[参考译文] TMS570LC4357：SPI3芯片选择问题

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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/992705/tms570lc4357-issue-with-spi3-chip-select
器件型号：TMS570LC4357
大家好、
我们将 TMS570LC4357处理器用于我们的项目。我们的要求是在主模式下配置 SPI、并与通过可用芯片选择连接的从器件建立通信。对于此操作、我们使用在主模式下配置的 SPI3、它在4模式下使用、在该模式下、我们将与 SPI3CLK、SPI3SOMI、SPI3MISO 一起使用 SPI3_CS0。
在这里、外设时钟、即 VCLK1被配置为90MHz、而 SPICLK 被配置为400kHz。 SPI3用于8位字符长度、启用时钟模式和时钟极性。 (使用 FMT0寄存器)。
正如参考示例中提供的那样、我们初始化 SPI3并尝试与从器件建立通信。
我们将所有必需的引脚配置为附加的参考代码。
我们观察到、由于芯片选择未生效或失效、因此没有数据被发送或接收。我们尝试探测 SPI 引脚、但未观察到数据、芯片选择持续处于高电平。
我们还验证了 PIN_mux 配置。我们现在陷入僵局，无法继续前进，也无法取得任何突破。
作为一项工作、我们尝试将 SPI3CS0配置为 GIO、并尝试手动将其置为有效/置为无效以进行传输和接收。
在此期间、我们收到了错误数据、我们怀疑其他外部信号会干扰所需的芯片选择。
随附的是芯片选择配置为 GIO 时的波形。 (突出显示了芯片选择的错误取消置位)
此致
Apporva
#include "HL_spi.h"
#include "HL_sys_vim.h"
/* USER CODE BEGIN (1) */
/* USER CODE END */

/** @struct g_spiPacket
*   @brief globals
*
*/
static volatile struct g_spiPacket
{
    spiDAT1_t g_spiDataFormat;
    uint32  tx_length;
    uint32  rx_length;
    uint16  * txdata_ptr;
    uint16  * rxdata_ptr;
    SpiDataStatus_t tx_data_status;
    SpiDataStatus_t rx_data_status;
} g_spiPacket_t[5U];

/** @fn void spiInit(void)
*   @brief Initializes the SPI Driver
*
*   This function initializes the SPI module.
*/
/* SourceId : SPI_SourceId_001 */
/* DesignId : SPI_DesignId_001 */
/* Requirements : HL_CONQ_SPI_SR7, HL_CONQ_SPI_SR8 */
void spiInit(void)
{
/* USER CODE BEGIN (2) */
/* USER CODE END */




    /** @b initialize @b SPI3 */

    /** bring SPI out of reset */
    spiREG3->GCR0 = 0U;
    spiREG3->GCR0 = 1U;

    /** SPI3 master mode and clock configuration */
    spiREG3->GCR1 = (spiREG3->GCR1 & 0xFFFFFFFCU) | ((uint32)((uint32)1U << 1U)  /* CLOKMOD */
                  | 1U);  /* MASTER */

    /** SPI3 enable pin configuration */
    spiREG3->INT0 = (spiREG3->INT0 & 0xFEFFFFFFU) | (uint32)((uint32)0U << 24U);  /* ENABLE HIGHZ */

    /** - Delays */
    spiREG3->DELAY = (uint32)((uint32)0U << 24U)  /* C2TDELAY */
                   | (uint32)((uint32)0U << 16U)  /* T2CDELAY */
                   | (uint32)((uint32)0U << 8U)   /* T2EDELAY */
                   | (uint32)((uint32)0U << 0U);  /* C2EDELAY */

    /** - Data Format 0 */
    spiREG3->FMT0 = (uint32)((uint32)0U << 24U)  /* wdelay */
                  | (uint32)((uint32)0U << 23U)  /* parity Polarity */
                  | (uint32)((uint32)0U << 22U)  /* parity enable */
                  | (uint32)((uint32)0U << 21U)  /* wait on enable */
                  | (uint32)((uint32)0U << 20U)  /* shift direction */
                  | (uint32)((uint32)1U << 17U)  /* clock polarity */
                  | (uint32)((uint32)1U << 16U)  /* clock phase */
                  | (uint32)((uint32)224U << 8U) /* baudrate prescale */
                  | (uint32)((uint32)8U << 0U);  /* data word length */

