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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7.2.8.3 File System (MDF) Task Processing Function
File System (MDF) processing is executed. (av_demoapp_MDF_task)
After reading MBR (*1) and PBR (*2) data, the number of blocks for each sector is
calculated.
When the MDF file system is initialized, media read and write processing is registered.
Start
MDF operation stage judgment
MDF opened successfully
MDF open processing
(av_demoapp_MDF_open)
Set action stage for MDF stage.
Light LED 1.
MDF close processing
(av_demoapp_MDF_close)
Set MDF stage for initialization stage.
File open
File close
Finish
Initialization
Action
Others
No
Yes
Audio stage initialized?
No
Yes
Figure 59 File System (MDF) Task Processing Function
(*1) Master Boot Record
(*2) Partition Boot Record