lcd

rpi-lcd

Description

Golang library for accessing I2C LCD screen connected to the RaspberryPi.

Tested LCDs:

• Geekcreit® IIC/I2C 1602 Yellow Green Backlight LCD Display Module For Arduino
• Geekcreit® IIC I2C 2004 204 20 x 4 Character LCD Display Screen Module Blue For Arduino

Installation

go get github.com/mskrha/rpi-lcd

Usage

package main

import (
	"fmt"
	"time"

	"github.com/mskrha/rpi-lcd"
)

func main() {
	l := lcd.New(lcd.LCD{Bus: "/dev/i2c-1", Address: 0x27, Rows: 2, Cols: 16, Backlight: true})

	if err := l.Init(); err != nil {
		panic(err)
	}

	for {
		if err := l.Print(1, 0, time.Now().Format("02.01.")); err != nil {
			fmt.Println(err)
			return
		}
		if err := l.Print(1, 8, time.Now().Format("15:04:05")); err != nil {
			fmt.Println(err)
			return
		}
		time.Sleep(time.Second)
	}
}

Notes

Inspired by the Adafruit Liquid Crystal library.