CCS/TMS570LC4357: CAN RTR Example

Suthan Sivamayam

Prodigy 180 points

Part Number: TMS570LC4357

Tool/software: Code Composer Studio

Is there any application examples for DCAN remote ?

I developed a simple CAN project to request a 2 bytes of data from a second ECU when user press the button

Here are my configurations:

Requester (CAN1 Message settings)

Respondent (CAN message settings)

I used canSendRemoteFrame(canREG1, canMESSAGE_BOX2); periodically get the message from respondent when user press a button.

At the requester end I used (under void canMessageNotification(canBASE_t *node, uint32 messageBox)

if(canIsRxMessageArrived(canREG2, canMESSAGE_BOX2))

{

canTransmit(canREG2, canMESSAGE_BOX3, (const uint8 *)&data);

}

When I press the button requester receives a 2 bytes of data first time from respondent. After that no interrupt is fired when user press the button (no data transmission).

over 5 years ago

0 QJ Wang over 5 years ago

TI__Guru**** 197356 points

Hello Suthan,

1. For remote frame, the node should be configured as a receiver.

2. For node who responses the request of the frame frame, it should be configured as a transmitter.

0 Suthan Sivamayam over 5 years ago in reply to QJ Wang

Prodigy 180 points

Thanks QJ, Its working now.

I add my new configurations and result. This may help for other readers

Requester (CAN message settings)

Respondent (CAN message settings)

when user press the button canSendRemoteFrame(canREG1, canMESSAGE_BOX2); will be executed

Then respondent fill the requested data as follows (under : void canMessageNotification(canBASE_t *node, uint32 messageBox))

if(canIsRxMessageArrived(canREG1, canMESSAGE_BOX2))
{

u8_data[0] = (counter+1)%16;
u8_data[1] = (counter+2)%16;
canFillMessageObjectData(canREG2,canMESSAGE_BOX2, (const uint8 *)&u8_data);
}

Here is the logic analyzer capture:

Arm-based microcontrollers

Arm-based microcontrollers forum

CCS/TMS570LC4357: CAN RTR Example