Hi Rémi,
I would recommend you to use the latest tool version (KSDK v1.1.0). You can use the following video as reference to create your application, it explains how to use Processor Expert to configure the KSDK GPIO Peripheral Driver with the component fsl_gpio in Kinetis Design Studio:
Video Link : 3195
Here is the link where you can download Kinetis SDK 1.1.0 Mainline:
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=KINETIS-SDK&tab=Design_Tools_Tab
Hope it helps!
Best Regards,
Carlos Mendoza
Technical Support Engineer
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