Observe I2C traffic on Drive AGX Xavier

Autonomous Vehicles DRIVE AGX Xavier DRIVE AGX Xavier General
1

Please provide the following info (check/uncheck the boxes after creating this topic):
Software Version
DRIVE OS Linux 5.2.6
DRIVE OS Linux 5.2.6 and DriveWorks 4.0
DRIVE OS Linux 5.2.0
DRIVE OS Linux 5.2.0 and DriveWorks 3.5
NVIDIA DRIVE™ Software 10.0 (Linux)
NVIDIA DRIVE™ Software 9.0 (Linux)
other DRIVE OS version
other

Target Operating System
Linux
QNX
other

Hardware Platform
NVIDIA DRIVE™ AGX Xavier DevKit (E3550)
NVIDIA DRIVE™ AGX Pegasus DevKit (E3550)
other

SDK Manager Version
1.9.1.10844
other

Host Machine Version
native Ubuntu 18.04
other

Hello,

We would like to observe the I2C traffic on the Drive AGX Xavier,

Could you please let us know, how we can do it?

Best regards,
Roshan

2

Dear @roshan.shenoy,
May I know why you are looking for this? Could you share more details about your use case for better assistance.

3

Hi @SivaRamaKrishnaNV

The reason we want to look into the I2C traffic is because of the following error
Warning : CheckCSIPLLLock 3347: CSIPLL Unlocked 0x0
Module_id 30 Severity 2 : MAX96712: CDI_CONFIG_MAX96712_CHECK_CSIPLL_LOCK failed with NvMedia error 7

We went through one more post in the forum (shared below) and found the reason for the above error is that no valid streams are coming into the deserializer

Creating the custom driver SIPL: CDI_CONFIG_MAX96712_CHECK_CSIPLL_LOCK Error - DRIVE AGX Xavier / DRIVE AGX Xavier General - NVIDIA Developer Forums

We want to observe the I2C traffic in order to provide valid video streams into the deserializer,
for ex. we use wireshark to observe the network traffic,

Is there something similar we could use in our scenario?

Best regards,
Roshan

4

Could you please specify the particular I2C device for which you intend to monitor the traffic? Additionally, do you find i2cdump a practical solution for your needs?

7

We would like to monitor both the serializer (8 bit address: 0xc4) and the deserializer (8 bit address: 0x52)
Could you please point to on how i2cdump be done when the Camera is connected to the AGX