LPC MicrocontrollersのトピックRe: Implementing CANOpen - Starting from LPCOpen

Implementing CANOpen - Starting from LPCOpen

abderrezak — Wed, 20 Jul 2016 18:22:02 GMT

Hi Dear All,

Because many people like me are searching for an implementation of the CANOpen on the LPC microcontrollers, I have decide to start a project to implement the CANOpen layer, with your help, using LPCOpen (periph_can example) and the following open source CANOpen Node: GitHub - CANopenNode/CANopenNode: CANopen stack base.

First of all, I have never use CAN before. I am working to well understand the LPCOpen CAN controller example.

My First question is related to the Acceptance Filter LookUp Table: how can the following code (from LPCOpen)

CAN_STD_ID_ENTRY_T FullCANSection[] = {   {CAN_CTRL_NO, 0, 0x03},   {CAN_CTRL_NO, 0, 0x05},   {CAN_CTRL_NO, 0, 0x07},   {CAN_CTRL_NO, 0, 0x09}, };

accept the followings id 0x03, 0x04, 0x07, 0x09 (regarding to the readme and confirmed by CAN analyzer)?

What is the difference between Full CAN Section, Individual Standard ID Section & Standard ID Range Section?

Thank you

Re: Implementing CANOpen - Starting from LPCOpen

kerryzhou — Mon, 25 Jul 2016 07:33:32 GMT

Hi abderrezak,

Please tell us what the LPC chip and LPCopen code you are using?

We need the part number of your LPC chip, then I can help you to check it and answer your questions with the according LPCopen code.

Waiting for your reply!

Jingjing

Re: Implementing CANOpen - Starting from LPCOpen

abderrezak — Mon, 25 Jul 2016 07:38:58 GMT

Hi Zhou,

I'm working on the LPC1788, using the LPCOpen (v1.03 I think), the one you find with the EA example codes on the LPCXpresso IDE

Re: Implementing CANOpen - Starting from LPCOpen

kerryzhou — Mon, 25 Jul 2016 09:43:49 GMT

Hi abderrezak,

Thank you for your reply.

About how the Full CAN section works, and the the difference between Full CAN Section, Individual Standard ID Section & Standard ID Range Section, you can find the detail description in the user manual, chapter 16.13 ID look-up table RAM.

Please read the user manual at first:

http://www.nxp.com/documents/user_manual/UM10470.pdf?fasp=1&WT_TYPE=Users%20Guides&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pd…

page 588.

After you read the user manual, if you still have doubt, please let me know!

Have a great day,
Jingjing

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