    /** - Data Format 1 */
    spiREG3->FMT1 = (uint32)((uint32)0U << 24U)  /* wdelay */
                  | (uint32)((uint32)0U << 23U)  /* parity Polarity */
                  | (uint32)((uint32)0U << 22U)  /* parity enable */
                  | (uint32)((uint32)0U << 21U)  /* wait on enable */
                  | (uint32)((uint32)0U << 20U)  /* shift direction */
                  | (uint32)((uint32)0U << 17U)  /* clock polarity */
                  | (uint32)((uint32)0U << 16U)  /* clock phase */
                  | (uint32)((uint32)89U << 8U) /* baudrate prescale */
                  | (uint32)((uint32)16U << 0U);  /* data word length */

    /** - Data Format 2 */
    spiREG3->FMT2 = (uint32)((uint32)0U << 24U)  /* wdelay */
                  | (uint32)((uint32)0U << 23U)  /* parity Polarity */
                  | (uint32)((uint32)0U << 22U)  /* parity enable */
                  | (uint32)((uint32)0U << 21U)  /* wait on enable */
                  | (uint32)((uint32)0U << 20U)  /* shift direction */
                  | (uint32)((uint32)0U << 17U)  /* clock polarity */
                  | (uint32)((uint32)0U << 16U)  /* clock phase */
                  | (uint32)((uint32)89U << 8U) /* baudrate prescale */
                  | (uint32)((uint32)16U << 0U);  /* data word length */

    /** - Data Format 3 */
    spiREG3->FMT3 = (uint32)((uint32)0U << 24U)  /* wdelay */
                  | (uint32)((uint32)0U << 23U)  /* parity Polarity */
                  | (uint32)((uint32)0U << 22U)  /* parity enable */
                  | (uint32)((uint32)0U << 21U)  /* wait on enable */
                  | (uint32)((uint32)0U << 20U)  /* shift direction */
                  | (uint32)((uint32)0U << 17U)  /* clock polarity */
                  | (uint32)((uint32)0U << 16U)  /* clock phase */
                  | (uint32)((uint32)89U << 8U) /* baudrate prescale */
                  | (uint32)((uint32)16U << 0U);  /* data word length */

    /** - set interrupt levels */
    spiREG3->LVL = (uint32)((uint32)0U << 9U)  /* TXINT */
                 | (uint32)((uint32)0U << 8U)  /* RXINT */
                 | (uint32)((uint32)0U << 6U)  /* OVRNINT */
                 | (uint32)((uint32)0U << 4U)  /* BITERR */
                 | (uint32)((uint32)0U << 3U)  /* DESYNC */
                 | (uint32)((uint32)0U << 2U)  /* PARERR */
                 | (uint32)((uint32)0U << 1U) /* TIMEOUT */
                 | (uint32)((uint32)0U << 0U);  /* DLENERR */

    /** - clear any pending interrupts */
    spiREG3->FLG |= 0xFFFFU;

    /** - enable interrupts */
    spiREG3->INT0 = (spiREG3->INT0 & 0xFFFF0000U)
                  | (uint32)((uint32)0U << 9U)  /* TXINT */
                  | (uint32)((uint32)0U << 8U)  /* RXINT */
                  | (uint32)((uint32)0U << 6U)  /* OVRNINT */
                  | (uint32)((uint32)0U << 4U)  /* BITERR */
                  | (uint32)((uint32)0U << 3U)  /* DESYNC */
                  | (uint32)((uint32)0U << 2U)  /* PARERR */
                  | (uint32)((uint32)0U << 1U) /* TIMEOUT */
                  | (uint32)((uint32)0U << 0U);  /* DLENERR */

    /** @b initialize @b SPI3 @b Port */

    /** - SPI3 Port output values */
    spiREG3->PC3 =    (uint32)((uint32)1U << 0U)  /* SCS[0] */
                    | (uint32)((uint32)1U << 1U)  /* SCS[1] */
                    | (uint32)((uint32)1U << 2U)  /* SCS[2] */
                    | (uint32)((uint32)1U << 3U)  /* SCS[3] */
                    | (uint32)((uint32)1U << 4U)  /* SCS[4] */
                    | (uint32)((uint32)1U << 5U)  /* SCS[5] */
                    | (uint32)((uint32)0U << 8U)  /* ENA */
                    | (uint32)((uint32)0U << 9U)  /* CLK */
                    | (uint32)((uint32)0U << 10U)  /* SIMO */
                    | (uint32)((uint32)0U << 11U); /* SOMI */

