[参考译文] CCS/MSP432P401R：CCS®︎MSP432P401R

Vinod，

我想提供帮助。 您是否可以共享代码？

函数启动SPI  寄存 器级别示例

我在功能AS中进行了更改

EUSCI_B_CTLW0_sel__ACLK 到EUSCI_B_CTLW0_sel__SMCLK

void spi_inti()
｛
   P1->SEL0 || BIT4 | BIT5 | BIT6 | BIT7； //将4-SPI引脚设置为第二个函数

   EUSCI_B0->CTLW0 |= EUSCI_B_CTLW0_SWRST;//将状态机置于复位状态

   EUSCI_B0->CTLW0 = EUSCI_B_CTLW0_SWRST |//保持重置状态
           EUSCI_B_CTLW0_MST |//            SPI主中继器
           EUSCI_B_CTLW0_SYNC |//           同步模式
           EUSCI_B_CTLW0_CKPH |//           时钟极性高
           EUSCI_B_CTLW0_MSB |//            MSB优先
           EUSCI_B_CTLW0_MODE_1 |//         4引脚模式
           EUSCI_B_CTLW0_STEM |//           STE模式选择
           EUSCI_B_CTLW0_sel__ACLK;      // ACLK                                /* changed EUSCI_B_CTLW0_sel__SMCLK；   SMCLK    */
  
   EUSCI_B0->BRW = 0x00；                  ///2，fBitClock = fBRCLK/(UCBRx+1)。 主时钟为3MHz/(BW)
   EUSCI_B0->CTLW0 &=~EUSCI_B_CTLW0_SWRST;//**初始化USCI状态机**
}