暂停调试器时 STM32 冻结外围设备 [英] STM32 Freezing periphirals when pausing the debugger

问题描述

调试器可以在到达断点或用户暂停代码执行时停止执行 Cortex 中的代码.但是，当 cortex 在暂停状态下停止执行代码时，调试器是否会冻结其他外围设备，例如 DMA、UART 和 TIMERS?

Debugger can stop execution of code in Cortex when it reaches a breakpoint or user pauses the execurion of code. But does debugger freeze other periphirals like DMA, UART and TIMERS when cortex stops execuring the code in pause state?

推荐答案

你只能持有 time/r 依赖外设.

You can only hold time/r depend peripherals.

我在进入主函数时调用以下代码:

I call the following code on entering the main function:

  DBGMCU->APB1FZ |= DBGMCU_APB1_FZ_DBG_TIM2_STOP | DBGMCU_APB1_FZ_DBG_TIM3_STOP | 
                    DBGMCU_APB1_FZ_DBG_TIM4_STOP | DBGMCU_APB1_FZ_DBG_TIM5_STOP);

  DBGMCU->APB2FZ |= (DBGMCU_APB2_FZ_DBG_TIM19_STOP);

如果您的代码遇到断点，这会停止多个计时器.如果您的 DMA 事务依赖于指定的计时器(如我的)，它也会隐式停止，否则不会.

This stops several timers if your code hit a breakpoint. If your DMA transactions depends on the specified timer (like mine) it will also implicitly stop otherwise not.

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