[参考译文] MSP-EXP432E401Y：我在此处传递的函数参数是什么？

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1379411/msp-exp432e401y-what-do-i-pass-as-the-function-argument-here

工具与软件：

您好！

我有 MSP-EXP432E401Y Launchpad 和 ADS131M08评估模块。 我能够在 ADS 模块(SPI 接口)中写入并重新读取已写入的寄存器。 有一个 TI 提供的示例代码。

20多年来、我与任何节目都不接触。 因此、我希望得到一些帮助。 我参考该示例函数来读取数据(下面的代码)。  

我应该在第40行中为函数提供什么作为函数参数？ 它是一个指针、但参数必须是什么？ 如何在第40行调用该函数？ 我看到它存储了来自所有通道的状态和数据值、但我需要向该函数提供什么参数？ 是通道编号、还是数组的地址或其他东西？

bool bit_status = ReadData (？？)；//通道编号？

//****************************************************************************
//
// Channel data structure
//
//****************************************************************************

typedef struct
{
    uint16_t response;
    uint16_t crc;
    int32_t channel0;

#if (CHANNEL_COUNT > 1)
    int32_t channel1;
#endif
#if (CHANNEL_COUNT > 2)
    int32_t channel2;
#endif
#if (CHANNEL_COUNT > 3)
    int32_t channel3;
#endif
#if (CHANNEL_COUNT > 4)
    int32_t channel4;
#endif
#if (CHANNEL_COUNT > 5)
    int32_t channel5;
#endif
#if (CHANNEL_COUNT > 6)
    int32_t channel6;
 #endif
 #if (CHANNEL_COUNT > 7)
    int32_t channel7;
#endif
} adc_channel_data;





bool readData(adc_channel_data *DataStruct)
{
    int i;
    uint8_t crcTx[4]                        = { 0 };
    uint8_t dataRx[4]                       = { 0 };
    uint8_t bytesPerWord                    = getWordByteLength();

#ifdef ENABLE_CRC_IN
    // Build CRC word (only if "RX_CRC_EN" register bit is enabled)
    uint16_t crcWordIn = calculateCRC(&DataTx[0], bytesPerWord * 2, 0xFFFF);
    crcTx[0] = upperByte(crcWordIn);
    crcTx[1] = lowerByte(crcWordIn);
#endif

    /* Set the nCS pin LOW */
    setCS(LOW);

    // Send NULL word, receive response word
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->response = combineBytes(dataRx[0], dataRx[1]);

    // (OPTIONAL) Do something with the response (STATUS) word.
    // ...Here we only use the response for calculating the CRC-OUT
    //uint16_t crcWord = calculateCRC(&dataRx[0], bytesPerWord, 0xFFFF);

    // (OPTIONAL) Ignore CRC error checking
    uint16_t crcWord = 0;

    // Send 2nd word, receive channel 1 data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(crcTx[i]);
    }
    DataStruct->channel0 = signExtend(&dataRx[0]);
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

#if (CHANNEL_COUNT > 1)

    // Send 3rd word, receive channel 2 data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->channel1 = signExtend(&dataRx[0]);
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

#endif
#if (CHANNEL_COUNT > 2)

    // Send 4th word, receive channel 3 data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->channel2 = signExtend(&dataRx[0]);
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

#endif
#if (CHANNEL_COUNT > 3)

    // Send 5th word, receive channel 4 data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->channel3 = signExtend(&dataRx[0]);
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

#endif
#if (CHANNEL_COUNT > 4)

    // Send 6th word, receive channel 5 data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->channel4 = signExtend(&dataRx[0]);
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

#endif
#if (CHANNEL_COUNT > 5)

    // Send 7th word, receive channel 6 data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->channel5 = signExtend(&dataRx[0]);
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

#endif
#if (CHANNEL_COUNT > 6)

    // Send 8th word, receive channel 7 data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->channel6 = signExtend(&dataRx[0]);
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

#endif
#if (CHANNEL_COUNT > 7)

    // Send 9th word, receive channel 8 data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->channel7 = signExtend(&dataRx[0]);
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

#endif

    // Send the next word, receive CRC data
    for (i = 0; i < bytesPerWord; i++)
    {
        dataRx[i] = spiSendReceiveByte(0x00);
    }
    DataStruct->crc = combineBytes(dataRx[0], dataRx[1]);

    /* NOTE: If we continue calculating the CRC with a matching CRC, the result should be zero.
     * Any non-zero result will indicate a mismatch.
     */
    //crcWord = calculateCRC(&dataRx[0], bytesPerWord, crcWord);

    /* Set the nCS pin HIGH */
    setCS(HIGH);

    // Returns true when a CRC error occurs
    return ((bool) crcWord);
}

谢谢

RAM。