func main() {
flag.Parse()
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
controller, err := hd44780.NewI2C(
bus,
0x20,
hd44780.PCF8574PinMap,
hd44780.RowAddress20Col,
hd44780.TwoLine,
hd44780.BlinkOn,
)
if err != nil {
panic(err)
}
display := characterdisplay.New(controller, 20, 4)
defer display.Close()
display.Clear()
display.Message("Hello, world!\n@embd | characterdisplay")
time.Sleep(10 * time.Second)
display.BacklightOff()
}
func main() {
flag.Parse()
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
hd, err := hd44780.NewI2C(
bus,
0x20,
hd44780.PCF8574PinMap,
hd44780.RowAddress20Col,
hd44780.TwoLine,
hd44780.BlinkOn,
)
if err != nil {
panic(err)
}
defer hd.Close()
hd.Clear()
message := "Hello, world!"
bytes := []byte(message)
for _, b := range bytes {
hd.WriteChar(b)
}
hd.SetCursor(0, 1)
message = "@embd | hd44780"
bytes = []byte(message)
for _, b := range bytes {
hd.WriteChar(b)
}
time.Sleep(10 * time.Second)
hd.BacklightOff()
}