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I tried to send a LIN frame by creating a task .The code didn't conatin any error but the frame wasn't sent What could be the problem ? This is my project 
I'm using stm32H750B-DK and i'm trying to send a frame via LIN protocole every one second .but when i run the code nothing happen .when debugging i found that the code blocked in an endless loop in SCB_EnableDCache() function