danhans42

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• HD44780 Problems

  @danhans42 started

  • 10 comments
  • 4,775 views

  @Gordon replied
• HD44780 Problems

  in Interfacing • 9 years, 11 months

  

  Hi Gordon,

  Yes it displays a solid bar on one line on a 2 line display. Its definitely hooked up to the +5v on the STM32F4 board and RW is connected to ground.

  I have tried other pin combinations already with no success at all. All that seems to happen is the solid bar of pixels dims ever so slightly when the code has been run which happens whatever pins I choose.

  Ill double check everything again.

  Thanks for your help.

  Regards

  Dan

• HD44780 Problems

  in Interfacing • 9 years, 11 months

  

  Hi,

  I used Espruino a while ago and had both mt STMVL and STM32F4 boards happily driving a 16x2 LCD display in 4 bit mode.

  I have since updated to the latest version and started to use the WebIDE. No matter what I try I cannot get any output on the LCD.

  I have tried different pin combinations and even different LCD modules. The LCD modules work fine on my Raspberry Pi but for the life of me I cannot get them to work as set out in the examples..

  var lcd = require("HD44780").connect(A0,A1,C0,C1,C­2,C3);
  lcd.print("Hello World");
  

  Can anyone shed any light?

  Cheers

  Dan