- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
I just bought a DE0-Nano Development and Education Board from:
http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&no=593 This is my first FPGA. I use Quartus II 32-bit Version 13.0.1 Web Edition Start with a simple design I made a running LED - Use the on-board oscillator. PLL and lpm counter to make the frequency lower - another lpm counter to feed the lpm decode. - lpm decode to output the running LED running OK Then I tried add a DFF to make the running LED bidirectional (see my pic). - The DFF is controlled by the lpm decode edge output. The DFF output is controlling the lpm counter. The running LED is not running as I expected. The led7 only ON at startup and never reach back. So it run with sequence like this from startup: led7 - led6 - led5 - led4 - led3 - led2 - led1 - led0 - led1 - led2 - led3 - led4 - led5 - led6 - led5 - led4 - ... (not reaching led7) Something wrong in my design? http://www.alteraforum.com/forum/attachment.php?attachmentid=12201&stc=1Link Copied
0 Replies
Reply
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page