Public modem_apn As String * 50            'Current Access Point Name
Public modem_battery_voltage               'Modem's current battery voltage
  Units modem_battery_voltage = V  
Public modem_current_day_usage As Long     'Today data usage statistics
  Units modem_current_day_usage = kB
Public modem_current_month_usage As Long   'Current month's data usage
  Units modem_current_month_usage = kB
Public modem_diversity As String           'Current setting for the Diversity Antenna
Public modem_ecio                          'Current ECIO value (3G signal quality)
Public modem_ipprotocol As String          'Current setting for IP Protocol (IPv4, IPv6, or IPv4/IPv6)
Public modem_mode As String                'Current modem mode (PPP or Serial Server)
Public modem_previous_day_usage As Long    'Previous day's data usage
  Units modem_previous_day_usage = kB
Public modem_previous_month_usage As Long  'Previous month's data usage
  Units modem_previous_month_usage = kB
Public modem_rsrp                          'Current modem RSRP value (LTE signal Strength)
Public modem_rsrq                          'Current modem RSRQ value (LTE signal Quality)
Public modem_rssi                          'Current modem RSSI value (3G signal strength)
Public modem_sdc_address                   'Modem's current SDC address (CS I/O Port SDC Address setting)
Public modem_state As String * 60          'Current state of the modem (status)
Public modem_is_off As Boolean
Public modem_reset_needed As Boolean

'variables used to parse the strings returned by the modem.
Const CRLF = CHR(13) & CHR(10) 
Public returned_value As String * 70 'Temp string to hold the values returned by the modem

'Other variables 
Public battery_voltage
Public panel_temperature_c

DataTable(CELL_DIAGNOSTICS, TRUE, -1)
  Sample(1, modem_apn, String)
  Sample(1, modem_battery_voltage, FP2)
  Sample(1, modem_current_day_usage, IEEE4)
  Sample(1, modem_current_month_usage, IEEE4)
  Sample(1, modem_diversity, String)
  Sample(1, modem_ecio, FP2)
  Sample(1, modem_ipprotocol, String)
  Sample(1, modem_mode, String)
  Sample(1, modem_previous_day_usage, IEEE4)
  Sample(1, modem_previous_month_usage, IEEE4)
  Sample(1, modem_rsrp, FP2)
  Sample(1, modem_rsrq, FP2)
  Sample(1, modem_rssi, FP2) 
  Sample(1, modem_sdc_address, FP2)
  Sample(1, modem_state, String)
  Sample(1, modem_is_off, Boolean)
  Sample(1, modem_reset_needed, Boolean)
EndTable

BeginProg
  'Setup Campbell Scientific external modem
  #If ((LoggerType = CR6 AND OSVERSION >= 9) OR (LoggerType = CR1000X AND OSVERSION >= 3) OR (LoggerType = CR300 AND OSVERSION >= 8)) Then
    SetSetting("CellAPN", "WE01.VZWSTATIC")
    SetSetting("CellDiversity", 0)
    SetSetting("CELLBIllingDay", 10)
    'Open a serial connection to the modem using the SDC address listed in the modem's Terminal Port CS I/O SDC Address: setting.
    SerialOpen(ComSDC11, 460800, 0, 0, 500)
  #Else
    modem_reset_needed = FALSE
    'Open a serial connection to the modem using the SDC address listed in the modem's Terminal Port CS I/O SDC Address: setting.
    SerialOpen(ComSDC11, 460800, 0, 0, 500)
    SerialOut(ComSDC11, CRLF , "CELL2xx>", 1, 200)
    SerialOut(ComSDC11, "set apn WE01.VZWSTATIC" & CRLF, CRLF, 1, 200) 'Set the APN in the modem as required by the cellular provider
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    If (returned_value = "APN saved. Cellular module reset required!" & CHR(13)) Then
      modem_reset_needed = TRUE
    EndIf
    
    SerialOut(ComSDC11, "set div 0" & CRLF, CRLF, 1, 200) 'Tell the modem not to use the diversity anteanna on the cellular modem (default). 0 = off 1 = on
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    If (returned_value = "Diversity saved. Cellular module reset required!" & CHR(13)) Then
      modem_reset_needed = TRUE
    EndIf
    
