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TranVinhPhuc

Problem with LCD 16x02_I2C_PCF8574 with CC3200 - Energia1.6.10E18

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Hello guys ! 
Im try to  using i2c communicate with module  LCD 16x02_I2C_PCF8574 but it not work !!!
Im using library : LiquidCrystal_I2C.h . but not work and i try porting library from Arduino to Engeria and it not work too.

maybe im using library same as this topic : 



Someone can help me solved this problem or share with me a library work :D ... many thanks ! 

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Are you using this library? https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library

It compiles OK for CC3200 and looking at the code, it should work.

  • Which module are you using exactly?
  • Can you post a link to the module page?
  • To which of the CC3200 pins do you have the module connected?

It could be that the logic on that board is 5volt only. If you supply the board with 5volt then you will damage the I2C lines of the CC3200 as they are 3.3 volt only. Not sure if the module you are using has pullups on the I2C lines or if they need to be provided externally. Posting a link to the module will help us determine that.

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