    /** - SPI3 Port direction */
    spiREG3->PC1  =   (uint32)((uint32)1U << 0U)  /* SCS[0] */
                    | (uint32)((uint32)1U << 1U)  /* SCS[1] */
                    | (uint32)((uint32)1U << 2U)  /* SCS[2] */
                    | (uint32)((uint32)1U << 3U)  /* SCS[3] */
                    | (uint32)((uint32)1U << 4U)  /* SCS[4] */
                    | (uint32)((uint32)1U << 5U)  /* SCS[5] */
                    | (uint32)((uint32)0U << 8U)  /* ENA */
                    | (uint32)((uint32)1U << 9U)  /* CLK */
                    | (uint32)((uint32)1U << 10U)  /* SIMO */
                    | (uint32)((uint32)0U << 11U); /* SOMI */

    /** - SPI3 Port open drain enable */
    spiREG3->PC6  =   (uint32)((uint32)0U << 0U)  /* SCS[0] */
                    | (uint32)((uint32)0U << 1U)  /* SCS[1] */
                    | (uint32)((uint32)0U << 2U)  /* SCS[2] */
                    | (uint32)((uint32)0U << 3U)  /* SCS[3] */
                    | (uint32)((uint32)0U << 4U)  /* SCS[4] */
                    | (uint32)((uint32)0U << 5U)  /* SCS[5] */
                    | (uint32)((uint32)0U << 8U)  /* ENA */
                    | (uint32)((uint32)0U << 9U)  /* CLK */
                    | (uint32)((uint32)0U << 10U)  /* SIMO */
                    | (uint32)((uint32)0U << 11U); /* SOMI */

    /** - SPI3 Port pullup / pulldown selection */
    spiREG3->PC8  =   (uint32)((uint32)1U << 0U)  /* SCS[0] */
                    | (uint32)((uint32)1U << 1U)  /* SCS[1] */
                    | (uint32)((uint32)1U << 2U)  /* SCS[2] */
                    | (uint32)((uint32)1U << 3U)  /* SCS[3] */
                    | (uint32)((uint32)1U << 4U)  /* SCS[4] */
                    | (uint32)((uint32)1U << 5U)  /* SCS[5] */
                    | (uint32)((uint32)1U << 8U)  /* ENA */
                    | (uint32)((uint32)1U << 9U)  /* CLK */
                    | (uint32)((uint32)1U << 10U)  /* SIMO */
                    | (uint32)((uint32)1U << 11U); /* SOMI */

    /** - SPI3 Port pullup / pulldown enable*/
    spiREG3->PC7  =   (uint32)((uint32)0U << 0U)  /* SCS[0] */
                    | (uint32)((uint32)0U << 1U)  /* SCS[1] */
                    | (uint32)((uint32)0U << 2U)  /* SCS[2] */
                    | (uint32)((uint32)0U << 3U)  /* SCS[3] */
                    | (uint32)((uint32)0U << 4U)  /* SCS[4] */
                    | (uint32)((uint32)0U << 5U)  /* SCS[5] */
                    | (uint32)((uint32)1U << 8U)  /* ENA */
                    | (uint32)((uint32)0U << 9U)  /* CLK */
                    | (uint32)((uint32)0U << 10U)  /* SIMO */
                    | (uint32)((uint32)0U << 11U); /* SOMI */

    /* SPI3 set all pins to functional */
    spiREG3->PC0  =   (uint32)((uint32)1U << 0U)  /* SCS[0] */
                    | (uint32)((uint32)0U << 1U)  /* SCS[1] */
                    | (uint32)((uint32)0U << 2U)  /* SCS[2] */
                    | (uint32)((uint32)0U << 3U)  /* SCS[3] */
                    | (uint32)((uint32)0U << 4U)  /* SCS[4] */
                    | (uint32)((uint32)0U << 5U)  /* SCS[5] */
                    | (uint32)((uint32)0U << 8U)  /* ENA */
                    | (uint32)((uint32)1U << 9U)  /* CLK */
                    | (uint32)((uint32)1U << 10U)  /* SIMO */
                    | (uint32)((uint32)1U << 11U); /* SOMI */

