Cellular library for MTS Socket Modem Arduino Shield devices from Multi-Tech Systems

Dependents:   mtsas mtsas mtsas mtsas

Cellular/UIP.h

Committer:
Mike Fiore
Date:
2014-05-21
Revision:
7:0ee8e69a3e9c
Parent:
3:04046eebaef5
Child:
8:2d7259d244d1

File content as of revision 7:0ee8e69a3e9c:

#ifndef UIP_H
#define UIP_H

#include <string>
#include <vector>

#include "MTSBufferedIO.h"
#include "Cellular.h"

namespace mts
{

/** This is a class for communicating with a Multi-Tech Systems SocketModem iCell. The
* SocketModem iCell is a family of carrier certified embedded cellular radio modules with
* a common hardware footprint and AT command set for built in IP-stack functionality.
* This class supports three main types of cellular radio interactions including:
* configuration and status AT command processing, SMS processing, and TCP Socket
* data connections. It should be noted that the radio can not process commands or
* SMS messages while having an open data connection at the same time. The concurrent
* capability may be added in a future release. This class also inherits from IPStack
* providing a common set of commands for communication devices that have an onboard
* IP Stack. It is also integrated with the standard mbed Sockets package and can therefore
* be used seamlessly with clients and services built on top of this interface already within
* the mbed library.
*
* All of the following examples use the Pin Names for the Freedom KL46Z board coupled with
* the SocketModem Shield Arduino compatible board. Please chage Pin Names accordingly to
* match your hardware configuration. It also assumes the use of RTS/CTS hardware handshaking
* using GPIOs. To disable this you will need to change settings on the radio module and
* and use the MTSSerial class instead of MTSSerialFlowControl. The default baud rate for the
* cellular radio is 115200 bps.
*/

class UIP : public Cellular
{
public:
    /** This static function is used to create or get a reference to a
    * Cellular object. Cellular uses the singleton pattern, which means
    * that you can only have one existing at a time. The first time you
    * call getInstance this method creates a new uninitialized Cellular
    * object and returns it. All future calls to this method will return
    * a reference to the instance created during the first call. Note that
    * you must call init on the returned instance before mnaking any other
    * calls. If using this class's bindings to any of the Socket package
    * classes like TCPSocketConnection, you must call this method and the
    * init method on the returned object first, before even creating the
    * other objects.
    *
    * @returns a reference to the single Cellular obect that has been created.
    */
    UIP();

    /** Destructs a Cellular object and frees all related resources.
    */
    ~UIP();

    virtual bool init(MTSBufferedIO* io);
    
    /**
    *
    */
    bool configureSignals(PinName DCD = NC, PinName DTR = NC, PinName RESET = NC);

    // Wifi connection based commands derived from CommInterface.h
    virtual bool connect();
    virtual void disconnect();
    virtual bool isConnected();
    virtual void reset();

    // TCP and UDP Socket related commands
    // For behavior of the following methods refer to IPStack.h documentation
    virtual bool bind(unsigned int port);
    virtual bool open(const std::string& address, unsigned int port, Mode mode);
    virtual bool isOpen();
    virtual bool close();
    virtual int read(char* data, int max, int timeout = -1);
    virtual int write(const char* data, int length, int timeout = -1);
    virtual unsigned int readable();
    virtual unsigned int writeable();
    virtual bool ping(const std::string& address = "8.8.8.8");
    virtual std::string getDeviceIP();
    virtual bool setDeviceIP(std::string address = "DHCP");

    //Cellular functions that derive from Cellular.h
    virtual std::string sendCommand(const std::string& command, unsigned int timeoutMillis, char esc = CR);
    virtual Code sendBasicCommand(const std::string& command, unsigned int timeoutMillis, char esc = CR);
    virtual Code setApn(const std::string& apn);
    virtual Code setDns(const std::string& primary, const std::string& secondary = "0.0.0.0");

    /** A method for configuring command ehco capability on the radio. This command
    * sets whether sent characters are echoed back from the radio, in which case you
    * will receive back every command you send.
    *
    * @param state if true echo will be turned off, otherwise it will be turned on.
    * @returns the standard AT Code enumeration.
    */
    Code echo(bool state);

    /** This method can be used to trade socket functionality for performance.
    * In order to enable a socket connection to be closed by the client side programtically,
    * this class must process all read and write data on the socket to guard the special
    * escape character used to close an open socket connection. It is recommened that you
    * use the default of true unless the overhead of these operations is too significant.
    *
    * @param enabled set to true if you want the socket closeable, otherwise false. The default
    * is true.
    * @returns the standard AT Code enumeration.
    */
    Code setSocketCloseable(bool enabled = true);  //ETX closes socket (ETX and DLE in payload are escaped with DLE)

private:
    DigitalIn* dcd; //Maps to the radio's dcd signal
    DigitalOut* dtr; //Maps to the radio's dtr signal
    DigitalOut* resetLine; //Maps to the radio's reset signal 
};

}

#endif