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sht20 support

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This commit is contained in:
Empire 2022-03-05 09:31:43 +00:00
parent a9c4c32a22
commit defbcca8ae
8 changed files with 121 additions and 74 deletions
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6
esp32/include/ControllerConfiguration.h
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@ -21,8 +21,8 @@
#define OUTPUT_ENABLE_PUMP GPIO_NUM_13 /**< GPIO 13 - Enable Pumps */
#define SENSOR_ONEWIRE GPIO_NUM_4 /**< GPIO 12 - Temperatur sensor, Battery and other cool onewire stuff */
#define SENSOR_TANK_ECHO GPIO_NUM_16 /**< GPIO 16 - echo feedback of water sensor */
#define SENSOR_TANK_TRG GPIO_NUM_17 /**< GPIO 17 - trigger for water sensor */
#define SHARED_SCL GPIO_NUM_16 /**< GPIO 16 - echo feedback of water sensor */
#define SENSOR_TANK_SDA GPIO_NUM_17 /**< GPIO 17 - trigger for water sensor */
#define BUTTON GPIO_NUM_0 /**< GPIO 0 - Fix button of NodeMCU */
#define CUSTOM1_PIN1 GPIO_NUM_34 /** direct gpio */
@ -65,6 +65,8 @@
#define TEMPERATUR_TIMEOUT 3000 /**< 3 Seconds timeout for the temperatur sensors */
#define DS18B20_RESOLUTION 9 /**< 9bit temperature resolution -> 0.5°C steps */
#define PLANT_WITHOUT_TEMPSENSOR 100
#define UTC_OFFSET_DE 3600 /* UTC offset in seconds for Germany */
#define UTF_OFFSET_DE_DST 3600 /* offset in seconds if daylight saving time is active */

3
esp32/include/HomieConfiguration.h
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@ -101,7 +101,6 @@ HomieSetting<const char *> ntpServer("ntpServer", "NTP server (pool.ntp.org as d
#define GENERATE_PLANT(plant, strplant) \
HomieSetting<double> mSensorDry##plant = HomieSetting<double>("dry" strplant, "Plant " strplant "- Moist sensor dry %"); \
HomieSetting<long> pSensorType##plant = HomieSetting<long>("sensoryType" strplant, "sensor" strplant " - sensortype"); \
HomieSetting<long> mPumpAllowedHourRangeStart##plant = HomieSetting<long>("hourstart" strplant, "Plant" strplant " - Range pump allowed hour start (0-23)"); \
HomieSetting<long> mPumpAllowedHourRangeEnd##plant = HomieSetting<long>("hourend" strplant, "Plant" strplant " - Range pump allowed hour end (0-23)"); \
HomieSetting<bool> mPumpOnlyWhenLowLight##plant = HomieSetting<bool>("lowLight" strplant, "Plant" strplant " - Enable the Pump only, when there is no sunlight"); \
@ -109,7 +108,7 @@ HomieSetting<const char *> ntpServer("ntpServer", "NTP server (pool.ntp.org as d
HomieSetting<long> pPumpDuration##plant = HomieSetting<long>("pumpDuration" strplant, "Plant" strplant " - time seconds to water when pump is active"); \
HomieSetting<long> pPumpMl##plant = HomieSetting<long>("pumpAmount" strplant, "Plant" strplant " - ml (if using flowmeter) to water when pump is active"); \
HomieSetting<long> pPowerLevel##plant = HomieSetting<long>("powerLevel" strplant, "Plant" strplant " - pwm duty cycle in percent"); \
PlantSettings_t mSetting##plant = {&mSensorDry##plant, &pSensorType##plant, &mPumpAllowedHourRangeStart##plant, &mPumpAllowedHourRangeEnd##plant, &mPumpOnlyWhenLowLight##plant, &mPumpCooldownInMinutes##plant, &pPumpDuration##plant, &pPowerLevel##plant, &pPumpMl##plant}; \
PlantSettings_t mSetting##plant = {&mSensorDry##plant, &mPumpAllowedHourRangeStart##plant, &mPumpAllowedHourRangeEnd##plant, &mPumpOnlyWhenLowLight##plant, &mPumpCooldownInMinutes##plant, &pPumpDuration##plant, &pPowerLevel##plant, &pPumpMl##plant}; \
/**< Generate all settings for one plant \
* \
* Feature to start pumping only at morning: @link{SOLAR_CHARGE_MIN_VOLTAGE} and @link{SOLAR_CHARGE_MAX_VOLTAGE} \