    SerialOut(ComSDC11, "set baud 115200" & CRLF, CRLF, 1, 200) 'Set the baud rate on the RS-232 port of the cellular modem
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    If (returned_value = "Baud rate saved. Cellular module reset required!" & CHR(13)) Then
      modem_reset_needed = TRUE
    EndIf

    SerialOut(ComSDC11, "set mode PPP" & CRLF, CRLF, 1, 200) 'Set the mode the modem operates in PPP or SERIAL
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    If (returned_value = "Mode set to PPP mode. Reboot required!" & CHR(13)) Then
      modem_reset_needed = TRUE
    EndIf
    
    SerialOut(ComSDC11, "set sdc 7" & CRLF, CRLF, 1, 200) 'Set the SDC address of the modem (7, 8, 10, 11)
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    If (returned_value = "SDC address saved. Cellular module reset required!" & CHR(13)) Then
      modem_reset_needed = TRUE
    EndIf
    
    SerialOut(ComSDC11, "set listen port 3001" & CRLF, CRLF, 1, 200) 'Set the mode the modem operates in PPP or SERIAL
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    If (returned_value = "Listen port set. Reboot required!" & CHR(13)) Then
      modem_reset_needed = TRUE
    EndIf
    
    SerialOut(ComSDC11, "set billing 10" & CRLF, CRLF, 1, 200) 'Set day of the month for billing statistics
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    
    SerialOut(ComSDC11, "set roaming auto" & CRLF, CRLF, 1, 200) 'Set the roaming mode of the datalogger (Auto or disabled).
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    If (returned_value = "Roaming set to Auto. Cellular module reset required!" & CHR(13)) Then
      modem_reset_needed = TRUE
    EndIf
    
    SerialOut(ComSDC11, "set ipprotocol IPv4" & CRLF, CRLF, 1, 200) 'Set the IP protocol used on the cellular network (IPv4, IPv6, or IPv4/IPv6).
    SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
    If (returned_value = "Protocol set to IPV4. Cellular module reset required!" & CHR(13)) Then
      modem_reset_needed = TRUE
    EndIf

    'other set commands include:
    '  set ppp user (PPP username in modem)
    '  set ppp pass (PPP password in modem)
    '  set comms watch (allows user to sniff/watch a port, usually not used programactically)
    
    If (modem_reset_needed = TRUE) Then
      Do While (modem_reset_needed = TRUE)
        SerialOut(ComSDC11, "reboot" & CRLF, CRLF, 1, 200)
        SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
        If (returned_value = "Reboot started . . ." & CHR(13)) Then
          modem_reset_needed = FALSE
          returned_value = ""
        EndIf
      Loop  
    EndIf
  #EndIf

  Scan (1, SEC, 3, 0)
    PanelTemp(panel_temperature_c, _60Hz) 
    Battery(battery_voltage) 
  NextScan
    
  SlowSequence  
    Scan(2, MIN, 0, 0)
      'reset our variales so we know we are getting good data everytime          
      modem_apn = ""
      modem_battery_voltage = 0
      modem_current_day_usage = 0
      modem_current_month_usage = 0
      modem_diversity = ""
      modem_ecio = 0
      modem_ipprotocol = ""
      modem_mode = ""
      modem_previous_day_usage = 0
      modem_previous_month_usage = 0
      modem_sdc_address = 0
      modem_state = ""
      returned_value = ""
         
      SerialFlush(ComSDC11) 'clean out any garbage characters that might have come in.        
      SerialOut(ComSDC11, CRLF , "CELL2xx>", 1, 200) 'Send a CRLF and wait CELL2xx prompt before continueing on. 
      SerialOut(ComSDC11, "show apn" & CRLF, CRLF, 1, 200) 'Query for the modems current APN setting.
      SerialIn(modem_apn, ComSDC11, 100, CHR(13), 1000)

      SerialFlush(ComSDC11)
      SerialOut(COMSDC11, "show rssi" & CRLF, CRLF, 1, 200) 'Query for the modem's serial port baud rate
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_rssi = returned_value 'convert string to numberic value
      
