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Cypress AN77960 Скачать руководство пользователя страница 12

Introduction to EZ-USB® FX3’s High-Speed USB Host Controller

www.cypress.com

Document No. 001-77960 Rev. **

12

Document History

Document Title: Introduction to EZ-USB® FX3’s High-Speed USB Host Controller

Document Number: 001-77960

Revision

ECN

Orig. of

Change

Submission

Date

Description of Change

**

3606545

HKH

05/2/2012

New Spec.

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Содержание AN77960

Страница 1: ...as almost completely replaced other communication methods between peripheral devices and a PC This holds true both for general purpose devices such as flash drives and mice and special purpose devices for specific applications According to the standard USB 2 0 specifications USB peripherals may not communicate directly with one another they may communicate only with a USB host which fully controls...

Страница 2: ...vices or both supports only transfer types required by the supported peripheral devices offers optional hub support and has a relaxed power requirement These restrictions allow an embedded host to be implemented on a device with fixed limited memory USB On The Go OTG USB On The Go OTG allows two USB peripherals to talk to each other without requiring a personal computer Although OTG appears to add...

Страница 3: ...ints Details of each function call and its usage are described and documented in the following C header file FX3_INSTALL_PATH firmware u3p_firmware inc cyu3u sbhost h Running the FX3 USB Host Example Available in the FX3 SDK v1 1 are a set of examples that demonstrates the usage case of the FX3 high speed USB host These examples include cyfxusbhost FX3 as a USB host This example demonstrates the u...

Страница 4: ...on 2 Within the Eclipse IDE select File Import 3 An Import window pops up Select Existing Projects into Workspace then click Next 4 Click the radio button for Select root directory then click Browse 5 Browse to the example project directory and select the cyfxusbhost example then click OK The example project directory is usually located at FX3_INSTALL_PATH firmware basic_examples ...

Страница 5: ...and recompile the project From the Project Explorer pane expand the USBHost project and then double click cyfxusbhost h to open the file Within the file change lines 44 and 45 from define CY_FX_HOST_VBUS_ENABLE_VALUE CyFalse define CY_FX_HOST_VBUS_DISABLE_VALUE CyTrue to define CY_FX_HOST_VBUS_ENABLE_VALUE CyTrue define CY_FX_HOST_VBUS_DISABLE_VALUE CyFalse After you make the changes it is ready t...

Страница 6: ...w Zylin Embedded debug Native On the left pane under the Main tab the Project and C C Application fields automatically populate If not click on Browse and select them manually 4 On the left pane select the Debugger tab Type arm none eabi gdb exe in the GDB debugger field Select Verbose console mode 5 Select Commands tab type in target remote localhost 2331 monitor memU32 0xE0052000 0x15 under the ...

Страница 7: ...ttings Figure 3 Required Jumper and Switch Settings OTG_ID J50 Close VBUS_IN J47 Close V5P0 J40 Close UART J101 104 1 2 PMOD 2 0 Routing J96 2 3 J97 2 3 J98 Open VBUS_CTRL J100 2 3 PMOD 2 0 SW40 1 ON SW40 2 ON SW40 3 OFF SW40 4 OFF OTG_ID J50 Close VBUS_IN J47 Close V5P0 J40 Close UART J101 104 1 2 PMOD 2 0 Routing J96 2 3 J97 2 3 J98 Open VBUS_CTRL J100 2 3 PMOD 2 0 SW40 1 ON SW40 2 ON SW40 3 OFF...

Страница 8: ...st Project on FX3 DVK 1 Start the Segger J Link GDB Server by Start All Programs SEGGER J Link ARM Vx xxx J Link GDB Server via JTAG The SEGGER J Link GDB Server Vx xxx window pops up Power up the FX3 DVK board and then the ARM9 Core Id 0x07926069 shows up in the Target field Change the initial JTAG speed to 1000 kHz and select Little endian ...

Страница 9: ...Introduction to EZ USB FX3 s High Speed USB Host Controller www cypress com Document No 001 77960 Rev 9 2 Now it is time for the firmware download Under Debug Configurations click Debug ...

Страница 10: ...irmware execution stops at the breakpoint in main function 4 On top of the Debug pane select the Resume button If the FX3 USB host controller is running a line that says OTG Event 2 Input 1 shows up in the UART terminal set to 1152008N1N 5 Plug in either the USB flash drive or mouse to the DVK s USB port using the Micro B to A adapter The respective output shows in the UART terminal ...

Страница 11: ...ost controller showed you a simple way to bring USB host capability to embedded applications Included in the document were associated library and firmware examples in the SDK As a result this application note gave you everything you need to start an implementation with ease About the Author Name Hingkwan Huen Title Systems Engineer Sr Staff Contact hkh cypress com ...

Страница 12: ... www cypress com Document No 001 77960 Rev 12 Document History Document Title Introduction to EZ USB FX3 s High Speed USB Host Controller Document Number 001 77960 Revision ECN Orig of Change Submission Date Description of Change 3606545 HKH 05 2 2012 New Spec ...

Страница 13: ...s where a malfunction or failure may reasonably be expected to result in significant injury to the user The inclusion of Cypress products in life support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges This Source Code software and or firmware is owned by Cypress Semiconductor Corporation Cypress and is protecte...

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