usb8452 i2c signal out

[cntech]

I am trying to output an i2c signal.
Geneal i2c write.vi throws error in labview example.
The error code is 131744.

I checked the output signal with an oscilloscope.
But there is no signal.

There is no problem with the usb8452 module, but I am wondering how to check the output signal.

[santo_13]

Just the code does not seem to help in this case, please share the whole error message.

How are you testing? do you've a I2C device on the other end properly powered up and connected to 8452?

[cntech]

SDA and SCL lines must be connected to write Can I use it?

SDA, SLC, GND are all connected.

An error occurs when checking the output signal of SDA and SLC with an oscilloscope.

WRITE and READ were executed using two USB8452s, but an error occurs.

Tested the example program (General I2C Write.vi / General I2c Read.vi).

[crossrulz]

You need pull-ups between the voltage translators too.

[santo_13]

Are you using one of 8452 in master I2C mode and the other in slave I2C mode? the easiest option, get a simple I2C sensor breakout board like MPU6050 or some ADC that you use with Arduino for testing.

If both are in master, none can communicate.