// Init invokes a set of methods that will make the initial setup of the modem.
func (p *DefaultProfile) Init(d *Device) (err error) {
p.dev = d
p.dev.Send(NoopCmd) // kinda flush
if err = p.COPS(true, true); err != nil {
return errors.New("at init: unable to adjust the format of operator's name")
}
var info *SystemInfoReport
if info, err = p.SYSINFO(); err != nil {
return errors.New("at init: unable to read system info")
}
p.dev.State = &DeviceState{
ServiceState: info.ServiceState,
ServiceDomain: info.ServiceDomain,
RoamingState: info.RoamingState,
SystemMode: info.SystemMode,
SystemSubmode: info.SystemSubmode,
SimState: info.SimState,
}
if p.dev.State.OperatorName, err = p.OperatorName(); err != nil {
return errors.New("at init: unable to read operator's name")
}
if p.dev.State.ModelName, err = p.ModelName(); err != nil {
return errors.New("at init: unable to read modem's model name")
}
if p.dev.State.IMEI, err = p.IMEI(); err != nil {
return errors.New("at init: unable to read modem's IMEI code")
}
if err = p.CMGF(false); err != nil {
return errors.New("at init: unable to switch message format to PDU")
}
if err = p.CPMS(MemoryTypes.NvRAM, MemoryTypes.NvRAM, MemoryTypes.NvRAM); err != nil {
return errors.New("at init: unable to set messages storage")
}
if err = p.CNMI(1, 1, 0, 0, 0); err != nil {
return errors.New("at init: unable to turn on message notifications")
}
var octets map[uint64][]byte
if octets, err = p.CMGL(MessageFlags.Any); err != nil {
return errors.New("at init: unable to check message inbox")
}
for n, oct := range octets {
var msg sms.Message
if _, err := msg.ReadFrom(oct); err != nil {
return errors.New("at init: error while parsing message inbox")
}
if err := p.CMGD(n, DeleteOptions.Index); err != nil {
return errors.New("at init: error while cleaning message inbox")
}
d.messages <- &msg
}
return nil
}
// 处理短信PUD字符串.
// s 串口接收到的PDU字符串.
func (g *Gsm) handleSMS(s string) {
b, err := hex.DecodeString(s)
if nil != err {
g.mLogger.Error(`GSMSMS: Decode sms hex string error "%v"`, err)
return
}
var msg sms.Message
_, err = msg.ReadFrom(b)
if err != nil {
g.mLogger.Error(`GSMSMS: Decode sms message error "%v"`, err)
return
}
select {
case g.mChanSMS <- &msg:
default:
g.mLogger.Debug(`GSMSMS: Drop [%v]"%v"`, string(msg.Address), msg.Text)
}
}
// 发送短信.
// num 接收者的号码.
// msg 需要发送的短信内容.
// return 错误; ==nil 发送正常.
func (g *Gsm) SendSMS(num, msg string) error {
g.mMutex.Lock()
defer g.mMutex.Unlock()
if _, err := g.atcmd("AT", "OK", time.Millisecond*250); nil != err {
return err
}
s := sms.Message{
Encoding: sms.Encodings.Gsm7Bit,
Text: msg,
Address: sms.PhoneNumber(num),
VP: sms.ValidityPeriod(time.Hour * 24 * 4),
VPFormat: sms.ValidityPeriodFormats.Relative,
Type: sms.MessageTypes.Submit,
}
if len(msg) != len([]rune(msg)) {
s.Encoding = sms.Encodings.UCS2
}
n, octets, err := s.PDU()
if err != nil {
return err
}
cmd := fmt.Sprintf("AT+CMGS=%d", n)
if _, err := g.atcmd(cmd, "", time.Millisecond*300); nil != err {
return err
}
buf := make([]byte, hex.EncodedLen(len(octets))+1)
n = hex.Encode(buf, octets)
buf[n] = 0x1A
if _, err := g.mPort.Write(buf); nil != err {
return err
}
_, err = g.atcmd("", "OK", time.Second*10)
return err
}
// SendSMS sends an SMS message with given text to the given address,
// the encoding and other parameters are default.
func (d *Device) SendSMS(text string, address sms.PhoneNumber) (err error) {
msg := sms.Message{
Text: text,
Type: sms.MessageTypes.Submit,
Encoding: sms.Encodings.Gsm7Bit,
Address: address,
VPFormat: sms.ValidityPeriodFormats.Relative,
VP: sms.ValidityPeriod(24 * time.Hour * 4),
}
for _, w := range text {
// detected a double-width char
if w > 1 {
msg.Encoding = sms.Encodings.UCS2
break
}
}
n, octets, err := msg.PDU()
if err != nil {
return err
}
err = d.Commands.CMGS(n, octets)
return
}
// handleReport detects and parses a report from the notification port represented
// as a string. The parsed values may change the inner state or be sent over out channels.
func (d *Device) handleReport(str string) (err error) {
report := Reports.Resolve(str)
str = strings.TrimSpace(strings.TrimPrefix(str, report.ID))
switch report {
case Reports.Message:
var report messageReport
if err = report.Parse(str); err != nil {
return
}
var octets []byte
octets, err = d.Commands.CMGR(report.Index)
if err != nil {
return
}
if err = d.Commands.CMGD(report.Index, DeleteOptions.Index); err != nil {
return
}
var msg sms.Message
if _, err = msg.ReadFrom(octets); err != nil {
return
}
d.messages <- &msg
case Reports.Ussd:
var ussd ussdReport
if err = ussd.Parse(str); err != nil {
return
}
var text string
if ussd.Enc == Encodings.UCS2 {
text, err = pdu.DecodeUcs2(ussd.Octets)
if err != nil {
return
}
} else if ussd.Enc == Encodings.Gsm7Bit {
text, err = pdu.Decode7Bit(ussd.Octets)
if err != nil {
return
}
} else {
return ErrUnknownEncoding
}
d.ussd <- Ussd(text)
case Reports.SignalStrength:
var rssi signalStrengthReport
if err = rssi.Parse(str); err != nil {
return
}
if d.State.SignalStrength != int(rssi) {
d.State.SignalStrength = int(rssi)
d.updated <- struct{}{}
}
case Reports.Mode:
var report modeReport
if err = report.Parse(str); err != nil {
return
}
var updated bool
if d.State.SystemMode != report.Mode {
d.State.SystemMode = report.Mode
updated = true
}
if d.State.SystemSubmode != report.Submode {
d.State.SystemSubmode = report.Submode
updated = true
}
if updated {
d.updated <- struct{}{}
}
case Reports.ServiceState:
var report serviceStateReport
if err = report.Parse(str); err != nil {
return
}
if d.State.ServiceState != Opt(report) {
d.State.ServiceState = Opt(report)
d.updated <- struct{}{}
}
case Reports.SimState:
var report simStateReport
if err = report.Parse(str); err != nil {
return
}
if d.State.SimState != Opt(report) {
d.State.SimState = Opt(report)
d.updated <- struct{}{}
}
case Reports.BootHandshake:
var token bootHandshakeReport
if err = token.Parse(str); err != nil {
return
}
if err = d.Commands.BOOT(uint64(token)); err != nil {
return
}
case Reports.Stin:
// ignore. what is this btw?
default:
switch FinalResults.Resolve(str) {
case FinalResults.Noop, FinalResults.NotSupported, FinalResults.Timeout:
// ignore
default:
return errors.New("at: unknown report: " + str)
}
}
return
}
