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TMS320F28377D CAN发送数据CANMonitor接收不到

2017-01-18 分类：C2000™ 32位实时 MCU 阅读(632)

#include "F28x_Project.h" // Device Headerfile and Examples Include File
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "inc/hw_can.h"
#include "driverlib/can.h"

volatile unsigned long g_ulMsgCount = 0;

volatile unsigned long g_bErrFlag = 0;

int
main(void)
{
tCANMsgObject sTXCANMessage;
tCANMsgObject sRXCANMessage;
unsigned char ucTXMsgData[4];
unsigned char ucRXMsgData[4];
InitSysCtrl();
InitGpio();
//GPIO30 – CANRXA
GPIO_SetupPinMux(5, GPIO_MUX_CPU1, 6);
//GPIO31 – CANTXA
GPIO_SetupPinMux(4, GPIO_MUX_CPU1, 6);
GPIO_SetupPinOptions(5, GPIO_INPUT, GPIO_ASYNC);
GPIO_SetupPinOptions(4, GPIO_OUTPUT, GPIO_PUSHPULL);

CANInit(CANA_BASE);

CANClkSourceSelect(CANA_BASE, 0);

CANBitRateSet(CANA_BASE, 200000000, 500000);// 500 kHz.

DINT;

InitPieCtrl();

IER = 0x0000;
IFR = 0x0000;

InitPieVectTable();

// HWREG(CANA_BASE + CAN_O_CTL) |= CAN_CTL_TEST;
// HWREG(CANA_BASE + CAN_O_TEST) = CAN_TEST_EXL;

// Enable the CAN for operation.
CANEnable(CANA_BASE);

*(unsigned long *)ucTXMsgData = 0;
sTXCANMessage.ui32MsgID =1 ; // CAN message ID – use 1
sTXCANMessage.ui32MsgIDMask = 0; // no mask needed for TX
sTXCANMessage.ui32Flags = MSG_OBJ_TX_INT_ENABLE; // enable interrupt on TX
sTXCANMessage.ui32MsgLen = sizeof(ucTXMsgData); // size of message is 4
sTXCANMessage.pucMsgData = ucTXMsgData; // ptr to message content

// Initialize the message object that will be used for recieving CAN
// messages.
*(unsigned long *)ucRXMsgData = 0;
sRXCANMessage.ui32MsgID = 1; // CAN message ID – use 1
sRXCANMessage.ui32MsgIDMask = 0; // no mask needed for TX
sRXCANMessage.ui32Flags = MSG_OBJ_NO_FLAGS; //
sRXCANMessage.ui32MsgLen = sizeof(ucRXMsgData); // size of message is 4
sRXCANMessage.pucMsgData = ucRXMsgData; // ptr to message content

// Setup the message object being used to receive messages
CANMessageSet(CANA_BASE, 2, &sRXCANMessage, MSG_OBJ_TYPE_RX);

for(;;)
{

CANMessageSet(CANA_BASE, 1, &sTXCANMessage, MSG_OBJ_TYPE_TX);

DELAY_US(1000*1000);

// Get the receive message
CANMessageGet(CANA_BASE, 2, &sRXCANMessage, true);
.
(*(unsigned long *)ucTXMsgData)++;

}

}

这是TI controlSUITE里的代码  将LOOPBACK的两行代码屏蔽

// HWREG(CANA_BASE + CAN_O_CTL) |= CAN_CTL_TEST;
// HWREG(CANA_BASE + CAN_O_TEST) = CAN_TEST_EXL;

CAN控制芯片为sn65hvd230，通过示波器测CAN芯片的TX、RX、CANH和CANL管脚都有波形，但是通过CANMonitor接收不到数据。

求各位大神指点明路呀！！

mangui zhang：

参考一下最新版的controlSUITE提供的例程吧

#include "F28x_Project.h" // Device Headerfile and Examples Include File
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "inc/hw_can.h"
#include "driverlib/can.h"

volatile unsigned long g_ulMsgCount = 0;

volatile unsigned long g_bErrFlag = 0;

int
main(void)
{
tCANMsgObject sTXCANMessage;
tCANMsgObject sRXCANMessage;
unsigned char ucTXMsgData[4];
unsigned char ucRXMsgData[4];
InitSysCtrl();
InitGpio();
//GPIO30 – CANRXA
GPIO_SetupPinMux(5, GPIO_MUX_CPU1, 6);
//GPIO31 – CANTXA
GPIO_SetupPinMux(4, GPIO_MUX_CPU1, 6);
GPIO_SetupPinOptions(5, GPIO_INPUT, GPIO_ASYNC);
GPIO_SetupPinOptions(4, GPIO_OUTPUT, GPIO_PUSHPULL);

CANInit(CANA_BASE);

CANClkSourceSelect(CANA_BASE, 0);

CANBitRateSet(CANA_BASE, 200000000, 500000);// 500 kHz.

