I2C Bus 1 Nano

Hello,

I am trying to connect Oled to I2C Bus 1. Jetson Nano is unable to see the Adafruit PiOLED on I2C Bus 1, however it is identifying it on I2C Bus 0.

Are there any changes required to settings so that I2C Bus 1 works correctly?

TIA

Hi, which I2C pins are you using? Is your nano A02 version?

Per this link https://www.jetsonhacks.com/nvidia-jetson-nano-j41-header-pinout/ When I use pin # 3& 5 it doesnt connect. However when I use pin 27 and 28 the PiOLED works perfectly.

Is there a way I can figure out if its a A02 version?

Can you see output waveform from pin 3 and 5 when device attached?

There is label or silkscreen on board indicating A02.

Yes it is a A02. Do I need to run any commands if its A02? Will share the output wave by today

Here is the command output when PiOLED is connected to pin3 and 5

sudo i2cdetect -y -r 1
[sudo] password for jetson:
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – -- – -- – -- – -- – -- – -- –
10: – -- – -- – -- – -- – -- – -- – -- – --
20: – -- – -- – -- – -- – -- – -- – -- – --
30: – -- – -- – -- – -- – -- – -- – -- – --
40: – -- – -- – -- – -- – -- – -- – -- – --
50: – -- – -- – -- – -- – -- – -- – -- – --
60: – -- – -- – -- – -- – -- – -- – -- – --
70: – -- – -- – -- – --

and second one when connected to Pin 27 and 28

sudo i2cdetect -y -r 0
[sudo] password for jetson:
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – -- – -- – -- – -- – -- – -- –
10: – -- – -- – -- – -- – -- – -- – -- – --
20: – -- – -- – -- – -- – -- – -- – -- – --
30: – -- – -- – -- – -- – -- – -- 3c – -- –
40: – -- – -- – -- – -- – -- – -- – -- – --
50: – -- – -- – -- – -- – -- – -- – -- – --
60: – -- – -- – -- – -- – -- – -- – -- – --
70: – -- – -- – -- – --

Hello,

Can someone help me here please? Did someone face this issue before?

What’s the waveform of it?

Dont have a Waveform Generator…

Attach the device and use i2cdetect command to probe if any wave output from pin 3 & 5.

Is that not same as what I posted above
sudo i2cdetect -y -r 1
[sudo] password for jetson:
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – -- – -- – -- – -- – -- – -- –
10: – -- – -- – -- – -- – -- – -- – -- – --
20: – -- – -- – -- – -- – -- – -- – -- – --
30: – -- – -- – -- – -- – -- – -- – -- – --
40: – -- – -- – -- – -- – -- – -- – -- – --
50: – -- – -- – -- – -- – -- – -- – -- – --
60: – -- – -- – -- – -- – -- – -- – -- – --
70: – -- – -- – -- – --

I mean you should use a oscilloscope to probe the pins to get the waveform…