[SOLVED] Ozone and fopen, how does it work ?

gammar · Oct 16th 2018, 11:31am

Hi,

Normally when using fopen(), I only need to specify the file name and the file gets created in the project directory (It works with IAR and Eclipse).
But with ozone, there is a problem. For example :

C Source Code

fopen ("Image.bmp", "w"); // This function return Null and no file is created

So, I tired this:

C Source Code

fopen ("\\Image.bmp", "w");

Now it works fine but the file get created in the C drive not in the project directory.

Is there a way to specify where the files created by Semi-hosting should be saved in Ozone ? And is It possible to save them in the project directory ?
I looked at the reference manual and i couldn't figure out how to do it. Could you help me ?

Thanks.

SEGGER - Nino · Oct 17th 2018, 8:38am

Hello,

Thank you for your inquiry.
Ozone does not implement fopen for semihosting as Ozone is a host PC application and does not execute code on the target device.
You can use fopen in your C source code however that runs on the target device which then will open the file on your host PC as expected.
More information can be found in the J-Link user manual UM08001 and in this thread: [SOLVED] Semihosting and JLink 6.32a

Best regards,
Nino

C Source Code

C Source Code

Share