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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6.2 AAC File Play
(1) From Preparation to Power On
Audio data (music1.aac to music5.aac) is contained in the root directory of the USB
memory.
Insert USB memory in USB memory connector of simple AV system board.
Connect earphones or speakers to the speaker connector.
Connect USB cable to the USB connector for power supply.
Press power switch (power on).
(2) Song Selection Operation
Pressing the song selection next button selects audio file in the following order.
music1.aac => music2.aac => ... => music5.aac
If the next switch is pressed while music5.aac is selected, music5.aac is then
selected.
Pressing the song selection previous switch selects audio file in the following order.
music5.aac => music4.aac => ... => music1.aac
If the next switch is pressed while music1.aac is selected, music1.aac is then
selected.
LED1 to LED5 correspond to music1.aac to music5.aac; the lit LED indicated the file
currently selected.
Songs cannot be selected while music is being played. Stop playing to select.
Selection Next Switch
Selection Previous Switch
Figure 24 Song Selection by Previous/Next Switch