2
esp32/include/HomieTypes.h
View File

@ -17,6 +17,7 @@
SENSOR(NONE) \
SENSOR(CAPACITIVE_FREQUENCY) \
SENSOR(ANALOG_RESISTANCE_PROBE) \
SENSOR(SHT20)
#define GENERATE_ENUM(ENUM) ENUM,
#define GENERATE_STRING(STRING) #STRING,
@ -39,7 +40,6 @@ static const char *SENSOR_STRING[] = {
typedef struct PlantSettings_t
{
HomieSetting<double> *pSensorDry;
HomieSetting<long> *pSensorMode;
HomieSetting<long> *pPumpAllowedHourRangeStart;
HomieSetting<long> *pPumpAllowedHourRangeEnd;
HomieSetting<bool> *pPumpOnlyWhenLowLight;

2
esp32/include/LogDefines.h
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@ -24,6 +24,8 @@
#define LOG_SENSORMODE_UNKNOWN "Unknown sensor mode requested"
#define LOG_SENSORMODE_UNKNOWN_CODE -5
#define LOG_SENSOR_MISSING -6
#define LOG_PUMP_AND_DOWNLOADMODE "Download mode, ignoring pump request"
#define LOG_PUMP_AND_DOWNLOADMODE_CODE 2

41
esp32/include/PlantCtrl.h
View File

@ -19,6 +19,7 @@
#include "MathUtils.h"
#include "MQTTUtils.h"
#include "LogDefines.h"
#include "SHT2x.h"
#define ANALOG_REREADS 5
#define MOISTURE_MEASUREMENT_DURATION 400 /** ms */
@ -32,10 +33,14 @@ private:
HomieNode *mPlant = NULL;
HomieInternals::PropertyInterface mPump;
RunningMedian mMoisture_raw = RunningMedian(ANALOG_REREADS);
RunningMedian mTemperature_degree = RunningMedian(ANALOG_REREADS);
int mPinSensor = 0; /**< Pin of the moist sensor */
int mPinPump = 0; /**< Pin of the pump */
bool mConnected = false;
int mPlantId = -1;
SENSOR_MODE mSensorMode;
SHT2x sht20;
public:
PlantSettings_t *mSetting;
@ -48,15 +53,15 @@ public:
Plant(int pinSensor, int pinPump,
int plantId,
HomieNode *plant,
PlantSettings_t *setting);
PlantSettings_t *setting, SENSOR_MODE mode);
void postMQTTconnection(void);
void advertise(void);
//for sensor that might take any time
// for sensor that might take any time
void blockingMoistureMeasurement(void);
//for sensor that need a start and a end in defined timing
// for sensor that need a start and a end in defined timing
void startMoistureMeasurement(void);
void stopMoistureMeasurement(void);
@ -64,7 +69,8 @@ public:
void activatePump(void);
String getSensorModeString(){
String getSensorModeString()
{
SENSOR_MODE mode = getSensorMode();
return SENSOR_STRING[mode];
}
@ -77,9 +83,7 @@ public:
SENSOR_MODE getSensorMode()
{
int raw_mode = this->mSetting->pSensorMode->get();
SENSOR_MODE sensorType = static_cast<SENSOR_MODE>(raw_mode);
return sensorType;
return mSensorMode;
}
/**
@ -92,7 +96,7 @@ public:
{
if (isHydroponic())
{
//hydroponic only uses timer based controll
// hydroponic only uses timer based controll
return true;
}
bool isDry = getCurrentMoisturePCT() < getTargetMoisturePCT();
@ -118,25 +122,34 @@ public:
}
}
float getCurrentTemperature(){
if(mTemperature_degree.getCount() == 0){
return PLANT_WITHOUT_TEMPSENSOR;
}
return mTemperature_degree.getMedian();
}
float getCurrentMoisturePCT()
{
switch (getSensorMode()){
switch (getSensorMode())
{
case NONE:
return DEACTIVATED_PLANT;
case CAPACITIVE_FREQUENCY:
return mapf(mMoisture_raw.getMedian(), MOIST_SENSOR_MAX_FRQ, MOIST_SENSOR_MIN_FRQ, 0, 100);
case ANALOG_RESISTANCE_PROBE:
return mapf(mMoisture_raw.getMedian(), ANALOG_SENSOR_MAX_MV, ANALOG_SENSOR_MIN_MV, 0, 100);
default:
log(LOG_LEVEL_ERROR, LOG_SENSORMODE_UNKNOWN, LOG_SENSORMODE_UNKNOWN_CODE);
return DEACTIVATED_PLANT;
case SHT20:
return mMoisture_raw.getMedian();
}
return MISSING_SENSOR;
}
float getCurrentMoistureRaw()
{
if(getSensorMode() == CAPACITIVE_FREQUENCY){
if (mMoisture_raw.getMedian() < MOIST_SENSOR_MIN_FRQ)
if (getSensorMode() == CAPACITIVE_FREQUENCY)
{
if (mMoisture_raw.getMedian() < MOIST_SENSOR_MIN_FRQ)
{
return MISSING_SENSOR;
}

