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Add SHT3x sensor to i2c devices

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This commit is contained in:
Simon Stürz 2021-09-05 12:25:47 +02:00
parent f966532b57
commit f7097a623d
5 changed files with 217 additions and 2 deletions
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6
i2cdevices/i2cdevices.pro
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@ -3,10 +3,12 @@ include(../plugins.pri)
HEADERS += \
integrationplugini2cdevices.h \
ads1115channel.h \
pi16adcchannel.h
pi16adcchannel.h \
sht30.h
SOURCES += \
integrationplugini2cdevices.cpp \
ads1115channel.cpp \
pi16adcchannel.cpp
pi16adcchannel.cpp \
sht30.cpp

37
i2cdevices/integrationplugini2cdevices.cpp
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@ -33,6 +33,7 @@
#include "pi16adcchannel.h"
#include "ads1115channel.h"
#include "sht30.h"
#include <hardware/i2c/i2cmanager.h>
@ -117,6 +118,18 @@ void IntegrationPluginI2CDevices::discoverThings(ThingDiscoveryInfo *info)
info->addThingDescriptor(descriptor);
}
}
if (info->thingClassId() == sht3xThingClassId) {
// The SHT3x has selectable addresses 0x44 or 0x45
if (scanResult.address == 0x44 || scanResult.address == 0x45) {
ThingDescriptor descriptor(sht3xThingClassId, "SHT3x HT Sensor", QString("%1: 0x%2").arg(scanResult.portName).arg(scanResult.address, 0, 16));
ParamList params;
params << Param(sht3xThingI2cPortParamTypeId, scanResult.portName);
params << Param(sht3xThingI2cAddressParamTypeId, scanResult.address);
descriptor.setParams(params);
info->addThingDescriptor(descriptor);
}
}
}
info->finish(Thing::ThingErrorNoError);
@ -200,6 +213,30 @@ void IntegrationPluginI2CDevices::setupThing(ThingSetupInfo *info)
}
info->finish(Thing::ThingErrorNoError);
}
if (info->thing()->thingClassId() == sht3xThingClassId) {
QString i2cPortName = info->thing()->paramValue(sht3xThingI2cPortParamTypeId).toString();
int i2cAddress = info->thing()->paramValue(sht3xThingI2cAddressParamTypeId).toInt();
Q_UNUSED(i2cAddress)
SHT30 *sht3x = new SHT30(i2cPortName, i2cAddress, this);
if (!hardwareManager()->i2cManager()->open(sht3x)) {
delete sht3x;
info->finish(Thing::ThingErrorHardwareFailure, QT_TR_NOOP("Failed to open I2C port."));
return;
}
Thing *thing = info->thing();
connect(sht3x, &SHT30::measurementAvailable, thing, [thing](double temperature, double humidity){
thing->setStateValue(sht3xTemperatureStateTypeId, temperature);
thing->setStateValue(sht3xHumidityStateTypeId, humidity);
});
hardwareManager()->i2cManager()->startReading(sht3x, 5000);
m_i2cDevices.insert(sht3x, thing);
info->finish(Thing::ThingErrorNoError);
}
}
void IntegrationPluginI2CDevices::thingRemoved(Thing *thing)

53
i2cdevices/integrationplugini2cdevices.json
View File

@ -451,6 +451,59 @@
]
}
]
},
{
"id": "168bdbec-56b7-4eaf-bda8-0c5846a79c07",
"name": "sensirion",
"displayName": "Sensirion",
"thingClasses": [
{
"id": "0e05888f-bc77-408d-bc31-cd1cba720c2d",
"name": "sht3x",
"displayName": "SHT3x HT Sensor",
"createMethods": ["discovery"],
"interfaces": [ "temperaturesensor", "humiditysensor" ],
"setupMethod": "justAdd",
"paramTypes": [
{
"id": "e0cec363-9679-4347-8bb4-b30f9ab72ae8",
"name": "i2cPort",
"displayName": "I2C port",
"type": "QString"
},
{
"id": "7b83703b-210e-42ae-ab33-878bf1e358a5",
"name": "i2cAddress",
"displayName": "I2C address",
"type": "int"
}
],
"stateTypes": [
{
"id": "6d536826-9938-4457-901f-f4cc401edcc8",
"name": "temperature",
"displayName": "Temperature",
"displayNameEvent": "Temperature changed",
"type": "double",
"unit": "DegreeCelsius",
"defaultValue": 0,
"filter": "adaptive"
},
{
"id": "6722a1f5-10c8-4bc7-b921-c10fe45aefe8",
"name": "humidity",
"displayName": "Humidity",
"displayNameEvent": "Humidity changed",
"type": "double",
"unit": "Percentage",
"minValue": 0,
"maxValue": 100,
"defaultValue": 0,
"filter": "adaptive"
}
]
}
]
}
]
}

