Design and Realization of Mutual Communication Based on SPI between DSP and MCU

A new design and realization of mutual communication based on SPI between DSP and MCU are presented.First,SPI along with its working principle and features of McBSP are introduced;then,a method of configuration of McBSP operation as SPI slave is analyzed and discussed;finally,the hardware circuit interface and software protocol of mutual communication between DSP and MCU are deeply analyzed and the shortage inherent in SPI for mutual communication is successfully solved