TDA2EVM5777: How to use CAN bus in RTOS?

Wall-E

Expert 1706 points

Part Number: TDA2EVM5777

Hi,

I want to use CAN bus in RTOS, is TI provide the driver(API) ?

Regards

over 5 years ago

0 Yordan Kamenov over 5 years ago

TI__Mastermind 42515 points

Hi,

can you check if this document helps:

Regards,

Yordan

0 Yordan Kamenov over 5 years ago in reply to Yordan Kamenov

TI__Mastermind 42515 points

Hi Wall-E,

please disregard my previous answer, I missed that you are using TDA2x.

You can check this example and see if it works for you:

Regards,

Yordan

0 Wall-E over 5 years ago in reply to Yordan Kamenov

Expert 1706 points

Hi Yordan,

So sorry I reply so late. I have another question: How do I compile the example in sdk_3.07/ti_components/drivers/pdk_01_10_03_07/packages/ti/csl/example/mcan/mcanEvmLoopback ?

Regards,

0 Yordan Kamenov over 5 years ago in reply to Wall-E

TI__Mastermind 42515 points

Hi Wall-E,

please check here:

Regards,

Yordan

0 Wall-E over 5 years ago in reply to Yordan Kamenov

Expert 1706 points

Hi Yordan,

It seems the PDK CAN driver is independent of VisionSDK. And I have no JTAG debuger to download the binary object.

Is a way to use CAN in VisionSDK? Like I can capture image from camera through IssCapute Link. I want to use CAN or other peripheral like camera.

Regards.

0 Wall-E over 5 years ago in reply to Yordan Kamenov

Expert 1706 points

Hi Yordan,

Could you give me some idea ?

0 Yordan Kamenov over 5 years ago in reply to Wall-E

TI__Mastermind 42515 points

H Wall-E,

I have pinged CAN experts, they will reply here soon.

Regards,

Yordan

0 Vivek Dhande over 5 years ago in reply to Yordan Kamenov

TI__Expert 5615 points

Hi Wall-E,

TDA2 does not have an MCAN module in it. Instead of that, it has a DCAN module that does the handling of the CAN protocol. The sample application for DCAN is available here: 'pdk\packages\ti\csl\example\dcan\dcanLoopback'. You can try this application.

VSDK does have a use-case available for the DCAN module which is available at '\vision_sdk\apps\src\rtos\modules\dcan'. I think this is only available/validated for TDA3x SoC. You can port the same use-case for TDA2x.

Thanks & Regards,
Vivek Dhande.

Texas Instruments (India) Pvt Ltd

0 Wall-E over 5 years ago in reply to Vivek Dhande

Expert 1706 points

Hi Dhande,

Thank you for your reply.

Regards.

0 Wall-E over 5 years ago in reply to Vivek Dhande

Expert 1706 points

Hi Dhande,

I want to port this usecase for TDA2Px, I search the topic in forum and found this:

https://e2e.ti.com/support/processors/f/791/t/726840?tisearch=e2e-sitesearch&keymatch=tda2%25252525252520dcan

And I meet the same problem, I cannot receive data from a external CAN device but the external CAN device can receive the data from TDA2Px when using loopback mode.

The author said he resolve this problem through Need modify "platform_tda2xx_pad_config.c" setting to modify RX pin of DCAN form AD17 (Wakeup0) to G19(dcan1_rx) if use TDA2x EVM. But I still don't know how to modify because I didn't find this configuration. Perhaps we use the different VisionSDK version. Mine is 3.07.

So could you tell me How to receive data from external CAN device in VisionSDK 3.07 in TDA2Px ?

Regards

0 Vivek Dhande over 5 years ago in reply to Wall-E

TI__Expert 5615 points

Hi Wall-E,

Looks like you are facing the same issue. Can you please configure DCAN-RX PAD on TDA2Px?

Thanks & Regards,
Vivek Dhande.

Texas Instruments (India) Pvt Ltd

0 Vivek Dhande over 5 years ago in reply to Wall-E

TI__Expert 5615 points

Hi Wall-E,

To port existing DCAN use-case from TDA3x to TDA2Px, you need to take care of the following:

Module and clock enable for the DCAN module, this probably will be same for both the SoCs
IO PAD (dcan_xta nd dcan_rx) configurations
interrupt configurations

To do the PAD configurations:

You can add your own API in the file 'ti_components\drivers\pdk_xx_xx_xx_xx\packages\ti\drv\stw_lld\platform\src\tda2xx\platform_tda2xx_pad_config.c' and call it in the application OR you can modify the existing one also.

Please refer to 'PlatformDCAN1PadConfig' API present in the same file for more details.

Thanks & Regards,
Vivek Dhande.

Texas Instruments (India) Pvt Ltd

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TDA2EVM5777: How to use CAN bus in RTOS?