1
esp32/platformio.ini
View File

@ -22,6 +22,7 @@ lib_deps = ArduinoJson@6.16.1
DallasTemperature
pololu/VL53L0X
https://github.com/homieiot/homie-esp8266.git#develop
robtillaart/SHT2x@^0.1.3
[platformio]

62
esp32/src/PlantCtrl.cpp
View File

@ -13,14 +13,17 @@
#include "ControllerConfiguration.h"
#include "TimeUtils.h"
#include "driver/pcnt.h"
#include "MQTTUtils.h"
Plant::Plant(int pinSensor, int pinPump, int plantId, HomieNode *plant, PlantSettings_t *setting)
Plant::Plant(int pinSensor, int pinPump, int plantId, HomieNode *plant, PlantSettings_t *setting, SENSOR_MODE mode)
{
this->mPinSensor = pinSensor;
this->mPinPump = pinPump;
this->mPlant = plant;
this->mSetting = setting;
this->mPlantId = plantId;
this->mSensorMode = mode;
this->sht20 = SHT2x();
}
void Plant::init(void)
@ -30,10 +33,6 @@ void Plant::init(void)
this->mSetting->pSensorDry->setValidator([](long candidate)
{ return (((candidate >= 0.0) && (candidate <= 100.0)) || equalish(candidate, DEACTIVATED_PLANT) || equalish(candidate, HYDROPONIC_MODE)); });
this->mSetting->pSensorMode->setDefaultValue(NONE);
this->mSetting->pSensorMode->setValidator([](long candidate)
{ return candidate == NONE || candidate == CAPACITIVE_FREQUENCY || candidate == ANALOG_RESISTANCE_PROBE; });
this->mSetting->pPumpAllowedHourRangeStart->setDefaultValue(8); // start at 8:00
this->mSetting->pPumpAllowedHourRangeStart->setValidator([](long candidate)
{ return ((candidate >= 0) && (candidate <= 23)); });
@ -56,18 +55,14 @@ void Plant::init(void)
{ return ((candidate >= 0) && (candidate <= 100)); });
/* Initialize Hardware */
Serial.println("Init PWM controller for pump " + String(mPinPump) + "=" + String(OUTPUT));
Serial.flush();
ledcSetup(this->mPlantId, PWM_FREQ, PWM_BITS);
ledcAttachPin(mPinPump, this->mPlantId);
ledcWrite(this->mPlantId, 0);
Serial.println("Set GPIO mode " + String(mPinSensor) + "=" + String(ANALOG));
Serial.flush();
pinMode(this->mPinSensor, INPUT);
}
void Plant::initSensors(void){
