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1443作为主机，希望向从机输出4096字节，但是SDK中SPI.h里配置的从机BUFF大小的变量为uint8_t类型，最多256，算上16位发送也只有512字节。宏定义中
请~/ti/drivers/spi/src/mibspi_dma.c代码里使能SPI_MULT_ICOUNT_SUPPORT，再重新编译。
