
Image/Audio File Read
Image Output
Image Output
Touch Panel Control
Touch Panel Control
Audio Output
Audio Output
Image/Audio File Decode
Image/Audio File Decode
Switch Detection
Switch Detection
Image/Audio File Read
Image/Audio File Read
Image Output
Image Output
Touch Panel Control
Touch Panel Control
Audio Output
Audio Output
Image/Audio File Decode
Image/Audio File Decode
Switch Detection
Switch Detection
Figure 1 System Overview