为什么CC2640 的SPI只能初始化SPI0，不能初始化打开SPI1？

当打开SPI0的时候初始化正常，当打开SPI1的时候就返回NULL，进入While（1）死循环。我将SPI1和SPI0定义的端口进行了调换，结果也是一样。
/* SPI Board */
#define Board_SPI0_MISO IOID_8 /* RF1.20 */
#define Board_SPI0_MOSI IOID_9 /* RF1.18 */
#define Board_SPI0_CLK IOID_10 /* RF1.16 */
#define Board_SPI0_CSN PIN_UNASSIGNED
#define Board_SPI1_MISO IOID_27
#define Board_SPI1_MOSI IOID_28
#define Board_SPI1_CLK IOID_30
#define Board_SPI1_CSN IOID_26

const PIN_Config BoardGpioInitTable[] = {

Board_RLED | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX, /* LED initially off */
Board_GLED | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX, /* LED initially off */
Board_BTN1 | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_BOTHEDGES | PIN_HYSTERESIS, /* Button is active low */
Board_BTN2 | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_BOTHEDGES | PIN_HYSTERESIS, /* Button is active low */
Board_SPI_FLASH_CS | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL | PIN_DRVSTR_MIN, /* External flash chip select */
Board_UART_RX | PIN_INPUT_EN | PIN_PULLDOWN, /* UART RX via debugger back channel */
Board_UART_TX | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL, /* UART TX via debugger back channel */
Board_SPI0_MOSI | PIN_INPUT_EN | PIN_PULLDOWN, /* SPI master out - slave in */
Board_SPI0_MISO | PIN_INPUT_EN | PIN_PULLDOWN, /* SPI master in - slave out */
Board_SPI0_CLK | PIN_INPUT_EN | PIN_PULLDOWN, /* SPI clock */

//Board_SPI1_CSN | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL, /* SX1278 select */
Board_SPI1_MOSI | PIN_INPUT_EN | PIN_PULLDOWN, /* SPI master out - slave in */
Board_SPI1_MISO | PIN_INPUT_EN | PIN_PULLDOWN, /* SPI master in - slave out */
Board_SPI1_CLK | PIN_INPUT_EN | PIN_PULLDOWN, /* SPI clock */
//Board_RF_RST | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL, /* SX1278 Reset*/

PIN_TERMINATE
};

void SX1278_Init(void)
{
hsx1278Pins = PIN_open(&sx1278Pins, sx1278PinsCfg);

if(hsx1278Pins == NULL)
{
while(1);
}

SPI_init();
SPI_Params_init(&SbpSpiParams);
SbpSpihandle = SPI_open(CC2650_LAUNCHXL_SPI1, &SbpSpiParams);
if(SbpSpihandle == NULL )
{
while(1);
}


Radio = RadioDriverInit();
Radio->Init();
}