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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⑤ Audio Data Image Display Processing State
When the play/stop switch is pressed down in audio data playback stop state or is
selection is made from the touch panel, the system is in audio data image display
processing state. Image files are read from the USB memory, and audio data
images are displayed on the LCD.
Figure 54 Audio Data Image Display
If the target JPEG file does not exist the entire LCD is displayed in magenta. After
display processing is completed for the LCD, if the target MP3 file exists, the
system shifts to audio data playback state, If the target MP3 file does not exist, the
system shifts to audio data selection image display processing state.
[Individual State]
Play/stop switch, selection previous switch, selection next switch
Does not function even if pressed down.
LCD Touch Panel
Does not function even if touched.
LED
Playback target LED lights.
LCD
Image display is as shown in Figure 54.
USB
State where USB memory is inserted in the USB memory connector. If the USB
memory is removed in this state, the system shifts to initialization state and waits
for the USB to be re-inserted.