int main(void)
{
// sets up the wiringPi library
if (wiringPiSetup () < 0) {
fprintf (stderr, "Unable to setup wiringPi: %s\n", strerror (errno));
return 1;
}
// set Pin 17/0 generate an interrupt on high-to-low transitions
// and attach myInterrupt() to the interrupt
if ( wiringPiISR (WIND_PIN, INT_EDGE_FALLING, &myInterrupt) < 0 ) {
fprintf (stderr, "Unable to setup ISR: %s\n", strerror (errno));
return 1;
}
// display counter value every second.
while ( 1 ) {
/* Wind is 1.492 mph per event */
printf(" Wind Speed: % 4.2f\n", eventCounter * 1.492 );
printf(" Wind Direction: % 4.2f\n", get_wind_direction() );
eventCounter = 0;
delay( 1000 ); // wait 1 second
}
return 0;
}
//
// This is invoked for every seconds tick
//
void seconds_Tick()
{
// Take a speed and direction reading every second for 2 minute average
if(++seconds_2m > 119) seconds_2m = 0;
// Calc the wind speed and direction every second for 120 second to get 2 minute average
float currentSpeed = get_wind_speed();
//float currentSpeed = random(5); //For testing
int currentDirection = get_wind_direction();
windspdavg[seconds_2m] = (int)currentSpeed;
winddiravg[seconds_2m] = currentDirection;
//if(seconds_2m % 10 == 0) displayArrays(); //For testing
//Check to see if this is a gust for the minute
if(currentSpeed > windgust_10m[minutes_10m])
{
windgust_10m[minutes_10m] = currentSpeed;
windgustdirection_10m[minutes_10m] = currentDirection;
}
//Check to see if this is a gust for the day
if(currentSpeed > windgustmph)
{
windgustmph = currentSpeed;
windgustdir = currentDirection;
}
//
// A cloudTimer is used to schedule cloud updates and data print out.
//
cloudTimer++;
if (cloudTimer == cloud_update_rate_in_seconds)
{
//
// Get readings from all sensors. This will update the global
// weather variables.
//
getWeather();
//
// NOTE: Doing all cloud operations within one processing
// loop will result in a timeout/reset of the Photon.
//
// So they are staged by the cloud scheduler.
//
cloudScheduler();
// Reset the interval counter
cloudTimer = 0;
}
}
void compass_handler(CompassHeadingData data) {
CompassStatus status = data.compass_status;
int heading;
char degrees[6];
char compass[2];
switch(status) {
case CompassStatusCalibrated:
case CompassStatusCalibrating:
heading = TRIGANGLE_TO_DEG(TRIG_MAX_ANGLE - (int)data.magnetic_heading);
strcpy(compass, get_wind_direction((TRIGANGLE_TO_DEG((int)data.magnetic_heading) + 180) % 360));
snprintf(degrees, sizeof(degrees), "%s", get_wind_direction_text((heading + 180) % 360));
set_compass_layer_text(compass);
set_degrees_layer_text(degrees);
break;
case CompassStatusUnavailable:
case CompassStatusDataInvalid:
set_compass_layer_text("N");
set_degrees_layer_text("NA");
break;
}
}
void getWeather()
{
// Measure Relative Humidity from the HTU21D or Si7021
humidity = sensor.getRH();
// Measure Temperature from the HTU21D or Si7021
tempf = sensor.getTempF();
//
// Temperature is measured every time RH is requested.
// It is faster, therefore, to read it from previous RH
// measurement with getTemp() instead with readTemp()
//
// Measure the Barometer temperature in F from the MPL3115A2
baroTemp = sensor.readBaroTempF();
// Measure Pressure from the MPL3115A2
pascals = sensor.readPressure();
// If in altitude mode, you can get a reading in feet with this line:
//altf = sensor.readAltitudeFt();
getSoilTemp(); // Read the DS18B20 waterproof temp sensor
getSoilMositure(); // Read the soil moisture sensor
// Calc winddir
winddir = get_wind_direction();
// Calc windspeed
windspeedmph = get_wind_speed();
// Calc windgustmph
// Calc windgustdir
// Report the largest windgust today
windgustmph = 0;
windgustdir = 0;
// Calc windspdmph_avg2m
float temp = 0;
for(int i = 0 ; i < 120 ; i++) {
temp += windspdavg[i];
}
temp /= 120.0;
windspdmph_avg2m = temp;
// Calc winddir_avg2m
temp = 0; // Can't use winddir_avg2m because it's an int
for(int i = 0 ; i < 120 ; i++) {
temp += winddiravg[i];
}
temp /= 120;
winddir_avg2m = temp;
//
// Calc windgustmph_10m
// Calc windgustdir_10m
// Find the largest windgust in the last 10 minutes
//
windgustmph_10m = 0;
windgustdir_10m = 0;
// Step through the 10 minutes
for(int i = 0; i < 10 ; i++)
{
if(windgust_10m[i] > windgustmph_10m)
{
windgustmph_10m = windgust_10m[i];
windgustdir_10m = windgustdirection_10m[i];
}
}
//
// Total rainfall for the day is calculated within the interrupt
// Calculate amount of rainfall for the last 60 minutes
//
rainin = 0;
for(int i = 0 ; i < 60 ; i++) {
rainin += rainHour[i];
}
}
