Add: check in RmFront

.gitignore

@@ -1,5 +1,4 @@
 out/
-Makefile
 go.sum
 .git/
 *.swp

Dockerfile

@@ -4,6 +4,11 @@ WORKDIR /app
 COPY ./ ./
 RUN go mod download
 
+RUN apt-get update
+RUN apt-get install -y iputils-ping
+RUN apt-get install -y ppp
+RUN apt-get install -y net-tools
+
 
 RUN CGO_ENABLED=0 GOOS=linux go build -o /modem-test
 

Makefile

@@ -0,0 +1,7 @@
+export GOOS=linux
+export GOARCH=arm
+export GOARM=6
+export CGO_ENABLED=0
+
+build:
+	@go build -o out/modem main.go

api/modem/at/at.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"io"
 	"log"
+	"sync"
 	"time"
 
 	"go.bug.st/serial"
@@ -12,12 +13,14 @@ import (
 // Some constants
 const (
 	ReadTimeout  = time.Second
-	InputBufSize = 128
+	InputBufSize = 512
 )
 
 type atPort struct {
 	logger *log.Logger
 
+	mutex sync.Mutex // Mutex for all operation with serial port
+
 	baudrate int
 	portName string
 	port     serial.Port
@@ -26,12 +29,15 @@ type atPort struct {
 
 type Port interface {
 	GetName() string
-	GetSerialPort() serial.Port // For extra need
+	GetBaudrate() int
+	SerialPort() serial.Port // For extra need
+	Mutex() sync.Locker      // retruns pointer to mutex for advanced use like readign NMEA reports
 
 	Connect() error
 	Disconnect() error
 	IsConnected() bool
 
+	RawSend(msg string) (string, error)
 	Send(cmd string) (Resp, error)
 
 	io.Closer
@@ -50,11 +56,22 @@ func (p *atPort) GetName() string {
 	return p.portName
 }
 
-func (p *atPort) GetSerialPort() serial.Port {
+func (p *atPort) GetBaudrate() int {
+	return p.baudrate
+}
+
+func (p *atPort) SerialPort() serial.Port {
 	return p.port
 }
 
+func (p *atPort) Mutex() sync.Locker {
+	return &p.mutex
+}
+
 func (p *atPort) Connect() error {
+	p.mutex.Lock()
+	defer p.mutex.Unlock()
+
 	p.logger.Println("Connecting to", p.portName, "...")
 	s, err := serial.Open(p.portName, &serial.Mode{BaudRate: p.baudrate})
 	if err != nil {
@@ -70,8 +87,10 @@ func (p *atPort) Connect() error {
 }
 
 func (p *atPort) Disconnect() error {
+	p.mutex.Lock()
 	defer func() {
 		p.port = nil
+		p.mutex.Unlock()
 	}()
 	if err := p.port.Close(); err != nil {
 		return fmt.Errorf("close port: %w", err)
@@ -80,19 +99,25 @@ func (p *atPort) Disconnect() error {
 }
 
 func (p *atPort) IsConnected() bool {
+	p.mutex.Lock()
+	defer p.mutex.Unlock()
+
 	return p.port != nil
 }
 
 // Low level write/read function
-func (p *atPort) makeReq(msg string) (string, error) {
+func (p *atPort) RawSend(msg string) (string, error) {
+	p.mutex.Lock()
+	defer p.mutex.Unlock()
+
 	// 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)
 	}
@@ -102,12 +127,12 @@ func (p *atPort) makeReq(msg string) (string, error) {
 
 func (p *atPort) Send(cmd string) (Resp, error) {
 	cmd += "\r\n"
-	rawResp, err := p.makeReq(cmd)
+	rawResp, err := p.RawSend(cmd)
 	if err != nil {
 		return RespNil, fmt.Errorf("make request: %w", err)
 	}
 	if len(rawResp) <= 4 {
-		return RespNil, fmt.Errorf("read too small msg: %d byte", len(rawResp))
+		return RespNil, fmt.Errorf("read too small msg: %d byte - %s", len(rawResp), string(rawResp))
 	}
 	resp := rawResp[2 : len(rawResp)-2] // Cut \r\n
 
@@ -115,5 +140,8 @@ func (p *atPort) Send(cmd string) (Resp, error) {
 }
 
 func (p *atPort) Close() error {
+	p.mutex.Lock()
+	defer p.mutex.Unlock()
+
 	return p.port.Close()
 }

api/modem/at/response.go

@@ -9,9 +9,16 @@ func (resp Resp) Check() bool {
 }
 
 func (resp Resp) RmFront(str string) Resp {
+	if !resp.Check() {
+		return RespNil
+	}
 	return Resp(string(resp)[len(str):])
 }
 
 func (resp Resp) String() string {
 	return string(resp)
 }
+
+func (resp Resp) Bytes() []byte {
+	return []byte(resp)
+}

api/modem/gpio/gpio.go

@@ -1,6 +1,7 @@
-package modem
+package gpio
 
 import (
+	"io"
 	"log"
 	"time"
 
@@ -9,7 +10,21 @@ import (
 
 type gpioPin struct {
 	logger *log.Logger
-	Pin    gpio.Pin
+	pin    gpio.Pin
+}
+
+type Pin interface {
+	Init() error
+	PowerOn()
+	PowerOff()
+	io.Closer
+}
+
+func New(logger *log.Logger, pin uint8) Pin {
+	return gpioPin{
+		logger: logger,
+		pin:    gpio.Pin(pin),
+	}
 }
 
 func (p gpioPin) Init() error {
@@ -17,20 +32,20 @@ func (p gpioPin) Init() error {
 }
 
 func (p gpioPin) sendOnOffSignal() {
-	p.Pin.Output()
+	p.pin.Output()
 	p.logger.Println("Power on 0/3 + 100ms")
-	p.Pin.Low()
-	p.Pin.Toggle()
+	p.pin.Low()
+	p.pin.Toggle()
 	time.Sleep(100 * time.Millisecond)
 
 	p.logger.Println("Power on 1/3 + 3s")
-	p.Pin.High()
-	p.Pin.Toggle()
+	p.pin.High()
+	p.pin.Toggle()
 	time.Sleep(3 * time.Second)
 
 	p.logger.Println("Power on 2/3 + 30s")
-	p.Pin.Low()
-	p.Pin.Toggle()
+	p.pin.Low()
+	p.pin.Toggle()
 	time.Sleep(30 * time.Second)
 
 	p.logger.Println("Power on 3/3")
@@ -40,10 +55,10 @@ func (p gpioPin) PowerOn() {
 	p.sendOnOffSignal()
 }
 
