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ABZ信号都已经送到DSP的引脚上了，而且计数也正确，就是Z信号一直检测不到，编码器的位置每次都不一样，QEP的配置如下：
LDP #QEPCTL2>>7 SPLK #0000001100001000B,QEPCTL2 ;5432109876543210 SPLK #3999,QPOSMAX2 SPLK #0,QPOSMAX2+1 SPLK #0,QPOSINIT2 SPLK #0,QPOSINIT2+1
问题在哪
QPOSCNT在每次Z信号出现的时候不会清0，求救。
