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/*
* Copyright (C) 2015 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <mraa.hpp>
#include "SensorUtils.hpp"
const int kTriStateAllGpioPin = 214;
const int kArduinoI2cBusNumber = 6;
const int kNonArduinoI2cBusNumber = 1;
bool SensorUtils::initialized = false;
int SensorUtils::i2cBusNumber = -1;
int SensorUtils::getI2cBusNumber() {
init();
return i2cBusNumber;
}
void SensorUtils::init() {
if (!SensorUtils::initialized) {
mraa::Gpio *gpio = nullptr;
try {
gpio = new mraa::Gpio(kTriStateAllGpioPin, true, true);
} catch(...) {}
if (gpio == nullptr) {
i2cBusNumber = kNonArduinoI2cBusNumber;
} else {
delete gpio;
i2cBusNumber = kArduinoI2cBusNumber;
}
SensorUtils::initialized = true;
}
}
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