File content as of revision 0:5738799d7a56:

/* WiFi Example
 * Copyright (c) 2018 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"
#include <DigitalIn.h>
 
#define WIFI_IDW0XX1    2

#define TS_DEVICE "StmWifi" //mettre le nom de votre canal TS
#define thingspeak_APIkey_write "SOSW9VB0YR0D0GF8" //mettre la clé d'écriture de votre canal TS
#define thingspeak_APIkey_read "YEBSWYV532L13T23" //mettre la clé lecture de votre canal TS


#if (defined(TARGET_DISCO_L475VG_IOT01A) || defined(TARGET_DISCO_F413ZH))
#include "ISM43362Interface.h"

ISM43362Interface wifi(MBED_CONF_APP_WIFI_SPI_MOSI, MBED_CONF_APP_WIFI_SPI_MISO, MBED_CONF_APP_WIFI_SPI_SCLK, MBED_CONF_APP_WIFI_SPI_NSS, MBED_CONF_APP_WIFI_RESET, MBED_CONF_APP_WIFI_DATAREADY, MBED_CONF_APP_WIFI_WAKEUP, false);

#else // External WiFi modules

#if MBED_CONF_APP_WIFI_SHIELD == WIFI_IDW0XX1
#include "SpwfSAInterface.h"
SpwfSAInterface wifi(MBED_CONF_APP_WIFI_TX, MBED_CONF_APP_WIFI_RX);
#endif // MBED_CONF_APP_WIFI_SHIELD == WIFI_IDW0XX1

#endif
char hostName[] = "8406e1ca8b3e.ngrok.io";
char cardId[] = "carte_9";
char sensorId[256];
DigitalIn sensorIn(D8);

int sensorState = 0;
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";
    }
}

int scan_wifi(WiFiInterface *wifi)
{
    WiFiAccessPoint *ap;

    printf("Scan:\n");

    int count = wifi->scan(NULL,0);
    printf("%d networks available.\n", count);

    /* 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\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());
    }

    delete[] ap;
    return count;
}
void http_demo(NetworkInterface *net)
{
    TCPSocket socket;
    nsapi_error_t response;

    printf("Sending HTTP request to ngrok.io...\n");

    // Open a socket on the network interface, and create a TCP connection to www.arm.com
    socket.open(net);
    response = socket.connect(hostName, 80);
    if(0 != response) {
        printf("Error connecting: %d\n", response);
        socket.close();
        return;
    }

    // Send a simple http request
    char sbuffer[256];
    sprintf(sbuffer, "GET /api/v1/sensor/identify HTTP/1.1\r\nHost: %s\r\n\r\n", hostName);
    nsapi_size_t size = strlen(sbuffer);
    response = 0;
    while(size)
    {
        response = socket.send(sbuffer+response, size);
        if (response < 0) {
            printf("Error sending data: %d\n", response);
            socket.close();
            return;
        } else {
            size -= response;
            // Check if entire message was sent or not
            printf("sent %d [%.*s]\n", response, strstr(sbuffer, "\r\n")-sbuffer, sbuffer);
        }
    }

    // Recieve a simple http response and print out the response line
    char rbuffer[64];
    response = socket.recv(rbuffer, sizeof rbuffer);
    if (response < 0) {
        printf("Error receiving data: %d\n", response);
    } else {
        printf("recv %d [%.*s]\n", response, strstr(rbuffer, "\r\n")-rbuffer, rbuffer);
    }

    // Close the socket to return its memory and bring down the network interface
    socket.close();
}
void authentificate(NetworkInterface *net){
    TCPSocket socket;
    nsapi_error_t response;

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

    // Open a socket on the network interface, and create a TCP connection to www.arm.com
    socket.open(net);
    response = socket.connect(hostName, 80);
    if(0 != response) {
        printf("Error connecting: %d\n", response);
        socket.close();
        return;
    }

