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An embedded system is a computer system designed to perform one or a few dedicated functions, often with real-time computing constraints. It is embedded as part of a complete device often including hardware and mechanical parts.

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STM32 HAL_DELAY hangs with HAL_GetTick=0

As an advanced STM32 user I can say that you did not handle the SysTick interrupt. The HAL library enables the SysTick timer and interrupts for it. In stm32f4xx_it.c file add this function call: vo …
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