Viewing results over computer

[Jaffry]

Dear all,

Is there any simpler way for a beginner like me to view the result of the multiplier that I have made on computer.

1. One option is Jtag-to-Uart using microblaze, but I do not know the c-coding manual for microblaze.

2. Chipscope is not an option, since I dont want debugging but it is part of actual project

3. Is there any other way of controlling uart other than Microblaze

Best Reagrds,
Jaffry

 

[barry]

You don't give us a lot of information, but I'm GUESSING you are using an FPGA? And it's on a board with an RS-232 driver?

You could just implement a UART in your FPGA without having to fool around with debugging a Microblaze.

 

[Jaffry]

Thank you for your reply

I am using ML605 board with Virtex 6 FPGA.

these is not Rs232 connection in it but a Jtage pin available and through microblaze we can make the jtag-to-UART ip and since i dont know the microblaze coding so i was avoiding it

now that you are saying to implement uart in FPGA, but since i having JTAG connection how can i proceed further.
can you elaorate a little. Is there any VGA method available, i have DVi connector availabel in the evaluation KIT

 

[mrflibble]

An alternative is to use a RS232-USB dongle. Implement a simple UART in the fpga like barry said, and connect RX+TX to the dongle. Just make sure you get a dongle that likes 3.3 Volt IOs (most that I know of do).

 

[barry]

1) Communicating to a computer using JTAG is, I assume, possible, but it sounds difficult. That's not what JTAG is for.
2) USB is very complicated (simple on the outside, fancy on the inside). I don't think you want to bother with that in your FPGA, unless somebody has given you the drop-in code.
3) VGA and DVi are video interfaces. Not for communication.
4) You got yourself a pretty complicated, expensive board for someone who is a beginner.
That board does have a PCI express interface and Ethernet on it. If it came with a PCIe module(IP), you could just drive your data into that. Or use Ethernet. The product brief shows something labelled "USB to UART (J21)". Maybe that's what you need?

 

[mrflibble]

As a "my first communication connection" a simple RS232 link really is simplest.

Ethernet is cool, but comes with it's own challenges. And just for clarity, you don't need an onboard RS232 connection. You just need 2 free IO pins, and hook that up to the RX/TX of a dongle like this one:

**broken link removed**

Link is just so you know what I mean. Not necessarily this particular one, I am just too lazy too look any further.

USB goes to the PC, 2 pins RX/TX go to 2 free fpga pins. Plug in a simple UART core in the fpga and you are good to go.

You can use this RS232 verilog code, since it works in one go:

https://www.fpga4fun.com/SerialInterface.html

All you have to do is set the system clock and the baud rate.

The USB thing is accessible as a virtual com port on the PC side.