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/*
*
* Copyright (c) 2022 Project CHIP Authors
* All rights reserved.
*
* 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 "SensorManager.h"
#include "AppConfig.h"
#include "AppTask.h"
LOG_MODULE_DECLARE(app, CONFIG_CHIP_APP_LOG_LEVEL);
using namespace chip;
using namespace ::chip::DeviceLayer;
constexpr EndpointId kThermostatEndpoint = 1;
constexpr uint16_t kSensorTimerPeriodMs = 30000; // 30s timer period
constexpr uint16_t kMinTemperatureDelta = 50; // 0.5 degree Celsius
k_timer sSensorTimer;
SensorManager SensorManager::sSensorManager;
constexpr uint16_t kSimulatedReadingFrequency = (60000 / kSensorTimerPeriodMs); // Change Simulated number at each minutes
static int16_t mSimulatedTemp[] = { 2300, 2400, 2800, 2550, 2200, 2125, 2100, 2600, 1800, 2700 };
CHIP_ERROR SensorManager::Init()
{
// Initialize temp sensor timer
k_timer_init(&sSensorTimer, &TimerEventHandler, nullptr);
k_timer_user_data_set(&sSensorTimer, this);
k_timer_start(&sSensorTimer, K_MSEC(kSensorTimerPeriodMs), K_NO_WAIT);
return CHIP_NO_ERROR;
}
void SensorManager::TimerEventHandler(k_timer * timer)
{
AppEvent event;
event.Type = AppEvent::kEventType_Thermostat;
event.TimerEvent.Context = k_timer_user_data_get(timer);
event.Handler = SensorTimerEventHandler;
GetAppTask().PostEvent(&event);
}
void SensorManager::SensorTimerEventHandler(AppEvent * aEvent)
{
int16_t temperature = 0;
static int16_t lastTemperature = 0;
static uint8_t nbOfRepetition = 0;
static uint8_t simulatedIndex = 0;
if (simulatedIndex >= ArraySize(mSimulatedTemp))
{
simulatedIndex = 0;
}
temperature = mSimulatedTemp[simulatedIndex];
nbOfRepetition++;
if (nbOfRepetition >= kSimulatedReadingFrequency)
{
simulatedIndex++;
nbOfRepetition = 0;
}
LOG_INF("Sensor Temp is : %d", temperature);
if ((temperature >= (lastTemperature + kMinTemperatureDelta)) || temperature <= (lastTemperature - kMinTemperatureDelta))
{
lastTemperature = temperature;
PlatformMgr().LockChipStack();
app::Clusters::Thermostat::Attributes::LocalTemperature::Set(kThermostatEndpoint, temperature);
PlatformMgr().UnlockChipStack();
}
// Start next timer to handle temp sensor.
k_timer_start(&sSensorTimer, K_MSEC(kSensorTimerPeriodMs), K_NO_WAIT);
}