1. chandu13

    Thread Starter Member

    Oct 15, 2008
    22
    0
    Hay
    I need help
    I have interfaced 6 toggle switches with LPC2114 (In built I2C) using PCF8574A PORT expander by connecting SDA, SCL pins. I completed hard ware part but I am facing problem with software. I Read LPC2114 data sheet but I am unable to understand the concept of How to write the program using I2C Registers.

    Please help me how to write program to communicate LPC2114 I2C with PCF8574A PORT expander
    Thank you

    Regards
    Chandu