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ePWM CMPA作为DMA目的地址

ePWM CMPA作为DMA目的地址,将正弦表作为源地址(放在DMARAML4),Timer0触发输出SPWM,但是实际PWM输出为0

已经加上:SysCtrlRegs.MAPCNF.bit.MAPEPWM=1;且EALLOW了

之前已经测试过将变量作为DMA目的地址,然后main里一直将变量赋值给CMPA,是成功的,但是改为加上MAPEPWM=1并将CMPA作为DMA目的地址就失败了。。。

用的是28335

感谢各位^^