    /** - Initialize TX and RX data buffer Status */
    g_spiPacket_t[2U].tx_data_status  = SPI_READY;
    g_spiPacket_t[2U].rx_data_status  = SPI_READY;

    /** - Finally start SPI3 */
    spiREG3->GCR1 = (spiREG3->GCR1 & 0xFEFFFFFFU) | 0x01000000U;




/* USER CODE BEGIN (3) */
/* USER CODE END */
}


/** @fn void spiSetFunctional(spiBASE_t *spi, uint32 port)
*   @brief Change functional behavior of pins at runtime.
*   @param[in] spi   - Spi module base address
*   @param[in] port  - Value to write to PC0 register
*
*   Change the value of the PC0 register at runtime, this allows to
*   dynamically change the functionality of the SPI pins between functional
*   and GIO mode.
*/
/* SourceId : SPI_SourceId_002 */
/* DesignId : SPI_DesignId_002 */
/* Requirements : HL_CONQ_SPI_SR9 */
void spiSetFunctional(spiBASE_t *spi, uint32 port)
{
/* USER CODE BEGIN (4) */
/* USER CODE END */

    spi->PC0 = port;

/* USER CODE BEGIN (5) */
/* USER CODE END */
}


/** @fn uint32 spiReceiveData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * destbuff)
*   @brief Receives Data using polling method
*   @param[in] spi           - Spi module base address
*   @param[in] dataconfig_t    - Spi DAT1 register configuration
*   @param[in] blocksize    - number of data
*   @param[in] destbuff        - Pointer to the destination data (16 bit).
*
*   @return flag register value.
*
*   This function transmits blocksize number of data from source buffer using polling method.
*/
/* SourceId : SPI_SourceId_003 */
/* DesignId : SPI_DesignId_007 */
/* Requirements : HL_CONQ_SPI_SR14 */
uint32 spiReceiveData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * destbuff)
{
/* USER CODE BEGIN (6) */
/* USER CODE END */
    uint32 Chip_Select_Hold = (dataconfig_t->CS_HOLD) ? 0x10000000U : 0U;
    uint32 WDelay = (dataconfig_t->WDEL) ? 0x04000000U : 0U;
    SPIDATAFMT_t DataFormat = dataconfig_t->DFSEL;
    uint8 ChipSelect = dataconfig_t->CSNR;

    while(blocksize != 0U)
    {
        if((spi->FLG & 0x000000FFU) !=0U)
        {
          break;
        }
        if(blocksize == 1U)
        {
           Chip_Select_Hold = 0U;
        }
		
        /*SAFETYMCUSW 51 S MR:12.3 <APPROVED> "Needs shifting for 32-bit value" */
        spi->DAT1 = ((uint32)DataFormat << 24U) |
                    ((uint32)ChipSelect << 16U) |
                    (WDelay)            |
                    (Chip_Select_Hold)  |
                    (0x00000000U);
        /*SAFETYMCUSW 28 D MR:NA <APPROVED> "Hardware status bit read check" */
        while((spi->FLG & 0x00000100U) != 0x00000100U)
        {
        } /* Wait */
        /*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
        *destbuff = (uint16)spi->BUF;
        /*SAFETYMCUSW 567 S MR:17.1,17.4 <APPROVED> "Pointer increment needed" */
        destbuff++;
        blocksize--;
    }

/* USER CODE BEGIN (7) */
/* USER CODE END */

    return (spi->FLG & 0xFFU);
}


/** @fn uint32 spiGetData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * destbuff)
*   @brief Receives Data using interrupt method
*   @param[in] spi           - Spi module base address
*   @param[in] dataconfig_t    - Spi DAT1 register configuration
*   @param[in] blocksize    - number of data
*   @param[in] destbuff        - Pointer to the destination data (16 bit).
*
*   @return flag register value.
*
*   This function transmits blocksize number of data from source buffer using interrupt method.
*/
/* SourceId : SPI_SourceId_004 */
/* DesignId : SPI_DesignId_008 */
/* Requirements : HL_CONQ_SPI_SR15 */
void spiGetData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * destbuff)
{
     uint32 index = (spi == spiREG1) ? 0U :((spi==spiREG2) ? 1U : ((spi==spiREG3) ? 2U:((spi==spiREG4) ? 3U:4U)));

