Diff: main.cpp

Revision:

0:7e56962875b0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Jan 25 08:56:42 2022 +0000
@@ -0,0 +1,198 @@
+/* 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 "MQTTmbed.h"
+#include "MQTTClientMbedOs.h"
+#include "Sht31.h"
+#define MQTT_MAX_PACKET_SIZE 400 
+#define MQTT_MAX_PAYLOAD_SIZE 300
+
+Sht31 temp_sensor(I2C_SDA, I2C_SCL);
+int temp = 1;
+AnalogIn my_adc(D11);
+float t;
+float h;
+void ibm_cloud_demo(NetworkInterface *net)
+{
+    TCPSocket socket;
+    MQTTClient client(&socket);
+     SocketAddress a;
+    char* hostname = "dev.rightech.io";
+    net->gethostbyname(hostname, &a);
+    int port = 1883;
+    a.set_port(port);
+     printf("Connecting to %s:%d\r\n", hostname, port);
+    socket.open(net);
+     printf("Opened socket\n\r");
+     int rc = socket.connect(a);
+     if (rc != 0)
+        printf("rc from TCP connect is %d\r\n", rc);
+     printf("Connected socket\n\r");
+     MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
+     data.MQTTVersion = 3;
+     data.clientID.cstring = "mqtt-graf2114-ylbl1u";
+     data.username.cstring = "Qwerty1";
+     data.password.cstring = "Qwerty1";
+     //{clientId:"Qwerty1",userName:"Qwerty2",password:"Qwerty3"}
+    if ((rc = client.connect(data)) != 0)
+    printf("rc from MQTT connect is %d\r\n", rc);
+    t = temp_sensor.readTemperature();
+    MQTT::Message message;
+    char buf[MQTT_MAX_PAYLOAD_SIZE];   
+    sprintf(buf,"%d", t);
+    message.qos = MQTT::QOS0;
+    message.retained = false;
+    message.dup = false;
+    message.payload = (void*)buf;
+    message.payloadlen = strlen(buf);
+    char* topic = "temp";
+    if( (message.payloadlen + strlen(topic)+1) >= MQTT_MAX_PACKET_SIZE )
+    printf("message too long!\r\n");
+    rc = client.publish(topic, message);
+    
+    h = temp_sensor.readHumidity();  
+    sprintf(buf,"%f", h);
+    message.qos = MQTT::QOS0;
+    message.retained = false;
+    message.dup = false;
+    message.payload = (void*)buf;
+    message.payloadlen = strlen(buf);
+    char* topic = "uhum";
+    if( (message.payloadlen + strlen(topic)+1) >= MQTT_MAX_PACKET_SIZE )
+    printf("message too long!\r\n");
+    rc = client.publish(topic, message);
+     
+    sprintf(buf,"%f"(my_adc.read()*100);
+    message.qos = MQTT::QOS0;
+    message.retained = false;
+    message.dup = false;
+    message.payload = (void*)buf;
+    message.payloadlen = strlen(buf);
+    char* topic = "hum";
+    if( (message.payloadlen + strlen(topic)+1) >= MQTT_MAX_PACKET_SIZE )
+    printf("message too long!\r\n");
+    rc = client.publish(topic, message);
+
+    return; 
+}
+
+
+WiFiInterface *wifi;
+
+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_demo(WiFiInterface *wifi)
+{
+    WiFiAccessPoint *ap;
+
+    printf("Scan:\n");
+
+    int count = wifi->scan(NULL,0);
+
+    if (count <= 0) {
+        printf("scan() failed with return value: %d\n", count);
+        return 0;
+    }
+
+    /* Limit number of network arbitrary to 15 */
+    count = count < 15 ? count : 15;
+
+    ap = new WiFiAccessPoint[count];
+    count = wifi->scan(ap, count);
+
+    if (count <= 0) {
+        printf("scan() failed with return value: %d\n", count);
+        return 0;
+    }
+
+    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());
+    }
+    printf("%d networks available.\n", count);
+
+    delete[] ap;
+    return count;
+}
+
+int main()
+{
+    printf("WiFi example\n");
+
+#ifdef MBED_MAJOR_VERSION
+    printf("Mbed OS version %d.%d.%d\n\n", MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION);
+#endif
+
+    wifi = WiFiInterface::get_default_instance();
+    if (!wifi) {
+        printf("ERROR: No WiFiInterface found.\n");
+        return -1;
+    }
+
+    int count = scan_demo(wifi);
+    if (count == 0) {
+        printf("No WIFI APs 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: %d\n", ret);
+        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());
+    while (1)
+    {
+   if (temp<2) {
+    ibm_cloud_demo(wifi);
+    wait_ms(1000);
+    temp++;
+    } 
+    else 
+        while(1)
+            {
+                relay = !relay;
+                wait_ms(500);
+                }
+    }
+    printf("Done\n\n");
+}