![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
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main.cpp
- Committer:
- awali
- Date:
- 2022-01-20
- Revision:
- 100:642bee2ce173
- Parent:
- 91:dab9882e2b49
- Child:
- 101:bea6b4cfedac
File content as of revision 100:642bee2ce173:
/* EXAMPLE */ #include "mbed.h" #include "hcsr04.h" //D12 TRIGGER D11 ECHO HCSR04 sensor(D12, D11); #include "MQTTmbed.h" #include <MQTTClientMbedOs.h> #include <cstdio> #include "mbed.h" #include <LiquidCrystal_I2C.h> // Set the LCD address to 0x27 for a 16 chars and 2 line display LiquidCrystal_I2C lcd(0x4E, 16, 2); int main(int argc, char *argv[]) { /* EXAMPLE */ long distance = sensor.distance(); printf("distance %d \n",distance); // initialize the LCD lcd.begin(); // initialize the LCD lcd.begin(); // Turn on the blacklight and print a message. lcd.backlight(); lcd.print("Hello, world!"); //lcd.printf("Hi mbed World!\n"); printf("Starting IBM MQTT demo:\n"); TCPSocket socket; NetworkInterface *net = NetworkInterface::get_default_instance(); if (!net) { printf("Error! No network inteface found.\n"); return 0; } printf("Connecting to the network...\r\n"); nsapi_size_or_error_t rc = net->connect(); if (rc != 0) { printf("Error! _net->connect() returned: %d\r\n", rc); return -1; } rc = socket.open(net); if (rc != 0) { printf("Error! _socket.open() returned: %d\r\n", rc); return -1; } SocketAddress address; net->gethostbyname("sandbox.rightech.io", &address); address.set_port(1883); printf("Opening connection to remote %s port %d\r\n", address.get_ip_address(), address.get_port()); rc = socket.connect(address); if (rc != 0) { printf("Error! _socket.connect() returned: %d\r\n", rc); return -1; } printf("Connected socket\n"); MQTTClient client(&socket); MQTTPacket_connectData data = MQTTPacket_connectData_initializer; data.MQTTVersion = 3; data.clientID.cstring = "mqtt-rudikrafikov-11r3lh"; data.username.cstring = "1234"; data.password.cstring = "1234"; if ((rc = client.connect(data)) != 0) printf("rc from MQTT connect is %d\r\n", rc); //{clientId:"vali_client_id",userName:"vali_user_name",password:"fkQiW3AJFcM38ED"} MQTT::Message message; char *topic = "temp"; char buf[100]; int temp = 33; int press = 2; int hum = 3; // sprintf(buf, // "{\"d\":{\"ST\":\"Nucleo-IoT-mbed\",\"Temp\":%d,\"Pressure\":" // "%d,\"Humidity\":%d}}", temp, press, hum); // sprintf(buf, // "{\"temperature\": %d}", temp); sprintf(buf, "{\"distance\": %d}", distance); printf("Sending message: \n%s\n", buf); message.qos = MQTT::QOS0; message.retained = false; message.dup = false; message.payload = (void *)buf; message.payloadlen = strlen(buf); rc = client.publish(topic, message); printf("Message sent\n"); printf("Demo concluded successfully \r\n"); return 0; }