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DM8127 control module寄存器只能读不能写



在CCS上编写DM8127 ARM裸机工程,发现control module寄存器只能读不能写,查看资料发现是必须工作在主管特权模式下才能写,但我没找到配置那个寄存器才能配置成主管/超级用户模式,求知道的大神帮助。