the objective of this particular project was to transmit data frames from stm32h750dbk(discovery kit) to stm32g491re(nucleo)
it is debugging and creating live expression for both of the data types in receiving and transmit end of board i have not connected any transceiver between them because it has inbuilt fdcan ports
i am attaching both the codes for g4 and h7
the picture of hardware and the live expression result when debugged separately
@revvathi wrote:
https://www.nxp.com/docs/en/data-sheet/TJA1050.pdf
you can refer to the above
This is the datasheet of the transceiver not the schematics of the module.
OK what you need to check: S pin is connected to the GND. Could you please confirm?
Is there a 120ohm already soldered on the board? in that case you don't need to add an external 120 ohm terminating resistor. From the DISCO side, there is a 120ohm resistor but you need to fit
You need also to fit the jumper JP7 to connect that resistor:
@revvathi wrote:
there is no S pin on the board to ground it
I didn't understand what do you mean by that.
Meanwhile you have an issue in CAN bitrate:
H7:
G4:
These bitrates don't match!
As I said previously if you are not familiar with the CAN/CAN-FD protocols, you need to study them before going ahead with the development.
i have changed the bit rates according to the calculation on kvaser website
But the Nominal bitrate still having strange bitrate value:
What is your target Nominal bitrate?
