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romelec
Joined: 14 Mar 2008
Posts: 1
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| dsPIC33, basic program, big problem... |
 Posted: Fri Mar 14, 2008 4:09 am |
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Hi,
I am using a dsPIC33FJ256MC710, look at this small code:
| Code: | void main()
{
int8 ind;
int8 tab[10];
fprintf(COM1,"test...\n");
delay_ms(500);
tab[0] = 3;fprintf(COM1,"tab[0]=%d\n",tab[0]);
tab[1] = 9;fprintf(COM1,"tab[1]=%d\n",tab[1]);
tab[2] = 16;fprintf(COM1,"tab[2]=%d\n",tab[2]);
tab[3] = 35;fprintf(COM1,"tab[3]=%d\n",tab[3]);
for(ind=0;ind<10;ind=ind+1)
{
tab[ind] = ind;
fprintf(COM1,"ind=%d tab[ind]=%d\n",ind,tab[ind]);
delay_ms(500);
}
} |
very basic and should not cause any problem, isn't it ?
so know let's have a look at the result
| Code: | test...
tab[0]=6
tab[1]=6
tab[2]=6
tab[3]=6
ind=3 tab[ind]=54
ind=3 tab[ind]=0
ind=3 tab[ind]=0
ind=3 tab[ind]=0
ind=3 tab[ind]=0
ind=3 tab[ind]=0
ind=3 tab[ind]=0
ind=3 tab[ind]=0
ind=3 tab[ind]=0
ind=3 tab[ind]=0
ind=3 tab[ind]=0
at this point the message is always the same until i reset the pic |
if i use 16 bits integers:
| Code: | test...
tab[0]=3
tab[1]=9
tab[2]=16
tab[3]=35
ind=0 tab[ind]=0
ind=1 tab[ind]=2
ind=2 tab[ind]=4
ind=3 tab[ind]=6
ind=4 tab[ind]=8
ind=5 tab[ind]=10
ind=6 tab[ind]=12
ind=7 tab[ind]=14
ind=8 tab[ind]=16
ind=9 tab[ind]=18 |
and 32bits !
| Code: | test...
tab[0]=3
tab[1]=9
tab[2]=16
tab[3]=35
ind=0 tab[ind]=0
ind=1 tab[ind]=262148
ind=2 tab[ind]=524296
ind=3 tab[ind]=786444
ind=4 tab[ind]=1048592
ind=5 tab[ind]=1310740
ind=6 tab[ind]=1572888
ind=7 tab[ind]=1835036
ind=8 tab[ind]=2097184
ind=9 tab[ind]=2359332 |
Maybe you understand the problem, but me absolutely no 
using microchip C30 it works of course very well.
Do you see a solution, except migrate my program to microchip compiler ?
(I have just sent a mail et the support)
Romain. |
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murtis
Joined: 12 Aug 2007
Posts: 41
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| try... |
| Posted: Fri Mar 14, 2008 7:43 am |
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hi,
this is the float print but %d is using integer print
fprintf(COM1,"tab[3]=%d\n",tab[3]);
and also, ind and tab[10] is identificated as an integer number.
May be,
you can solve the problem if you are using the code written like below
printf(COM1,"ind=%d tab[ind]=%d\n",ind,tab[ind]);
and also, you should try 'putc' command.
_________________
MurtiS |
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