-func (p *gpioPin) PowerOff() {
+func (p gpioPin) PowerOff() {
 	p.sendOnOffSignal()
 }
 
-func (p *gpioPin) Close() error {
+func (p gpioPin) Close() error {
 	return gpio.Close()
 }

api/modem/gps/data.go

@@ -1,14 +1,16 @@
-package modem
+package gps
 
 import (
 	"fmt"
+	"io"
+	"log"
 	"math"
 	"strconv"
 	"strings"
 	"time"
 )
 
-type GpsData struct {
+type Data struct {
 	Latitude           float64 `json:"Latitude"`
 	Longitude          float64 `json:"Longitude"`
 	LatitudeIndicator  string  `json:"Latitude_indicator"`  // North/South
@@ -20,13 +22,13 @@ type GpsData struct {
 	Time               string  `json:"-"`
 }
 
-var GpsInfoNil = GpsData{}
+var GpsInfoNil = Data{}
 
 func deg2rad(deg float64) float64 {
 	return deg * (math.Pi / 180)
 }
 
-func (gps *GpsData) calculateSpeed(newLatitude, newLongitude float64, lastUpdateTime time.Time) {
+func (gps *Data) CalculateSpeed(newLatitude, newLongitude float64, lastUpdateTime time.Time) {
 	earthRad := 6371.0 // TODO ?
 	dLat := deg2rad(math.Abs(newLatitude - gps.Latitude))
 	dLon := deg2rad(math.Abs(newLongitude - gps.Longitude))
@@ -37,36 +39,45 @@ func (gps *GpsData) calculateSpeed(newLatitude, newLongitude float64, lastUpdate
 	gps.Speed = earthRad * c / (math.Abs(float64(time.Since(lastUpdateTime))))
 }
 
-func (gps *GpsData) decode(str string) error {
-	var err error
-	newGpsInfo := GpsData{}
-	strs := strings.Split(strings.Split(strings.Replace(str, " ", "", -1), "\n")[0], ",")
+// To remove warning
 
+// Parse string from AT command that contains gps data
+func (gps *Data) decode(str string) error {
+	var err error
+	newGpsInfo := Data{}
+	strs := strings.Split(strings.Split(strings.Replace(str, " ", "", -1), "\n")[0], ",")
+	logger := log.New(io.Discard, "modem-gps", log.LstdFlags)
+
+	if len(strs) < 7 {
+		return fmt.Errorf("ERROR: too small msg: %s", strs)
+	}
 	newGpsInfo.Latitude, err = strconv.ParseFloat(strs[0], 64)
 	if err != nil {
-		return fmt.Errorf("parse latitude: %w", err)
+		logger.Println("ERROR parse latitude:", err.Error())
 	}
 	newGpsInfo.Longitude, err = strconv.ParseFloat(strs[2], 64)
 	if err != nil {
-		return fmt.Errorf("parse longitude: %w", err)
+		logger.Println("ERROR parse longitude:", err.Error())
 	}
+	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)
 	if err != nil {
-		return fmt.Errorf("parse altitude: %w", err)
+		logger.Println("ERROR parse altitude:", err.Error())
 	}
 	newGpsInfo.Speed, err = strconv.ParseFloat(strs[7], 64)
 	if err != nil {
-		return fmt.Errorf("parse speed: %w", err)
+		logger.Println("ERROR parse speed:", err.Error())
 	}
 	// Course sometimes may be null
 	if len(strs[8]) > 0 {
 		newGpsInfo.Course, err = strconv.ParseFloat(strs[8], 64)
 		if err != nil {
-			return fmt.Errorf("parse course: %w", err)
+			logger.Println("ERROR parse course:", err.Error())
 		}
 	}
 	*gps = newGpsInfo

api/modem/gps/gps.go

@@ -0,0 +1,106 @@
+package gps
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"strings"
+
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem/at"
+)
+
+type gps struct {
+	logger *log.Logger
+	port   at.Port
+	data   Data
+}
+
+type Gps interface {
+	Init() error
+	Update() error
+
+	GetData() Data
+	GetStatus() (Status, error)
+
+	io.Closer
+}
+
+func New(logger *log.Logger, port at.Port) Gps {
+	return &gps{
+		logger: logger,
+		port:   port,
+	}
+}
+
+func (g *gps) Init() error {
+	if !g.port.IsConnected() {
+		return fmt.Errorf("at port is not connected")
+	}
+	return nil
+}
+
+func (g *gps) Update() error {
+	if err := g.switchGpsMode(true); err != nil {
+		return fmt.Errorf("try to GPS mode: %w", err)
+	}
+	defer g.switchGpsMode(false)
+
+	resp, err := g.port.Send("AT+CGPSINFO")
+	if err != nil {
+		return fmt.Errorf("receive GPS data: %w", err)
+	}
+	if !resp.Check() {
+		return fmt.Errorf("get GPS info: error response: %s", resp)
+	}
+	if err := g.data.decode(strings.Split(strings.Replace(resp.RmFront("+CGPSINFO:").String(), "\r", "", -1), "\n")[0]); err != nil {
+		g.logger.Printf("error decode: %s\n", err.Error())
+	}
+	return nil
+}
+
+func (g *gps) GetData() Data {
+	return g.data
+}
+
+func (g *gps) Close() error {
+	return nil
+}
+
+func (g *gps) switchGpsMode(on bool) error {
+	onStr := "0"
+	if on {
+		onStr = "1"
+	}
+
+	// Reset input
+	if err := g.port.SerialPort().ResetInputBuffer(); err != nil {
+		return fmt.Errorf("reset input buffer: %w", err)
+	}
+	// Reset output
+	if err := g.port.SerialPort().ResetOutputBuffer(); err != nil {
+		return fmt.Errorf("reset output buffer: %w", err)
+	}
+
+	// Check gps mode status
+	resp, err := g.port.Send("AT+CGPS?")
+	if err != nil {
+		return fmt.Errorf("make at ask: %w", err)
+	}
+	if !resp.Check() {
+		return fmt.Errorf("get GPS mode: error response: %s", resp)
+	}
+	ans := strings.Replace(strings.Split(strings.Split(resp.RmFront("+CGPS:").String(), "\n")[0], ",")[0], " ", "", -1)
+	if ans == onStr {
+		return nil
+	}
+
+	// Modem is not in GPS mode
+	resp, err = g.port.Send("AT+CGPS=" + onStr)
+	if err != nil {
+		return fmt.Errorf("set GPS mode: %w", err)
+	}
+	if !resp.Check() {
+		return fmt.Errorf("set GPS mode: error response: %s", resp)
+	}
+	return nil
+}

