/*---------------------------------------------------------------------------------------------------------*/
/* Init SPI */
/*---------------------------------------------------------------------------------------------------------*/
/* Configure as a master, clock idle low, 32-bit transaction, drive output on falling clock edge and latch input on rising edge. */
/* Set IP clock divider. SPI clock rate = 2 MHz */
SPI_Open(SPI0, SPI_MASTER, SPI_MODE_0, 32, 2000000);
/* Select HCLK as the clock source of SPI0 */
CLK_SetModuleClock(SPI0_MODULE, CLK_CLKSEL1_SPI0_S_HCLK, MODULE_NoMsk);
/* Enable SPI0 peripheral clock */
CLK_EnableModuleClock(SPI0_MODULE);
/* Setup SPI0 multi-function pins */
SYS->P0_MFP &= ~(SYS_MFP_P04_Msk | SYS_MFP_P05_Msk | SYS_MFP_P06_Msk | SYS_MFP_P07_Msk);
SYS->P0_MFP |= (SYS_MFP_P04_SPISS | SYS_MFP_P05_MOSI | SYS_MFP_P06_MISO | SYS_MFP_P07_SPICLK);
最后就可以用发送函数了
/* Write to TX register */
SPI_WRITE_TX0(SPI0, g_au32SourceData[u32DataCount]);
/* Trigger SPI data transfer */
SPI_TRIGGER(SPI0);
/* Check SPI0 busy status */
while(SPI_IS_BUSY(SPI0));
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