That's the correct function to use. The implementation is here:
https://github.com/spark/firmware/blob/develop/hal/src/stm32f2xx/delay_hal_stm32f2xx.c#L38
That's the correct function to use. The implementation is here:
https://github.com/spark/firmware/blob/develop/hal/src/stm32f2xx/delay_hal_stm32f2xx.c#L38