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SofLit
ST Employee
since ‎2018-07-23
‎2024-07-19

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CAN reception issues: Reasons and general troubleshooting

2024-07-15
Introduction CAN bus is a robust protocol to transmit/receive data. It can be very sensitive to any issue that could lead to communication errors or even halt communication. STM32 users need to have a basic knowledge of the CAN bus (protocol + hardwa...

Can I use a CAN2.0A/CAN2.0B transceiver to transmit CANFD frames with an FDCAN peripheral on STM32?

2024-07-01
No. This is only possible if the communication bitrate does not exceed 1 Mb/s. A CAN2.0A/B transceiver cannot pass through bitrates > 1 Mb/s and transmitting higher bitrates could lead to communication errors due to distortions in bits. Find below...

Can I use a CANFD transceiver to transmit CAN2.0A/CAN2.0B frames with a bxCAN peripheral on STM32?

2024-07-01
Yes, it is possible. The transceiver does not have the intelligence to differentiate between CANFD and CAN2.0A/B and filter the CAN frame accordingly. It is just an active component that transforms digital signals to differential signals. The most i...
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