FlexCAN receive all CAN messages on the bus?

[nikola1]

Hi,

I am trying to receive all messages on CANbus while using example twrke18f_flexcan_interrupt_transfer.

Board is: twr-ke18f.

While all works excellent with one CAN ID, I don't understand what should be configured to get all messages on CAN.

Tried searching for some documentation that would explain it or source or anything... but it all came with nothing.

What kind of function calls or filters or masks should be disabled so that it can receive all message on the CAN.

Here is my code:

txIdentifier = 0x321;
rxIdentifier = 0x123;

FLEXCAN_Init(EXAMPLE_CAN, &flexcanConfig, EXAMPLE_CAN_CLK_FREQ);

/* Create FlexCAN handle structure and set call back function. */
FLEXCAN_TransferCreateHandle(EXAMPLE_CAN, &flexcanHandle, flexcan_callback, NULL);

/* Set Rx Masking mechanism. */
FLEXCAN_SetRxMbGlobalMask(EXAMPLE_CAN, FLEXCAN_RX_MB_STD_MASK(rxIdentifier, 0, 0));

/* Setup Rx Message Buffer. */
mbConfig.format = kFLEXCAN_FrameFormatStandard;
mbConfig.type = kFLEXCAN_FrameTypeData;
mbConfig.id = FLEXCAN_ID_STD(rxIdentifier);

FLEXCAN_SetRxMbConfig(EXAMPLE_CAN, RX_MESSAGE_BUFFER_NUM, &mbConfig, true);

/* Setup Tx Message Buffer. */

FLEXCAN_SetTxMbConfig(EXAMPLE_CAN, TX_MESSAGE_BUFFER_NUM, true);

Thank you for helping out in advance.

[nikola1]

Hi,

thank you for helping out, it works!!

BR,

Nikola.

[nxf56274]

Hi,

FLEXCAN_SetRxMbGlobalMask(EXAMPLE_CAN, FLEXCAN_RX_MB_STD_MASK(rxIdentifier, 0, 0));

Try to modify "rxIdentifier" to 0.

Have a great day,
TIC

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