topic Re: Always loopbacking the CAN send messages in Kinetis Microcontrollers

Always loopbacking the CAN send messages

dileep_divakara — Mon, 03 Jun 2019 05:35:01 GMT

Hi,

I am working with CAN interface in FRDM KW36 board. The basic functionalities of CAN( TX and RX ) is working. But whenever I send the message to the CAN is loop-backing. I disabled the loop-back configuration, but still it is loop-backing.I don'k know why its behaving like. Please help me to figure out the issue.

here is my initialization code snippet.

flexcan_config_t flexcan_config;

FLEXCAN_GetDefaultConfig(&flexcan_config);
flexcan_config.enableLoopBack = false;
flexcan_config.baudRate = CAN_BITRATE;
flexcan_config.enableSelfWakeup = true;
flexcan_config.clkSrc = kFLEXCAN_ClkSrcPeri;

if (can_initialised)
FLEXCAN_Deinit(DEVICE_CAN);

FLEXCAN_Init(CAN0, &flexcan_config, CAN_CLK_FREQ);

FLEXCAN_TransferCreateHandle(DEVICE_CAN, &can_handle, __dal_can_driver_callback, NULL);
FLEXCAN_SetTxMbConfig(DEVICE_CAN, TX_MESSAGE_BUFFER_NUM_CAN, true);
FLEXCAN_SetRxFifoGlobalMask(DEVICE_CAN, FLEXCAN_RX_MB_STD_MASK(0, 0, 0));
FLEXCAN_SetRxFifoConfig(DEVICE_CAN, &rx_fifo_config, true);

Re: Always loopbacking the CAN send messages

Robin_Shen — Tue, 04 Jun 2019 02:20:49 GMT

Hi Dileep Divakaran,

Please check the configuration of CAN_MCR[SRXDIS].

Best Regards,

Robin

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Re: Always loopbacking the CAN send messages

dileep_divakara — Wed, 12 Jun 2019 08:25:43 GMT

Thanks Robin Shen.

It worked. Now I am able to disable the CAN loop-back