Hello i tried to run port FreeRtos V9 to stm32f103 with iar compiler made project my self.but when debugging , after call vTaskStartScheduler(); microcontroller jump to ~~~ PUBWEAK SVCHandler SECTION .text:CODE:REORDER:NOROOT(1) SVCHandler B SVC_Handler ~~~ my main.c : https://www.dropbox.com/s/0adlqi7hobv7ply/main.c?dl=0 what is that for?also FreeRtos doesn’t work.

Second attempt at replying to this – don’t know what happened to the first, apologies if two replies turn up. You have to install the FreeRTOS itnerrupt handlers. See note 1 on this page of the FAQ:https://www.freertos.org/FAQHelp.html