[参考译文] BOOSTXL-DRV8323RS：通过 SPI 读取后出现故障

https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1468803/boostxl-drv8323rs-fault-after-read-via-spi

工具与软件：

您好！

我的定制电路板使用 DRV8323RS、使用 GPIO11作为 CS 引脚、下载 universal_motorcontrol_lab、运行调试以查看它是否可以与 DRV 芯片通信、我所做的就是：  

1.设置 GPIO、 这是我的定制电路板、我 使用 GPIO11作为 CS 引脚

   GPIO_setPinConfig (GPIO_11_SPIA_STE)；
  GPIO_setDirectionMode (11、GPIO_DIR_MODE_OUT)；
  GPIO_setPadConfig (11、GPIO_PIN_TYPE_STD)；

2.在  DRV8323_setupSPI 函数内、 我插入代码以确保可以加载默认值(抱歉我没有 逻辑分析仪)

  drvDataNew0至 drvDataNew6用于 statReg00至  statReg06  

  调用 DRV8323_setupSPI 后、其默认值已无问题地读取(根据 DRV 的手册)

  drvDataNew0  = 0
  drvDataNew1  = 0
  drvDataNew2  = 0
  drvDataNew3  = 1023
  drvDataNew4  = 2047
  drvDataNew5  = 345
  drvDataNew6  = 643

void DRV8323_setupSPI(DRV8323_Handle handle, DRV8323_VARS_t *drv8323Vars)
{
    DRV8323_Address_e drvRegAddr;
    uint16_t drvDataNew;

    // Set Default Values
    // Manual Read/Write
    drv8323Vars->manReadAddr  = 0;
    drv8323Vars->manReadData  = 0;
    drv8323Vars->manReadCmd = false;
    drv8323Vars->manWriteAddr = 0;
    drv8323Vars->manWriteData = 0;
    drv8323Vars->manWriteCmd = false;

    // Read/Write
    drv8323Vars->readCmd  = false;
    drv8323Vars->writeCmd = false;

    // Read registers for default values
    // Read Status Register 0
    drvRegAddr = DRV8323_ADDRESS_STATUS_0;
    drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
    drv8323Vars->statReg00.all = drvDataNew;

    drvDataNew0 = drvDataNew;

    // Read Status Register 1
    drvRegAddr = DRV8323_ADDRESS_STATUS_1;
    drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
    drv8323Vars->statReg01.all = drvDataNew;

    drvDataNew1 = drvDataNew;

      // Read Control Register 2
    // all bit default value are 0, 6*PWM Mode
    drvRegAddr = DRV8323_ADDRESS_CONTROL_2;
    drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
    drv8323Vars->ctrlReg02.all = drvDataNew;

    drvDataNew2 = drvDataNew;

    // Read Control Register 3
    // all bit default value are 1, IDRIVEP_HS=1000mA, IDRIVEN_HS = 2000mA
    drvRegAddr = DRV8323_ADDRESS_CONTROL_3;
    drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
    drv8323Vars->ctrlReg03.all = drvDataNew;

    drvDataNew3 = drvDataNew;

    // Read Control Register 4
    // all bit default value are 1, TDRIVE=400ns, IDRIVEP_LS=1000mA, IDRIVEN_LS = 2000mA
    drvRegAddr = DRV8323_ADDRESS_CONTROL_4;
    drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
    drv8323Vars->ctrlReg04.all = drvDataNew;

    drvDataNew4 = drvDataNew;

    // Read Control Register 5
    // DEAD_TIME=100ns, OCP_DEG=4us, VDS_LVL=0.75V
    drvRegAddr = DRV8323_ADDRESS_CONTROL_5;
    drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
    drv8323Vars->ctrlReg05.all = drvDataNew;

    drvDataNew5 = drvDataNew;

    // Read Control Register 6
    // DEAD_TIME=100ns, OCP_DEG=4us, VDS_LVL=0.75V
    drvRegAddr = DRV8323_ADDRESS_CONTROL_6;
    drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
    drv8323Vars->ctrlReg06.all = drvDataNew;

    drvDataNew6 = drvDataNew;

    return;
} // end of DRV8323_setupSPI() function

到目前为止、我确信与 DRV 的通信是可以的、尤其是 GPIO CS 引脚工作正常！！！

================================

===  再次读取===时会发生奇怪的事情  

================================

尝试通过  main.c 循环内的 HAL_readDRVData (motorHandle_M1->halMtrHandle、&drvicVars_M1)读取最新更新值时

并通过 设置 drv8323Vars->readCmd = true 来强制执行读取操作；

void DRV8323_readData(DRV8323_Handle handle, DRV8323_VARS_t *drv8323Vars)
{
    DRV8323_Address_e drvRegAddr;
    uint16_t drvDataNew;

    drv8323Vars->readCmd = true;

    if(drv8323Vars->readCmd)
    {
        // Read registers for default values
        // Read Status Register 0
        drvRegAddr = DRV8323_ADDRESS_STATUS_0;
        drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
        drv8323Vars->statReg00.all  = drvDataNew;

        // Read Status Register 1
        drvRegAddr = DRV8323_ADDRESS_STATUS_1;
        drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
        drv8323Vars->statReg01.all  = drvDataNew;

        // Read Control Register 2
        drvRegAddr = DRV8323_ADDRESS_CONTROL_2;
        drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
        drv8323Vars->ctrlReg02.all  = drvDataNew;

        // Read Control Register 3
        drvRegAddr = DRV8323_ADDRESS_CONTROL_3;
        drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
        drv8323Vars->ctrlReg03.all  = drvDataNew;

        // Read Control Register 4
        drvRegAddr = DRV8323_ADDRESS_CONTROL_4;
        drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
        drv8323Vars->ctrlReg04.all  = drvDataNew;

        // Read Control Register 5
        drvRegAddr = DRV8323_ADDRESS_CONTROL_5;
        drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
        drv8323Vars->ctrlReg05.all  = drvDataNew;

        // Read Control Register 6
        drvRegAddr = DRV8323_ADDRESS_CONTROL_6;
        drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
        drv8323Vars->ctrlReg06.all  = drvDataNew;


        drv8323Vars->readCmd = false;
    }

    // Manual read from the DRV8323
    if(drv8323Vars->manReadCmd)
    {
        // Custom Read
        drvRegAddr = (DRV8323_Address_e)(drv8323Vars->manReadAddr << 11);
        drvDataNew = DRV8323_readSPI(handle, drvRegAddr);
        drv8323Vars->manReadData = drvDataNew;

        drv8323Vars->manReadCmd = false;
    }

  
    return;
}  // end of DRV8323_readData() function

它返回 drvicVars_M1值：

statReg00 = 0   
statReg01 = 0
statReg02 = 0
statReg03 = 769
statReg04 = 1
statReg05 = 1
statReg00 = 1  

我的结论是当再次读取值,这是原因设置腐败...  

如果阅读过程有任何错误、请提供帮助？  

Danny