Application Note
Renesas Synergy™ Platform
USBX
™
Mass Storage (Host)
R30AN0239EU0122
Rev.1.22
Feb 23, 2017
Introduction
This project illustrates the use of a USB mass storage class host to access data on a common USB flash +. The application also includes key elements to demonstrate how they work together in a typical design, including ThreadX ®
RTOS, USBX host stack, USBX mass storage class driver, USBX host controller driver for the Renesas Synergy
Platform, FileX ® , and a sample application that reads and writes files on the drive.
Target Device
• Renesas Synergy
™ DK-S3A7 v2.0 Development Kit
• Renesas Synergy
™ DK-S7G2 v3.0 Development Kit
• Renesas Synergy
™ PE-HM1 v2.0 Product Example Kit
• Renesas Synergy
™ SK-S7G2 v3.1 Starter Kit
• Renesas Synergy
™ PK-S5D9 v1.0 Performance Kit.
Minimum PC Recommendation
• Microsoft
® Windows ® 7
• Intel
® Core ™ family processor running at 2.0 GHz or higher (or equivalent processor)
• 8 GB memory
• 250 GB hard disk or SSD
• USB 2.0
• Internet connection.
Installed Software
• e
2 studio ISDE v5.3.1 or greater or IAR EW for Synergy v7.71.1 or greater
• Synergy Software Platform (SSP) v1.2.0
• Synergy Standalone Configurator (SSC) v5.3.1.002.
If you do not have one of these software applications you should install it before continuing.
Goals and Objectives
This document shows how to implement a USB Host on different Renesas Synergy Kits through an example demo application.
Target Audience
This document is intended for users who want to develop applications using USB Host using the S3A7, S7G2, or S5D9
Synergy MCUs.
Contents
1.
Connect to the Board ............................................................................................................... 2
2.
Import the Project into e2 studio .............................................................................................. 3
3.
Application Features ................................................................................................................ 3
4.
Run the Demo ......................................................................................................................... 3
5.
References .............................................................................................................................. 3
R30AN0239EU0122 Rev.1.22
Feb 23, 2017
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Renesas Synergy™ Platform USBX™ Mass Storage (Host)
1. Connect to the Board
When connecting a J-Link debugger to the PC and inserting a USB flash drive on the boards, refer to Table 1.1for
information on the selected kit.
Table 1.1 J-Link connect ports and USB host ports for different kits
Kits
DK-S3A7
DK-S7G2
SK-S7G2
PE-HMI
PK-S5D9
J-Link connect USB host port
J15
J17
J19
J12
J19
J101 on the base board
J3
J6
J3
J6
In addition, you also have to enable the USB host on the base board of the DK-S3A7 with a proper switch setting on the
S6, as shown Figure 1.1.
Figure 1.1 Enable the USB host port with S6 on the DK-S3A7
Then plug a USB flash stick formatted as FAT32 to the board’s USB host connector as shown in Figure 1.2 below.
Note: If your flash stick does not work, that is the light does not turn on or demo fails, check to make sure that it is formatted as FAT32. You may need to reformat the stick to get it to work, however, do not use quick format.
Some flash sticks do not seem to work possibly because of quality issues with the drives. They may still work with a personal computer but not with the embedded software.
R30AN0239EU0122 Rev.1.22
Feb 23, 2017
Figure 1.2 USB flash stick connected
Page 2 of 4
Renesas Synergy™ Platform USBX™ Mass Storage (Host)
2. Import the Project into e
2
studio
To import the project:
• Refer to the "Synergy Project Import Guide" (Renesas, 2017) for instructions on importing the project into e
2 studio and building/running the project.
Note: In the above procedure, when asked to select the Debug Configuration select USBX_Mass_Storage_Host
Debug under Renesas GDB Hardware Debugging.
3. Application Features
This section describes the key features of the USB Mass Storage Class (Host) demonstration application and the steps needed to run the application.
The demonstration application illustrates USB connectivity through these two functions where:
• The board mounts the USB stick as FileX storage media
• The application opens a file on the stick, increments the first character in the file, and writes it back to the storage media.
4. Run the Demo
To run the demo:
1. After programming the MCUs, press the Reset button to make a power-on reset. For example, press the S7 on the
DK-S3A7 v2.0.
2. Insert a USB flash stick into the USB host receptacle on the board.
3. Observe that the LED on the USB stick lights up. This indicates that the USB flash stick has been powered and the file system has been mounted.
The demo looks for the file counter.txt on the flash drive. If the file is on the flash drive, the software opens it, reads the first character, increments it, and saves it back into the file. If the file is not on the flash drive, the software creates it and stores a 1 into the file. Then, the demo closes the file.
4. Remove the USB flash stick from the board and plug it into a PC. Open the file counter.txt in the root of the
USB flash stick and note the number in the file, which counts the time of plugging the USB flash stick into the boards.
5. Repeat steps 2-4 and observe the number incremented each time.
5. References
Renesas. (2017). Synergy Project Import Guide, r11an0023eu0116-synergy-ssp-import-guide.pdf.
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Feb 23, 2017
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Renesas Synergy™ Platform USBX™ Mass Storage (Host)
Website and Support
Support: https://synergygallery.renesas.com/support
Technical Contact Details:
• America: https://renesas.zendesk.com/anonymous_requests/new
• Europe: https://www.renesas.com/en-eu/support/contact.html
• Japan: https://www.renesas.com/ja-jp/support/contact.html
All trademarks and registered trademarks are the property of their respective owners.
R30AN0239EU0122 Rev.1.22
Feb 23, 2017
Page 4 of 4
Rev.
1.00
1.01
1.02
1.03
1.10
1.20
1.2.1
1.2.2
Revision History
Date
Dec 11, 2015
Jan 7, 2016
Jan 22, 2016
Feb 12, 2016
Jun 24, 2016
Oct 27, 2016
Nov 30, 2016
Feb 23, 2017
-
-
-
-
-
-
-
Description
Page
-
Summary
Initial version
Changed from template to import
Connected to boards before import
PE-HMI1 and SK-S7G2 code samples updated
Updated to SSP1.1.0, improved demo description, added note for drive format
Migrated to SSP 1.2.0-b.1
Added IAR EW support
Updated for SSP 1.2.0
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