SPC560P50L5 CAN Module doesn't work successfully

[Louie33]

Hello everyone.
Because I need to test a newly purchased SPC560-DISP, I tested several commonly used modules

And these is my test devices:

Devices Used:

• MCU: SPC560P-DISP
• CAN: Kvaser Leaf LightV2

I conducted tests on several commonly used modules:

1. PIT
2. EIRQ
3. PWM
4. ADC

The test results for the above modules showed no issues. However, when testing the data transmission functionality of the CAN module:

1. Loaded my own test program onto the development board.
2. Kvaser and BUSMASTER were successfully connected.

Yet, I couldn't observe any data in BUSMASTER.

So, I replaced the SPC560P-DISP with another board of the same model that I had already and repeated the same steps in the same environment. Sadly, I could observe the values I intended to transmit in BUSMASTER.

What settings might I have overlooked that could cause this abnormal behavior? Or could the development board might be damaged?

Thanks

Louie

[Louie33]

Today, I tried using an oscilloscope to measure the CANH waveform.

Below are the oscilloscope waveforms from the SPC560P-DISP I already had:

The waveform generate normally.

Next, I test the newly purchased SPC560P-DISP:

Then no waveform was generated on CANH.

[SofLit · Accepted solution]

Hello @Louie33 ,

I'm not expert of Automotive MCUs, but:

1- check if JP10 is fitted to enable the 120 ohm terminating resistor.

2- Check also the position of JP22 and JP23 and if they are in the correct position.

Compare them to what you have on the old board.

[Louie33]

Thank you. I previously not consider this is a hardware-related issue. After checking JP22 and JP23, I discovered that their positions were both set to the pins for CAN channel 1, which caused data transmission on CAN channel 0 to fail.