Some fixes.

api/modem/at/at.go

@@ -83,13 +83,13 @@ func (p *atPort) IsConnected() bool {
 // Low level write/read function
 func (p *atPort) makeReq(msg string) (string, error) {
 	// Write
-	p.port.ResetInputBuffer()
 	if _, err := p.port.Write([]byte(msg)); err != nil {
 		return "", fmt.Errorf("serial port write: %w", err)
 	}
+	time.Sleep(time.Millisecond)
 	// Read
 	readLen, err := p.port.Read(p.inputBuf)
-	p.logger.Println(msg, "RAWREAD:", string(p.inputBuf[:readLen]))
+	// p.logger.Println(msg, "\x1b[38;2;150;150;150mRAWREAD:", string(p.inputBuf[:readLen]), "\x1b[38;2;255;255;255m")
 	if err != nil {
 		return "", fmt.Errorf("port read: %w", err)
 	}

api/modem/gpio.go

@@ -8,7 +8,7 @@ import (
 )
 
 type gpioPin struct {
-	logger *log.Logger
+	Logger *log.Logger
 	Pin    gpio.Pin
 }
 
@@ -18,22 +18,22 @@ func (p gpioPin) Init() error {
 
 func (p gpioPin) sendOnOffSignal() {
 	p.Pin.Output()
-	p.logger.Println("Power on 0/3 + 100ms")
+	p.Logger.Println("Power on 0/3 + 100ms")
 	p.Pin.Low()
 	p.Pin.Toggle()
 	time.Sleep(100 * time.Millisecond)
 
-	p.logger.Println("Power on 1/3 + 3s")
+	p.Logger.Println("Power on 1/3 + 3s")
 	p.Pin.High()
 	p.Pin.Toggle()
 	time.Sleep(3 * time.Second)
 
-	p.logger.Println("Power on 2/3 + 30s")
+	p.Logger.Println("Power on 2/3 + 30s")
 	p.Pin.Low()
 	p.Pin.Toggle()
 	time.Sleep(30 * time.Second)
 
-	p.logger.Println("Power on 3/3")
+	p.Logger.Println("Power on 3/3")
 }
 
 func (p gpioPin) PowerOn() {

api/modem/gps.go

@@ -50,8 +50,10 @@ func (gps *GpsInfo) decode(str string) error {
 	if err != nil {
 		return fmt.Errorf("parse longitude: %w", err)
 	}
+	newGpsInfo.Latitude /= 100
+	newGpsInfo.Longitude /= 100
 	newGpsInfo.LatitudeIndicator = strs[1]
-	newGpsInfo.LatitudeIndicator = strs[3]
+	newGpsInfo.LongitudeIndicator = strs[3]
 	newGpsInfo.Date = strs[4]
 	newGpsInfo.Time = strs[5]
 	newGpsInfo.Altitude, err = strconv.ParseFloat(strs[6], 64)

api/modem/modem.go

@@ -43,6 +43,8 @@ type Modem interface {
 	// CalculateSpeed(newLatitude, newlongitude float64)
 	Update() error
 	GetInfo() (string, error)
+	GetShortInfo() string
+	SaveGPS(path string) error
 	TestGPS() error
 }
 
@@ -50,18 +52,18 @@ func New(logger *log.Logger) Modem {
 	return &modem{
 		logger:         logger,
 		baudrate:       115200,
-		onOffPin:       gpioPin{Pin: 6},
+		onOffPin:       gpioPin{Logger: logger, Pin: 6},
 		lastUpdateTime: time.Now(),
 	}
 }
 
 func (m *modem) Init() error {
 	// Turn module on
-	// log.Println("=============================== Turn on module")
+	log.Println("=============================== Turn on module")
-	// if err := m.onOffPin.Init(); err != nil {
+	if err := m.onOffPin.Init(); err != nil {
-	// 	return fmt.Errorf("gpio pin init: %w", err)
+		return fmt.Errorf("gpio pin init: %w", err)
-	// }
+	}
-	// onOffPin.PowerOn()
+	// m.onOffPin.PowerOn()
 
