Problem with SMBus communication

Hi, I've been trying for a few days to communicate with a device by SMBus.

The device is an Microchip USB2422 and for test I use board DISC1 with STM32F429 on i2c3 port.

The problem is that when I try to communicate with it to oscilloscope I see only a single signal with 10ms duration on both SCL and SDA.

Then I tried with another device (INA219) and that works on I2C and SMBus.

With I2C I can work with it without any problem, but with SMBus (with same connection) I've the same problem of USB2422.

Is there something I'm missing?

Thanks.

This topic has been closed for replies.

Sign up