topic Re: PCF8574 with I2C issue in Other NXP Products

PCF8574 with I2C issue

vanajagujjala — Mon, 13 Feb 2017 14:28:03 GMT

Hi ,

I am using PCF8574T I/O Expander along with Accelerometer and when i am trying to writing to the PCF8574 my I2C code hanging and also I am little bit confused with PCF8574 Input and output configuration, so please any one suggest or send me sample code for PCF8574 with I2C.

Thanks.

Re: PCF8574 with I2C issue

TomasVaverka — Tue, 21 Feb 2017 09:06:38 GMT

Hi Vanaja,

In order to better analyze where the problem might be, could you please send me a complete schematic? And if you have a logic analyzer, it would be also fine to see what is going on the I2C bus.

Best regards,

Tomas

Re: PCF8574 with I2C issue

vanajagujjala — Mon, 27 Feb 2017 12:06:34 GMT

Hi Thomas,

Thanks for the reply, and solved the problem

Re: PCF8574 with I2C issue

Transidico — Thu, 08 May 2025 12:47:55 GMT

hello,
do you still have the code you made?

I have the same problem, it would be very helpful.

Thanks!

Regards