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drv8301 的spi问题

Other Parts Discussed in Thread: DRV8301

我用drv8301驱动bldc,dsp给8301的spi配置好后,按理说8301的spi应该返回状态寄存器的值,为什么结果返回的都是高电平0xffff,有没有大神用过drv8301驱动板的,是8301有用问题还是别的问题,程序配置应该没问题,是ti给的源程序