TMS320F280049C: Memory Issue

Gaoqishuai Qian

Part Number: TMS320F280049C

Hi,

I am using the CAN transceiver on the board to transmit the data through CAN between two TMS320F280049C boards. If I build the file in CPU1_LAUCHXL_FLASH, it works well. However, now I want to run the code into the CPU1_FLASH, which does not transmit anymore. The code is stocked in receiving the auto-response for the remote request and it seems like it cannot respond to that.

My question is, does the transceiver on the board work in CPU1_FLASH? Do I need to add an external CAN transceiver? Does CAN work in CPU1_FLASH?

Raf

over 2 years ago

0 Pranali Gaydhane over 2 years ago

TI__Prodigy 470 points

Hi,

The expert is out of the office because of Holiday. Please expect a reply by Tuesday.

Thanks.

+1 Hareesh Janakiraman over 2 years ago

TI__Guru* 95315 points

Gaoqishuai Qian said:
If I build the file in CPU1_LAUCHXL_FLASH, it works well.

I presume you actually wanted to say CPU1_LAUNCHXL_RAM and not CPU1_LAUCHXL_FLASH. In other words, your code is running OK from RAM right now and you want to run it from Flash.

Gaoqishuai Qian said:
My question is, does the transceiver on the board work in CPU1_FLASH? Do I need to add an external CAN transceiver?

The transceiver does not know (or care) whether the code is running out of flash or RAM.

Gaoqishuai Qian said:
Does CAN work in CPU1_FLASH?

Yes. I think this is the case of code running fine from RAM but not from flash. This has been discussed numerous times on the forum before. Please see https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/757590.

0 Gaoqishuai Qian over 2 years ago in reply to Hareesh Janakiraman

Prodigy 20 points

Thanks for your response, now my issue is that I have two parts of code and I am trying to combine them. Now one part of the code (not CAN, another thing) works in CPU1_FLASH, and CAN as you said should be run in CPU1_RAM or CPU1_LAUNCHXL_RAM. How can I combine these two?

0 Gaoqishuai Qian over 2 years ago in reply to Gaoqishuai Qian

Prodigy 20 points

Oh, I forgot to check the link, thank you so much.

0 Gaoqishuai Qian over 2 years ago in reply to Hareesh Janakiraman

Prodigy 20 points

Hello,

I find the issue now is that we are trying to combine the CAN with SCI, and both of them work individually. SCI receives data and then CAN transmits the data to another board. SCI has some settings with delay and interrupt, will that affect CAN module? CAN does not have any interruptions.

0 Hareesh Janakiraman over 2 years ago in reply to Gaoqishuai Qian

TI__Guru* 95315 points

Gaoqishuai Qian said:
SCI has some settings with delay and interrupt, will that affect CAN module?

No.

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TMS320F280049C: Memory Issue