void Plant::initSensors(void)
{
switch (getSensorMode())
{
case CAPACITIVE_FREQUENCY:
@ -89,19 +84,17 @@ void Plant::initSensors(void){
pcnt_counter_pause(unit); // Pausa o contador PCNT
pcnt_counter_clear(unit); // Zera o contador PCNT
Serial.println("Setup Counter " + String(mPinPump) + "=" + String(LOW));
break;
}
case ANALOG_RESISTANCE_PROBE:
{
adcAttachPin(this->mPinSensor);
break;
}
case SHT20:
case NONE:
{
//do nothing
// do nothing
break;
}
}
@ -117,13 +110,41 @@ void Plant::blockingMoistureMeasurement(void)
{
this->mMoisture_raw.add(analogReadMilliVolts(this->mPinSensor));
delay(5);
}
break;
}
case SHT20:
{
//do not assume valid i2c state, reinit
TwoWire sensorWire = TwoWire(0);
sensorWire.setPins(SENSOR_TANK_SDA, SHARED_SCL);
sht20.begin(&sensorWire);
sht20.reset();
delay(100);
if(!sht20.isConnected()){
Serial.println("SHT20 connection error");
}
bool success = sht20.read();
int error = sht20.getError();
if (error)
{
log(LOG_LEVEL_ERROR, "Failure reading SHT20 " + String(error), LOG_SENSOR_MISSING);
}
if (!success || error)
{
this->mMoisture_raw.clear();
this->mMoisture_raw.add(MISSING_SENSOR);
return;
}
mMoisture_raw.add(sht20.getHumidity());
mTemperature_degree.add(sht20.getTemperature());
break;
}
case CAPACITIVE_FREQUENCY:
case NONE:
{
//nothing to do here
// nothing to do here
break;
}
}
@ -139,10 +160,11 @@ void Plant::startMoistureMeasurement(void)
pcnt_counter_resume(unit);
break;
}
case SHT20:
case ANALOG_RESISTANCE_PROBE:
case NONE:
{
//do nothing here
// do nothing here
}
}
}
@ -170,11 +192,8 @@ void Plant::stopMoistureMeasurement(void)
}
break;
}
case SHT20:
case ANALOG_RESISTANCE_PROBE:
{
//nothing to do here
break;
}
case NONE:
{
break;
@ -280,4 +299,5 @@ void Plant::advertise(void)
this->mPlant->advertise("moist").setName("Percent").setDatatype("Float").setUnit("%");
this->mPlant->advertise("moistraw").setName("adc").setDatatype("Float").setUnit("3.3/4096V");
this->mPlant->advertise("state").setName("state").setDatatype("String");
}

