写程序:void SPIx_WriteByte(u8 TxData){u8 j=0SPI_FLASH_CLK_LOW() clk=0if(TxData0x80) {SPI_FLASH_DI_HIGH()} mosi=1else {SPI_FLASH_DI_LOW()} mosi=0for(j=0j<3j) 延时 SPI_FLASH_CLK_HIGH() clk=1一个上升