api/modem/gps/nmea.go

@@ -0,0 +1,149 @@
+package gps
+
+import (
+	"fmt"
+	"log"
+	"strings"
+	"time"
+)
+
+type nmeaFlags int
+
+const (
+	gga     nmeaFlags = 1 << iota // global positioning systemfix data
+	rmc                           // recommended minimumspecific	GPS/TRANSIT data
+	gpgsv                         // GPS satellites in view
+	gpgsa                         // GPS DOP and active satellites
+	vtg                           // track made good and ground speed
+	xfi                           // Global Positioning SystemExtended FixData.)Bit 6 – GLGSV (GLONASS satellites in view GLONASSfixesonly
+	glgsa                         // 1. GPS/2. Glonass/3. GALILE DOPandActiveSatellites.
+	gns                           // fix data for GNSS receivers; output for GPS, GLONASS, GALILEO
+	_                             // Reserved
+	gagsv                         // GALILEO satellites in view
+	_                             // Reserved
+	_                             // Reserved
+	_                             // Reserved
+	_                             // Reserved
+	_                             // Reserved
+	bdpqgsa                       // BEIDOU/QZSS DOP and activesatellites
+	bdpqgsv                       // BEIDOUQZSS satellites in view
+
+	nmeaFlagsMask = (1 << 18) - 1
+
+	collectTimeout = 1 * time.Second
+)
+
+func secondCountDownTimer(title string, logger *log.Logger, t time.Duration) {
+	counter := 0
+	for {
+		if counter > int(t.Seconds()) {
+			break
+		}
+		logger.Printf("%s: %d/%f\n", title, counter, t.Seconds())
+		time.Sleep(time.Second)
+		counter += 1
+	}
+}
+
+// Go... otherwise will throw warning
+var nmeaFlagsAll = gga | rmc | gpgsv | gpgsa | vtg | xfi | glgsa | gns | gagsv | bdpqgsa | bdpqgsv
+
+func (g *gps) rawCollect(flags nmeaFlags) (string, error) {
+	// Need to omplement low level write/read here because collect must be atomic operation
+	// If other command is executed(write/read) it will read a part of nmea report and cause an error
+
+	// Setup gps
+
+	// Set output rate to 10Hz
+	if resp, err := g.port.Send("AT+CGPSNMEARATE=1"); err != nil {
+		return "", fmt.Errorf("AT+CGPSNMEARATE= request: %w", err)
+	} else {
+		if !resp.Check() {
+			return "", fmt.Errorf("set output rate: error response: %s", resp)
+		}
+	}
+
+	g.switchGpsMode(true)
+	g.port.Mutex().Lock()
+	s := g.port.SerialPort()
+	defer func() {
+		g.port.Mutex().Unlock()
+		g.switchGpsMode(false)
+	}()
+
+	// Send AT+CGPSINFOCFG=255, flags
+	flags &= nmeaFlagsMask
+	if _, err := s.Write([]byte("AT+CGPSINFOCFG=1,31\r\n")); err != nil {
+		return "", fmt.Errorf("serial port write 1: %w", err)
+	}
+	// Do I need to read answer
+
+	// Wait
+	secondCountDownTimer("Collecting NMEA data", g.logger, collectTimeout)
+
+	// Send AT+CGPSINFOCFG=0, flags
+	if _, err := s.Write([]byte("AT+CGPSINFOCFG=0,31\r\n")); err != nil {
+		return "", fmt.Errorf("serial port write 2: %w", err)
+	}
+	if _, err := s.Write([]byte("AT+CGPSFTM=0\r\n")); err != nil { // For sure because sometimes it cannot stop...
+		return "", fmt.Errorf("serial port write 2: %w", err)
+	}
+
+	time.Sleep(100 * time.Millisecond) // To enshure
+
+	// Read
+	outBuf := make([]byte, 0)
+	buf := make([]byte, 128)
+
+readLoop:
+	for {
+		n, err := s.Read(buf)
+		if err != nil {
+			return string(outBuf), fmt.Errorf("serial port read: %w", err)
+		}
+		if n == 0 {
+			break readLoop
+		}
+		outBuf = append(outBuf, buf[:n]...)
+	}
+
+	return string(outBuf), nil
+}
+
+func (g *gps) collectNmeaReports(flags nmeaFlags) ([]string, error) {
+	// Raw collect
+	resp, err := g.rawCollect(flags)
+	if err != nil {
+		return nil, fmt.Errorf("raw collect: %w", err)
+	}
+
+	// DEBUG
+	// g.logger.Println("NMEA raw collect:", resp)
+
+	// Right responce struct:
+	// \r\n
+	// OK
+	// \r\n
+	// (NMEA sentence)...
+	// \r\n
+	// OK
+	// \r\n
+	strs := strings.Split(strings.Replace(resp, "\r", "", -1), "\n")
+
+	// Check
+	// Now wait for:
+	// OK
+	// (NMEA sentence)...
+	// OK
+	// if len(strs) < 2 {
+	// 	return nil, fmt.Errorf("responce too few rows: %d", len(strs))
+	// }
+	// if !(strs[0] == "OK" && strs[len(strs)-1] == "OK") {
+	// 	return nil, fmt.Errorf("not OK responce: [%  s]", strs)
+	// }
+
+	// This... response is not stable
+	// Every time it gives one or two OK and in ramdom order
+	// So I will not check gor it
+	return strs, nil
+}