46
esp32/src/main.cpp
View File

@ -93,13 +93,13 @@ DS2438 battery(&oneWire, 0.0333333f, AMOUNT_SENOR_QUERYS);
VL53L0X tankSensor;
Plant mPlants[MAX_PLANTS] = {
Plant(SENSOR_PLANT0, OUTPUT_PUMP0, 0, &plant0, &mSetting0),
Plant(SENSOR_PLANT1, OUTPUT_PUMP1, 1, &plant1, &mSetting1),
Plant(SENSOR_PLANT2, OUTPUT_PUMP2, 2, &plant2, &mSetting2),
Plant(SENSOR_PLANT3, OUTPUT_PUMP3, 3, &plant3, &mSetting3),
Plant(SENSOR_PLANT4, OUTPUT_PUMP4, 4, &plant4, &mSetting4),
Plant(SENSOR_PLANT5, OUTPUT_PUMP5, 5, &plant5, &mSetting5),
Plant(SENSOR_PLANT6, OUTPUT_PUMP6, 6, &plant6, &mSetting6)};
Plant(SENSOR_PLANT0, OUTPUT_PUMP0, 0, &plant0, &mSetting0, SHT20),
Plant(SENSOR_PLANT1, OUTPUT_PUMP1, 1, &plant1, &mSetting1, ANALOG_RESISTANCE_PROBE),
Plant(SENSOR_PLANT2, OUTPUT_PUMP2, 2, &plant2, &mSetting2, CAPACITIVE_FREQUENCY),
Plant(SENSOR_PLANT3, OUTPUT_PUMP3, 3, &plant3, &mSetting3, CAPACITIVE_FREQUENCY),
Plant(SENSOR_PLANT4, OUTPUT_PUMP4, 4, &plant4, &mSetting4, CAPACITIVE_FREQUENCY),
Plant(SENSOR_PLANT5, OUTPUT_PUMP5, 5, &plant5, &mSetting5, CAPACITIVE_FREQUENCY),
Plant(SENSOR_PLANT6, OUTPUT_PUMP6, 6, &plant6, &mSetting6, CAPACITIVE_FREQUENCY)};
/******************************************************************************
* LOCAL FUNCTIONS
@ -264,7 +264,6 @@ void readPowerSwitchedSensors()
{
mPlants[i].startMoistureMeasurement();
}
delay(MOISTURE_MEASUREMENT_DURATION);
for (int i = 0; i < MAX_PLANTS; i++)
{
@ -286,18 +285,26 @@ void readPowerSwitchedSensors()
break;
}
case ANALOG_RESISTANCE_PROBE : {
Serial << "Plant " << i << " measurement: " << mPlants[i].getCurrentMoistureRaw() << " mV" << mPlants[i].getCurrentMoisturePCT() << "%" << endl;
Serial << "Plant " << i << " measurement: " << mPlants[i].getCurrentMoistureRaw() << " mV " << mPlants[i].getCurrentMoisturePCT() << "%" << endl;
break;
}
case SHT20:{
Serial << "Plant " << i << " measurement: " << mPlants[i].getCurrentTemperature() << "°C " << mPlants[i].getCurrentMoisturePCT() << "rH%" << endl;
break;
}
case NONE : {
}
}
}
waterRawSensor.clear();
Wire.setPins(SENSOR_TANK_TRG, SENSOR_TANK_ECHO);
//do not assume valid i2c state, force release of hardware
Wire = TwoWire(0);
Wire.setPins(SENSOR_TANK_SDA, SHARED_SCL);
Wire.begin();
waterRawSensor.clear();
tankSensor.setTimeout(500);
long start = millis();
bool distanceReady = false;
@ -761,13 +768,17 @@ void safeSetup()
Homie.setLoopFunction(homieLoop);
Homie.onEvent(onHomieEvent);
Homie.setup();
/* Intialize Plant */
for (int i = 0; i < MAX_PLANTS; i++)
{
mPlants[i].initSensors();
}
readPowerSwitchedSensors();
Homie.setup();
/************************* Start One-Wire bus ***************/
int tempInitStartTime = millis();
@ -794,14 +805,13 @@ void safeSetup()
mConfigured = Homie.isConfigured();
if (mConfigured)
{
Serial << "Reading sensors start" << endl;
Serial.flush();
readPowerSwitchedSensors();
Serial << "Reading sensors end" << endl;
Serial.flush();
for (int i = 0; i < MAX_PLANTS; i++)
{
mPlants[i].advertise();
//write to temperature node instead
if(!equalish(mPlants[i].getCurrentTemperature(),PLANT_WITHOUT_TEMPSENSOR)){
mqttWrite(&sensorTemp, "Plant" + String(i), String(mPlants[i].getCurrentTemperature()));
}
}
mPlants[0].setSwitchHandler(switch1);
mPlants[1].setSwitchHandler(switch2);