cc1310 spi通信不成功

Dong Chen7

Other Parts Discussed in Thread: CC1310

Hi，

我现在使用硬件SPI，调用SPI_transfer()函数发送数据时卡死，能帮忙解决一下吗。

还有就是，默认的代码里面SPI的pin配置如下：

CC1310_LAUNCHXL_SPI0_MOSI | PIN_INPUT_EN | PIN_PULLDOWN, /* SPI master out - slave in */
CC1310_LAUNCHXL_SPI0_MISO | PIN_INPUT_EN | PIN_PULLDOWN,
CC1310_LAUNCHXL_SPI0_CLK | PIN_INPUT_EN | PIN_PULLDOWN,

为什么要这样配置，没有配置输出，全是输入。

我的SPI代码如下：

static SPI_Handle spi_handle;

int spi_init(void)
{
SPI_Params spiParams;

SPI_init();

SPI_Params_init(&spiParams);

spi_handle = SPI_open(Board_SPI0, &spiParams);
if (!spi_handle) {
return false;
}

return true;
}

void spi_write_data(unsigned char data)
{
SPI_Transaction masterTransaction;

masterTransaction.count = 1;
masterTransaction.txBuf = (void *)&data;
masterTransaction.arg = NULL;
masterTransaction.rxBuf = NULL;

SPI_transfer(spi_handle, &masterTransaction);
}

6 年多前

0 Viki Shi 6 年多前

TI__Guru**** 188340 points

请参考这边的SPI driver guide： http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/tirtos/2_14_02_22/exports/tirtos_full_2_14_02_22/docs/doxygen/html/_s_p_i_c_c26_x_x_d_m_a_8h.html【与CC1310类似】

另外，在 Sensor Controller Studio--help section里，也有部分SPI例程

0 user4988634 6 年多前回复 Viki Shi

Expert 1593 points

#include "Board.h"
#include "spitext.h"
#include <ti/drivers/spi/SPICC26XXDMA.h>

#include <ti/drivers/SPI.h>
#include <ti/drivers/spi/SPICC26XXDMA.h>
#include <ti/drivers/dma/UDMACC26XX.h>


static SPI_Handle spiHandle = NULL;

/*******************************************************************************
* @fn          Spi_open
* @brief       Open the RTOS SPI driver
* @param       bitRate - transfer speed in bits/sec
* @return      true if success
*/
bool Spi_open(void)
{
    SPI_Params spiParams;
    SPI_init();
    /*  Configure SPI as master */
    SPI_Params_init(&spiParams);
    spiParams.bitRate      = 1000000;
    spiParams.mode         = SPI_MASTER;
    spiParams.transferMode = SPI_MODE_BLOCKING;
    spiParams.frameFormat  = SPI_POL0_PHA0;

    /* Attempt to open SPI. */
    spiHandle = SPI_open(Board_SPI0, &spiParams);
    return spiHandle != NULL;
}


uint8_t Spi_Read_Write(uint8_t data)
{
    uint8_t data1;
    SPI_Transaction masterTransaction;
    masterTransaction.count = 1;
    masterTransaction.txBuf = &data;
    masterTransaction.rxBuf = &data1;
    masterTransaction.arg   = NULL;
    SPI_transfer(spiHandle, &masterTransaction);
    return data1;
}


/*******************************************************************************
* @fn          Spi_close
*
* @brief       Close the RTOS SPI driver
*
* @return      none
*/
void Spi_close(void)
{
    if (spiHandle != NULL)
    {
        // Close the RTOS driver
        SPI_close(spiHandle);
        spiHandle = NULL;
    }
}

spi口是 8 9 10