Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

clock requirement, again

I had posted this question previous but received no satisfactory answer. I have a FPGA starter training board. I have been designing some sequential circuits using the TTL macrofunctions and conventi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

If the LED is faint and not toggling then it's not being driven correctly. This could be for a number of reasons. Assuming you've successfully implemented what you describe then perhaps the most likely error is not assigning the output signal to the correct pin. This would, probably, result in the I/O being reserved with a weak pull-up - possibly enough to result in it appearing faint.

So, check your I/O assignments via the Pin Assignments editor.

If you still don't have any success, post some code for us to look at.

Regards,

Alex