This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Overwrite weak Systick_handler function

nmcq over 1 year ago

Hi all,

I want to overwrite the weak systick_handler function for a stm32f745 chip - it is labeled as weak in the Src\startup_stm32f745xx.s(258) : EXPORT SysTick_Handler [WEAK]

startup file, but when I try to overwrite it anywhere else

(using the extern "C" configuration)

I get this: Error: L6200E: Symbol SysTick_Handler multiply defined (by irq_cm4f.o and gpio_base.o)

NOTE: I cannot edit the startup file, it is locked to my project.

Am I missing something else?

Thanks,

nmcq

Top replies

nmcq over 1 year ago in reply to nmcq +2 verified

Update: for this project I don't require the RTOS, so disabling that library fixed my issue.
Robert McNamara over 1 year ago +1 suggested

The issue is that both irq_cm4f.o and gpio_base.o have SysTick_Handler defined. You need to make sure you only have it in 1 file. There is no issue with startup_stm32f745xx.s.