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Custom component using SOPC builder (PCIe S2gx dev board) Please HELP

Honored Contributor II


I built two SOPC systems (Quartus 7.2 SP3) each of which has NIOS, PCIe, JTAG, PLL and PIO component. PIO is tied to 8 bit LED on the Stratix II GX development board 


- All the components used are from SOPC component library. 

- Works fine; LED changes state according to the 8-bit data passed through PCIe component. 


- PIO component is built using component editor, with the pio.v file generated in the first project. I think I have all the connections correct. 

- This project doesnt work; the LEDs are always at 0x0 state. 

I am sought of lost on this problem :confused: and not sure why it is not working. Any help would be greatly appreciated.  

Thanks a lot.  

PS: the projects are uploaded as attachments. (http://www.alteraforum.com/forum/newthread.php?do=newthread&f=31)
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Honored Contributor II



I looked at the the First example of Nios II with PCIe and PIO. 


How are you transferring the data from PCIe component to Led PIOs...? 


I am more interested in Nios II Software code which can do this Data transaction..? 


Kindly reply asap