File content as of revision 3:85181c1324f2:

#include "mbed.h"
#include "mtsas.h"

int main(){
    //Modify to match your apn if you are using an HSPA radio with a SIM card
    const char APN[] = "";
    
    //Sets the log level to INFO, higher log levels produce more log output.
    //Possible levels: NONE, FATAL, ERROR, WARNING, INFO, DEBUG, TRACE
    MTSLog::setLogLevel(MTSLog::INFO_LEVEL);
    
    //Receive buffer
    char rbuf[4000];
    
    //url strings for HTTP requests, httpbin.org is a public website for fielding test HTTP requests
    string url, base_url = "http://httpbin.org:80", url_get = "/get";
    
    /** STMicro Nucelo F401RE
    * The supported jumper configurations of the MTSAS do not line up with
    * the pin mapping of the Nucleo F401RE. Therefore, the MTSAS serial TX
    * pin (JP8 Pin 2) must be manually jumped to Serial1 RX (Shield pin D2)
    * and the MTSAS serial RX pin (JP9 Pin 2) pin must be manually jumped to
    * Serial1 TX (Shield pin D8).
    * Uncomment the following line to use the STMicro Nuceleo F401RE
    */
    MTSSerialFlowControl* io = new MTSSerialFlowControl(D8, D2, D3, D6);
    
    /** Freescale KL46Z
    * To configure the pins for the Freescale KL46Z board, use configuration B
    * Uncomment the following line to use the Freescale KL46Z board
    */
    //MTSSerialFlowControl* io = new MTSSerialFlowControl(D2, D9, D3, D6);
    
    /** Freescale K64F
    * To configure the pins for the Freescale KL46Z board, use configuration A
    * Uncomment the following line to use the Freescale KL46F board
    */
    //MTSSerialFlowControl* io = new MTSSerialFlowControl(D1, D0, D3, D6);
    
    //Sets the baudrate for communicating with the radio
    io->baud(115200); 
    
    //Initialize radio configurations
    Cellular* radio = CellularFactory::create(io);
    if( ! radio) {
        logFatal("Radio initialization failed");
        return 1;
    }
    radio->configureSignals(D4,D7,RESET);
    Transport::setTransport(radio);
    
    //Set up HTTP interface
    HTTPClient* http = new HTTPClient();
    HTTPText* receive = new HTTPText(rbuf, 4000);
    
    //Set radio APN
    for (int i = 0; i < 10; i++) {
        if (i >= 10) {
            logError("Failed to set APN to %s", APN);
        }
        if (radio->setApn(APN) == MTS_SUCCESS) {
            logInfo("Successfully set APN to %s", APN);
            break;
        } else {
            wait(1);
        }
    }
    
    //Establish PPP link
    for (int i = 0; i < 10; i++) {
        if (i >= 10) {
            logError("Failed to establish PPP link");
        }
        if (radio->connect() == true) {
            logInfo("Successfully established PPP link");
            break;
        } else {
            wait(1);
        }
    }
    
    //Format HTTP Get request
    url = base_url + url_get;
    
    //Send HTTP GET request
    for (int i = 0; i < 10; i++) {
        if(http->get(url.c_str(), receive, 5000) == HTTP_OK) {
            http->get(url.c_str(), receive, 5000);
            logInfo("HTTP get succeeded\n%s",  rbuf);
            break;
        }
        if (i >= 10) {
            logError("HTTP GET failed");
        }
        wait(1);
    }
    
    //Disconnect PPP link
    radio->disconnect();
    
    logInfo("End of example code\n");
    return 0;
}