problem in C language write .txt

cwfw

please read the code:

when I ready try to generate a .hex file for this code, the system said 'FILE' and 'fp' are undefined identifier. Do anyone know what happen?

What compiler you use？ I don't have any problem after compiled your program

cwfw

Invi6666 發表於 2012-4-2 10:34 PM

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What compiler you use？ I don't have any problem after compiled your program

Keil uVision2

I use this to generate a .hex file.

mp0801

I think Keil uVision2 is not support FILE function. You need ensure keil c library
have FILE function and include it.

cwfw

mp0801 發表於 2012-4-3 06:56 AM

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I think Keil uVision2 is not support FILE function. You need ensure keil c library
have FILE functio ...

I am sorry, can you tell me more. Do I need to include some library or use other command?
...

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mp0801

Keil C is support embedded system platform. Just like 8051, ARM ......
It c library is not same with computer C(GCC).
Keil C have not all C(GCC) library function.
You use FILE maybe include <stdio.h>, but Keil C <stdio.h>  must have FILE function.
I remember Keil C is not support FILE function.
If you want create HEX file, you can try computer C platform.(window,linux,...)

cwfw

mp0801 發表於 2012-4-3 09:03 PM

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Keil C is support embedded system platform. Just like 8051, ARM ......
It c library is not same with ...

sorry, don't understand.
computer C plarform?
...

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EdisonX

cwfw 發表於 2012-4-4 05:11 PM

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sorry, don't understand.
computer C plarform?
you mean using keil C in linux or what???????

what reason makes you to use keil C ?

mp0801

window 7 is OK, and I design some thing for embedded system.
So I have some experience for using Keil C

cwfw

EdisonX 發表於 2012-4-5 03:27 AM

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what reason makes you to use keil C ?

it's one part of my project actually.

EdisonX

execute me, can I answer those in Chinese ? Orz

I don't know why using file stream instructions in embedded system ,
but I think this action is not rational.

FILE struct is defined in <stdio.h> header
but Keil C has no this header, the reason as below description.

Microprocessor is not personal computer (PC).
Is there any disc on the system ?

If not, it means there is no disc, no operation system, no document system.
...

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cwfw

EdisonX 發表於 2012-4-5 04:22 PM

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execute me, can I answer those in Chinese ? Orz

I don't know why using file stream instructions in  ...

you can answer in english, of course.
...

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mp0801

Yes or No ? Actually, Keil C is not support file system, but I think you
can search third party distribution. Maybe you can find it or write a
new FILE function for yourself.

EdisonX

As mp0801 said,
" Keil C is not support file system " ,
even the full version of keil C  has no those instructions ( or header ) .

cwfw

mp0801 發表於 2012-4-5 06:19 PM

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Yes or No ? Actually, Keil C is not support file system, but I think you
can search third party dist ...

I am sorry, you can answer in Chinese.
I want to ask what if I write the data to excel? will it work? because my project must use keli C, so I must find a way to store the data, in txt or in excel is ok.
...

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