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Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2014 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide Rev 1; 2/14
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide Table of Contents
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 1. Required Equipment
- PC with Windows® OS with Xilinx® ISE®/SDK version 13.4 or later and two USB ports
- License for Xilinx EDK/SDK version 13.4 or later
- Santa Fe (MAXREFDES5#) board
- Nexys™3 development k it
- Industrial sensor or signal source 2. Overview Below is a high -level overview of the steps required to quickly get the Santa Fe design running by downloading and run ning the FPGA project. Detailed instructions for each step are provided in the following pages . The Santa Fe (MAXREFDES5#) subsystem reference design will be referred to as Santa Fe throughout this document. 1) Connect the Santa Fe board to the JB1 port of a Nexys 3 development kit as shown in Figure 1. Ensure the connector is aligned as shown in Figure 2. 2) Download the latest RD5V01_00.ZIP file located at the Santa Fe page. 3) Extract the RD5V01_00.ZIP file to a directory on your PC. 4) Open the Xilinx SDK. 5) Download the bitstream (.BIT) file to the board. This bitstream contains the FPGA hardware design and software bootloader. 6) Open a terminal program to communicate with FPGA board. 7) Use Xilinx SDK to download and run the executable file (.ELF) on the MicroBlaze™.
Figure 3. Block Diagram of FPGA Hardware Design
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 4. Procedure 1. Connect the Santa Fe board to the JB1 port of a Nexys 3 development kit as shown in Figure 1. Power up the Nexys 3 development kit. The Santa Fe board is completely powered from the Nexys 3 development kit and no external power is required. 2. Download the latest RD5V01_00.ZIP file at www.maximintegrated.com/AN5561. All files available for download are available at the bottom of the page. 3. Extract the RD5V01_00.ZIP file to a directory on your PC. The location is arbitrary but the path prior to where you extract the .ZIP file must not exceed 82 characters due to the Windows 250- character total path limitation. For example, this 90-character preceding path would be an example of a path that would be too long: C:\\0123456789\\0123456789\\0123456789\\0123456789\\0123456789\\0123456789\\ 0123456789\\0123456789\\0123456789\\RD5V01_00.ZIP (This path is too long.) In addition, the Xilinx tools require the path to not contain any spaces. C:\\Do Not Use Spaces In The Path\\RD5V01_00.ZIP (This path has spaces.) For the purposes of this document, it will be C:\\designs\\maxim\\RD5V01_00\\. See Appendix A: Project Structure and Key Filenames in this document for the project structure and key filenames.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 4. Open the Xilinx Software Development Kit (SDK) from the Windows Start menu. 5. SDK will prompt for a workspace directory, which is the location where the software project is located. For this example, it is: C:\\designs\\maxim\\RD5V01_00\\RD5_NEXYS3_V01_00\\Design_Files\\sdkWorkspace Click OK and SDK will open. The Xilinx SDK is based on an Eclipse™- based IDE, so it will be a familiar flow for many software developers.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 6. Review the SDK IDE. The Project Explorer in the upper left tab should have three components as shown in the image below. If all three subfolders are present, you can skip the next step.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 7. If the Project Explorer does not contain these three subfolders, launch the File | Import menu, expand the General folder, and select Existing Projects into Workspace. Click Next. Set the root directory to: C:\\designs\\maxim\\RD5V01_00\\RD5_NEXYS3_V01_00\\Design_Files\\sdkWorkspace and the missing projects should appear in SDK Project Explorer with their checkboxes checked. Click Finish to import the projects.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 8. To download the bitstream (.BIT) file to the board, click on the Program FPGA icon (which looks like a green chain of devices). The Program FPGA dialog box appears. From here, an FPGA bitstream (.BIT) file is selected as well as an FPGA BMM (.BMM) file. Be sure to select the .BIT file and the .BMM by using the paths below. Bitstream: C:\\designs\\maxim\\RD5V01_00\\RD5_NEXYS3_V01_00\\Design_Files\\ sdkWorkspace\\system_hw_platform\\system.bit BMM File: C:\\designs\\maxim\\RD5V01_00\\RD5_NEXYS3_V01_00\\Design_Files\\ sdkWorkspace\\system_hw_platform\\system_bd.bmm
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide Additionally, make sure bootloop is selected as shown, then press Program. It takes approximately 10 seconds to download the FPGA, then a message box indicating FPGA configuration complete appears. 9. Set up the terminal program to run on the PC using the following steps. Before loading the executable firmware file on the FPGA, the terminal program on the PC should be running. The example firmware running on the FPGA communicates with the PC via a USB port set up to emulate a serial port (UART). To establish this communication link, the PC must be configured with the appropriate Windows drivers. A suitable terminal program such as Tera Term or HyperTerminal should be invoked. The Nexys 3 utilizes the FTDI FT232 USB-UART bridge IC, so you need to install FTDI’s virtual COM port (VCP) driver for the FT232 device family. Make sure to choose the driver that supports a Virtual Com Port, also known as VCP. These can be obtained from the FTDI website (www.ftdichip.com Once installed, Windows assigns a previously unused COM port. Use the Windows Control Panel | System | Device Manager to determine the COM port number. (It will be named USB Serial Port ). Make a note of which COM port this is. That information is needed in the next step. Next, a terminal emulation program needs to be installed and launched. For Windows XP® and earlier systems, the Hyper Terminal program is the usual choice. However, since H yperTerminal was eliminated from Windows 7, it may be necessary to locate an alternative. Several are available; one good choice is called Tera Term (http://ttssh2.sourceforge.jp/) . Whatever terminal program you
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide choose, the communication should be set up by opening the COM port number previously described above and the port configured as: bits per second: 460,800; data bits: 8; parity: none; stop bits: 1; flow control: none. 10. Use the Xilinx SDK to download and run the executable ELF (.ELF) file on the MicroBlaze using the following steps. Right-click the mouse while the MAXREFDES5 C project is selected, choose the Run As menu, and then Run Configurations… menu as shown below.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide Next, double-click the mouse on the Xilinx C/C++ ELF menu.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide Next, press the Search Project button.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide Double-click on the MAXREFDES5.elf binary.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide Verify the application is selected and press the Run button. Once the Debug/MAXREFDES5 configuration is set up once, you just need to press the Run button if you ever want to run the program again.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide At this point, the application is running on the MicroBlaze and the terminal program should show the menu below. Make the desired selections by pressing the appropriate keys on the keyboard. For example, to select channel AIN0, press 0.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 5. Code Documentation Code documentation can be found at: C:\\...\\RD5V01_00\\RD5_NEXYS3_V01_00\\Code_Documentation\\ To view the code documentation in HTML format with a browser, open the MainPage.html file. To view the code documentation in . PDF format with a PDF reader, open the MAXREFDES5_Code_Documentation.pdf file.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 6. Appendix A: Project Structure and Key Filenames 7. Trademarks Eclipse is a trademark of Eclipse Foundation, Inc. MicroBlaze is a trademark of Xilinx, Inc. Nexys is a trademark of Digilent, Inc. Pmod is a trademark of Digilent, Inc. Spartan is a registered trademark of Xilinx, Inc. Windows is a registered trademark and registered service mark and Windows XP is a registered trademark of Microsoft Corporation. Xilinx is a registered trademark and registered service mark of Xilinx, Inc.
Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide 8. Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 1/13 Initial release ⎯ 1 2/14 Replaced the board name “Cupertino” with “Santa Fe” All