api/modem/gps/status.go

@@ -0,0 +1,151 @@
+package gps
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type Status struct {
+	GotResponses         bool    `json:"gotResponses"`
+	IsValidData          bool    `json:"isValidData"`
+	FoundSatelitesCount  int     `json:"foundSatelitesCount"`
+	ActiveSatelitesCount int     `json:"activeSatelitesCount"`
+	Rms                  float32 `json:"rms"` // Root mean square
+}
+
+var StatusNil = Status{
+	GotResponses:         false,
+	IsValidData:          false,
+	FoundSatelitesCount:  0,
+	ActiveSatelitesCount: 0,
+	Rms:                  0,
+}
+
+func (g *gps) GetStatus() (Status, error) {
+	// Provides more information about signal and possible problems using NMEA reports
+
+	// Collect reports
+	reports, err := g.collectNmeaReports(nmeaFlagsAll) // Now minimum
+	if err != nil {
+		return StatusNil, fmt.Errorf("collect nmea reports: %w", err)
+	}
+
+	// Annalise
+	st := Status{}
+
+checkLoop:
+	for _, s := range reports {
+		// Check for NMEA format
+		if len(s) < 1 || s[0] != '$' {
+			continue checkLoop
+		}
+		st.GotResponses = true
+
+		g.logger.Println("NMEA check:", s)
+		values := strings.Split(s, ",")
+		if len(values[0]) != 6 {
+			return StatusNil, fmt.Errorf("nmea invalid sentence: %s", s)
+		}
+		switch values[0][3:] { // Switch by content
+		case "GSV": // Any satelites
+			g.logger.Println("check GSV")
+			// Check len
+			if len(values) < 17 {
+				g.logger.Println("GSV too small values")
+				continue checkLoop
+			}
+
+			// Decode
+			// 0 - msg type
+			// 1 - number of msgs
+			// 2 - index of this msg
+			// 3 - number of visible satelites
+			// 4: - other data
+
+			// Msg index
+			index, err := strconv.Atoi(values[3])
+			if err != nil {
+				g.logger.Println("GSV too small values")
+				continue checkLoop
+			}
+			_ = index
+			// if index != 0 {
+			// 	g.logger.Println("discard not first GSV msg")
+			// 	continue checkLoop
+			// }
+
+			// Count
+			satCount, err := strconv.Atoi(values[4])
+			if err != nil {
+				g.logger.Println("GSV too small values")
+				continue checkLoop
+			}
+			st.FoundSatelitesCount = satCount
+		case "GSA": // Active satelites
+			g.logger.Println("check GSA")
+
+			// Check len
+			if len(values) < 17 {
+				g.logger.Println("GSV too small values")
+				continue checkLoop
+			}
+
+			// Decode
+			// 0 - msg type
+			// 1 - mode of selecting format
+			// 2 - mode of selected format
+			// 3:15 - IDs of active satelites
+			// 15: - other data
+
+			// Counting active satelites
+			count := 0
+			for _, v := range values[3:15] {
+				if _, err := strconv.Atoi(v); err == nil {
+					count += 1
+				}
+			}
+			st.ActiveSatelitesCount = max(st.ActiveSatelitesCount, count)
+		case "RMC": // Minimum GPS data
+			g.logger.Println("check RMC")
+			// Check len
+			if len(values) < 12 {
+				g.logger.Println("RMC too small values")
+				continue checkLoop
+			}
+
+			// Decode
+			// 0 - msg type
+			// 1 - time
+			// 2 - is data valid or not
+			// 3: - other data
+
+			// Is valid value
+			if values[2] == "A" {
+				st.IsValidData = true
+			}
+		case "GST":
+			g.logger.Println("check GST")
+			// Check len
+			if len(values) < 8 {
+				g.logger.Println("GST too small values")
+				continue checkLoop
+			}
+
+			// Decode
+			// 0 - msg type
+			// 1 - time
+			// 2 - Root Mean Square
+			// 3: - other data
+
+			rms, err := strconv.ParseFloat(values[2], 32)
+			if err != nil {
+				g.logger.Println("RMS decode:", err.Error())
+				continue checkLoop
+			}
+			st.Rms = float32(rms)
+		}
+	}
+
+	return st, nil
+}

