write in .txt

atornes

Other Parts Discussed in Thread: TMS320C5515

Hello,

I want to use a code that stores the value of a variable in a file .txt. For that purpose, I began developing a simple code:

#include <stdio.h>

FILE *f;

void main (void)

{

f=fopen("example.txt","w");

fprintf(f,"Hello");

fclose(f);

}

When I build that, there is not any error, However, when I finish to debug this code, and I open the example.txt, there isn't anything inside.

I would be very grateful If you can help me with that.

over 12 years ago

Ki over 12 years ago

TI__Guru**** 473811 points

Did you run the program to completion (program reached the exit point of the application)?

atornes over 12 years ago in reply to Ki

Expert 1180 points

Yes, I did.

The steps that I follow are the next:

Build project

Launch Target configuration

In Debug session, Connect target and Load Program (here I choose the program.out wich contains the code that I wrote)

I push run buttom and when It arrives to the end, I push terminate all, and open the file.txt and nothing is written there.

Ki over 12 years ago in reply to atornes

TI__Guru**** 473811 points

Next step is to take a look at this wiki article on using C I/O. It covers a lot of the common issues when C I/O is not working as expected:

http://processors.wiki.ti.com/index.php/Tips_for_using_printf

Thanks

atornes over 12 years ago in reply to Ki

Expert 1180 points

I've already read, but I am not able to see anything that could help me with my problem.

I tried fprintf, putc, but anything is working.

I create a white file.txt an save it in my workspace. Every time, I run the program, when I terminate the sesion and return to the workspace, I open the file.txt, but anything is written.

Ki over 12 years ago in reply to atornes

TI__Guru**** 473811 points

Please provide a small, reproducible test case (ideally that would run on a simulator). This would be project + source + out file.

Thanks

atornes over 12 years ago in reply to Ki

Expert 1180 points

Hi,

I send you an archive file

3323.write_test.rar

Ki over 12 years ago in reply to atornes

TI__Guru**** 473811 points

Thanks.

I forgot to ask;

1) What is the full version number of CCS that you are using?

2) What exact target are you running on?

atornes over 12 years ago in reply to Ki

Expert 1180 points

I am using CCSv4.1 and TMS320C5515 EVM

Ki over 12 years ago in reply to atornes

TI__Guru**** 473811 points

Albert Torn�� said:
I am using CCSv4.1

That is a very old version. Would you mind updating your version to CCSv5.3?

atornes over 12 years ago in reply to Ki

Expert 1180 points

I also have CCSv5.3. I can try it, However, when we bought the TMS320C5515 EVM, We received a CD with v4.1 of CCS. I also need to work with CCSv4.1.

Ki over 12 years ago in reply to atornes

TI__Guru**** 473811 points

Albert Torn�� said:
I also have CCSv5.3. I can try it,

Thanks

Albert Torn�� said:
However, when we bought the TMS320C5515 EVM, We received a CD with v4.1 of CCS.

That was the available version of CCS at the time the EVM was packaged

Albert Torn�� said:
I also need to work with CCSv4.1.

What is your dependency on 4.1?

Thanks

atornes over 12 years ago in reply to Ki

Expert 1180 points

When I try to build the program in CCSv5.3 I get this error:

Compilation failure

memory. placement with alignment/blocking fails for section ".text" size

0x40f8 page 0. Available memory ranges:

DARAM1 size: 0x2000 unused: 0x2000 max hole: 0x2000

What can I do to solve this?

Ki over 12 years ago in reply to atornes

TI__Guru**** 473811 points

That error is documented here: http://processors.wiki.ti.com/index.php/Build_Errors_in_CCS#Error:_placement_fails_for_section_.22xxx.22

Thanks

atornes over 12 years ago in reply to Ki

Expert 1180 points

Ok,

I can fix the latest error by changing the size of memories in C5515.cmd

However, when I luad the program and then run, this messaeg appears:

Can't find a source file at "/tmp/TI_MKLIB4kQNZn/SRC/exit.c"

And then it gives to me two options:

View Disassemly or Locate File.

If I choose view disassembly, and I terminate the Debug session, nothins is written in the file.txt

atornes over 12 years ago in reply to Ki

Expert 1180 points

Hello!

First of all, thanks for your help. I could use fprintf succesfully.

However, I have another problems that i don't know how to fix it. I'll put all in the same thread:

1. When I buil the program I developed. I got this:

atornes over 12 years ago in reply to atornes

Expert 1180 points

2. When I launch a Debug Session, push connect Target and it finishes, the next sentence appearsa:

No source available for 0xff6adc. I can Load program anyway.

3. When I use fprintf, then printf does not work.

4. When I call nother function in main, fprintf and printf do not work

Ki over 12 years ago in reply to atornes

TI__Guru**** 473811 points

Sorry for the delayed response.

Albert Torn�� said:

2. When I launch a Debug Session, push connect Target and it finishes, the next sentence appearsa:

No source available for 0xff6adc. I can Load program anyway.

this is not an issue. It is simply warning that it cannot find any source file correlation with the current location of the program counter. This is normal if the PC is at some random address where there is no source.

Albert Torn�� said:

3. When I use fprintf, then printf does not work.

4. When I call nother function in main, fprintf and printf do not work

Looks like you have resolved your C I/O issues in this thread:

http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/p/263610/922914.aspx

Thanks

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write in .txt