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F28335 启动失败,手动复位没反应。



控制板采用F28335芯片,程序从flash启动,GPIO82-85引脚已经硬件上拉,在板子正常工作时迅速断电再迅速上电,这时候板子程序启动不了,然后手动将复位引脚电平拉低,但是板子没有复位,断电后再上电就能正常启动了。板子正常工作时是可以手动复位的。请问手动复位不了是怎么回事?