topic Re: KV11 CAN Disable Receiving Transmitter Packets (echo) in Kinetis Microcontrollers

KV11 CAN Disable Receiving Transmitter Packets (echo)

abdullah_cinar — Mon, 16 Dec 2019 08:48:33 GMT

Hi,

I am trying to send and receive CAN packets between my MKV11Z64 and a custom CAN device. I disabled ID filtering, so I am receiving every packet coming from the CAN line. But the problem is I also receive the packets that I transmitted. I just want to receive the packets sent from the other device.

I attached the file that contains my CAN configurations. The echo mode is already disabled by the way.

Re: KV11 CAN Disable Receiving Transmitter Packets (echo)

Robin_Shen — Tue, 17 Dec 2019 06:05:35 GMT

Hi Abdullah,

Please check the value of CANx_MCR[SRXDIS]

Best Regards,

Robin

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Re: KV11 CAN Disable Receiving Transmitter Packets (echo)

abdullah_cinar — Sat, 28 Dec 2019 08:48:27 GMT

Hello Robin,

Thank you for your answer. I set the SRXDIS bit to 1 as you suggested. Below is the snippet for reference who finds this post. I needed to do it in FLEXCAN_Init() function in the fsl_flexcan.c file. Otherwise, it didn't work outside of this function.

mcrTemp |= (1 << 17); //disable self reception (CANx_MCR SRXDIS=1)
/* Save MCR Configuation. */
base->MCR = mcrTemp;