CCS/TM4C1294NCPDT: TM4C

Part Number: TM4C1294NCPDT

Tool/software: Code Composer Studio

Hi All,

I am using TM4C1294NCPDT micro controller for my new development, In this I am using timer, I2C, UART and other peripheral's well.

Now I want to CAN module  establishment communication with my salve board, for this I try to use CAN0 module with PA0, PA1.

I am new to CAN module one.

I wrote code with example studied in online. I think the data transmission not working properly.

Screen shots attached below and I pasted my code below. Interrupt handler working fine I think

unsigned char can_tx_buff[100];

int main(void)

{

SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480), 120000000);

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);

GPIOPinConfigure(GPIO_PA0_CAN0RX);

GPIOPinConfigure(GPIO_PA1_CAN0TX);

GPIOPinTypeCAN(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);

SysCtlPeripheralEnable(SYSCTL_PERIPH_CAN0);

CANInit(CAN0_BASE);

CANBitRateSet(CAN0_BASE, SysCtlClockGet(), 500000);

CANIntEnable(CAN0_BASE, CAN_INT_MASTER | CAN_INT_ERROR | CAN_INT_STATUS);

IntEnable(INT_CAN0);

CANEnable(CAN0_BASE);

tCANMsgObject sCANMessage;

uint8_t *pui8MsgData;

can_tx_buff[0] = 11;

can_tx_buff[1] = 0x0f;

can_tx_buff[2] = 0;

can_tx_buff[3] = 0;

can_tx_buff[4] = 0;

can_tx_buff[5] = 0;

can_tx_buff[6] = 0;

can_tx_buff[7] = 1;

pui8MsgData = (uint8_t *)&can_tx_buff;

while(1)

{

sCANMessage.ui32MsgID = 1;

sCANMessage.ui32MsgIDMask = 0;

sCANMessage.ui32Flags = MSG_OBJ_TX_INT_ENABLE;

sCANMessage.ui32MsgLen = 8;

sCANMessage.pui8MsgData = pui8MsgData;

set.Spindle_Operating_Mode = 1;

/*machine Sequence*/

if(set.Spindle_Operating_Mode == 0)

{

//check_all_moto_stat();

//process_manual_oper();

CANMessageSet(CAN0_BASE, 1, &sCANMessage, MSG_OBJ_TYPE_TX);

}

// Now wait 1 second before continuing

SimpleDelay();

}

}

//*****************************************************************************

void CANIntHandler(void)

{

uint32_t ui32Status;

// Read the CAN interrupt status to find the cause of the interrupt

ui32Status = CANIntStatus(CAN0_BASE, CAN_INT_STS_CAUSE);

if(ui32Status == CAN_INT_INTID_STATUS)

{

ui32Status = CANStatusGet(CAN0_BASE, CAN_STS_CONTROL);

}

else if(ui32Status == 1)

{

CANIntClear(CAN0_BASE, 1);

}

else

{

// Spurious interrupt handling can go here.

}

}

Regards

Yuvaraj