Sign in

username:

password:



Not a member?

Search adsp



Search tips

Subscribe to adsp



adsp by Keywords

AD1819 | AD7332 | ADSP-2106 | ADSP-21060 | ADSP-21065L | ADSP-2116 | ADSP-21160M | ADSP-2181 | ADSP-218x | ADSP-219 | ADSP-2199 | ADSP219 | BF531 | BF532 | BF533 | BF535 | Blackfin | FFT | JTAG | LDF | SDRAM | SHARC | SPORT | UART | VDSP++ | VisualDSP

Ads

Discussion Groups

Discussion Groups | Analog Devices DSPs | irq problem again

Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).

  

Post a new Thread

irq problem again - Liyju Janardhan - Jan 11 11:25:00 2003



I am using adsp14060 and I am developing the software
on vdsp2.0++.

I have a problem with the IRQ1, on receiving the
interrupt the processor don't branch it to my isr.
I have found that the problem is because of my ldf
file.

This is my simple C progarm:

void main()
{
interrupt(SIG_IRQ1,irq1handler);
while(1)
idle;
} void irq1handler()
{
toggle0();
}

void toggle0()
{
int i;
for(i=0;i<500000;i++)
set_flag(SET_FLAG0, CLR_FLAG);
for(i=0;i<500000;i++)
set_flag(SET_FLAG0, SET_FLAG);
} when I compile with following in my ldf file, the irq1
interrupt get stored at 0x2061c
<ldf>
seg_RstIVT { TYPE(PM RAM) START(0x00020005)
END(0x000200ff) WIDTH(48) }
seg_KernCode { TYPE(PM RAM) START(0x00020100)
END(0x000205ff) WIDTH(48) }

seg_rth { TYPE(PM RAM) START(0x00020600)
END(0x00020694) WIDTH(48) }
seg_init { TYPE(PM RAM) START(0x00020695)
END(0x000209ff) WIDTH(48) }

</ldf>

that means the interrupt IRQ1 __lib_IRQ1I get stored
at
wrong location. That why it doesn't go to my isr.

But when I make following changes in ldf file

<ldf>
seg_rth { TYPE(PM RAM) START(0x00020000)
END(0x000200ff) WIDTH(48) } ^
seg_KernCode { TYPE(PM RAM) START(0x00020100)
END(0x000205ff) WIDTH(48) }

seg_init { TYPE(PM RAM) START(0x00020695)
END(0x000209ff) WIDTH(48) }

</ldf>

the interrupt irq1 get stored at 0x2001c and in
simulator it goes to my isr.
But when I download the program to my board, it
hangs
Remember I have removed segment RStIVT from my ldf
file.

Hope you have understood my problem.

Please help

Regards

Liyju
__________________________________________________



(You need to be a member of adsp -- send a blank email to adsp-subscribe@yahoogroups.com )