/* USER CODE BEGIN (8) */
/* USER CODE END */

     g_spiPacket_t[index].rx_length = blocksize;
     g_spiPacket_t[index].rxdata_ptr   = destbuff;
     g_spiPacket_t[index].g_spiDataFormat = *dataconfig_t;
     g_spiPacket_t[index].rx_data_status = SPI_PENDING;

     spi->INT0 |= 0x0100U;

/* USER CODE BEGIN (9) */
/* USER CODE END */
}


/** @fn uint32 spiTransmitData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * srcbuff)
*   @brief Transmits Data using polling method
*   @param[in] spi           - Spi module base address
*   @param[in] dataconfig_t    - Spi DAT1 register configuration
*   @param[in] blocksize    - number of data
*   @param[in] srcbuff        - Pointer to the source data ( 16 bit).
*
*   @return flag register value.
*
*   This function transmits blocksize number of data from source buffer using polling method.
*/
/* SourceId : SPI_SourceId_005 */
/* DesignId : SPI_DesignId_005 */
/* Requirements : HL_CONQ_SPI_SR12 */
uint32 spiTransmitData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * srcbuff)
{
    volatile uint32 SpiBuf;
    uint16 Tx_Data;
    uint32 Chip_Select_Hold = (dataconfig_t->CS_HOLD) ? 0x10000000U : 0U;
    uint32 WDelay = (dataconfig_t->WDEL) ? 0x04000000U : 0U;
    SPIDATAFMT_t DataFormat = dataconfig_t->DFSEL;
    uint8 ChipSelect = dataconfig_t->CSNR;

/* USER CODE BEGIN (10) */
/* USER CODE END */
    while(blocksize != 0U)
    {
        if((spi->FLG & 0x000000FFU) !=0U)
        {
           break;
        }

        if(blocksize == 1U)
        {
           Chip_Select_Hold = 0U;
        }
        /*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
        Tx_Data = *srcbuff;

        spi->DAT1 =  ((uint32)DataFormat << 24U) |
                     ((uint32)ChipSelect << 16U) |
                     (WDelay)           |
                     (Chip_Select_Hold) |
                     (uint32)Tx_Data;
        /*SAFETYMCUSW 567 S MR:17.1,17.4 <APPROVED> "Pointer increment needed" */
        srcbuff++;
        /*SAFETYMCUSW 28 D MR:NA <APPROVED> "Hardware status bit read check" */
        while((spi->FLG & 0x00000100U) != 0x00000100U)
        {
        } /* Wait */
        SpiBuf = spi->BUF;

        blocksize--;
    }

/* USER CODE BEGIN (11) */
/* USER CODE END */

    return (spi->FLG & 0xFFU);
}


/** @fn void spiSendData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * srcbuff)
*   @brief Transmits Data using interrupt method
*   @param[in] spi           - Spi module base address
*   @param[in] dataconfig_t    - Spi DAT1 register configuration
*   @param[in] blocksize    - number of data
*   @param[in] srcbuff        - Pointer to the source data ( 16 bit).
*
*   @return flag register value.
*
*   This function transmits blocksize number of data from source buffer using interrupt method.
*/
/* SourceId : SPI_SourceId_006 */
/* DesignId : SPI_DesignId_006 */
/* Requirements : HL_CONQ_SPI_SR13 */
void spiSendData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * srcbuff)
{
        uint32 index = (spi == spiREG1) ? 0U :((spi==spiREG2) ? 1U : ((spi==spiREG3) ? 2U:((spi==spiREG4) ? 3U:4U)));

/* USER CODE BEGIN (12) */
/* USER CODE END */

     g_spiPacket_t[index].tx_length = blocksize;
     g_spiPacket_t[index].txdata_ptr   = srcbuff;
     g_spiPacket_t[index].g_spiDataFormat = *dataconfig_t;
     g_spiPacket_t[index].tx_data_status = SPI_PENDING;

     spi->INT0 |= 0x0200U;

