Hi,
I am running the AM335x CAN interface and using an Arduino with a Seeed Studio CAN shield as the receiver. When doing this and watching the output with a scope, the amplitude of the AM335x is far less than the Arduino output. There is a resistor on the AM335x board and an external one on the Seeed Studio board. I have run this with and without the resistor on the Seed Studio end with just a slight difference in the amplitudes of both but still the same relative size differences of the waveforms.
This shows the output on the scope the AM335x output is only 1.52 volts while the Seeed board is 3.3V. Is there something wrong here ? I noticed this when I tried to use the Tek CAN decode module on the data. I cannot have the same threshhold for both signals. The are both received fine and decode fine but I was worried about the amplitude difference.
--jim schimpf
