5 Replies Latest reply on Dec 24, 2018 11:14 PM by RyanZ_36

    Multiple I2C slaves (RTC & LCD) on CY8Ckit-059

    sujoybha_3178756

      I have a DS1307 RTC connected to I2C and an PC8574 connected to a 16x02 LCD connected to the same I2C lines in parallel.

       

      The issue is that each of the devices work in isolation but when I try to use both, they don't work. I am using the CharLCD by Michael Bey CharLCD_I2C Component interface for PCF8574AT / HD44780  Combo .

       

      The program is attached for your reference. Any advice is much appreciated.

       

      PS: There are 2 no's of 4.7k pull-up resistors on the DS1307 component.