STM32HAL library modifies Hal_Delay to us-level delay

Prerequisites

• STM32CudeMX generated files (best)
• Allocation of clock with system and clock without system
• Before rewriting, it is necessary to test that Hal_Delay can perform MS-level delay under normal conditions

Description

This modification is my test under FreeRTOS, and the principle is the same.Compared with the punctual atomic solution, I personally feel that it will be general, simple, reliable, and many.At present, no problems have been found in the test. If you find any problems during use, please leave a message

Code to modify

• stm32f4xx_hal.c, the red circle part is the code that needs to be modified.
• stm32f4xx_hal.h, add this code in the red circle

 HAL_TICK_FREQ_1HZ = 1000U,

stm32f4xx_hal.c

stm32f4xx_hal.h