I2C Error - Remote I/O error (errno 121) with the demo pwm

Autonomous Machines Robotics - Isaac Isaac SDK
1

Hi：

I have deployed the demo /isaac/apps/samples/pwm on nano，but when I run it, an error occurred：
ERROR engine/gems/coms/i2c.cpp@106: I2C Error: Remote I/O error (errno 121)
I wander where is wrong, or how can I query the meaning of errno 121?

2

I have find the mistake: should attach to bus 0 (GPIO 27,GPIO 28)…
I still want to know how to query the meaning of errno xxx.

3

Hi lovenv, could you please provide some more info about what you did to solve this issue? What did you hook up to GPIO 27/28? Thanks.