cc2640r2f的spi数据接收

user6123782

Intellectual 640 points

Other Parts Discussed in Thread: CC2640R2F

cc2640r2f的spi程序烧录进去发送为一百位数据，只能接收到前十位。程序在其他芯片上可以正常发送接收，硬件烧录其他程序也能接收完整的数据。为什么烧录发送一百位数据的程序就只能接收到十位？？

6 年多前

0 Susan Yang 6 年多前

TI__Guru**** 252096 points

若是可以的话，能给出关键代码吗？

0 user6123782 6 年多前回复 Susan Yang

Intellectual 640 points

#define MSGSIZE 102
#define MSG ("12345butty12345xjf666aaaaaaaaaaaaxjf66661234567890abcdefghijklmxjf666777888999hakkkkkjjjjjhhhhhffppp")
void *mainThread(void *arg0)
{
RF_Params rfParams;
RF_Params_init(&rfParams);

UART_Handle uart;
UART_Params uartParams;
UART_init();

/* Create a UART with data processing off. */

UART_Params_init(&uartParams);
uartParams.writeDataMode = UART_DATA_BINARY;
uartParams.readDataMode = UART_DATA_BINARY;
uartParams.readReturnMode = UART_RETURN_FULL;
uartParams.readEcho = UART_ECHO_OFF;
uartParams.baudRate = 115200;

uart = UART_open(Board_UART0, &uartParams);

if (uart == NULL) {
/* UART_open() failed */
while (1);
}

SPI_Handle spi;
SPI_Params spiParams;
SPI_Transaction spiTransaction;
char transmitBuffer[MSGSIZE];
// char receiveBuffer[MSGSIZE];
bool transferOK;
SPI_init();
SPI_Params_init(&spiParams);
spiParams.dataSize = 8;
spiParams.frameFormat = SPI_POL0_PHA0;
spiParams.mode = SPI_SLAVE;
spiParams.transferMode = SPI_MODE_BLOCKING;
spiParams.bitRate = 115200;
spiParams.transferTimeout = SPI_WAIT_FOREVER;
spiParams.transferCallbackFxn = NULL;

spi = SPI_open(Board_SPI0, &spiParams);
if (spi == NULL) {
while (1); // SPI_open() failed
}
// Fill in transmitBuffer
memset(transmitBuffer,'\0', MSGSIZE);
strncpy(transmitBuffer,MSG,strlen(MSG));

spiTransaction.count = MSGSIZE;
char send[MSGSIZE];
int n = 48;
while(1)
{

n = (n>57)? 48:n;
transmitBuffer[MSGSIZE-2]= (char)n;
n++;
spiTransaction.txBuf = (void *)transmitBuffer;
transferOK = SPI_transfer(spi, &spiTransaction);
if (!transferOK) {
// Error in SPI or transfer already in progress.
while (1);
}

UART_write(uart,"justTx", sizeof("justTx"));

memset(send,'\0',MSGSIZE);
strncpy(send,(char *)spiTransaction.txBuf,MSGSIZE);
UART_write(uart,send,MSGSIZE);

0 user6123782 6 年多前回复 user6123782

Intellectual 640 points

void *mainThread(void *arg0)
{
RF_Params rfParams;
RF_Params_init(&rfParams);

UART_Handle uart;
UART_Params uartParams;
UART_init();

// char buffer[10];

/* Create a UART with data processing off. */

UART_Params_init(&uartParams);
uartParams.writeDataMode = UART_DATA_BINARY;
uartParams.readDataMode = UART_DATA_BINARY;
uartParams.readReturnMode = UART_RETURN_FULL;
uartParams.readEcho = UART_ECHO_OFF;
uartParams.baudRate = 115200;

uart = UART_open(Board_UART0, &uartParams);