api/modem/internet/ic.go

@@ -0,0 +1,241 @@
+package internet
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem/at"
+)
+
+var apns = map[string]string{
+	"Tinkoff": "m.tinkoff",
+}
+
+const pppConfigName = "annalistnet"
+const pppConfig = `
+# Annalist project custom internet connection
+
+# APN:
+connect "/usr/sbin/chat -v -f /etc/chatscripts/gprs -T %s"
+
+# Port:
+%s
+
+# Baudrate:
+%d
+
+noipdefault
+usepeerdns
+defaultroute
+persist
+noauth
+nocrtscts
+local
+`
+
+type conn struct {
+	logger *log.Logger
+	port   at.Port
+}
+
+type Conn interface {
+	Init() error
+	ConfigurePPP() error
+	Ping() bool // Is connected
+	io.Closer
+}
+
+func New(logger *log.Logger, port at.Port) Conn {
+	return &conn{
+		logger: logger,
+		port:   port,
+	}
+}
+
+func (c *conn) checkPackageExist(pname string) bool {
+	resp, err := exec.Command("apt-mark", "showmanual", pname).Output()
+	c.logger.Println("CHECK:", resp)
+	if err != nil {
+		c.logger.Println("CHECK PACKAGE ERROR: ", err.Error())
+		return false
+	}
+	return string(resp[:len(pname)]) == pname
+}
+
+func (c *conn) ensurePackage(pname string) error {
+	if c.checkPackageExist(pname) {
+		return nil
+	}
+	return fmt.Errorf("package %s not installed", pname)
+	// c.logger.Println("Installing", pname, "package...")
+	// resp, err := exec.Command("apt-get", "install", pname).Output()
+	// if err != nil {
+	// return fmt.Errorf("execute install cmd: %w", err)
+	// }
+	// c.logger.Println(resp)
+	// c.logger.Println("\x1b[38;2;255;0;0mComplete\x1b[38;2;255;255;255m")
+	// return nil
+}
+
+// Check requirenments
+func (c *conn) checkReqs() error {
+	// Check AT port for sure
+	if c.port == nil || !c.port.IsConnected() {
+		return fmt.Errorf("AT port is not connect or nil")
+	}
+
+	// Ensure all necessary packages installed
+	if err := c.ensurePackage("ppp"); err != nil {
+		return fmt.Errorf("ensure ppp package: %w", err)
+	}
+	// if err := c.ensurePackage("net-tools"); err != nil {
+	// 	return fmt.Errorf("ensure net-tools package: %w", err)
+	// }
+
+	// Check SIM is valid
+	//   AT+CPIN? and just check
+	resp, err := c.port.Send("AT+CPIN?")
+	if err != nil {
+		return fmt.Errorf("AT+CPIN? request: %w", err)
+	}
+	if !resp.Check() {
+		return fmt.Errorf("validate SIM: error response: %s", resp)
+	}
+	return nil
+}
+
+func (c *conn) ConfigurePPP() error {
+	// Get provider name and its APN
+	resp, err := c.port.Send("AT+CSPN?")
+	if err != nil {
+		return fmt.Errorf("AT+CSPN? request: %w", err)
+	}
+	if !resp.Check() {
+		return fmt.Errorf("get provider: error response: %s", resp)
+	}
+	strs := strings.Split(string(resp), "\"")
+	if len(strs) < 3 {
+		return fmt.Errorf("parse AT+CSPN response: %s", string(resp))
+	}
+	provider := strs[1]
+	apn := apns[provider]
+	if apn == "" {
+		return fmt.Errorf("no apn for provider: %s", provider)
+	}
+
+	// Make config
+	c.logger.Printf("Config values: %s, %s, %d", apn, c.port.GetName(), c.port.GetBaudrate())
+	config := fmt.Sprintf(pppConfig, apn, c.port.GetName(), c.port.GetBaudrate())
+
+	// Write to file
+	f, err := os.OpenFile("/etc/ppp/peers/"+pppConfigName, os.O_CREATE|os.O_WRONLY, 0666)
+	if err != nil {
+		return fmt.Errorf("open ppp config file %w", err)
+	}
+	defer f.Close()
+	if _, err := f.Write([]byte(config)); err != nil {
+		return fmt.Errorf("write to ppp config file: %w", err)
+	}
+	return nil
+}
+
+func (c *conn) setup() error {
+	c.logger.Println("Check requirenments...")
+	if err := c.checkReqs(); err != nil {
+		return fmt.Errorf("check requirenments: %w", err)
+	}
+	// DEBUG show networks and signal
+	resp, err := c.port.Send("AT+COPS?")
+	if err != nil {
+		return fmt.Errorf("AT+COPS? request: %w", err)
+	}
+	c.logger.Println("DEBUG networks:", resp)
+
+	resp, err = c.port.Send("AT+CSQ")
+	if err != nil {
+		return fmt.Errorf("AT+CSQ request: %w", err)
+	}
+	c.logger.Println("DEBUG signal quality:", resp)
+
+	// Configure ppp
+	// what is better ASK If /etc/ppp/peers/annalistnet not exists
+	c.logger.Println("Configure ppp...")
+	if err := c.ConfigurePPP(); err != nil {
+		return fmt.Errorf("configure ppp: %w", err)
+	}
+	return nil
+}
+
+func (c *conn) connect() error {
+	resp, err := exec.Command("pon", pppConfigName).Output()
+	if err != nil {
+		return fmt.Errorf("execute connect cmd: %w", err)
+	}
+	c.logger.Println("DEBUG pon response:", string(resp))
+	return nil
+}
+
+func (c *conn) diconnect() error {
+	resp, err := exec.Command("poff", pppConfigName).Output()
+	if err != nil {
+		return fmt.Errorf("execute disconnect cmd: %w", err)
+	}
+	c.logger.Println("DEBUG poff response:", string(resp))
+	return nil
+}
+
+func (c *conn) Init() error {
+	// Setup
+	c.logger.Println("Setup...")
+	if err := c.setup(); err != nil {
+		return fmt.Errorf("setup: %w", err)
+	}
+	// Connect
+	c.logger.Println("Connect...")
+	if err := c.connect(); err != nil {
+		return fmt.Errorf("connect: %w", err)
+	}
+
+	//DEBUG
+	resp, err := exec.Command("ifconfig").Output()
+	if err != nil {
+		return fmt.Errorf("execute ifconfig cmd: %w", err)
+	}
+	c.logger.Println("DEBUG ifconfig resp:", string(resp))
+
+	// Test connectin using Ping
+	c.logger.Println("Test...")
+	if !c.Ping() {
+		return fmt.Errorf("ping failed")
+	}
+	return nil
+}
+
+func (c *conn) Ping() bool {
+	// Test - try to connect to Google DNS
+	//   ping -I ppp0 8.8.8.8
+	resp, err := exec.Command("ping", "8.8.8.8").Output()
+	if err != nil {
+		c.logger.Println("Ping 1 cmd error:", err)
+	}
+	c.logger.Println("Ping 1 resp:", string(resp))
+
+	resp, err = exec.Command("ping", "-I", "ppp0", "8.8.8.8").Output()
+	if err != nil {
+		c.logger.Println("Ping 2 cmd error:", err)
+	}
+	c.logger.Println("Ping 2 resp:", string(resp))
+
+	return !(strings.Contains(string(resp), "Destination Host Unreachable") || strings.Contains(string(resp), "Destination Net Unreachable")) // tmp solution
+}
+
+func (c *conn) Close() error {
+	if err := c.diconnect(); err != nil {
+		return fmt.Errorf("diconnect: %w", err)
+	}
+	return nil
+}

api/modem/modem.go

@@ -7,39 +7,61 @@ import (
 	"os"
 	"os/exec"
 	"strings"
+	"sync"
 	"time"
 
-	"github.com/CGSG-2021-AE4/modem-test/api/modem/at"
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem/at"
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem/gpio"
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem/gps"
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem/internet"
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem/sms"
 )
 
 type ModemData struct {
 	Port string `json:"Port"`
-	GpsData
+	gps.Data
 }
 
 type modem struct {
 	// Internal values
 	logger *log.Logger
+	mutex  sync.Mutex
 
 	// Serial values
 	baudrate   int
-
 	deviceName string
 	port       at.Port
 
 	// Gpio values
-	onOffPin gpioPin
+	onOffPin gpio.Pin // For turning on and off
 
 	// Other values
-	gpsInfo        GpsData
 	lastUpdateTime time.Time
+
+	// GPS
+	gps gps.Gps
+
+	// Internet connection
+	ic internet.Conn
+
+	// Sms and calls
+	sms sms.Sms
 }
 
 type Modem interface {
 	Init() error
-	Validate() bool
+	IsConnected() bool
 	Update() error
-	GetInfo() ModemData
+	GetData() ModemData
+
+	PowerOn() error
+	PowerOff() error
+
+	// Access to SMS, GPS, AT interfaces mostly for debug
+	At() at.Port  // Send
+	Gps() gps.Gps // Update, GetData, GetStatus
+	Sms() sms.Sms // Send, ReadNew
+
 	io.Closer
 }
 
@@ -47,18 +69,21 @@ func New(logger *log.Logger) Modem {
 	return &modem{
 		logger:   logger,
 		baudrate: 115200,
-		onOffPin:       gpioPin{Pin: 6},
+		onOffPin: gpio.New(log.New(logger.Writer(), "gpio", log.LstdFlags), 6),
+
 		lastUpdateTime: time.Now(),
 	}
 }
 
 func (m *modem) Init() error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
 	// Turn module on
-	// log.Println("=============================== Turn on module")
-	// if err := m.onOffPin.Init(); err != nil {
-	// 	return fmt.Errorf("gpio pin init: %w", err)
-	// }
-	// onOffPin.PowerOn()
+	m.logger.Println("=============================== Turn on module")
+	if err := m.onOffPin.Init(); err != nil {
+		return fmt.Errorf("gpio pin init: %w", err)
+	}
 
 	// Search
 	m.logger.Println("=============================== Search")
@@ -82,91 +107,129 @@ func (m *modem) Init() error {
 		return fmt.Errorf("connect: %w", err)
 	}
 