/* USER CODE BEGIN (13) */
/* USER CODE END */
}


/** @fn uint32 spiTransmitAndReceiveData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * srcbuff, uint16 * destbuff)
*   @brief Transmits and Receive Data using polling method
*   @param[in] spi           - Spi module base address
*   @param[in] dataconfig_t    - Spi DAT1 register configuration
*   @param[in] blocksize    - number of data
*   @param[in] srcbuff        - Pointer to the source data ( 16 bit).
*   @param[in] destbuff        - Pointer to the destination data ( 16 bit).
*
*   @return flag register value.
*
*   This function transmits and receives blocksize number of data from source buffer using polling method.
*/
/* SourceId : SPI_SourceId_007 */
/* DesignId : SPI_DesignId_009 */
/* Requirements : HL_CONQ_SPI_SR16 */
uint32 spiTransmitAndReceiveData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * srcbuff, uint16 * destbuff)
{
    uint16 Tx_Data;
    uint32 Chip_Select_Hold = (dataconfig_t->CS_HOLD) ? 0x10000000U : 0U;
    uint32 WDelay = (dataconfig_t->WDEL) ? 0x04000000U : 0U;
    SPIDATAFMT_t DataFormat = dataconfig_t->DFSEL;
    uint8 ChipSelect = dataconfig_t->CSNR;

/* USER CODE BEGIN (14) */
/* USER CODE END */
    while(blocksize != 0U)
    {
        if((spi->FLG & 0x000000FFU) != 0U)
        {
           break;
        }

        if(blocksize == 1U)
        {
           Chip_Select_Hold = 0U;
        }
        /*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
        Tx_Data = *srcbuff;

        spi->DAT1 =((uint32)DataFormat << 24U) |
                   ((uint32)ChipSelect << 16U) |
                   (WDelay)           |
                   (Chip_Select_Hold) |
                   (uint32)Tx_Data;
        /*SAFETYMCUSW 567 S MR:17.1,17.4 <APPROVED> "Pointer increment needed" */
        srcbuff++;
        /*SAFETYMCUSW 28 D MR:NA <APPROVED> "Hardware status bit read check" */
        while((spi->FLG & 0x00000100U) != 0x00000100U)
        {
        } /* Wait */
        /*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
        *destbuff = (uint16)spi->BUF;
        /*SAFETYMCUSW 567 S MR:17.1,17.4 <APPROVED> "Pointer increment needed" */
        destbuff++;

        blocksize--;
    }

/* USER CODE BEGIN (15) */
/* USER CODE END */

    return (spi->FLG & 0xFFU);
}

/* USER CODE BEGIN (16) */
/* USER CODE END */

/** @fn void spiSendAndGetData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * srcbuff, uint16 * destbuff)
*   @brief Initiate SPI Transmits and receive Data using Interrupt mode.
*   @param[in] spi           - Spi module base address
*   @param[in] dataconfig_t    - Spi DAT1 register configuration
*   @param[in] blocksize    - number of data
*   @param[in] srcbuff        - Pointer to the source data ( 16 bit).
*   @param[in] destbuff        - Pointer to the destination data ( 16 bit).
*
*   Initiate SPI Transmits and receive Data using Interrupt mode..
*/
/* SourceId : SPI_SourceId_008 */
/* DesignId : SPI_DesignId_010 */
/* Requirements : HL_CONQ_SPI_SR17 */
void spiSendAndGetData(spiBASE_t *spi, spiDAT1_t *dataconfig_t, uint32 blocksize, uint16 * srcbuff, uint16 * destbuff)
{

/* USER CODE BEGIN (17) */
/* USER CODE END */

    uint32 index = (spi == spiREG1) ? 0U :((spi==spiREG2) ? 1U : ((spi==spiREG3) ? 2U:((spi==spiREG4) ? 3U:4U)));

    g_spiPacket_t[index].tx_length       = blocksize;
    g_spiPacket_t[index].rx_length       = blocksize;
    g_spiPacket_t[index].txdata_ptr      = srcbuff;
    g_spiPacket_t[index].rxdata_ptr      = destbuff;
    g_spiPacket_t[index].g_spiDataFormat = *dataconfig_t;
    g_spiPacket_t[index].tx_data_status  = SPI_PENDING;
    g_spiPacket_t[index].rx_data_status  = SPI_PENDING;

    spi->INT0 |= 0x0300U;

