bywuu
Joined: 04 Aug 2011
Posts: 29
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 Posted: Tue Jan 31, 2012 8:29 am Post subject: Maybe this is a stupid question... |
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Hi,
Now I want to know the position of the second comma in my string ,let's say the string is:"123456789,546321874541321,111",if I write this:
| Code: |
u8 endPos = 10;//the first comma position is set
u8 p[] = "123456789,546321874541321,111";
while(p[endPos]!=','){
endPos++;
}
memcpy(phoneNum,p+10,endPos-10);
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it is fine,but if I write this:
| Code: |
u8 endPos = 10;//the first comma position is set
u8 PROGMEM myProductStr[]="123456789,546321874541321,111";
while(myProductStr[endPos]!=','){
endPos++;
}
memcpy(phoneNum,myProductStr+10,endPos-10);
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it just hang...even if I changed it into:
| Code: |
while(rb(myProductStr[endPos])!=','){
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it still not work...I know it must be something about the PROGMEM.
So what is the correct methord?How to do it?
I now using a stupid way:
| Code: |
u8 * p = malloc(1);
memcpy(p,myProductStr+endPos,1);
p[1]=0;
while(p[0]!=',')
{
endPos++;
memcpy(p,myProductStr+endPos,1);
p[1]=0;
}
free(p);
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Do you have any better idea?
Thanks |
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pz
Joined: 12 Mar 2004
Posts: 1161
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| Posted: Wed Feb 01, 2012 10:54 am Post subject: |
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| Code: |
u8 PROGMEM myProductStr[]="123456789,546321874541321,111";
void somefnc()
{
u8 endPos = 10;//the first comma position is set
while(rb(myProductStr+endPos)!=','){
endPos++;
}
....
}
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So have the myProductStr[] out of call and rb() is a must. |
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