程序计数器滞留在0xFFFF_FFFF

大家好，

我正在尝试使用SPC5-UDESDK加密狗和UDE软件对SPC570S40E1 mcu进行编程和调试。我能够在没有任何问题的情况下编程修改版本的SPC570Sxx_RLA CAN测试应用程序的示例代码。然后我尝试将引脚58设置为来自mcu引脚向导的GPIO输出。在再次对mcu进行编程之后，UDE说“无法确定用户应用程序运行状态！假设仍在运行”，程序计数器停留在0xFFFF_FFFF。电源循环后，PORST引脚不会切换下降沿。

我想我被困在重置序列的上电。任何人都可以推荐一种前进的方式，这样我至少可以擦掉闪存吗？将PORST手动强制为低位修正是否会使序列移至0阶段及之后？

提前致谢。



以下为原文

Hi all,

I am trying to program and debug an SPC570S40E1 mcu using the SPC5-UDESDK dongle and the UDE software. I was able to program a modified version of the SPC570Sxx_RLA CAN Test Application for Discovery sample code without any problems at first. Then I tried to set pin 58 as a GPIO output from the mcu pin wizard. After programming the mcu again, UDE says "Failed to determine user application running state! Assume still running" and the program counter is stuck at 0xFFFF_FFFF. The PORST pin is not toggling a falling edge after a power cycle.

I think I am stuck at Power Up of the reset sequence. Can anyone recommend a way to go forward so that I can at least erase the flash memory? Would forcing PORST manually to low fix make the sequence move to Phase 0 and onwards?

Thanks in advance.