-	// Tests
-	m.logger.Println("=============================== Test")
-	if err := m.testGPS(); err != nil {
-		return fmt.Errorf("testGPS: %w", err)
-	}
-	return nil
+	// Init submodules
+	submodulesLogger := m.logger.Writer() // FOR more logs
+	// submodulesLogger := io.Discard // FOR less logs
+
+	m.logger.Println("=============================== Init submodules")
+	m.ic = internet.New(log.New(submodulesLogger, "modem-internet : ", log.LstdFlags), m.port)
+	if err := m.ic.Init(); err != nil {
+		m.logger.Printf("\x1b[38;2;255;0;0mInternet: %s\x1b[38;2;255;255;255m\n", err.Error())
+	} else {
+		m.logger.Println("\x1b[38;2;0;255;0mInternet OK\x1b[38;2;255;255;255m")
 	}
 
-func (m *modem) Validate() bool {
-	return m.isConnected()
+	m.sms = sms.New(log.New(submodulesLogger, "modem-sms : ", log.LstdFlags), m.port)
+	if err := m.sms.Init(); err != nil {
+		m.logger.Printf("\x1b[38;2;255;0;0mSMS: %s\x1b[38;2;255;255;255m\n", err.Error())
+	} else {
+		m.logger.Println("\x1b[38;2;0;255;0mSMS OK\x1b[38;2;255;255;255m")
+	}
+
+	m.gps = gps.New(log.New(submodulesLogger, "modem-gps : ", log.LstdFlags), m.port)
+	if err := m.gps.Init(); err != nil {
+		m.logger.Printf("\x1b[38;2;255;0;0mgps init %w\x1b[38;2;255;255;255m\n", err)
+	} else {
+		m.logger.Println("\x1b[38;2;0;255;0mGPS OK\x1b[38;2;255;255;255m")
+	}
+
+	// Tests
+	// GPS works fine but almost always there is no signal
+	// m.logger.Println("=============================== Test")
+	// if err := m.testGPS(); err != nil {
+	// 	return fmt.Errorf("testGPS: %w", err)
+	// }
+
+	return nil
 }
 
 func (m *modem) Update() error {
-	if !m.isConnected() {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	if !m.IsConnected() {
 		m.logger.Println("No connection to module")
 		return nil
 	}
-	m.logger.Println("Update")
-	// ans, err := m.port.Request(at.CmdQuestion, "CGPSINFO")
-	// if err != nil {
-	// 	return fmt.Errorf("check GPS info mode: %w", err)
-	// }
-	// ok := ans == "1"
-	// if !ok {
-	// 	_, err := m.port.Request(at.CmdCheck, "CGPSINFO")
-	// 	if err != nil {
-	// 		return fmt.Errorf("switch to GPS info mode: %w", err)
-	// 	}
-	// 	m.logger.Println("switched to GPS mode")
-	// } else {
-	// 	m.logger.Println("mode in right GPS mode")
-	// }
+	m.logger.Println("Update", m.gps)
+	if err := m.gps.Update(); err != nil {
+		m.logger.Println("gps update:", err.Error())
+	}
+	// Read new messages
 
-	// Update
-	m.logger.Println("Receiving GPS data...")
-	resp, err := m.port.Send("AT+CGPSINFO")
-	if err != nil {
-		return fmt.Errorf("receive GPS data: %w", err)
-	}
-	if !resp.Check() {
-		return fmt.Errorf("error response")
-	}
-	m.logger.Println("Decoding data...")
-
-	if err := m.gpsInfo.decode(strings.Split(strings.Replace(resp.RmFront("+CGPSINFO:").String(), "\r", "", -1), "\n")[0]); err != nil {
-		m.logger.Println("Gps info decode error:", err.Error())
-		return nil
-	}
-	m.logger.Println("Decoded successfully")
 	return nil
 }
 
-func (m *modem) GetInfo() ModemData {
+func (m *modem) GetData() ModemData {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
 	return ModemData{
 		Port: m.port.GetName(),
-		GpsData: m.gpsInfo,
+		Data: m.gps.GetData(),
 	}
 }
 
-func (m *modem) Close() error {
-	// Not right way I think
-	if err := m.port.Close(); err != nil {
-		return err
-	}
-	if err := m.onOffPin.Close(); err != nil {
-		return err
-	}
+func (m *modem) PowerOn() error {
+	m.onOffPin.PowerOn() // DEBUG do not want to wait 30 seconds
 	return nil
 }
 
+func (m *modem) PowerOff() error {
+	_, err := m.At().Send("AT+CPOF")
+	return err
+}
+
+func (m *modem) Sms() sms.Sms {
+	return m.sms
+}
+
+func (m *modem) Gps() gps.Gps {
+	return m.gps
+}
+
+func (m *modem) At() at.Port {
+	return m.port
+}
+
+func (m *modem) Close() error { // I can't return error so I log it
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	if err := m.sms.Close(); err != nil {
+		m.logger.Printf("\x1b[38;2;255;0;0mclose sms error: %s\x1b[38;2;255;255;255m\n", err.Error())
+	}
+
+	if err := m.port.Close(); err != nil {
+		m.logger.Printf("\x1b[38;2;255;0;0mclose serial port error: %s\x1b[38;2;255;255;255m\n", err.Error())
+	}
+	if err := m.onOffPin.Close(); err != nil {
+		m.logger.Printf("\x1b[38;2;255;0;0mclose gpio pin error: %s\x1b[38;2;255;255;255m\n", err.Error())
+	}
+	if err := m.ic.Close(); err != nil {
+		m.logger.Printf("\x1b[38;2;255;0;0mclose internet connection error: %s\x1b[38;2;255;255;255m\n", err.Error())
+	}
+
+	return nil
+}
+
+///////////// Private functions
+
 func (m *modem) connect() error {
-	if !m.Validate() {
+	if m.port == nil {
 		return fmt.Errorf("port is not defined")
 	}
 	return m.port.Connect()
 }
 
 func (m *modem) disconnect() error {
-	if !m.Validate() {
+	if m.port == nil {
 		return fmt.Errorf("port is not defined")
 	}
 	return m.port.Disconnect()
 }
 
-func (m *modem) isConnected() bool {
+func (m *modem) IsConnected() bool {
 	if m.port != nil {
 		return m.port.IsConnected()
 	}
@@ -176,10 +239,6 @@ func (m *modem) isConnected() bool {
 func (m *modem) testGPS() error {
 	m.logger.Println("Testing GPS")
 