DINT;

InitPieCtrl();

IER = 0x0000;
IFR = 0x0000;

InitPieVectTable();

// HWREG(CANA_BASE + CAN_O_CTL) |= CAN_CTL_TEST;
// HWREG(CANA_BASE + CAN_O_TEST) = CAN_TEST_EXL;

// Enable the CAN for operation.
CANEnable(CANA_BASE);

*(unsigned long *)ucTXMsgData = 0;
sTXCANMessage.ui32MsgID =1 ; // CAN message ID – use 1
sTXCANMessage.ui32MsgIDMask = 0; // no mask needed for TX
sTXCANMessage.ui32Flags = MSG_OBJ_TX_INT_ENABLE; // enable interrupt on TX
sTXCANMessage.ui32MsgLen = sizeof(ucTXMsgData); // size of message is 4
sTXCANMessage.pucMsgData = ucTXMsgData; // ptr to message content

// Initialize the message object that will be used for recieving CAN
// messages.
*(unsigned long *)ucRXMsgData = 0;
sRXCANMessage.ui32MsgID = 1; // CAN message ID – use 1
sRXCANMessage.ui32MsgIDMask = 0; // no mask needed for TX
sRXCANMessage.ui32Flags = MSG_OBJ_NO_FLAGS; //
sRXCANMessage.ui32MsgLen = sizeof(ucRXMsgData); // size of message is 4
sRXCANMessage.pucMsgData = ucRXMsgData; // ptr to message content

// Setup the message object being used to receive messages
CANMessageSet(CANA_BASE, 2, &sRXCANMessage, MSG_OBJ_TYPE_RX);

for(;;)
{

CANMessageSet(CANA_BASE, 1, &sTXCANMessage, MSG_OBJ_TYPE_TX);

DELAY_US(1000*1000);

// Get the receive message
CANMessageGet(CANA_BASE, 2, &sRXCANMessage, true);
.
(*(unsigned long *)ucTXMsgData)++;

}

}

这是TI controlSUITE里的代码  将LOOPBACK的两行代码屏蔽

// HWREG(CANA_BASE + CAN_O_CTL) |= CAN_CTL_TEST;
// HWREG(CANA_BASE + CAN_O_TEST) = CAN_TEST_EXL;

CAN控制芯片为sn65hvd230，通过示波器测CAN芯片的TX、RX、CANH和CANL管脚都有波形，但是通过CANMonitor接收不到数据。

求各位大神指点明路呀！！

shook xu：

先保证你的canmonitor设置是否正确，波特率是否对应，是否设置了接收滤波，如果都正确降低一下波特率再试一试，原来我碰到过1M通信速率也通信不上的问题，降低波特率就好了，主要原因还是canmonitor的时钟和28377的还是不太同步（在高波特率的情况下）

#include "F28x_Project.h" // Device Headerfile and Examples Include File
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "inc/hw_can.h"
#include "driverlib/can.h"

volatile unsigned long g_ulMsgCount = 0;

volatile unsigned long g_bErrFlag = 0;

int
main(void)
{
tCANMsgObject sTXCANMessage;
tCANMsgObject sRXCANMessage;
unsigned char ucTXMsgData[4];
unsigned char ucRXMsgData[4];
InitSysCtrl();
InitGpio();
//GPIO30 – CANRXA
GPIO_SetupPinMux(5, GPIO_MUX_CPU1, 6);
//GPIO31 – CANTXA
GPIO_SetupPinMux(4, GPIO_MUX_CPU1, 6);
GPIO_SetupPinOptions(5, GPIO_INPUT, GPIO_ASYNC);
GPIO_SetupPinOptions(4, GPIO_OUTPUT, GPIO_PUSHPULL);

CANInit(CANA_BASE);

CANClkSourceSelect(CANA_BASE, 0);

CANBitRateSet(CANA_BASE, 200000000, 500000);// 500 kHz.

DINT;

InitPieCtrl();

IER = 0x0000;
IFR = 0x0000;

InitPieVectTable();

// HWREG(CANA_BASE + CAN_O_CTL) |= CAN_CTL_TEST;
// HWREG(CANA_BASE + CAN_O_TEST) = CAN_TEST_EXL;

// Enable the CAN for operation.
CANEnable(CANA_BASE);

*(unsigned long *)ucTXMsgData = 0;
sTXCANMessage.ui32MsgID =1 ; // CAN message ID – use 1
sTXCANMessage.ui32MsgIDMask = 0; // no mask needed for TX
sTXCANMessage.ui32Flags = MSG_OBJ_TX_INT_ENABLE; // enable interrupt on TX
sTXCANMessage.ui32MsgLen = sizeof(ucTXMsgData); // size of message is 4
sTXCANMessage.pucMsgData = ucTXMsgData; // ptr to message content

// Initialize the message object that will be used for recieving CAN
// messages.
*(unsigned long *)ucRXMsgData = 0;
sRXCANMessage.ui32MsgID = 1; // CAN message ID – use 1
sRXCANMessage.ui32MsgIDMask = 0; // no mask needed for TX
sRXCANMessage.ui32Flags = MSG_OBJ_NO_FLAGS; //
sRXCANMessage.ui32MsgLen = sizeof(ucRXMsgData); // size of message is 4
sRXCANMessage.pucMsgData = ucRXMsgData; // ptr to message content