      SerialFlush(ComSDC11)
      SerialOut(COMSDC11, "show rsrp" & CRLF, CRLF, 1, 200) 'Query for the modem's serial port baud rate
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_rsrp = returned_value 
      
      SerialFlush(ComSDC11)
      SerialOut(COMSDC11, "show ecio" & CRLF, CRLF, 1, 200) 'Query for the modem's serial port baud rate
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_ecio = returned_value
    
      SerialFlush(ComSDC11)
      SerialOut(COMSDC11, "show rsrq" & CRLF, CRLF, 1, 200) 'Query for the modem's serial port baud rate
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_rsrq = returned_value

      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show diversity" & CRLF, CRLF, 1, 200) 'Query for the modems current APN setting.
      SerialIn(modem_diversity, ComSDC11, 100, CHR(13), 1000)

      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show ipprotocol" & CRLF, CRLF, 1, 200) 'Query for the modems current APN setting.
      SerialIn(modem_ipprotocol, ComSDC11, 100, CHR(13), 1000)

      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show sdc" & CRLF, CRLF, 1, 200) 'Query for the modems current APN setting.
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_sdc_address = returned_value

      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show mode" & CRLF, CRLF, 1, 200) 'Query for the modems current APN setting.
      SerialIn(modem_mode, ComSDC11, 100, CHR(13), 1000)
      
      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show state" & CRLF, CRLF, 1, 200) 'Query for the modems current APN setting.
      SerialIn(modem_state, ComSDC11, 100, CHR(13), 1000)
      
      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show usage today" & CRLF, CRLF, 1, 200) 'Query for today's cellular data usage
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_current_day_usage = returned_value
       
      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show usage yesterday" & CRLF, CRLF, 1, 200) 'Query for yesterday's cellular data usage
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_previous_day_usage = returned_value
      
      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show usage month" & CRLF, CRLF, 1, 200) 'Query for this month's cellular data usage
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_current_month_usage = returned_value
       
      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show usage lastmonth" & CRLF, CRLF, 1, 200) 'Query for last month's cellular data usage
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_previous_month_usage = returned_value
      
      SerialFlush(ComSDC11)
      SerialOut(ComSDC11, "show bat" & CRLF, CRLF, 1, 200) 'Query for last month's cellular data usage
      SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000)
      modem_battery_voltage = returned_value
    
      CallTable CELL_DIAGNOSTICS
    NextScan
  EndSequence
  
  SlowSequence
    Do
      Delay(1, 5, Sec)
      
      If(TimeIsBetween(10, 58, 60, Min) AND modem_is_off <> TRUE) Then 'make sure the modem is off at 10 minutes into the hour until 58 minutes into the hour
        Do Until (modem_is_off = TRUE)
          SerialFlush(ComSDC11) 'clean out any garbage characters that might have come in.
          SerialOut(ComSDC11, CRLF , "CELL2xx>", 1, 200) 'Send a CRLF and wait CELL2xx prompt before continueing on. 
          SerialOut(ComSDC11, "deep sleep" & CRLF, CRLF, 1, 200) 'Query for the modems current APN setting.
          SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000) 
          If(returned_value = "Sleep enabled." & CHR(13)) Then
            modem_is_off = TRUE
            returned_value = ""
          EndIf 
        Loop
      EndIf
      
      If((TimeIsBetween(0, 10, 60, Min) OR TimeIsBetween(58, 60, 60, Min)) AND modem_is_off <> FALSE) Then 'turn the modem on at the top of the hour in a 10 minute windows
        Do Until (modem_is_off = FALSE)
          SerialFlush(ComSDC11) 'clean out any garbage characters that might have come in.
          SerialOut(ComSDC11, CRLF , "CELL2xx>", 1, 200) 'Send a CRLF and wait CELL2xx prompt before continueing on. 
          SerialOut(ComSDC11, "wakeup" & CRLF, CRLF, 1, 200) 'Query for the modems current APN setting.
          SerialIn(returned_value, ComSDC11, 100, CHR(13), 1000) 
          If(returned_value = "Sleep disabled." & CHR(13)) Then
            modem_is_off = FALSE
            returned_value = ""
          EndIf 
        Loop
      EndIf
    Loop
  EndSequence
EndProg