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请问,使用28027烧些flash复位后则会跳入BOOT ROM 循环,是什么原因?

使用28027烧些flash复位后则会跳入BOOT ROM 循环,直接连接仿真器在debug上按run,程序运行正常,但是点击复位或者重新上电,都会跳入BOOT ROM段的,在地址3ff6xx中循环,原因不明。。

我想从flash中启动,是不是一定要将GPIO34和GPIO37上拉???