Examples needed

[ambiflextrous]

I new to the go language I would like a simple example for sending messages using at package.

import package 
import "github.com/xlab/at"

func main(){
dev = &Device{
	CommandPort: "/dev/ttyUSB1",
	NotifyPort:  ?,
}
if err = dev.Open(); err != nil {
	return

//how to send message code

//how to check balance code
}
}

[vinhjaxt]

From at_test.go:
How to send SMS:

package main

import (
	"log"
	"time"

	"github.com/xlab/at"
	"github.com/xlab/at/sms"
)

var dev *at.Device

// openDevice opens the hardcoded device paths for reading and writing,
// also inits this device with the default device profile.
func openDevice() (err error) {
	dev = &at.Device{
		CommandPort: "/dev/ttyUSB2", // or COM23 on windows
		NotifyPort:  "/dev/ttyUSB2", // or COM23 on windows
	}
	if err = dev.Open(); err != nil {
		return
	}
	if err = dev.Init(at.DeviceE173()); err != nil {
		return
	}
	return
}

func main() {
	err := openDevice()
	if err != nil {
		log.Panicln(err)
	}
	defer dev.Close()

	msg := sms.Message{
		Text:     "Your text message",
		Type:     sms.MessageTypes.Submit,
		Encoding: sms.Encodings.UCS2,
		Address:  sms.PhoneNumber("+84902107791"), // Your phone number
		VPFormat: sms.ValidityPeriodFormats.Relative,
		VP:       sms.ValidityPeriod(24 * time.Hour * 4),
	}
	n, octets, err := msg.PDU()
	if err != nil {
		log.Panicln(err)
	}

	err = dev.Commands.CMGS(n, octets)
	if err != nil {
		log.Panicln(err)
	}

}

How to send USSD command (to check Balance):

package main

import (
	"log"

	"github.com/xlab/at"
	"github.com/xlab/at/pdu"
)

var dev *at.Device

// openDevice opens the hardcoded device paths for reading and writing,
// also inits this device with the default device profile.
func openDevice() (err error) {
	dev = &at.Device{
		CommandPort: "/dev/ttyUSB2", // or COM23 on windows
		NotifyPort:  "/dev/ttyUSB2", // or COM23 on windows
	}
	if err = dev.Open(); err != nil {
		return
	}
	if err = dev.Init(at.DeviceE173()); err != nil {
		return
	}
	return
}

func main() {
	err := openDevice()
	if err != nil {
		log.Panicln(err)
	}
	defer func() {
		dev.Close()
	}()

	// Replace *101# by your USSD command
	err = dev.Commands.CUSD(at.UssdResultReporting.Enable, pdu.Encode7Bit("*101#"), at.Encodings.Gsm7Bit)
	if err != nil {
		log.Panicln(err)
	}

	// wait for ussd reply
	ussdReplyChan := dev.UssdReply()
	ussdReply := <-ussdReplyChan

	log.Println("USSD reply:", ussdReply.String())
}

[gemaalief]

does this lib over delivery report?

[zombozo12]

@vinhjaxt What is the best way to initiate multiple USB modems?

[xlab]

@vinhjaxt What is the best way to initiate multiple USB modems?

Hey! I will point in the direction but didn't test it myself.

You can create multiple configs like these to point to your different devices:

	dev = &at.Device{
		CommandPort: "/dev/ttyUSB2",
		NotifyPort:  "/dev/ttyUSB2",
	}

	dev2 = &at.Device{
		CommandPort: "/dev/ANOTHER_ttyUSB",
		NotifyPort:  "/dev/ANOTHER_ttyUSB",
	}

Then use dev.Open() and dev.Init() as usual (and same with dev2).