Recently got a Digilent's Nexys3 Spartan6 FPGA development board, I want to learn how to use EDK how to develop embedded systems. The FPGA on Nexys3 is XILINX's Spartan-6 series XC6LX16CSG324, which integrates 32-bit soft-core processor MicroBlaze, with XILINX target design platform XPS / EDK can easily perform hardware and software for embedded systems. MicroBlaze currently supports two internal bus PLBs and AXIs, first studying a system platform based on a PLB bus.
Ready to work:
PC WINDOWS XP SP3
Xilinx Ise Design Suite 13.2
Nexys3 development board
Serial Monitoring Program ---- Super Terminal (Serial Port Set: Porter Rate 9600, 8-bit Data Bit, 1 Stop Bit, No Parp)
Nexys3 BSB Support Bag Nexys3_BSB_SUPPORT_V_2_3.ZIP
1.BSB wizard to establish an embedded system
Open XPS, select BSB Wizard
Named new Project, select PLB System, select the BSB PLB Support Pack in the Path box
According to the step, always select 83.33MHz
Select the component of the system, the first system wants to be, the better, so only the button, switch, and serial port monitor IP core. Other all Remove first.
Some basic information of the system
2. System setting compile
The following figure can see the IP used by the system, Nexys3 has a custom IP: MEM_BUS_MUX_0, as long as the system is used to control the distribution of multiple memory, the system will be automatically added.
Port connection
Assignment of address
The left Project column also automatically generates the System.MHS file and the system.ucf file.
Select Hardware->generate BitStream this process is a bit slow
3. Establishment of the hardware and software environment
Choose Project->Export Hardware Design to EDK ..., pop-up window starts EDK
Create a Workspace
You can see that hardware design is imported EDK.
First, the BSP is to be established, which is software driver as a variety of peripherals of the embedded system. Select file->new->xilinx board support package
After completing, the EDK will automatically compile, then the BSP is created.
To this simple embedded hardware platform and driver is built, the software can be developed on this.
4. Software Test Program
Select File->new->xilinx C Project, try the DEMO program that comes with the system, select the Peripheral Test program
Here you can choose to have just built a good BSP.
After completing, EDK is automatically compiled, you can see the newly added test programs in the project, and the SRC is the source file of the test, and the .elff file has also been generated.
Select Xilinx Tools->program FPGA, you can see the .bit file and .bmm file in the pop-up window, select the .elff file that is just generated under the ELF file bar.
To connect Nexys3 on the computer, and power up, then start programming FPGA.
The test program starts running, the serial port can monitor the run results
The 8-bit switch '0''1' state is represented by a 16-bit value, and the 4-bit button status 'Press' 'Bounce' is also represented by a 16-bit numerical value. The Nexys3 board is in the middle of the button zone, a button can reset the program, redisplay the status value of the collected light and buttons.
summary:
To thismay, a very simple embedded system is completed, the test program shows that the development of the Embedded system is indeed very simple, and the integrated design of the hardware and software is integrated with Xilinx's target design platform. The next time I will try to add external settings on this simple system.
Reference link:
http://www.xilinx.com/support/documentation/spartan-6.htm
http://www.digilentinc.com/products/detail.cfm?navpath=2,400,897&prod=Nexys3
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