Nios custom component I/0 in DE2

[Altera_Forum]

Hi , everybody 

 I'm Nios Newbie. I will add component using SOPC Builder and then access it using C program.   anyone can give example?  regards faye

[Altera_Forum]

Hardware: 

http://forum.niosforum.com/forum/index.php...ded&show=&st=&# (http://forum.niosforum.com/forum/index.php?showtopic=4979&pid=18913&mode=threaded&show=&st=&#)  Software: use IOWR... and IORD... macros to avoid cache you can check some Altera provided drivers (SPI and PIO are simple examples) C:\altera\quartus60\sopc_builder\components

[Altera_Forum]

--- Quote Start ---  originally posted by iztok.jeras@Nov 30 2006, 04:39 AM hardware: http://forum.niosforum.com/forum/index.php...ded&show=&st=&# (http://forum.niosforum.com/forum/index.php?showtopic=4979&pid=18913&mode=threaded&show=&st=&#)  software: use iowr... and iord... macros to avoid cache you can check some altera provided drivers (spi and pio are simple examples) c:\altera\quartus60\sopc_builder\components <div align='right'><{post_snapback}> (index.php?act=findpost&pid=19706)  --- quote end ---    --- Quote End ---    Hi , iztok.jeras  thanks for your replies.  Regards Faye

[Altera_Forum]

Hi guys. 

I&#39;m a beginner using Nios II software and i need some advices for controlling an external camera connected to PROTO1 block in an Altera development board mounting EP2C35 FPGA. On SOPC i added a couple of PIO(??) for Ctrl bits and Data bits of the Camera,ABLE to Call IRQs. System Generation is ok,compilation is ok, software is ok , BUT:  1)If i try to read the pio ports,these are always 0 (it seems no datas eventhough the oscilloscope show datas present);  1) program stops when reach alt_irq_register(a,b,c) instruction;  Have i to add an avalon tristate bridge for allowing pios&#39;s interface or it&#39;s enough to add pios on SOPC and use pin planner? I&#39;ve done the second but happen 1) and 2)  Thank you very much  Paolo