 	// Search
 	m.logger.Println("=============================== Search")
@@ -214,6 +216,21 @@ func (m *modem) SaveGPS(path string) error {
 	}
 	return nil
 }
+func (m *modem) testConsole() {
+	for {
+		var inStr string
+		fmt.Scanln(&inStr)
+		if inStr == "exit" {
+			return
+		}
+		resp, err := m.port.Send(inStr)
+		if err != nil {
+			m.logger.Println("ERROR:", err.Error())
+		}
+		log.Println(resp)
+		log.Println("------------------")
+	}
+}
 
 func (m *modem) checkPort(portName string) (outErr error) {
 	defer func() {
@@ -235,16 +252,25 @@ func (m *modem) checkPort(portName string) (outErr error) {
 	}
 	defer m.port.Disconnect() // Do not bother about errors...
 
+	// Reset input
+	if err := m.port.GetSerialPort().ResetInputBuffer(); err != nil {
+		return fmt.Errorf("reset input buffer: %w", err)
+	}
+	// Reset output
+	if err := m.port.GetSerialPort().ResetOutputBuffer(); err != nil {
+		return fmt.Errorf("reset output buffer: %w", err)
+	}
+	m.port.Send("ATE0") // This shit sometimes enables echo mode... why... when... but it can
+
 	// Ping
 	m.logger.Println("Ping...")
-
 	if err := m.ping(); err != nil {
 		return fmt.Errorf("ping error: %w", err)
 	}
+	m.logger.Println("\x1b[38;2;0;255;0mOK\x1b[38;2;255;255;255m")
 
 	// Check model
 	m.logger.Println("Check model...")
-
 	resp, err := m.port.Send("AT+CGMM")
 	if err != nil {
 		return fmt.Errorf("get model: %w", err)
@@ -261,7 +287,7 @@ func (m *modem) checkPort(portName string) (outErr error) {
 	if model[:len(rightModel)] != rightModel {
 		return fmt.Errorf("invalid modem model: %s", model)
 	}
-	m.logger.Println("Model right")
+	m.logger.Println("\x1b[38;2;0;255;0mOK\x1b[38;2;255;255;255m")
 	return nil
 }
 
@@ -282,7 +308,7 @@ SearchLoop:
 		m.logger.Printf("Checking port %s ...\n", p)
 
 		if err := m.checkPort("/dev/" + p); err != nil {
-			m.logger.Printf("Check failed: %s\n", err.Error())
+			m.logger.Printf("\x1b[38;2;255;0;0mCheck failed: %s\x1b[38;2;255;255;255m\n", err.Error())
 			continue SearchLoop
 		}
 
@@ -306,10 +332,14 @@ func (m *modem) ping() error {
 
 func (m *modem) switchToGpsMode() error {
 	m.logger.Println("Enabling GPS mode...")
-	// Reset intput
+	// Reset input
 	if err := m.port.GetSerialPort().ResetInputBuffer(); err != nil {
 		return fmt.Errorf("reset input buffer: %w", err)
 	}
+	// Reset output
+	if err := m.port.GetSerialPort().ResetOutputBuffer(); err != nil {
+		return fmt.Errorf("reset output buffer: %w", err)
+	}
 
 	// Check gps mode status
 	resp, err := m.port.Send("AT+CGPS?")

docker-compose.yml

@@ -14,4 +14,4 @@ services:
     devices:
       - /dev/i2c-1
       - /dev/ttyS0
-    restart: unless-stopped
+    restart: unless-stopped

main.go

@@ -17,9 +17,18 @@ func main() {
 
 func mainE() error {
 	m := modem.New(log.New(os.Stdout, "modem:", log.LstdFlags))
+	log.Println("||||||||||||||||| INIT |||||||||||||||")
 	if err := m.Init(); err != nil {
 		return err
 	}
+	log.Println("||||||||||||||||| GET INFO |||||||||||||||||")
+	if info, err := m.GetInfo(); err != nil {
+		return err
+	} else {
+		log.Println(info)
+	}
+	log.Println("||||||||||||||||| GET SHORT INFO ||||||||||||||||")
+	log.Println(m.GetShortInfo())
 	return nil
 	// ports, err := serial.GetPortsList()
 	// if err != nil {