/* USER CODE BEGIN (18) */
/* USER CODE END */
}

/** @fn SpiDataStatus_t SpiTxStatus(spiBASE_t *spi)
*   @brief Get the status of the SPI Transmit data block.
*   @param[in] spi           - Spi module base address
*
*   @return Spi Transmit block data status.
*
*   Get the status of the SPI Transmit data block.
*/
/* SourceId : SPI_SourceId_009 */
/* DesignId : SPI_DesignId_013 */
/* Requirements : HL_CONQ_SPI_SR20 */
SpiDataStatus_t SpiTxStatus(spiBASE_t *spi)
{

/* USER CODE BEGIN (19) */
/* USER CODE END */

    uint32 index = (spi == spiREG1) ? 0U :((spi==spiREG2) ? 1U : ((spi==spiREG3) ? 2U:((spi==spiREG4) ? 3U:4U)));
    return(g_spiPacket_t[index].tx_data_status);
}

/* USER CODE BEGIN (20) */
/* USER CODE END */

/** @fn SpiDataStatus_t SpiRxStatus(spiBASE_t *spi)
*   @brief Get the status of the SPI Receive data block.
*   @param[in] spi           - Spi module base address
*
*   @return Spi Receive block data status.
*
*   Get the status of the SPI Receive data block.
*/
/* SourceId : SPI_SourceId_010 */
/* DesignId : SPI_DesignId_014 */
/* Requirements : HL_CONQ_SPI_SR21 */
SpiDataStatus_t SpiRxStatus(spiBASE_t *spi)
{

/* USER CODE BEGIN (21) */
/* USER CODE END */

    uint32 index = (spi == spiREG1) ? 0U :((spi==spiREG2) ? 1U : ((spi==spiREG3) ? 2U:((spi==spiREG4) ? 3U:4U)));
    return(g_spiPacket_t[index].rx_data_status);
}

/* USER CODE BEGIN (22) */
/* USER CODE END */

/** @fn void spiEnableLoopback(spiBASE_t *spi, loopBackType_t Loopbacktype)
*   @brief Enable Loopback mode for self test
*   @param[in] spi        - spi module base address
*   @param[in] Loopbacktype  - Digital or Analog
*
*   This function enables the Loopback mode for self test.
*/
/* SourceId : SPI_SourceId_011 */
/* DesignId : SPI_DesignId_011 */
/* Requirements : HL_CONQ_SPI_SR18 */
void spiEnableLoopback(spiBASE_t *spi, loopBackType_t Loopbacktype)
{
/* USER CODE BEGIN (23) */
/* USER CODE END */

    /* Clear Loopback incase enabled already */
    spi->IOLPKTSTCR = 0U;

    /* Enable Loopback either in Analog or Digital Mode */
    spi->IOLPKTSTCR = (uint32)0x00000A00U
                    | (uint32)((uint32)Loopbacktype << 1U);

/* USER CODE BEGIN (24) */
/* USER CODE END */
}

/* USER CODE BEGIN (25) */
/* USER CODE END */

/** @fn void spiDisableLoopback(spiBASE_t *spi)
*   @brief Enable Loopback mode for self test
*   @param[in] spi        - spi module base address
*
*   This function disable the Loopback mode.
*/
/* SourceId : SPI_SourceId_012 */
/* DesignId : SPI_DesignId_012 */
/* Requirements : HL_CONQ_SPI_SR19 */
void spiDisableLoopback(spiBASE_t *spi)
{
/* USER CODE BEGIN (26) */
/* USER CODE END */

    /* Disable Loopback Mode */
    spi->IOLPKTSTCR = 0x00000500U;

/* USER CODE BEGIN (27) */
/* USER CODE END */
}

/* USER CODE BEGIN (28) */
/* USER CODE END */

/** @fn spiEnableNotification(spiBASE_t *spi, uint32 flags)
*   @brief Enable interrupts
*   @param[in] spi   - spi module base address
*   @param[in] flags - Interrupts to be enabled, can be ored value of:
*/
/* SourceId : SPI_SourceId_013 */
/* DesignId : SPI_DesignId_003 */
/* Requirements : HL_CONQ_SPI_SR10 */
void spiEnableNotification(spiBASE_t *spi, uint32 flags)
{
/* USER CODE BEGIN (29) */
/* USER CODE END */

    spi->INT0 = (spi->INT0 & 0xFFFF0000U) | flags;

