topic No Rx data in loopback mode in CAN module for Freertos in MQX Software Solutions

No Rx data in loopback mode in CAN module for Freertos

prashantsathe — Mon, 04 Jul 2016 12:24:52 GMT

Hi,

I am working in CAN module MAC57D5MB. As i am having a single board device So i am checking the CAN in loopback mode. Struggling for three days still i am not able to get an RX data(even RX IFLAG). When i transfer a TX data i am able to get an IFLAG bit(asserted). Here i am taking an reference from stable MQX code.

Could be give me some hint/path to check the same.

below is my memory status for CAN module.

------------------------------------------------------------------------

0x400F8000 : 0x400F8000 <Hex>

Address 0 - 3 4 - 7 8 - B C - F

400F8000 0F008200 5630ED02 8A800000 00000000

400F8010 00008C04 00000000 00000000 00000000

400F8020 80000400 00000000 00020000 00000000

400F8030 00200000 00008000 00600000 00000000

400F8040 00000000 E2750D00 FFFFFFFF 00000000

400F8050 A5184300 00000000 02001600 0F000000

400F8060 00000000 00000000 00000000 00000000

400F8070 00000000 00000000 00000000 00000000

400F8080 00000008 00000000 00000000 00000000

400F8090 00000004 00000000 00000000 00000000

400F80A0 00000004 00000000 00000000 00000000

400F80B0 00000004 00000000 00000000 00000000

400F80C0 00000004 00000000 00000000 00000000

400F80D0 00000004 00000000 00000000 00000000

400F80E0 00000004 00000000 00000000 00000000

------------------------------------------------------------------------

RX_mailbox_num = 9;

TX_mailbox_num = 13;

RX_identifier = 0x123;

TX_identifier = 0x321;

/* RX fifo needed? */ FALSE,

/* RX message buffer needed? */ TRUE

If you need any other information please do let me know.

-Prashant

Re: No Rx data in loopback mode in CAN module for Freertos

danielchen — Tue, 05 Jul 2016 11:57:03 GMT

Hi Prashant:

Here is a CAN loop back demo in KSDK 2.0 You can refer to it.

SDK_2.0_TWR-K64F120M\boards\twrk64f120m\driver_examples\flexcan\loopback

You can get KSDK package from “http://kex-stage.freescale.net”.

Regards

Daniel

Re: No Rx data in loopback mode in CAN module for Freertos

prashantsathe — Tue, 05 Jul 2016 12:01:31 GMT

Site is not reachable ...

Re: No Rx data in loopback mode in CAN module for Freertos

danielchen — Tue, 05 Jul 2016 13:32:14 GMT

Please try this

Welcome to Kinetis Expert | Kinetis Expert

Re: No Rx data in loopback mode in CAN module for Freertos

prashantsathe — Tue, 05 Jul 2016 18:03:18 GMT

Thanks for reply.

This is based on "MK64FN1M0VMD12". mine is "MAC57D5MB".

So does this helpful to me ?

If yes then i ll go ahead to check this. Otherwise would have no meaning to go ahead.

Your reply is appreciated.

-Prashant

Re: No Rx data in loopback mode in CAN module for Freertos

danielchen — Wed, 06 Jul 2016 09:44:33 GMT

Sorry I made a mistake. MAC57D5MB is quite different. The MQX space is mainly focusing on Kinetis devices. I don't have a demo based on MAC57D5MB.

You have an option to post your question at Automotive community for quick answers.

Regards

Daniel