    // Send a simple http request
    char sbuffer[256];
    sprintf(sbuffer, "GET /api/v1/sensor/identify?sensorId=%s HTTP/1.1\r\nHost: %s\r\n\r\n", cardId,hostName);
    nsapi_size_t size = strlen(sbuffer);
    response = 0;
    while(size)
    {
        response = socket.send(sbuffer+response, size);
        if (response < 0) {
            printf("Error sending data: %d\n", response);
            socket.close();
            return;
        } else {
            size -= response;
            // Check if entire message was sent or not
            printf("sent %d [%.*s]\n", response, strstr(sbuffer, "\r\n")-sbuffer, sbuffer);
        }
    }

    // Recieve a simple http response and print out the response line
    char rbuffer[64];
    response = socket.recv(rbuffer, sizeof rbuffer);
    if (response < 0) {
        printf("Error receiving data: %d\n", response);
    } else {
        printf("recv %d [%.*s]\n", response, strstr(rbuffer, "\r\n")-rbuffer, rbuffer);
    }

    // Close the socket to return its memory and bring down the network interface
    socket.close();
}
void updateStatus(NetworkInterface *net){
    TCPSocket socket;
    nsapi_error_t response;

    printf("Sending HTTP request to ngrok.io...\n");

    // Open a socket on the network interface, and create a TCP connection to www.arm.com
    socket.open(net);
    response = socket.connect(hostName, 80);
    if(0 != response) {
        printf("Error connecting: %d\n", response);
        socket.close();
        return;
    }

    // Send a simple http request
    char sbuffer[256];
    if(!sensorState){
        sprintf(sbuffer, "GET /api/v1/sensor/update?sensorId=%s&state=1 HTTP/1.1\r\nHost: %s\r\n\r\n", cardId, hostName);
    } else {
        sprintf(sbuffer, "GET /api/v1/sensor/update?sensorId=%s&state= HTTP/1.1\r\nHost: %s\r\n\r\n", cardId , hostName);
        
    }
    // sprintf(sbuffer, "GET /api/v1/sensor/update?sensorId=%s&state=%d HTTP/1.1\r\nHost: %s\r\n\r\n", cardId, sensorState, hostName);
    nsapi_size_t size = strlen(sbuffer);
    response = 0;
    while(size)
    {
        response = socket.send(sbuffer+response, size);
        if (response < 0) {
            printf("Error sending data: %d\n", response);
            socket.close();
            return;
        } else {
            size -= response;
            // Check if entire message was sent or not
            printf("sent %d [%.*s]\n", response, strstr(sbuffer, "\r\n")-sbuffer, sbuffer);
        }
    }

    // Recieve a simple http response and print out the response line
    char rbuffer[64];
    response = socket.recv(rbuffer, sizeof rbuffer);
    if (response < 0) {
        printf("Error receiving data: %d\n", response);
    } else {
        printf("recv %d [%.*s]\n", response, strstr(rbuffer, "\r\n")-rbuffer, rbuffer);
    }

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

int main()
{   
    int previousState;
    int count = 0;

    printf("WiFi connect attempt\n\n");
    count = scan_wifi(&wifi);
    if (count == 0) {
        printf("No WIFI APNs found - can't continue further.\n");
        //return -1;
    }
    
    
    printf("\nConnecting to %s...\n", MBED_CONF_APP_WIFI_SSID);
    int ret = wifi.connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, NSAPI_SECURITY_WPA_WPA2);
    if (ret != 0) {
        printf("\nConnection error\n");
        return -1;
    }
    printf("Success\n\n");
    printf("MAC: %s\n", wifi.get_mac_address());
    printf("IP: %s\n", wifi.get_ip_address());
    printf("Netmask: %s\n", wifi.get_netmask());
    printf("Gateway: %s\n", wifi.get_gateway());
    printf("RSSI: %d\n\n", wifi.get_rssi());

    http_demo(&wifi);
    authentificate(&wifi);
    sensorState =  sensorIn.read();
    updateStatus(&wifi);
    while(true){
        previousState = sensorState;
        sensorState =  sensorIn.read();
        if(previousState != sensorState){
            printf("Sensor = %d\n",sensorState);
            updateStatus(&wifi);
        }
        // wait(1.0); 
        //printf("Sensor %s", digitalRead(9));
    }
    wifi.disconnect();
}