It sounds like you have version 1.05 of Code Composer Studio for the
'C6211 DSP Starter Kit. It has a bug in the watch window. I'm not sure if a patch has been posted to the TI website yet or not. I know they are releasing a new version of Code Composer Studio in April. I'm sure it'll be fixed in that. -sgsns >-----Original Message----- >From: >Sent: Tuesday, March 14, 2000 4:01 PM >To: >Subject: [c6x] Where's the bug? >Hello All, >I got the TI c6211 DSK set and tried to follow the examples that they >have and I ran into problem. I am sure many of you who has the c6211 >DSK must have seen the following example. >In the TI's first example, the code is something like this: > >int dotp(short *m, short *n, int count); >#include <stdio.h> >#include "data.h" >#define COUNT 256 >short a[COUNT] = {A_ARRAY}; >short x[COUNT] = {X_ARRAY}; >volatile int y=0; >main () >{ > y=dot(a,x,COUNT); > y=dot(a,x,COUNT); > printf("y = %x hex \n",y); > printf("y = %y decimal \n",y); >} >int dotp(short *m, short *n, int count) >{ > int i=0; > int product=0; > int sum=0; > for (i=0; i<count; i++) > { > product = m[i]*n[i]; > sum += product; > } > return (sum); >} > >In data.h, they have the array a that runs from 1 to 256 >and the array x runs from 256 to 1. >The value for y is 2829056 which I got. >The problem is when I single stepped through the method dotp, >as soon as I stepped into the line which contains product=0, >both m[i] and n[i] suddenly took an a huge value and nomatter >how many times the for loop runs, the values of product and sum >are always zero (which are the initialization value). How can >this be the case. Why y has the correct value of 2829056 is even >stranger! I tried both hardware and software reset and have ran >the diagnosis test for the connections between the DSK and the >computer. Everythings looked fine except running the algorithm. >Can anyone help? > >Regards >John Lai >--------------------------------- >To Join: Send an email to >To Post: Send an email to >To Leave: Send an email to >Archives: http://www.egroups.com/group/c6x >Other Groups: http://www.dsprelated.com ______________________________________________________ |