func (sm *StateMachine) sendSMS(sms *C.GSM_SMSMessage, number string, report bool) error {
C.CopyUnicodeString(&sms.SMSC.Number[0], &sm.smsc.Number[0])
decodeUTF8(&sms.Number[0], number)
if report {
sms.PDU = C.SMS_Status_Report
} else {
sms.PDU = C.SMS_Submit
}
// Send mepssage
sm.status = C.ERR_TIMEOUT
if e := C.GSM_SendSMS(sm.g, sms); e != C.ERR_NONE {
return Error{"SendSMS", e}
}
// Wait for reply
t := time.Now()
for time.Now().Sub(t) < sm.Timeout {
C.GSM_ReadDevice(sm.g, C.TRUE)
if sm.status == C.ERR_NONE {
// Message sent OK
break
} else if sm.status != C.ERR_TIMEOUT {
// Error
break
}
}
if sm.status != C.ERR_NONE {
return Error{"ReadDevice", sm.status}
}
return nil
}
// Sends message
func (g *GSM) SendSMS(text, number string) (err error) {
var sms C.GSM_SMSMessage
var smsc C.GSM_SMSC
sms.PDU = C.SMS_Submit // submit message
sms.UDH.Type = C.UDH_NoUDH // no UDH, just a plain message
sms.Coding = C.SMS_Coding_Default_No_Compression // default coding for text
sms.Class = 1 // class 1 message (normal)
C.EncodeUnicode((*C.uchar)(unsafe.Pointer(&sms.Text)), C.CString(text), C.int(len(text)))
C.EncodeUnicode((*C.uchar)(unsafe.Pointer(&sms.Number)), C.CString(number), C.int(len(number)))
// we need to know SMSC number
smsc.Location = 1
e := C.GSM_GetSMSC(g.sm, &smsc)
if e != ERR_NONE {
err = errors.New(errorString(int(e)))
return
}
// set SMSC number in message
sms.SMSC.Number = smsc.Number
// Set flag before callind SendSMS, some phones might give instant response
smsSendStatus = ERR_TIMEOUT
// send message
e = C.GSM_SendSMS(g.sm, &sms)
if e != ERR_NONE {
err = errors.New(errorString(int(e)))
return
}
// wait for network reply
for {
C.GSM_ReadDevice(g.sm, C.gboolean(1))
if smsSendStatus == ERR_NONE {
break
}
if smsSendStatus != ERR_TIMEOUT {
err = errors.New(errorString(int(smsSendStatus)))
break
}
}
return
}