if (uart == NULL) {
/* UART_open() failed */
while (1);
}

SPI_Handle spi;
SPI_Params spiParams;
SPI_Transaction spiTransaction;
// uint8_t transmitBuffer[MSGSIZE];
char receiveBuffer[MSGSIZE];
bool transferOK;
SPI_init(); // Initialize the SPI driver
SPI_Params_init(&spiParams); // Initialize SPI parameters
spiParams.dataSize = 8; // 8-bit data size
spiParams.frameFormat = SPI_POL0_PHA0;
spiParams.mode = SPI_MASTER;// SPI_MASTER SPI_SLAVE
spiParams.transferMode = SPI_MODE_BLOCKING;
spiParams.bitRate = 115200;
spiParams.transferTimeout = SPI_WAIT_FOREVER;
spiParams.transferCallbackFxn = NULL;
//spiParams.transferTimeout = 14400;

spi = SPI_open(Board_SPI0, &spiParams);
if (spi == NULL) {
UART_write(uart,"spiopenfail", sizeof("spiopenfail"));
while (1); // SPI_open() failed
}
UART_write(uart,"spiopenok", sizeof("spiopenok"));

spiTransaction.count = MSGSIZE;
//spiTransaction.txBuf = (void *)transmitBuffer;
spiTransaction.rxBuf = (void *)receiveBuffer;
char rx[MSGSIZE+1];

while(1)
{
//
sleep(1);
UART_write(uart,"masterR", sizeof("masterR"));
memset(receiveBuffer,'\0',MSGSIZE);
transferOK = SPI_transfer(spi, &spiTransaction);

if (!transferOK) {
UART_write(uart,"spitransferfail", sizeof("spitransferfail"));
// Error in SPI or transfer already in progress.
while (1);
}

UART_write(uart,"spitransferok", sizeof("spitransferok"));
//sleep(1);
memset(rx,'\0',MSGSIZE+1);
strncpy(rx,(char *)spiTransaction.rxBuf,strlen(receiveBuffer));
UART_write(uart,rx,MSGSIZE);

0 user6123782 6 年多前回复 Susan Yang

Intellectual 640 points

请问能发现什么问题吗？

0 Susan Yang 6 年多前回复 user6123782

TI__Guru**** 252096 points

您可以看一下这一个官方说明

When the SPI is opened, the dataSize value determines the element types of txBuf and rxBuf. If the dataSize is from 4 to 8 bits, the driver assumes the data buffers are of type uint8_t (unsigned char). If the dataSize is from 8 to 16 bits, the driver assumes the data buffers are of type uint16_t (unsigned short). If the dataSize is greater than 16 bits, the driver assumes the data buffers are uint32_t (unsigned long). Some SPI driver implementations may not support all data sizes; refer to device specific SPI implementation documentation for details on what data sizes are supported.

下面链接的SPI Transactions

dev.ti.com/.../_s_p_i_8h.html

0 Susan Yang 6 年多前回复 user6123782

TI__Guru**** 252096 points

附上相关示例代码

Example transferring 12-bit SPI frames. The transmit and receive buffers are of type uint16_t.

SPI_Transaction spiTransaction;
uint16_t transmitBuffer[BUFSIZE];
uint16_t receiveBuffer[BUFSIZE];
bool transferOK;

SPI_Params_init(&spiParams);
spiParams.dataSize = 12;
spi = SPI_open(Board_SPI0, &spiParams);
...
spiTransaction.count = someIntegerValue;
spiTransaction.txBuf = transmitBuffer;
spiTransaction.rxBuf = receiveBuffer;

transferOK = SPI_transfer(spi, &spiTransaction);
if (!transferOK) {
// Error in SPI or transfer already in progress.
}

0 Susan Yang 6 年多前回复 user6123782

TI__Guru**** 252096 points

下面是从机Receive 100 bytes over SPI in SPI_MODE_BLOCKING模式

SPI_Handle handle;
SPI_Params params;
SPI_Transaction transaction;
uint8_t rxBuf[100];     // Receive buffer
// Init SPI and specify non-default parameters
SPI_Params_init(&params);
params.bitRate     = 1000000;
params.frameFormat = SPI_POL1_PHA1;
params.mode        = SPI_SLAVE;
// Configure the transaction
transaction.count = 100;
transaction.txBuf = NULL;
transaction.rxBuf = rxBuf;
// Open the SPI and perform the transfer
handle = SPI_open(Board_SPI, &params);
SPI_transfer(handle, &transaction);

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cc2640r2f的spi数据接收