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CLA读取EPWM寄存器的值都是0



在CLA中读取EPWM寄存器的值,在CPU2中EPWM模块初始化前给周期寄存器变量赋值,周期寄存器变量定义在CPUTOCLA的RAM区间,在CLA中观察周期寄存器变量值是对的,但EPWM模块周期寄存器值是0;在CLA中给EPMW模块比较寄存器直接赋值,用观测变量再去读比较寄存器的值也是0.