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Altera_Forum's avatar
Altera_Forum
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19 years ago

Getting the LCD to work with NIOS II

I know a lot of people have had issues with this, and I've searched through and read many of them, but none of them have helped me. I'll go through my entire process here to make sure I'...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

In such cases you shoud follow a standard debu procedure:

As far as I know (I may be wrong) the LCD SPC builder component is a PIO component with a seral interface driver. So you should:

1. try to access the PIO registers (read the components source especially headers)

2. write into the PIO output register (with outputs enabled) and with an oscilloscope (or a LED with a resistor if you do not have a lab) check if pins togle, this way you can be sure that the hardware is OK

3. now is time to check for software problems, you may place some debugging printf into the driver, so you can verify that the driver is actually used

4. ...

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