-	if err := m.switchToGpsMode(); err != nil {
-		return fmt.Errorf("switch to GPS: %w", err)
-	}
-
 	if err := m.Update(); err != nil {
 		return fmt.Errorf("update: %w", err)
 	}
@@ -190,7 +249,8 @@ func (m *modem) testGPS() error {
 
 // Difference: I do not set \n at the end of string
 func (m *modem) getShortInfo() string {
-	return fmt.Sprintf("%f,%s,%f,%s", m.gpsInfo.Latitude, m.gpsInfo.LatitudeIndicator, m.gpsInfo.Longitude, m.gpsInfo.LongitudeIndicator)
+	d := m.gps.GetData()
+	return fmt.Sprintf("%f,%s,%f,%s", d.Latitude, d.LatitudeIndicator, d.Longitude, d.LongitudeIndicator)
 }
 
 func (m *modem) saveGPS(path string) error {
@@ -198,7 +258,6 @@ func (m *modem) saveGPS(path string) error {
 	if err != nil {
 		return fmt.Errorf("open file: %w", err)
 	}
-
 	defer f.Close()
 
 	if _, err = f.WriteString(m.getShortInfo()); err != nil {
@@ -207,6 +266,35 @@ func (m *modem) saveGPS(path string) error {
 	return nil
 }
 
+// Short way to send command
+func (m *modem) printCmd(cmd string) {
+	if resp, err := m.port.Send(cmd); err != nil {
+		m.logger.Println("FAILED TO SEND REQ", cmd, ":", err.Error())
+	} else {
+		_ = resp
+		// m.logger.Println("CMD", cmd, ":", resp)
+	}
+}
+
+// Some required commands before checking port
+func (m *modem) setupPort() error {
+	// Reset input
+	if err := m.port.SerialPort().ResetInputBuffer(); err != nil {
+		return fmt.Errorf("reset input buffer: %w", err)
+	}
+	// Reset output
+	if err := m.port.SerialPort().ResetOutputBuffer(); err != nil {
+		return fmt.Errorf("reset output buffer: %w", err)
+	}
+
+	// These commands ensure that correct modes are set
+	m.printCmd("ATE0")         // Sometimes enables echo mode
+	m.printCmd("AT+CGPSFTM=0") // Sometimes does not turn off nmea
+	m.printCmd("AT+CMEE=2")    // Turn on errors describtion
+
+	return nil
+}
+
 func (m *modem) checkPort(portName string) (outErr error) {
 	defer func() {
 		if outErr != nil { // Clear port if there is error
@@ -227,22 +315,30 @@ func (m *modem) checkPort(portName string) (outErr error) {
 	}
 	defer m.port.Disconnect() // Do not bother about errors...
 
-	// Ping
-	m.logger.Println("Ping...")
-
-	if err := m.ping(); err != nil {
+	// To filter dead ports
+	if _, err := m.port.Send("AT"); err != nil {
 		return fmt.Errorf("ping error: %w", err)
 	}
 
+	if err := m.setupPort(); err != nil {
+		return fmt.Errorf("setup port: %w", err)
+	}
+
+	// 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)
 	}
 	if !resp.Check() {
-		return fmt.Errorf("error response: %s", resp)
+		return fmt.Errorf("get model: error response: %s", resp)
 	}
 	model := strings.Split(resp.String(), "\n")[0]
 	if err != nil {
@@ -250,10 +346,10 @@ func (m *modem) checkPort(portName string) (outErr error) {
 	}
 	rightModel := "SIMCOM_SIM7600E-H"
 	// m.logger.Printf("[% x]\n [% x]", []byte("SIMCOM_SIM7600E-H"), []byte(model))
-	if model[:len(rightModel)] != rightModel {
+	if len(model) >= len(rightModel) && 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
 }
 
@@ -274,7 +370,7 @@ 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
 		}
 
@@ -288,48 +384,14 @@ SearchLoop:
 func (m *modem) ping() error {
 	resp, err := m.port.Send("AT")
 	if err != nil {
-		return err
+		return fmt.Errorf("AT request: %w", err)
 	}
 	if !resp.Check() {
-		return fmt.Errorf("connection lost")
+		return fmt.Errorf("AT request: error response: %s", resp)
 	}
 	return nil
 }
 
-func (m *modem) switchToGpsMode() error {
-	m.logger.Println("Enabling GPS mode...")
-	// Reset intput
-	if err := m.port.GetSerialPort().ResetInputBuffer(); err != nil {
-		return fmt.Errorf("reset input buffer: %w", err)
-	}
-
-	// Check gps mode status
-	resp, err := m.port.Send("AT+CGPS?")
-	if err != nil {
-		return fmt.Errorf("make at ask: %w", err)
-	}
-	if !resp.Check() {
-		return fmt.Errorf("error response")
-	}
-	ans := strings.Replace(strings.Split(strings.Split(resp.RmFront("+CGPS:").String(), "\n")[0], ",")[0], " ", "", -1)
-	if ans == "1" {
-		m.logger.Println("GPS already enabled")
-		return nil
-	}
-	m.logger.Println(ans)
-
-	// Modem is not in GPS mode
-	resp, err = m.port.Send("AT+CGPS=1")
-	if err != nil {
-		return fmt.Errorf("try to switch to gps: %w", err)
-	}
-	if !resp.Check() {
-		return fmt.Errorf("switch tp GPS failed")
-	}
-	m.logger.Println("GPS mode enabled")
-	return nil
-}
-
 func getTtyDevices() ([]string, error) {
 	// Get ports
 	/**/

api/modem/sms/errors.go

@@ -0,0 +1,69 @@
+package sms
+
+import (
+	"fmt"
+	"strconv"
+)
+
+func DecodeError(code int) string {
+	switch code {
+	case 300:
+		return "ME failure"
+	case 301:
+		return "SMS service of ME reserved"
+	case 302:
+		return "Operation not allowed"
+	case 303:
+		return "Operation not supported"
+	case 304:
+		return "Invalid PDU mode parameter"
+	case 305:
+		return "Invalid text mode parameter"
+	case 310:
+		return "SIM not inserted"
+	case 311:
+		return "SIM PIN required"
+	case 312:
+		return "PH-SIM PIN required"
+	case 313:
+		return "SIM failure"
+	case 314:
+		return "SIM busy"
+	case 315:
+		return "SIM wrong"
+	case 316:
+		return "SIM PUK required"
+	case 317:
+		return "SIM PIN2 required"
+	case 318:
+		return "SIM PUK2 required"
+	case 320:
+		return "Memory failure"
+	case 321:
+		return "Invalid memory index"
+	case 322:
+		return "Memory full"
+	case 330:
+		return "SMSC address unknown"
+	case 331:
+		return "No network service"
+	case 332:
+		return "Network timeout"
+	case 340:
+		return "NO +CNMA ACK EXPECTED"
+	case 341:
+		return "Buffer overflow"
+	case 342:
+		return "SMS size more than expected"
+	case 500:
+		return "Unknown error"
+	}
+	return "UNDEFINED ERROR CODE"
+}
+
+func GetError(msg []byte) (int, error) {
+	if len(msg) >= len("+CMS ERROR: ")+3 && string(msg[:len("+CMS ERROR: ")]) == "+CMS ERROR: " {
+		return strconv.Atoi(string(msg[len("+CMS ERROR: ") : len("+CMS ERROR: ")+3]))
+	}
+	return 0, fmt.Errorf("failed to parse error")
+}

