func (p *PCD8544) init() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
// All pin direction are output
embd.SetDirection(p.PIN_SCLK, embd.Out)
embd.SetDirection(p.PIN_DIN, embd.Out)
embd.SetDirection(p.PIN_DC, embd.Out)
embd.SetDirection(p.PIN_CS, embd.Out)
embd.SetDirection(p.PIN_RST, embd.Out)
// Reset controller state
embd.DigitalWrite(p.PIN_RST, embd.High)
embd.DigitalWrite(p.PIN_CS, embd.High)
embd.DigitalWrite(p.PIN_RST, embd.Low)
// delay(100)
time.Sleep(100 * time.Millisecond)
embd.DigitalWrite(p.PIN_RST, embd.High)
// LCD parameters
p.send(LCD_CMD, 0x21) // extended instruction set control (H=1)
p.send(LCD_CMD, 0x13) // bias system (1:48)
p.send(LCD_CMD, 0xc2) // default Vop (3.06 + 66 * 0.06 = 7v)
p.Clear()
// Activate LCD
p.send(LCD_CMD, 0x08) // display blank
p.send(LCD_CMD, 0x0c) // normal mode (0x0d = inverse mode)
// delay(100)
time.Sleep(100 * time.Millisecond)
// Place the cursor at the origin
p.SetCursor(0, 0)
}
func (r *RPi) LedsCycle(repeat int) {
r.LedsOff()
for i := 0; i < repeat; i++ {
for _, l := range r.LEDs {
embd.DigitalWrite(l, embd.High)
time.Sleep(50 * time.Millisecond)
embd.DigitalWrite(l, embd.Low)
}
}
}
func shiftOut(dataPin uint8, clockPin uint8, bitOrder uint8, val uint8) {
var (
one uint8 = 1
seven uint8 = 7
)
for i := uint8(0); i < 8; i++ {
if bitOrder == LSBFIRST {
embd.DigitalWrite(dataPin, pre_shift(val&(one<<i)))
} else {
embd.DigitalWrite(dataPin, pre_shift(val&(one<<(seven-i))))
}
embd.DigitalWrite(clockPin, embd.High)
embd.DigitalWrite(clockPin, embd.Low)
}
}
func main() {
embd.InitGPIO()
defer embd.CloseGPIO()
embd.SetDirection(10, embd.Out)
embd.DigitalWrite(10, embd.High)
}
func (l *LightsController) Toggle_led_light(rw http.ResponseWriter, req *http.Request) {
flag.Parse()
embd.InitGPIO()
body, err := ioutil.ReadAll(req.Body)
var lig models.Light
if err != nil {
panic(err)
}
err = json.Unmarshal(body, &lig)
if err != nil {
panic(err)
}
fmt.Println(lig.Pin_number)
if lig.Status == true {
embd.SetDirection(lig.Pin_number, embd.Out)
embd.DigitalWrite(lig.Pin_number, embd.High)
b, err := json.Marshal(models.LightMessage{
Success: "True",
Message: "Switched On!!!",
})
if err != nil {
log.Fatal(err)
}
rw.Header().Set("Content-Type", "application/json")
rw.Write(b)
} else {
embd.SetDirection(lig.Pin_number, embd.Out)
embd.DigitalWrite(lig.Pin_number, embd.Low)
b, err := json.Marshal(models.LightMessage{
Success: "false",
Message: "Switched Off!!!",
})
if err != nil {
log.Fatal(err)
}
rw.Header().Set("Content-Type", "application/json")
rw.Write(b)
}
}
func main() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
if err := embd.SetDirection(10, embd.Out); err != nil {
panic(err)
}
if err := embd.DigitalWrite(10, embd.High); err != nil {
panic(err)
}
time.Sleep(1 * time.Second)
if err := embd.SetDirection(10, embd.In); err != nil {
panic(err)
}
}
func (r *RPi) LedsOff() {
for _, l := range r.LEDs {
embd.DigitalWrite(l, embd.Low)
}
}
func (r *RPi) LedsOn() {
for _, l := range r.LEDs {
embd.DigitalWrite(l, embd.High)
}
}
func (p *PCD8544) send(type_ uint8, data uint8) {
embd.DigitalWrite(p.PIN_DC, int(type_))
embd.DigitalWrite(p.PIN_CS, embd.Low)
shiftOut(p.PIN_DIN, p.PIN_SCLK, MSBFIRST, data)
embd.DigitalWrite(p.PIN_CS, embd.High)
}