CAN Communication Not Working on STM32F746 — No Frames on Bus MASTER or PCAN

[Akhila_17]

Hi everyone,

I’m working on CAN communication using STM32F746 in STM32CubeIDE.
My goal is to transmit CAN frames continuously and verify them using BusMaster or PEAK CAN analyzer,but I’m not seeing any CAN frames on the bus.

To help review my setup, I have attached my project ZIP file below.
Could someone please check and confirm:

1. If my CAN clock configuration is correct

2. Whether the CAN2 TX/RX pins are configured with the right alternate functions

3. If my main.c code for CAN initialization and transmission looks correct

4. Whether I need any filter configuration even if I only want to transmit

Setup details:

• Controller: STM32H746

• Interface: CAN1

• Mode: Normal

• Baud rate: 500 kbps

• TX/RX Pins: [PD0/PD1]

• Using HAL drivers
  Can you please  check with my project and help me out .

[mƎALLEm]

So you need to check again your hardware I suspect something wrong in your hardware: either in the transceiver itself (it could be defective), its power supply is not well connected to 5V or it's an issue your wiring (so test the continuity on CAN_H and CAN_L)! I don't see something wrong in the code you shared in your first post.