Re: NUCLEO-H503RB: FDCAN communication issue - Page 3 - STMicroelectronics Community

I am use nucleo-h503rb evk board and i am configure fdcan communication. I have mention below my code please see. I have did not comes output on FDCAN communication.

please send me demo code for that

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Again how did you connect SN65HVD230 RS pin?

According to the sketch you shared I don't see termination resistors of 120ohm on the bus: https://www.buenoptic.net/encyclopedia/item/544-can-termination-resistors-vital-part.html

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I am attached photo of SN65HVD230. I have these photo see the yello colors two pins. these two pins i have put the jumper. so it is internal 120 ohm register termination.

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Ok what about Rs pin of SN65HVD230? is it connected to the ground? if you have schematics of that module please share it otherwise you need to test it with a multimeter: disconnect the power supply and test the continuity.

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I have check model. Rs connected Gnd with1k pull down register are there.

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could you please connect the RS directly to the GND?

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I have Rs pin is connected directly GND. but problem has not resolved.

It could be a transceiver or module issue. Try another one.

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But both models are testing Led blinking, Uart transmission is correctly run.

I mean the transceiver or its module not the MCU board.

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