func New(rs, enable, d0, d1, d2, d3 uint8) *LCD {
lcd := &LCD{
rs: rs,
enable: enable,
data: [...]uint8{d0, d1, d2, d3},
displayfunction: LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS,
displaymode: LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT,
}
rpi.PinMode(lcd.rs, rpi.OUTPUT)
rpi.PinMode(lcd.enable, rpi.OUTPUT)
lcd.Begin(16, 1)
return lcd
}
func (l *LCD) write4bits(v uint8) {
for i := uint8(0); i < 4; i++ {
b := (v>>i)&0x01 == 0x01
rpi.PinMode(l.data[i], rpi.OUTPUT)
rpi.DigitalWrite(l.data[i], b)
}
l.pulseEnable()
}