int main() {
// Create IP connection
IPConnection ipcon;
ipcon_create(&ipcon);
// Create device object
Barometer b;
barometer_create(&b, UID, &ipcon);
// Connect to brickd
if(ipcon_connect(&ipcon, HOST, PORT) < 0) {
fprintf(stderr, "Could not connect\n");
exit(1);
}
// Don't use device before ipcon is connected
// Get threshold callbacks with a debounce time of 10 seconds (10000ms)
barometer_set_debounce_period(&b, 10000);
// Register threshold reached callback to function cb_reached
barometer_register_callback(&b,
BAROMETER_CALLBACK_AIR_PRESSURE_REACHED,
(void *)cb_reached,
NULL);
// Configure threshold for "greater than 1025 mbar" (unit is mbar/1000)
barometer_set_air_pressure_callback_threshold(&b, '>', 1025*1000, 0);
printf("Press key to exit\n");
getchar();
ipcon_destroy(&ipcon);
}
int main(void) {
// Create IP connection
IPConnection ipcon;
ipcon_create(&ipcon);
// Create device object
Barometer b;
barometer_create(&b, UID, &ipcon);
// Connect to brickd
if(ipcon_connect(&ipcon, HOST, PORT) < 0) {
fprintf(stderr, "Could not connect\n");
return 1;
}
// Don't use device before ipcon is connected
// Get current air pressure
int32_t air_pressure;
if(barometer_get_air_pressure(&b, &air_pressure) < 0) {
fprintf(stderr, "Could not get air pressure, probably timeout\n");
return 1;
}
printf("Air Pressure: %f mbar\n", air_pressure/1000.0);
// Get current altitude
int32_t altitude;
if(barometer_get_altitude(&b, &altitude) < 0) {
fprintf(stderr, "Could not get altitude, probably timeout\n");
return 1;
}
printf("Altitude: %f m\n", altitude/100.0);
printf("Press key to exit\n");
getchar();
barometer_destroy(&b);
ipcon_destroy(&ipcon); // Calls ipcon_disconnect internally
return 0;
}