api/modem/sms/sms.go

@@ -0,0 +1,99 @@
+package sms
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"strings"
+
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem/at"
+)
+
+type dialer struct {
+	logger *log.Logger
+	port   at.Port
+}
+
+type Sms interface {
+	Init() error
+	Send(number, msg string) error // Send sms
+	ReadNew() ([]string, error)    // Read new smses
+
+	io.Closer
+}
+
+func New(logger *log.Logger, port at.Port) Sms {
+	return &dialer{
+		logger: logger,
+		port:   port,
+	}
+}
+
+func (d *dialer) Init() error {
+	// Ensure serial port
+	if !d.port.IsConnected() {
+		return fmt.Errorf("serial port is not connected")
+	}
+
+	// Check SIM an PIN
+	if resp, err := d.port.Send("AT+CPIN?"); err != nil || !resp.Check() {
+		if err != nil {
+			return fmt.Errorf("check pin: %w", err)
+		}
+		return fmt.Errorf("check pin: error response: %s", resp)
+	}
+
+	// Ensure text format
+	d.logger.Println(d.port.Send("AT+CMGF"))
+	if resp, err := d.port.Send("AT+CMGF=1"); err != nil || !resp.Check() {
+		if err != nil {
+			return fmt.Errorf("set to text format request: %w", err)
+		}
+		return fmt.Errorf("set SIM format: error response: %s", resp)
+	}
+	return nil
+}
+
+func (d *dialer) Send(number, msg string) error {
+	d.port.Send(fmt.Sprintf(`AT+CMGS="%s"`, number))        // Because it will throw error
+	resp, err := d.port.RawSend(fmt.Sprintf("%s\n\r", msg)) // Add additional \r\n because there is not supposed to be
+	if err != nil {
+		return fmt.Errorf("message request: %w", err)
+	}
+	d.logger.Println("SEND RESPONSE:", resp)
+	resp, err = d.port.RawSend("\x1A")
+	if err != nil {
+		return fmt.Errorf("message request: %w", err)
+	}
+	d.logger.Println("SEND RESPONSE:", resp)
+	errCode, err := GetError([]byte(resp))
+	if err != nil {
+		return fmt.Errorf("send sms failed and failed to get error: %w", err)
+	}
+	return fmt.Errorf("failed to send with SMS error: %d - %s", errCode, DecodeError(errCode))
+}
+
+// Reads all new messages
+func (d *dialer) ReadNew() ([]string, error) {
+	resp, err := d.port.Send("AT+CMGL=\"UNREAD\"")
+	if err != nil {
+		return nil, fmt.Errorf("AT+CMGL request: %w", err)
+	}
+	msgs := strings.Split(strings.Replace(string(resp), "\r", "", -1), "\n")
+
+	outMsgs := make([]string, 0)
+	for _, s := range msgs {
+		if len(s) >= len("+CMGL:") && s[:len("+CMGL:")] == "+CMGL:" {
+			params := strings.Split(s[len("+CMGL:"):], ",")
+			d.logger.Println("GET MSG:", params)
+		} else {
+			outMsgs = append(outMsgs, s)
+		}
+	}
+
+	return outMsgs, nil // TODO
+}
+
+func (d *dialer) Close() error {
+	return nil
+}

go.mod

@@ -1,4 +1,4 @@
-module github.com/CGSG-2021-AE4/modem-test
+module gitea.unprism.ru/KRBL/sim-modem
 
 go 1.22.5
 

main.go

@@ -4,7 +4,7 @@ import (
 	"log"
 	"os"
 
-	"github.com/CGSG-2021-AE4/modem-test/api/modem"
+	"gitea.unprism.ru/KRBL/sim-modem/api/modem"
 )
 
 func main() {
@@ -16,15 +16,46 @@ func main() {
 }
 
 func mainE() error {
-	m := modem.New(log.New(os.Stdout, "modem:", log.LstdFlags))
+	logger := log.New(os.Stdout, "main : ", log.LstdFlags)
+	m := modem.New(log.New(logger.Writer(), "modem : ", log.LstdFlags))
+	logger.Println("||||||||||||||||| INIT |||||||||||||||")
+	if err := m.Init(); err != nil {
+		logger.Println("Init ended with error:", err.Error())
+		logger.Println("Try to turn on")
+		if err := m.PowerOn(); err != nil {
+			return err
+		}
+		logger.Println("Reinit")
 		if err := m.Init(); err != nil {
 			return err
 		}
+	}
+	if !m.IsConnected() {
+		logger.Println("AAAAAAAAAAAAAAA Modem is not connected")
 		return nil
-	// ports, err := serial.GetPortsList()
-	// if err != nil {
+	}
+	logger.Println("||||||||||||||||| GET INFO |||||||||||||||||")
+	logger.Println(m.Update())
+	logger.Printf("DATA: %+v\n", m.GetData())
+
+	logger.Println("||||||||||||||||| SEND SMS |||||||||||||||||")
+	logger.Println(m.At().Send("AT+CNUM"))
+	// if err := m.Sms().Send("+79218937173", "CGSG forever"); err != nil {
 	// 	return err
 	// }
-	// log.Println(ports)
-	// return nil
+	if ms, err := m.Sms().ReadNew(); err != nil {
+		return err
+	} else {
+		logger.Println("NEW:", ms)
+	}
+	logger.Println("||||||||||||||||| Checking gps status  |||||||||||||||||")
+	st, err := m.Gps().GetStatus()
+	if err != nil {
+		return err
+	}
+	logger.Printf("GPS Status:%+v\n", st)
+
+	// logger.Println("Turn off", m.PowerOff())
+
+	return nil
 }

readme.md

@@ -1,2 +0,0 @@
-ISSUES:
-  - create input buffer every at port creation