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goodgoodstudy
硬件错误中断中，调用print_call_stack前，sp已经减去了R0~R3, R12, LR,PC,xPSR这些寄存器地址，不明白if ((depth == 2) && regs_saved_lr_is_valid && (pc == buffer[1])) 何时才会被触发？ 感谢解惑！😃