Nios® V/II Embedded Design Suite (EDS)
Support for Embedded Development Tools, Processors (SoCs and Nios® V/II processor), Embedded Development Suites (EDSs), Boot and Configuration, Operating Systems, C and C++
Announcements
FPGA community forums and blogs on community.intel.com are migrating to the new Altera Community and are read-only. For urgent support needs during this transition, please visit the FPGA Design Resources page or contact an Altera Authorized Distributor.
12748 Discussions

Cannot read IPENDING register!

Altera_Forum
Honored Contributor II
‎03-04-2013 08:34 PM
1,066 Views

Hi guys, 

I'm new to this niosII concept. I've only started working with it a week ago for my final year project. 

every code i wrote worked fine except when interrupts are required (i'm using internal interrupt controller) 

after debugging like 5 programs, i always find the same problem: I JUST CANNOT READ IPENDING REGISTER!!:confused:. 

to make sure, i wrote the following program: 

 

.text 

again: rdctl r23,ipending 

br again 

 

and i passed it to the monitor program, i've changed the ipending register's value randomly. NONE of the values wheye loaded to r23! 

is this a common problem? does anyone knows what to do??? 

i expect a fast respond as like i said i'm working on my final year project and every day counts 

 

thx in advance ;)
0 Kudos

Link Copied

0 Replies
Reply

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.