/* USER CODE BEGIN (30) */
/* USER CODE END */
}

/* USER CODE BEGIN (31) */
/* USER CODE END */

/** @fn spiDisableNotification(spiBASE_t *spi, uint32 flags)
*   @brief Enable interrupts
*   @param[in] spi   - spi module base address
*   @param[in] flags - Interrupts to be enabled, can be ored value of:
*/
/* SourceId : SPI_SourceId_014 */
/* DesignId : SPI_DesignId_004 */
/* Requirements : HL_CONQ_SPI_SR11 */
void spiDisableNotification(spiBASE_t *spi, uint32 flags)
{
/* USER CODE BEGIN (32) */
/* USER CODE END */

    spi->INT0 = (spi->INT0 & (~(flags)));

/* USER CODE BEGIN (33) */
/* USER CODE END */
}



/** @fn void spi3GetConfigValue(spi_config_reg_t *config_reg, config_value_type_t type)
*   @brief Get the initial or current values of the configuration registers
*
*    @param[in] *config_reg: pointer to the struct to which the initial or current
*                           value of the configuration registers need to be stored
*    @param[in] type:     whether initial or current value of the configuration registers need to be stored
*                        - InitialValue: initial value of the configuration registers will be stored
*                                       in the struct pointed by config_reg
*                        - CurrentValue: initial value of the configuration registers will be stored
*                                       in the struct pointed by config_reg
*
*   This function will copy the initial or current value (depending on the parameter 'type')
*   of the configuration registers to the struct pointed by config_reg
*
*/
/* SourceId : SPI_SourceId_017 */
/* DesignId : SPI_DesignId_015 */
/* Requirements : HL_CONQ_SPI_SR26 */
void spi3GetConfigValue(spi_config_reg_t *config_reg, config_value_type_t type)
{
    if (type == InitialValue)
    {
        config_reg->CONFIG_GCR1  = SPI3_GCR1_CONFIGVALUE;
        config_reg->CONFIG_INT0  = SPI3_INT0_CONFIGVALUE;
        config_reg->CONFIG_LVL   = SPI3_LVL_CONFIGVALUE;
        config_reg->CONFIG_PC0   = SPI3_PC0_CONFIGVALUE;
        config_reg->CONFIG_PC1   = SPI3_PC1_CONFIGVALUE;
        config_reg->CONFIG_PC6   = SPI3_PC6_CONFIGVALUE;
        config_reg->CONFIG_PC7   = SPI3_PC7_CONFIGVALUE;
        config_reg->CONFIG_PC8   = SPI3_PC8_CONFIGVALUE;
        config_reg->CONFIG_DELAY = SPI3_DELAY_CONFIGVALUE;
        config_reg->CONFIG_FMT0  = SPI3_FMT0_CONFIGVALUE;
        config_reg->CONFIG_FMT1  = SPI3_FMT1_CONFIGVALUE;
        config_reg->CONFIG_FMT2  = SPI3_FMT2_CONFIGVALUE;
        config_reg->CONFIG_FMT3  = SPI3_FMT3_CONFIGVALUE;
    }
    else
    {
    /*SAFETYMCUSW 134 S MR:12.2 <APPROVED> "LDRA Tool issue" */
        config_reg->CONFIG_GCR1  = spiREG3->GCR1;
        config_reg->CONFIG_INT0  = spiREG3->INT0;
        config_reg->CONFIG_LVL   = spiREG3->LVL;
        config_reg->CONFIG_PC0   = spiREG3->PC0;
        config_reg->CONFIG_PC1   = spiREG3->PC1;
        config_reg->CONFIG_PC6   = spiREG3->PC6;
        config_reg->CONFIG_PC7   = spiREG3->PC7;
        config_reg->CONFIG_PC8   = spiREG3->PC8;
        config_reg->CONFIG_DELAY = spiREG3->DELAY ;
        config_reg->CONFIG_FMT0  = spiREG3->FMT0;
        config_reg->CONFIG_FMT1  = spiREG3->FMT1;
        config_reg->CONFIG_FMT2  = spiREG3->FMT2;
        config_reg->CONFIG_FMT3  = spiREG3->FMT3;
    }
}