CC3220SF写SPI程序调试

SDK内是有对应的例程的，您可以参考一下

examples\rtos\CC3220SF_LAUNCHXL\drivers\spimaster spislave

请问您现在使用的软硬件是怎样的？请您详细说明一下，谢谢

请您给出ADC的型号，相关的配置代码，示波器显示的波形

我们根据您的详细信息具体看一下

另外E2E上有一些相关帖子，您可以先看一下

e2e.ti.com/.../cc3220sf-launchxl-data-received-over-spi-incorrecly-read

ADC型号为AD7124-8,具体使用，首先在SPI线程进行初始化
void *threadFxn0(void *arg0)
{
SPI_Handle masterSpi;
SPI_Params spiParams;
struct ad7124_device ad7124;
SPI_Params_init(&spiParams);
spiParams.frameFormat = SPI_POL1_PHA1;
spiParams.bitRate = 1000000;
masterSpi = SPI_open(CONFIG_SPI_MASTER, &spiParams);
if (masterSpi == NULL) {
Display_printf(display, 0, 0, "Error initializing master SPI\n");

while (1);
}
else {
Display_printf(display, 0, 0, "Master SPI initialized\n");
}
AD7124_Setup(&ad7124, AD7124_SLAVE_ID, (ad7124_st_reg *)&ad7124_regs, masterSpi);（运行到这开始调用自己写的函数

上面函数调用初始化ADC的函数，通过SPI写数据写入控制命令，读数据）
int32_t AD7124_Setup(ad7124_device *device, int slave_select,
ad7124_st_reg *regs, SPI_Handle a)
{
int32_t ret;
unsigned char i=0;
enum ad7124_registers regNr;
if(!device || !regs)
return INVALID_VAL;
device->regs = regs;
device->slave_select_id = slave_select;
device->spi_rdy_poll_cnt = 25000;
ret = AD7124_Reset(device, a);
---------------（ reset函数里调用了写SPI函数，运行正常，reset函数和spi写函数如下
int32_t AD7124_Reset(ad7124_device *device, SPI_Handle b)
{
int32_t ret = 0;
uint8_t wrBuf[8] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
if(!device)
return INVALID_VAL;

ret = AD7124_SPI_Write(device->slave_select_id, wrBuf, 8, b);

/* Wait for the reset to complete */
// ret = AD7124_WaitToPowerOn(device, device->spi_rdy_poll_cnt, b);
return ret;
}
）
unsigned char AD7124_SPI_Write(unsigned char slaveDeviceId,
unsigned char* data,
unsigned char bytesNumber,
SPI_Handle masterSpi)
{
uint8_t i=0;
SPI_Transaction transaction;
memset((void *) masterTxBuffer, 0, SPI_MSG_LENGTH);
for(i=0; i<bytesNumber; i++)
{
masterTxBuffer[i] =data[i];
}
transaction.count = bytesNumber;
transaction.txBuf = (void *) masterTxBuffer;
SPI_transfer(masterSpi, &transaction);
return 0;
}------------------
函数继续
if (ret < 0)
return ret;
ret = AD7124_ReadRegister(device, &regs[AD7124_ID], a);
---------（程序运行到这里就出错了，用到的函数如下
int32_t AD7124_ReadRegister(ad7124_device *device, ad7124_st_reg* pReg, SPI_Handle b)（读寄存器函数，调用下面函数）
{
int32_t ret;
if (pReg->addr != AD7124_ERR_REG && device->check_ready)
{
ret = AD7124_WaitForSpiReady(device, device->spi_rdy_poll_cnt, b);
if (ret < 0)
return ret;
}

ret = AD7124_NoCheckReadRegister(device, pReg, b);

return ret;
}
int32_t AD7124_NoCheckReadRegister(ad7124_device *device, ad7124_st_reg* pReg, SPI_Handle c)
{
int32_t ret = 0;
uint8_t buffer[8] = {0, 0, 0, 0, 0, 0, 0, 0};
uint8_t i = 0;
uint8_t check8 = 0;
uint8_t msgBuf[8] = {0, 0, 0, 0, 0, 0, 0, 0};
if(!device || !pReg)
return INVALID_VAL;
/* Build the Command word */
buffer[0] = AD7124_COMM_REG_WEN | AD7124_COMM_REG_RD |
AD7124_COMM_REG_RA(pReg->addr);
/* Read data from the device */
ret = AD7124_SPI_Read(device->slave_select_id,
buffer,
((device->useCRC != AD7124_DISABLE_CRC) ? pReg->size + 1
: pReg->size) + 1, c);
if(ret < 0)
return ret;

/* Check the CRC */
if(device->useCRC == AD7124_USE_CRC)
{
msgBuf[0] = AD7124_COMM_REG_WEN | AD7124_COMM_REG_RD |
AD7124_COMM_REG_RA(pReg->addr);
for(i = 1; i < pReg->size + 2; ++i)
{
msgBuf[i] = buffer[i];
}
check8 = AD7124_ComputeCRC8(msgBuf, pReg->size + 2);
}

if(check8 != 0)
{
/* ReadRegister checksum failed. */
return COMM_ERR;
}

/* Build the result */
pReg->value = 0;
for(i = 1; i < pReg->size + 1; i++)
{
pReg->value <<= 8;
pReg->value += buffer[i];
}

return ret;
}
unsigned char AD7124_SPI_Read(unsigned char slaveDeviceId,（调用此函数读字节，只要我向spi-read函数里写入以下程序，程序运行就会出错，进入DMA错误中断程序死循环，这也是我遇到的主要问题）
unsigned char* data,
unsigned char bytesNumber,
SPI_Handle masterSpi)
{
uint8_t i=0;
SPI_Transaction transaction;
transaction.count = SPI_MSG_LENGTH;
masterTxBuffer[0] =data[0];
transaction.txBuf = (void *) masterTxBuffer;
SPI_transfer(masterSpi, &transaction);（我需要先写入控制命令，才能读取数据）
memset((void *) masterRxBuffer, 0, SPI_MSG_LENGTH);//将读数据buffer清空，准备接收下一组数据
for(i=1; i<bytesNumber; i++)
{
data[i] = masterRxBuffer[i];
}
transaction.rxBuf = (void *) masterRxBuffer;
SPI_transfer(masterSpi, &transaction);
}
-----------请您帮我看一下吧，如果还需要示波器波形我再传给您