AM263P4: where is an mcan_external_read_write example that doesn't require CANFD for the AM263Px-CC

Calum Meiklejohn

Part Number: AM263P4
Other Parts Discussed in Thread: TCA6424, CCSTUDIO

Tool/software:

Hello,
I am trying to simply prove that standard CAN actually works on the AM263Px-CC but I'm having problems.
I have downloaded and installed AM263Px MCU+ SDK 10.01.00
I can create compile, flash and debug example projects onto the board successfully but I cannot get any CAN messages to be sent from the board.
I don't have a PCAN adapter that talks CAN FD so I assume that is why I can't see any CAN messages being sent. I only have standard PCAN-USB adapters.
I don't care about CAN FD I just want to test standard CAN messages but I can't find an example to do this.

I see that the example
MCAN External Read Write says it uses the

CAN FD Message Format.

There is already another example project called CANFD External Read Write that also uses CAN FD.

Why is the MCAN example using using CAN FD?
Where is an example project that just sends normal CAN messages not CAN FD?

What else do I need to do to get the AM263Px-CC to send a standard CAN message?

Regards,

Calum

5 months ago

+1 Aswathi R 5 months ago

TI__Intellectual 1000 points

Hi Calum,

Can you please try the solution mentioned in this thread and let me know if it works?
AM263P4-Q1: How to covert MCAN FD example from MCU+SDK 10.0.0.35 into standard CAN - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

Best Regards,
Aswathi

+1 Calum Meiklejohn 5 months ago in reply to Aswathi R

Prodigy 10 points

Ok that example solved my issues but only after changing the function

mcanEnableTransceiver()

I had to add this line outside of the board version check

status = TCA6424_Transceiver();

So the total function was changed to this.

void mcanEnableTransceiver()
{
 int32_t status = SystemP_SUCCESS;
 uint8_t boardVer[2] = "";

 Board_eepromOpen();

 status = EEPROM_read(gEepromHandle[CONFIG_EEPROM0], EEPROM_OFFSET_READ_PCB_REV, boardVer, EEPROM_READ_PCB_REV_DATA_LEN);
 if(status == SystemP_SUCCESS)
 {
 status = TCA6424_Transceiver();
 if(boardVer[1] == BOARD_VERSION_E2)
 {
 /* boardVer is E2 */
 status = TCA6424_Transceiver();
 }
 else
 {
 /* boardVer is E1 */
 /* MCAN Transceiver is enabled by default in E1*/
 }
 }

 DebugP_assert(status == SystemP_SUCCESS);
 Board_eepromClose();
}

My dev board is a version A0 apparently so the boardVer returns 'A' '0'
This question explains the issue better.
https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1457589/am263p4-q1-required-changes-to-run-mcan-example-in-am263px-control-card-with-assy-proc159a-001/5596673?tisearch=e2e-sitesearch&keymatch=BOARD_VERSION_E2#5596673

Can TI get this fixed in the examples soon so less people run into this issue and spend days trying to get a simple CAN bus working on a dev board?

0 Aswathi R 5 months ago in reply to Calum Meiklejohn

TI__Intellectual 1000 points

Hi Calum,

Are you using the latest MCU SDK 10_01_00_34 released in March? These issues are fixed in the latest release. You can find it here: MCU-PLUS-SDK-AM263PX Software development kit (SDK) | TI.com

Best Regards,
Aswathi

0 Calum Meiklejohn 5 months ago in reply to Aswathi R

Prodigy 10 points

Yes I installed the mcu_plus_sdk_am263px_10_01_00_34-linux-x64-installer.run

When I click on create a project in CCStudio and then I choose an example project in the CCStudio GUI is this using the examples from the installed SDK or is it somehow using examples from an older online version or something?

0 Nilabh Anand 5 months ago in reply to Calum Meiklejohn

TI__Mastermind 45814 points

Please check the in Project properties, Under product which sdk version is selected.

Another way could be to use a fresh new workspace.

0 Calum Meiklejohn 5 months ago in reply to Nilabh Anand

Prodigy 10 points

Ok If I select File -> Create new Project then select an example from the install location of the SDK mcu_plus_sdk_am263px_10_01_00_34 for example the mcan_external_read_write_am263px-cc_r5fss0-0_nortos_ti-arm-clang example project then it works as expected and I see the latest version of this code. The dev board correctly reads and writes CAN messages.

If however I use the CCStudio project wizard (which is the first screen CCStudio shows a new user) and click Create new project then select the same example it uses an different older outdated version of the example project. Using this version of the mcan_external_read_write_am263px-cc_r5fss0-0_nortos_ti-arm-clang doesn't work. Even if you look at the Project properties of this example project is says it is using the right SDK version but the code base of the example has the above problems.

Can TI fix this so the CCStudio project wizard doesn't give user old outdated examples that don't work. This was a real time waster for me and frustrating that a tool designed to help new users get started actually hinders them and leads them astray.

0 Nilabh Anand 5 months ago in reply to Calum Meiklejohn

TI__Mastermind 45814 points

Hi Calum,

Are you using CCS 12.8.1 or CCS theia?