F28M35H52C: CAN messages sent but not received

Mark C

Part Number: F28M35H52C
Other Parts Discussed in Thread: ISO1050

I am working with the CAN module on the F28M35H52C MCU.

I can send messages out to devices on the bus but I cannot receive any messages. Hardware-wise I have checked the messages are getting to the Rx pin of the MCU but the CAN core does not capture anything in the data registers.

Does anybody have any suggestions on receiving CAN messages?

over 7 years ago

0 Gautam Iyer over 7 years ago

Guru 192875 points

Hi Mark,

Can you share the test setup details? Is this a custom board or eval kit?

Regards,
Gautam

0 Harsh Singh over 7 years ago in reply to Gautam Iyer

TI__Expert 3795 points

Hi Mark,

Can you let me know a few things.

1. Is there CAN Transceivers connected to the CAN Controller?
2. Are you configuring the CAN Message Object Properly?
3. Did you check in the message RAM for the Mask and other Config Values?
4. Is the Message Ram Being initialized?

Thanks and Regards
Harshmeet Singh

0 Mark C over 7 years ago in reply to Gautam Iyer

Prodigy 180 points

Hi Gautam,

I have the Concerto F28M35 controlCARD plugged into a custom development board.

We are using GPIO12 & 13, (M_CAN0RX & M_CAN0TX). These lines connect to an ISO1050 transceiver which is connected to the CAN bus.

0 Mark C over 7 years ago in reply to Harsh Singh

Prodigy 180 points

Hi Harshmeet,

For (1) see my response to Gautam.

I will review the settings and message RAM.

Thanks for response

0 Harsh Singh over 7 years ago in reply to Mark C

TI__Expert 3795 points

Any update?

Regards
Harshmeet

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F28M35H52C: CAN messages sent but not received