关于芯片说明中说支持SPI通讯,但芯片中只使用了SPICLK、SPISIMO、SPTENA、没有SPISOMI,那在DSP28335中,SPISOMI引脚是悬空还是怎么处理?
另外8568电源是5V供电的,DSP的SPI应该是3.3V,SPI电平是否需要转换?
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