05-24-2011 03:37 AM
Hi.I use a spartan 3an starter kit for my thesis. My thesis is on two axis sun tracking. i have problem with configuration. i have read manuals but i can t understand how to set the jumpers . so i haven t downloaded anything yet . i just use usb / jtag cable.any help please?
05-24-2011 04:35 AM
so i haven t downloaded anything yet
You can learn by trial and error, there will be no harm done.
i just use usb / jtag cable.any help please?
Try using the JTAG cable and IMPACT software to configure the FPGA. The software will tell you if there is a problem.
Then try programming the onboard configuration memory. If jumpered incorrectly, the FPGA will not configure, and you will know that the jumper settings are incorrect.
You should understand how a Spartan-3AN device 'configures' itself at power up. There is a Spartan-3 Configuration User Guide which explains how this works, both with an overview and with excruciating details for the various modes (and jumper settings).
I write this suggestion for trial and error because there is no explanation I could possibly write that would be more clear than the description in the Starter Kit Board User Guide (UG334), on page 39 (Table 4-1).
-- Bob Elkind
05-27-2011 02:37 PM
First of all thank u. If u go to page 97 : "For direct programming, the FPGA’s PROG_B pin must be held Low. Insert a jumper
05-27-2011 03:18 PM - edited 05-27-2011 03:20 PM
For direct programming, the FPGA’s PROG_B pin must be held Low. Insert a jumper in jumper J16, as shown in Figure 12-4. This holds all the FPGA’s I/O in three-state to allow the JTAG programmer full access to the SPI PROM pins.
This describes direct SPI flash programming. This function is no longer provided in the ISE 12.x or 13.x toolset (specifically, Impact). With the current toolset, SPI Flash memory programming is performed in 'indirect' mode, connecting the programming cable to the FPGA's JTAG port.
If it worked, I'm not going to argue with you!
Is controling the adc controller so simple or i should know something more?
If you understand the following, you should have little problem:
If you have trouble with these hurdles, post again with specific problems or questions, and useful responses should follow.
-- Bob Elkind
06-18-2011 12:28 PM