File content as of revision 11:bad115ba016c:

/* WiFi Example
 * Copyright (c) 2016 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "mbed.h"
#include "TCPSocket.h"

#if TARGET_UBLOX_EVK_ODIN_W2
#include "OdinWiFiInterface.h"
OdinWiFiInterface wifi;
#else
#if !TARGET_FF_ARDUINO
#error [NOT_SUPPORTED] Only Arduino form factor devices are supported at this time
#endif
#include "ESP8266Interface.h"
ESP8266Interface wifi(D1, D0);
#endif

DigitalOut led_r(PE_0);
DigitalOut led_b(PB_8);

DigitalIn sw_0(PF_2);
DigitalIn sw_1(PB_6);

Serial device(PD_8, PD_9);  // tx(p28), rx(p27)

const char *sec2str(nsapi_security_t sec)
{
    switch (sec) {
        case NSAPI_SECURITY_NONE:
            return "None";
        case NSAPI_SECURITY_WEP:
            return "WEP";
        case NSAPI_SECURITY_WPA:
            return "WPA";
        case NSAPI_SECURITY_WPA2:
            return "WPA2";
        case NSAPI_SECURITY_WPA_WPA2:
            return "WPA/WPA2";
        case NSAPI_SECURITY_UNKNOWN:
        default:
            return "Unknown";
    }
}

void scan_demo(WiFiInterface *wifi)
{
    WiFiAccessPoint *ap;

    printf("Scan:\r\n");

    int count = wifi->scan(NULL,0);

    /* Limit number of network arbitrary to 15 */
    count = count < 15 ? count : 15;

    ap = new WiFiAccessPoint[count];
    count = wifi->scan(ap, count);
    for (int i = 0; i < count; i++)
    {
        printf("Network: %s secured: %s BSSID: %hhX:%hhX:%hhX:%hhx:%hhx:%hhx RSSI: %hhd Ch: %hhd\r\n", ap[i].get_ssid(),
               sec2str(ap[i].get_security()), ap[i].get_bssid()[0], ap[i].get_bssid()[1], ap[i].get_bssid()[2],
               ap[i].get_bssid()[3], ap[i].get_bssid()[4], ap[i].get_bssid()[5], ap[i].get_rssi(), ap[i].get_channel());
    }
    printf("%d networks available.\r\n", count);

    delete[] ap;
}

void http_demo(NetworkInterface *net)
{
    TCPSocket socket;

    printf("Sending HTTP request to flashair...\r\n");

    // Open a socket on the network interface, and create a TCP connection to www.arm.com
    socket.open(net);
    socket.connect("flashair", 80);

    // Send a simple http request
    char sbuffer[] = "GET /test.txt HTTP/1.1\r\nHost: flashair\r\nConnection: Keep-Alive\r\n\r\n";

    int scount = socket.send(sbuffer, sizeof sbuffer-1);
    printf("sent %d [%.*s]\r\n", scount, strstr(sbuffer, "\r\n")-sbuffer, sbuffer);
    printf("%s\r\n\r\n", sbuffer);

    // Recieve a simple http response and print out the response line
    char rbuffer[400];
    int rcount = socket.recv(rbuffer, sizeof rbuffer);
    printf("recv %d [%.*s]\r\n", rcount, strstr(rbuffer, "\r\n")-rbuffer, rbuffer);
   
    //printf("test\r\n");
    //printf("strstr(rbuffer, text/plain):%d\r\n",strstr(rbuffer, "text/plain"));
    //printf("strstr(rbuffer, text/plain)-rb:%d\r\n",strstr(rbuffer, "text/plain")-rbuffer);
    // printf("%.*s\r\n", strstr(rbuffer, "text/plain")-rbuffer, rbuffer);
    printf("%s\r\n", strstr(rbuffer, "text/plain")+10);
    // printf("%s\r\n", rbuffer);
    //device.printf("%s\r\n", rbuffer);

    /* Text Print */
    device.printf("* pomera printer *");

    device.printf("%s\r\n", strstr(rbuffer, "text/plain")+10);
    device.printf("\r\r\r\r\r\r");      // Line Feed x 6

    // Close the socket to return its memory and bring down the network interface
    socket.close();
}

int main()
{
    // LED & SW init
    led_r=0;
    led_b=1;
    sw_0.mode(PullUp);
    sw_1.mode(PullUp);

    printf("WiFi example\r\n\r\n");

    // scan_demo(&wifi);

    printf("\r\nConnecting...\r\n");
    int ret = wifi.connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, NSAPI_SECURITY_WPA_WPA2);
    if (ret != 0) {
        printf("\r\nConnection error\r\n");
        return -1;
    }
    // Wireless LAN connected
    //while(sw_0){}
    printf("\r\nWireless LAN connected\r\n");
    led_r = 1;
    led_b = 0;
    
    printf("Success\r\n\r\n");
    printf("MAC: %s\r\n", wifi.get_mac_address());
    printf("IP: %s\r\n", wifi.get_ip_address());
    printf("Netmask: %s\r\n", wifi.get_netmask());
    printf("Gateway: %s\r\n", wifi.get_gateway());
    printf("RSSI: %d\r\n\r\n", wifi.get_rssi());

    http_demo(&wifi);

    wifi.disconnect();

    printf("\r\nDone\r\n");
    

}