spi初始化open总是返回null

user4820439 说：

    //spi  CS  init
   PIN_Config CSPinTable[] = {
       CC1310_LAUNCHXL_SPI0_MOSI | PIN_INPUT_EN | PIN_PULLDOWN,                                            /* SPI master out - slave in */
       CC1310_LAUNCHXL_SPI0_MISO | PIN_INPUT_EN | PIN_PULLDOWN,                                            /* SPI master in - slave out */
       CC1310_LAUNCHXL_SPI0_CLK | PIN_INPUT_EN | PIN_PULLDOWN,
       CC1310_LAUNCHXL_SPI0_CS1 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH  | PIN_PUSHPULL | PIN_DRVSTR_MAX,
       PIN_TERMINATE
    };
    CSPinHandle = PIN_open(&CSPinState, CSPinTable);
    PIN_setOutputValue(CSPinHandle, CC1310_LAUNCHXL_SPI0_CS1, 1);

    SPI_init();
    SPI_Params_init(&spiParams);
    spiParams.dataSize = 8;
    spiParams.frameFormat = SPI_POL0_PHA0;
    //spiParams.bitRate = 2812500;
    spi = SPI_open(Board_SPI0, &spiParams);

然后返回的spi总是等于NULL，请问它返回空，可能是那些方面的原因呢

你先把上面的引脚配置去掉试试。