72
i2cdevices/sht30.cpp Normal file
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@ -0,0 +1,72 @@
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright 2013 - 2021, nymea GmbH
* Contact: contact@nymea.io
*
* This file is part of nymea.
* This project including source code and documentation is protected by
* copyright law, and remains the property of nymea GmbH. All rights, including
* reproduction, publication, editing and translation, are reserved. The use of
* this project is subject to the terms of a license agreement to be concluded
* with nymea GmbH in accordance with the terms of use of nymea GmbH, available
* under https://nymea.io/license
*
* GNU Lesser General Public License Usage
* Alternatively, this project may be redistributed and/or modified under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; version 3. This project is distributed in the hope that
* it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this project. If not, see <https://www.gnu.org/licenses/>.
*
* For any further details and any questions please contact us under
* contact@nymea.io or see our FAQ/Licensing Information on
* https://nymea.io/license/faq
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "sht30.h"
#include "extern-plugininfo.h"
#include <unistd.h>
#include <QThread>
SHT30::SHT30(const QString &portName, int address, QObject *parent) :
I2CDevice(portName, address, parent)
{
}
QByteArray SHT30::readData(int fileDescriptor)
{
// Send measurement command: 0x2C
// High repeatability measurement: 0x06
char config[2] = {0};
config[0] = 0x2C;
config[1] = 0x06;
if (write(fileDescriptor, config, 2) != 2) {
qCWarning(dcI2cDevices()) << "SHT30: could not configure sensor.";
QThread::msleep(500);
return QByteArray();
}
QThread::msleep(500);
// Read 6 bytes of data
// Temperature msb, Temperature lsb, Temperature CRC, Humididty msb, Humidity lsb, Humidity CRC
char data[6] = {0};
if (read(fileDescriptor, data, 6) != 6) {
qCWarning(dcI2cDevices()) << "SHT30: could not read sensor values.";
QThread::msleep(500);
return QByteArray();
}
// Convert the data
int temperatureRaw = (data[0] << 8) | data[1];
double temperature = -45 + (175 * temperatureRaw / 65535.0);
double humidity = 100 * ((data[3] << 8) | data[4]) / 65535.0;
emit measurementAvailable(temperature, humidity);
return QByteArray(data, 6);
}

51
i2cdevices/sht30.h Normal file
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@ -0,0 +1,51 @@
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright 2013 - 2021, nymea GmbH
* Contact: contact@nymea.io
*
* This file is part of nymea.
* This project including source code and documentation is protected by
* copyright law, and remains the property of nymea GmbH. All rights, including
* reproduction, publication, editing and translation, are reserved. The use of
* this project is subject to the terms of a license agreement to be concluded
* with nymea GmbH in accordance with the terms of use of nymea GmbH, available
* under https://nymea.io/license
*
* GNU Lesser General Public License Usage
* Alternatively, this project may be redistributed and/or modified under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; version 3. This project is distributed in the hope that
* it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this project. If not, see <https://www.gnu.org/licenses/>.
*
* For any further details and any questions please contact us under
* contact@nymea.io or see our FAQ/Licensing Information on
* https://nymea.io/license/faq
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifndef SHT30_H
#define SHT30_H
#include <QObject>
#include <hardware/i2c/i2cdevice.h>
class SHT30 : public I2CDevice
{
Q_OBJECT
public:
explicit SHT30(const QString &portName, int address, QObject *parent = nullptr);
QByteArray readData(int fileDescriptor) override;
signals:
void measurementAvailable(double temperature, double humidity);
};
#endif // SHT30_H