Honored ContributorHi, I am new to Quartus II and using SignalTap II.
How can I set up SignalTap to just capture and display the signals between two times or values? For example, in my code I have an integer counting from 0 to 33 and I would like SignalTap to show me only the signals between those values in one window. Many thanks in advance.
Honored Contributorsignaltap much be connected to a clock, and you can set it to trigger on a certain condition. Could you not just set it to wait until the counter is 0? if it doesnt capture enough time you will need to re-compile with a larger window.
You can also set up multiple cores inside the design and have them trigger at different points. If you need some more complicated trigger conditions, it is much easier to generate the trigger logic in HDL, use syn_keep and noprune attributes on them and then connect them into signaltap.Honored ContributorI don't see where are these options tho. If for example I just want to capture the first 100 clock cycles in the window, how do I do this? Thanks
Honored ContributorThere should be 3 trigger options: instant, on trigger, or continuous on trigger.
Instant takes a snapshot now trigger waits until the trigger occurs, then downloads the buffer continuous on trigger will wait until the trigger condition occurs, download the buffer, then wait for the trigger to occur again. If you set no trigger conditions, it will just keep downloading the buffer (its not a continuous play function, you will miss the data in between the downloads). You cant just download a specified number of clocks, you need to download the entire buffer.Honored ContributorHi, Sorry but I don't see these options. On the right hand side , in the serial configuration section , I see storage qualifier options. I chose start /stop but still doesn't work as I can still just see the instantaneous signals. Down under trigger, there is trigger in and trigger out options. Is it there I set this up? Also, do I increase the number of trigger conditions to more than 1? Thanks for your help and patience.
Honored ContributorSo, if you have 13.1, you should see the buttons in this order along the toolbar:
"Run Analysis" "Autorun Analysis" "Stop Analysis" "read data" You set the trigger conditions next to the signals you have added to signal tap by right clicking in the trigger conditions column (if single bits) or typing a value (for a bus)Honored ContributorIf you have enabled the more complex triggering you can chose AND, OR or an advanced option for triggering. Otherwise the option is usually just AND.
Honored ContributorHonored ContributorIf you have a signal incrementing every 100 clocks, and you need to capture the counter going from 0-32, you need a 3200 sample window minimum.
Have you simulated the design before you compiled it? signaltap is a debug tool, not a verification tool.Honored ContributorHonored ContributorI'd use start-stop storage qualifier too. I just tried it. It works. Below is my setup.
https://www.alteraforum.com/forum/attachment.php?attachmentid=8432 And the capture: https://www.alteraforum.com/forum/attachment.php?attachmentid=8433 What do you see? (What do you see in the photo attached in the post? They were re-sized to a ridiculous small resolution :( Original size: http://signaltapit.com/static_data/img/forum/start_stop.gif http://signaltapit.com/static_data/img/forum/start_stop_data.gif)
