cc3200 spi dma 传输程序，其中有3种传输方案(Cc3200 SPI DMA transport program, which has 3 transmission schemes)

cc3200作为AP，通过外部的spi与cc3200传输需要无线发送的数据，实现1.6MB的速度传输。(Cc3200, as a AP, transmits data that needs wireless transmission through the external SPI and cc3200 to achieve the speed of 1.6MB transmission.)