Reset software

[Altera_Forum]

Hello,  

   I' ve implemented a web server in the FPGA 1c20 in my University. The University closes my IP obtained by DHCP after 24 hours working. I don't know why. So, I need to restart my system after 24 hours working.  How can I implement a reset software not hardware?  And, If I init again the twIP stack, can it work out?  Thank you

[Altera_Forum]

Are you using one of the Altera Dev. Kits? If so, then it's likely that you can use the reconfig_request_pio to tell the config_controller that it needs to initiate a reconfiguration. You need to write a '0' to this PIO's data register. You should see this PIO in all "standard" and "full_featured" designs. 

 If you're not using one of the Dev. Kits, then it depends upon how your particular design handles configuration/re-configuration.  - slacker

[Altera_Forum]

--- Quote Start ---  originally posted by jparraez@Jul 3 2006, 04:13 AM hello,      i&#39; ve implemented a web server in the fpga 1c20 in my university. the university closes my ip obtained by dhcp  after 24 hours working. i don&#39;t know why. so, i need to restart my system after 24 hours working.  how can i implement a reset software not hardware?  and, if i init again the twip stack, can it  work out?  thank you <div align='right'><{post_snapback}> (index.php?act=findpost&pid=16625)  --- quote end ---    --- Quote End ---    I suspect a less drastic, and less hacky, approach than resetting your system is to enhance your DHCP software to support renewing addresses. The RFC is http://www.faqs.org/rfcs/rfc2131.html (http://www.faqs.org/rfcs/rfc2131.html). It&#39;s relatively straightforward See section 4.4., but basically you need a timer T1 and when this expires you send a DHCPREQUEST

[Altera_Forum]

Hey, 

 This is a way to do a software reset: # define NIOS2_RESET() NIOS2_WRITE_STATUS(0); NIOS2_WRITE_IENABLE(0); ((void(*)(void))NIOS2_RESET_ADDR)()  In your main program you just call this "function" and your  NIOS will reset.   Enjoy ... Karel - Gemidis

[Altera_Forum]

--- Quote Start ---  originally posted by slacker@Jul 3 2006, 05:00 PM are you using one of the altera dev. kits?  if so, then it&#39;s likely that you can use the reconfig_request_pio to tell the config_controller that it needs to initiate a reconfiguration.  you need to write a &#39;0&#39; to this pio&#39;s data register.  you should see this pio in all "standard" and "full_featured" designs.  if you&#39;re not using one of the dev. kits, then it depends upon how your particular design handles configuration/re-configuration.  - slacker <div align='right'><{post_snapback}> (index.php?act=findpost&pid=16632)  --- quote end ---    --- Quote End ---    Hi,  I use a Stratix II DSP dev. kit. I use the reconfig_request_pio and I write &#39;0&#39; to this PIO&#39;s data register : IOWR_ALTERA_AVALON_PIO_DATA(RECONFIG_REQUEST_PIO_BASE, 0);  But nothing happens: there is NO reconfiguration anymore! Why??  Sebastien

[Altera_Forum]

Ok I found the solution: 

 IOWR_ALTERA_AVALON_PIO_DIRECTION(RECONFIG_REQUEST_PIO_BASE, 1); IOWR_ALTERA_AVALON_PIO_DATA(RECONFIG_REQUEST_PIO_BASE, 0); IOWR_ALTERA_AVALON_PIO_DATA(RECONFIG_REQUEST_PIO_BASE, 1);  Sebastien

[Altera_Forum]

Hi, Is there an equivalent to the reconfig_request_pio on newer dev kits, like the Arria II Gx or Stratix IV Gx? Or, is another method needed, like writing a register in the MAX via the FSM?