Reset_Handler

Understanding the Power-On Sequence of Cortex-M MCUs in 3 Minutes

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Understanding the Power-On Sequence of Cortex-M MCUs in 3 Minutes

Hello everyone, today I, Xiao Zhao, will share some ARM core knowledge with you. Taking the Cortex-M4 as an example, when the MCU powers on, it retrieves the stack pointer from address 0x0 and fetches the address of the first function to be executed by the MCU from 0x4 (the address is four bytes, so … Read more

Understanding the Execution of the Main Function in Microcontrollers

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Understanding the Execution of the Main Function in Microcontrollers

Follow+Star Public Account, don’t miss exciting content Author | strongerHuang WeChat Official Account | strongerHuang Why is the main function directly called in the reset interrupt service routine? Does that mean all programs are executed in the reset interrupt? First, Reset_Handler is an interrupt of the microcontroller, and secondly, the main function is indeed called … Read more