topic Send and receive CAN frames on i.MX6xAI CPU2 in i.MX Processors

Send and receive CAN frames on i.MX6xAI CPU2

manhtoan — Wed, 04 May 2016 12:17:33 GMT

Hello,

i am new IMIX 6, currently i am using L3.10.53_1.1.0_iMX6QDLS_Bundle

for my board and it run.

but when i used example in SocketCAN - Wikipedia, the free encyclopedia

to send data out using Can socket,

i config :

#ip link set can0 up type can bitrate 125000

root@imx6qdlsolo:/run/media/mmcblk2p1# ./demo_can_1

can0 at index 4

Wrote 16 bytes

i use oscilloscope to measure result sinal out but i can't see any thing.

First. i don't know can0 is J34 or J35 on my board so i measure both, can0 is j34 or J35 ?

Second Please tell me why i can send can frame out (because of linux binary or some thing) help me

Any help would be greatly appreciated.

Re: Send and receive CAN frames on i.MX6xAI CPU2

igorpadykov — Thu, 05 May 2016 01:13:03 GMT

Hi manh

had you installed Auto CPU2 Yocto Project Patch, as describes attached document,

can0 should be j34, also please look at Chapter 39 FlexCAN Driver attached Linux Manual

and usage at

CAN protocol test on imx6 sabrelite board

some simple tests in unit tests (), folder /can

imx-test-5.4.tar.gz

www.nxp.com/lgfiles/NMG/MAD/YOCTO/imx-test-5.4.tar.gz

Best regards

igor

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Re: Send and receive CAN frames on i.MX6xAI CPU2

manhtoan — Thu, 05 May 2016 07:09:38 GMT

Hi,

I followed MX_6DualQuad_6DualLite_SABRE_Auto_CPU2_Yocto_Project_Patch_Release_Notes.pdf

to build image but result i have a lot of warning and error. I don't know how to fix it. Could you help me?

thank you so much.

i run:

$ MACHINE=imx6qsabreauto source fsl-setup-release.sh –b build-x11 –e x11

$ bitbake fsl-image-qt5

WARNING: Failed to fetch URL http://zlib.net/pigz/pigz-2.3.1.tar.gz, attempting MIRRORS if available

WARNING: Failed to fetch URL ftp://ftp.debian.org/debian/pool/main/b/base-passwd/base-passwd_3.5.29.tar.gz, attempting MIRRORS if available

WARNING: Failed to fetch URL http://downloads.sourceforge.net/project/libpng/libpng16/1.6.8/libpng-1.6.8.tar.xz, attempting MIRRORS if available

WARNING: Failed to fetch URL ftp://ftp.freedesktop.org/pub/mesa/9.2.5/MesaLib-9.2.5.tar.bz2, attempting MIRRORS if available

WARNING: Checksum failure encountered with download of http://www.freescale.com/lgfiles/NMG/MAD/YOCTO//imx-gpu-viv-5.0.11.p4.3-hfp.bin;fsl-eula=true - will attempt other sources if available

WARNING: Renaming /home/public/yocto_3.10.53-1.1.1/downloads/imx-gpu-viv-5.0.11.p4.3-hfp.bin to /home/public/yocto_3.10.53-1.1.1/downloads/imx-gpu-viv-5.0.11.p4.3-hfp.bin_bad-checksum_9867289adc4377b7214885da3be39220

ERROR: Fetcher failure for URL: 'http://www.freescale.com/lgfiles/NMG/MAD/YOCTO//imx-gpu-viv-5.0.11.p4.3-hfp.bin;fsl-eula=true'. Checksum mismatch!

File: '/home/public/yocto_3.10.53-1.1.1/downloads/imx-gpu-viv-5.0.11.p4.3-hfp.bin' has md5 checksum 9867289adc4377b7214885da3be39220 when 57996c100b5fdc5982f73c1ec9a9dee6 was expected

File: '/home/public/yocto_3.10.53-1.1.1/downloads/imx-gpu-viv-5.0.11.p4.3-hfp.bin' has sha256 checksum 2ab7e7cc98a1ebd8ce26ddfbde563c8911b5999016cc9e9f985233d6f5bd3f95 when 1432e3fc3d9d80fb48d236ab0bfe8201219fe09bf98728cca32cb65fe7d7d88a was expected

If this change is expected (e.g. you have upgraded to a new version without updating the checksums) then you can use these lines within the recipe:

SRC_URI[md5sum] = "9867289adc4377b7214885da3be39220"

SRC_URI[sha256sum] = "2ab7e7cc98a1ebd8ce26ddfbde563c8911b5999016cc9e9f985233d6f5bd3f95"

Otherwise you should retry the download and/or check with upstream to determine if the file has become corrupted or otherwise unexpectedly modified.

ERROR: Function failed: Fetcher failure for URL: 'http://www.freescale.com/lgfiles/NMG/MAD/YOCTO//imx-gpu-viv-5.0.11.p4.3-hfp.bin;fsl-eula=true'. Unable to fetch URL from any source.

ERROR: Logfile of failure stored in: /home/public/yocto_3.10.53-1.1.1/build/tmp/work/cortexa9hf-vfp-neon-mx6-poky-linux-gnueabi/imx-gpu-viv/1_5.0.11.p4.3-hfp-r0/temp/log.do_fetch.21164

ERROR: Task 1084 (/home/public/yocto_3.10.53-1.1.1/sources/meta-fsl-bsp-release/imx/meta-fsl-arm/recipes-graphics/imx-gpu-viv/imx-gpu-viv_5.0.11.p4.3-hfp.bb, do_fetch) failed with exit code '1'

Re: Send and receive CAN frames on i.MX6xAI CPU2

igorpadykov — Fri, 06 May 2016 10:30:41 GMT

Hi manh

for image building errors please create new community thread.

Best regards

igor

Re: Send and receive CAN frames on i.MX6xAI CPU2

manhtoan — Fri, 06 May 2016 16:58:38 GMT

i try to built and it have done but i can't run flexcan with new image

Re: Send and receive CAN frames on i.MX6xAI CPU2

igorpadykov — Sat, 07 May 2016 01:53:02 GMT

just to test flexcan please follow

All Boards FlexCAN

https://community.freescale.com/message/524947#comment-524947

i.MX6Q Linux BSP just support general Linux CAN APIs, so to support

SocketCan you may need to add additional libraries with user application

and then rebuild BSP. You may wish to use Freescale Professional Services

to develop full solution:

http://www.nxp.com/support/nxp-professional-services:PROFESSIONAL-SERVICE

Best regards

igor