STM32F407 CAN Loopback Mode work but Normal Mode not working

[Sergen]

Hello, I am trying to establish standard CAN communication between the sn65hvd230 IC and the stm32f4 discovery and stm32f103. While the loopback mode works fine, when it sends data to the normal mode, the output goes to 0 and then back to 1. I still haven't found a solution.

[Sergen]

I noticed that there is a Bit recessive Error in the SFR section, how can I fix this?

[Tesla DeLorean]

No details on your settings or what else is on bus responding or interacting. 

[Sergen]

Currently, the transceiver circuit is connected to the stm32f407, but there is no device with which it interacts and the register called LEC in the SFR section gives a bit recessive error.
Here's how I get it

[Tesla DeLorean]

Surely easier to cut-n-paste

Running from a 84 MHz bus, perhaps 1 Mbps? 500 kbps at 42 MHz.

Are you sure there's not a better balance of Prescaler, SJW, BS1, BS2 settings?

Perhaps SJW =1, BS1 = 4, BS2 = 2 or SJW =1, BS1 = 5, BS2 = 1

Loopback doesn't need a responding/acknowledging device on the bus, Normal mode does.

[Tesla DeLorean]

Should perhaps be looking at the circuit and performance electrically. Error suggests it's not in control of the state of the bus, perhaps feedback via CAN RX is compromised. 

[Sergen]

Yes, what you said may be true because when I disconnected the CANbus transceiver, an acknowledge error was seen in the LEC Register bit instead of a timing error.

[PranavGurav]

Hi @Sergen 
I am also facing an issue in CAN normal mode. Can you please help me to resolve this issue.