Hi,
First, what version of the S32 SDK are you using?
To use the trigger from the FTM0 you must enable FTM0 Init trigger generation.
You can enable it using the following call to FTM hal function:
FTM_HAL_SetInitTriggerCmd(FTM0, true);
This call should be added after calling the FTM initialization function(FTM_DRV_Init).
Please let me know if it worked.
Best regards,
Rares