ardupilot/libraries/AP_LeakDetector/AP_LeakDetector_Digital.cpp

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#include "AP_LeakDetector_Digital.h"
#include <AP_HAL/AP_HAL.h>
extern const AP_HAL::HAL& hal;
AP_LeakDetector_Digital::AP_LeakDetector_Digital(AP_LeakDetector &_leak_detector, AP_LeakDetector::LeakDetector_State &_state) :
AP_LeakDetector_Backend(_leak_detector, _state)
{}
void AP_LeakDetector_Digital::read()
{
if (leak_detector._pin[state.instance] >= 0) {
hal.gpio->pinMode(leak_detector._pin[state.instance], HAL_GPIO_INPUT);
state.status = hal.gpio->read(leak_detector._pin[state.instance]) != leak_detector._default_reading[state.instance];
} else {
state.status = false;
}
}