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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7.2.7 Application State Transition
7.2.7.1 MP3
In the case of MP3, the simple AV system consists of the six states shown in Figure 52.
⑥Audio data
playback state
④Audio data
playback stop
state
③Audio data
selection image
display processing
state
⑤Audio data image
display processing
state
②Initialization
state
①Reset state
[Initial setting complete]
[Media recognized]
[Image display processing complete]
[Play/stop switch press] or
[selection by touch panel]
[Image display processing complete]
[USB memory removed]
[USB memory removed]
[USB memory removed]
[USB memory removed]
[No corresponding MP3 file]
[play/stop switch press],
[stop by touch panel],
or [MP3 file play finish]
Figure 52 State Transition (MP3)
① Reset State
The simple AV system is in reset state immediately after the power has been
turned on.
In the reset state, internal initialization is executed.