// Setup the message object being used to receive messages
CANMessageSet(CANA_BASE, 2, &sRXCANMessage, MSG_OBJ_TYPE_RX);

for(;;)
{

CANMessageSet(CANA_BASE, 1, &sTXCANMessage, MSG_OBJ_TYPE_TX);

DELAY_US(1000*1000);

// Get the receive message
CANMessageGet(CANA_BASE, 2, &sRXCANMessage, true);
.
(*(unsigned long *)ucTXMsgData)++;

}

}

这是TI controlSUITE里的代码  将LOOPBACK的两行代码屏蔽

// HWREG(CANA_BASE + CAN_O_CTL) |= CAN_CTL_TEST;
// HWREG(CANA_BASE + CAN_O_TEST) = CAN_TEST_EXL;

CAN控制芯片为sn65hvd230，通过示波器测CAN芯片的TX、RX、CANH和CANL管脚都有波形，但是通过CANMonitor接收不到数据。

求各位大神指点明路呀！！

qin situ：

请问你这个问题解决了吗？我也遇到同样的问题，求指点。

#include "F28x_Project.h" // Device Headerfile and Examples Include File
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "inc/hw_can.h"
#include "driverlib/can.h"

volatile unsigned long g_ulMsgCount = 0;

volatile unsigned long g_bErrFlag = 0;

int
main(void)
{
tCANMsgObject sTXCANMessage;
tCANMsgObject sRXCANMessage;
unsigned char ucTXMsgData[4];
unsigned char ucRXMsgData[4];
InitSysCtrl();
InitGpio();
//GPIO30 – CANRXA
GPIO_SetupPinMux(5, GPIO_MUX_CPU1, 6);
//GPIO31 – CANTXA
GPIO_SetupPinMux(4, GPIO_MUX_CPU1, 6);
GPIO_SetupPinOptions(5, GPIO_INPUT, GPIO_ASYNC);
GPIO_SetupPinOptions(4, GPIO_OUTPUT, GPIO_PUSHPULL);

CANInit(CANA_BASE);

CANClkSourceSelect(CANA_BASE, 0);

CANBitRateSet(CANA_BASE, 200000000, 500000);// 500 kHz.

DINT;

InitPieCtrl();

IER = 0x0000;
IFR = 0x0000;

InitPieVectTable();

// HWREG(CANA_BASE + CAN_O_CTL) |= CAN_CTL_TEST;
// HWREG(CANA_BASE + CAN_O_TEST) = CAN_TEST_EXL;

// Enable the CAN for operation.
CANEnable(CANA_BASE);

*(unsigned long *)ucTXMsgData = 0;
sTXCANMessage.ui32MsgID =1 ; // CAN message ID – use 1
sTXCANMessage.ui32MsgIDMask = 0; // no mask needed for TX
sTXCANMessage.ui32Flags = MSG_OBJ_TX_INT_ENABLE; // enable interrupt on TX
sTXCANMessage.ui32MsgLen = sizeof(ucTXMsgData); // size of message is 4
sTXCANMessage.pucMsgData = ucTXMsgData; // ptr to message content

// Initialize the message object that will be used for recieving CAN
// messages.
*(unsigned long *)ucRXMsgData = 0;
sRXCANMessage.ui32MsgID = 1; // CAN message ID – use 1
sRXCANMessage.ui32MsgIDMask = 0; // no mask needed for TX
sRXCANMessage.ui32Flags = MSG_OBJ_NO_FLAGS; //
sRXCANMessage.ui32MsgLen = sizeof(ucRXMsgData); // size of message is 4
sRXCANMessage.pucMsgData = ucRXMsgData; // ptr to message content

// Setup the message object being used to receive messages
CANMessageSet(CANA_BASE, 2, &sRXCANMessage, MSG_OBJ_TYPE_RX);

for(;;)
{

CANMessageSet(CANA_BASE, 1, &sTXCANMessage, MSG_OBJ_TYPE_TX);

DELAY_US(1000*1000);

// Get the receive message
CANMessageGet(CANA_BASE, 2, &sRXCANMessage, true);
.
(*(unsigned long *)ucTXMsgData)++;

}

}

这是TI controlSUITE里的代码  将LOOPBACK的两行代码屏蔽

// HWREG(CANA_BASE + CAN_O_CTL) |= CAN_CTL_TEST;
// HWREG(CANA_BASE + CAN_O_TEST) = CAN_TEST_EXL;

CAN控制芯片为sn65hvd230，通过示波器测CAN芯片的TX、RX、CANH和CANL管脚都有波形，但是通过CANMonitor接收不到数据。

求各位大神指点明路呀！！

user4938334：

你好，

1、你看一下波特率是否一样？

2、是否需要终端电阻是否正确？

3、都正确的话，试着降低波特率设置试一试

以上只是建议，如果都不行的话，那就只能是CAN配置有问题了。

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