In S32k144 Evolution board I import Flex CAN project. Transmit functions working properly but Receive functions i didn't get Receive data by using MICROCHIP CAN BUS Analyzer.
As of my observation this Flag (CAN0->FLAG1) is not setting in Receiver function. Please help me to resolve the issue
Below is my working flow
In main(){
for (;;)
{
/* Loop: if a msg is received, transmit a msg */
if ((CAN0->IFLAG1 >> 4) & 1) { /* If CAN 0 MB 4 flag is set (received msg), read MB4 */
FLEXCAN0_receive_msg (); /* Read message */
rx_msg_count++; /* Increment receive msg counter */
if (rx_msg_count == 1000) { /* If 1000 messages have been received, */
PTD->PTOR |= 1<<16; /* toggle output port D16 (Green LED) */
rx_msg_count = 0; /* and reset message counter */
}
}
FLEXCAN0_transmit_msg (); /* Transmit message using MB0 */
}
}
void FLEXCAN0_receive_msg(void)
{
/*! Receive msg from ID 0x556 using msg buffer 4
* =============================================
*/
uint8_t j;
uint32_t dummy;
RxCODE = (CAN0->RAMn[ 4*MSG_BUF_SIZE + 0] & 0x07000000) >> 24; /* Read CODE field */
RxID = (CAN0->RAMn[ 4*MSG_BUF_SIZE + 1] & CAN_WMBn_ID_ID_MASK) >> CAN_WMBn_ID_ID_SHIFT; /* Read ID */
RxLENGTH = (CAN0->RAMn[ 4*MSG_BUF_SIZE + 0] & CAN_WMBn_CS_DLC_MASK) >> CAN_WMBn_CS_DLC_SHIFT; /* Read Message Length */
for (j=0; j<2; j++)
{ /* Read two words of data (8 bytes) */
RxDATA[j] = CAN0->RAMn[ 4*MSG_BUF_SIZE + 2 + j];
}
RxTIMESTAMP = (CAN0->RAMn[ 0*MSG_BUF_SIZE + 0] & 0x000FFFF);
dummy = CAN0->TIMER; /* Read TIMER to unlock message buffers */
CAN0->IFLAG1 = 0x00000010; /* Clear CAN 0 MB 4 flag without clearing others*/
}
