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.