// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-

// Sensors are not available in HIL_MODE_ATTITUDE
#if HIL_MODE != HIL_MODE_ATTITUDE

void ReadSCP1000(void) {}

static void init_barometer(void)
{
    barometer.calibrate(mavlink_delay);
    ahrs.set_barometer(&barometer);
    gcs_send_text_P(SEVERITY_LOW, PSTR("barometer calibration complete"));
}

// filter altitude from the barometer with a 0.3 low pass
// filter
static LowPassFilterInt32 altitude_filter(0.3);

// read the barometer and return the updated altitude in centimeters
// above the calibration altitude
static int32_t read_barometer(void)
{
	barometer.read();
    return altitude_filter.apply(((int32_t)barometer.get_altitude() * 100.0));
}

// in M/S * 100
static void read_airspeed(void)
{
	#if GPS_PROTOCOL != GPS_PROTOCOL_IMU	// Xplane will supply the airspeed
		if (g.airspeed_offset == 0) {
            // runtime enabling of airspeed, we need to do instant
            // calibration before we can use it. This isn't as
            // accurate as the 50 point average in zero_airspeed(),
            // but it is better than using it uncalibrated
            airspeed_raw = pitot_analog_source.read();
            g.airspeed_offset.set_and_save(airspeed_raw);
		}
		airspeed_raw 		= (pitot_analog_source.read() * 0.1) + (airspeed_raw * 0.9);
		airspeed_pressure 	= max((airspeed_raw - g.airspeed_offset), 0);
		airspeed 			= sqrt(airspeed_pressure * g.airspeed_ratio) * 100;
	#endif

	calc_airspeed_errors();
}

static void zero_airspeed(void)
{
    float sum = 0;
    int c;
	airspeed_raw = pitot_analog_source.read();
	for(c = 0; c < 250; c++) {
		delay(2);
		sum += pitot_analog_source.read();
	}
    sum /= c;
	g.airspeed_offset.set_and_save((int16_t)sum);
}

#endif // HIL_MODE != HIL_MODE_ATTITUDE

static void read_battery(void)
{
	if(g.battery_monitoring == 0) {
		battery_voltage1 = 0;
		return;
	}
	
	if(g.battery_monitoring == 3 || g.battery_monitoring == 4) {
        static AP_AnalogSource_Arduino bat_pin(BATTERY_PIN_1);
		battery_voltage1 = BATTERY_VOLTAGE(bat_pin.read_average());
    }
	if(g.battery_monitoring == 4) {
        static AP_AnalogSource_Arduino current_pin(CURRENT_PIN_1);
		current_amps1	 = CURRENT_AMPS(current_pin.read_average());
		current_total1	 += current_amps1 * (float)delta_ms_medium_loop * 0.0002778;				// .0002778 is 1/3600 (conversion to hours)
	}
	
	#if BATTERY_EVENT == ENABLED
		if(battery_voltage1 < LOW_VOLTAGE)	low_battery_event();
		if(g.battery_monitoring == 4 && current_total1 > g.pack_capacity)	low_battery_event();
	#endif
}