int main()
{
printf("Starting the demo\n");
struct pico_mqtt* mqtt = pico_mqtt_create();
if(pico_mqtt_set_client_id( mqtt, "12345"))
{
printf("An error occured while setting the client_id\n");
}
if(pico_mqtt_set_username( mqtt, "my_name"))
{
printf("An error occured while setting the username\n");
}
if(pico_mqtt_set_password( mqtt, "secret"))
{
printf("An error occured while setting the password\n");
}
if(pico_mqtt_connect(mqtt,"localhost", "1883", 10))
{
printf("An error occured during connecting\n");
}
sleep(5);
pico_mqtt_destroy( mqtt );
return 0;
}
/**
* @brief: the start of the MQTT client program
* @usage: To publish "garden/humidity" data: ./PROG_NAME [yourName] random
* To consume "garden/humidity" data: ./PROG_NAME [yourName] interactive
*/
int main( int argc, char* argv[] )
{
struct pico_mqtt* mqtt = NULL;
program_t activeProgram = program_invalid;
char* sensor_name = argv[1];
char client_id[128];
/***************************************************************************
* Parse program arguments
**************************************************************************/
if (argc != 3)
{
help(argv[0]);
return -1;
}
if (strcmp(argv[2],"random") == 0)
{
activeProgram = program_simple_humidity_sensor;
}
else if (strcmp(argv[2], "interactive") == 0)
{
activeProgram = program_interactive_humidity_sensor;
}
else
{
help(argv[0]);
return -1;
}
// Install signal handler on ^C
if (signal(SIGINT, sig_handler) == SIG_ERR)
{
printf("\ncan't catch SIGINT\n");
}
/***************************************************************************
* [MQTT] Connect this client to the MQTT server on the network
**************************************************************************/
printf("Starting the MQTT client\n");
mqtt = pico_mqtt_create();
strncpy(client_id, "sensor", 128);
strncat(client_id, sensor_name, 128);
if(pico_mqtt_set_client_id( mqtt, client_id))
{
printf("An error occurred while setting the client_id\n");
}
if(pico_mqtt_set_username( mqtt, USER))
{
printf("An error occurred while setting the username\n");
}
if(pico_mqtt_set_password( mqtt, PWD))
{
printf("An error occured while setting the password\n");
}
if(pico_mqtt_connect(mqtt, HOSTNAME, PORT, 10))
{
printf("An error occured during connecting\n");
}
printf("clientId: %s successfully connected to server %s:%s\n", client_id, HOSTNAME, PORT);
/***************************************************************************
* [MQTT] Start an MQTT program (while loop)
**************************************************************************/
switch(activeProgram)
{
case program_simple_humidity_sensor:
printf("Starting the simple humidity sensor\n");
//This will start an endless loop
main_humidity_sensor( mqtt, sensor_name );
break;
case program_interactive_humidity_sensor:
printf("Starting the interactive humidity sensor\n");
// This will read humidity sensor data, print it and publish sprinkler data
main_better_humidity_sensor( mqtt, sensor_name );
break;
default:
// An error occurred
break;
}
/***************************************************************************
* [MQTT] Break connection and clear resources
**************************************************************************/
pico_mqtt_disconnect( mqtt );
pico_mqtt_destroy( mqtt );
return 0;
}