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HECA dehumidifier #845

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HECA dehumidifier #845

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79 changes: 78 additions & 1 deletion airrohr-firmware/airrohr-firmware.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -107,6 +107,7 @@ String SOFTWARE_VERSION(SOFTWARE_VERSION_STR);
#include "./DHT.h"
#include <Adafruit_HTU21DF.h>
#include <Adafruit_BMP085.h>
#include "ClosedCube_SHT31D.h" // support for Nettigo Air Monitor HECA
#include <Adafruit_SHT31.h>
#include <StreamString.h>
#include <DallasTemperature.h>
Expand Down Expand Up @@ -164,6 +165,7 @@ namespace cfg {
bool sps30_read = SPS30_READ;
bool bmp_read = BMP_READ;
bool bmx280_read = BMX280_READ;
bool heca_read = HECA_READ;
bool sht3x_read = SHT3X_READ;
bool ds18b20_read = DS18B20_READ;
bool dnms_read = DNMS_READ;
Expand Down Expand Up @@ -243,6 +245,7 @@ long int sample_count = 0;
bool htu21d_init_failed = false;
bool bmp_init_failed = false;
bool bmx280_init_failed = false;
bool heca_init_failed = false;
bool sht3x_init_failed = false;
bool dnms_init_failed = false;
bool gps_init_failed = false;
Expand Down Expand Up @@ -304,6 +307,11 @@ Adafruit_BMP085 bmp;
*****************************************************************/
BMX280 bmx280;

/*****************************************************************
* HECA (SHT30) declaration *
*****************************************************************/
ClosedCube_SHT31D heca;

/*****************************************************************
* SHT3x declaration *
*****************************************************************/
Expand Down Expand Up @@ -464,6 +472,8 @@ float last_value_NPM_P2 = -1.0;
float last_value_NPM_N0 = -1.0;
float last_value_NPM_N1 = -1.0;
float last_value_NPM_N2 = -1.0;
double last_value_HECA_T = -128.0;
double last_value_HECA_H = -1.0;
float last_value_GPS_alt = -1000.0;
double last_value_GPS_lat = -200.0;
double last_value_GPS_lon = -200.0;
Expand Down Expand Up @@ -1130,6 +1140,7 @@ static void webserver_config_send_body_get(String& page_content) {
add_form_checkbox_sensor(Config_htu21d_read, FPSTR(INTL_HTU21D));
add_form_checkbox_sensor(Config_bmx280_read, FPSTR(INTL_BMX280));
add_form_checkbox_sensor(Config_sht3x_read, FPSTR(INTL_SHT3X));
add_form_checkbox_sensor(Config_heca_read, FPSTR(INTL_HECA)); //page_content += form_checkbox_sensor("heca_read", FPSTR(INTL_HECA), heca_read);

// Paginate page after ~ 1500 Bytes
server.sendContent(page_content);
Expand Down Expand Up @@ -1501,6 +1512,11 @@ static void webserver_values() {
add_table_h_value(FPSTR(SENSORS_SHT3X), FPSTR(INTL_HUMIDITY), last_value_SHT3X_H);
page_content += FPSTR(EMPTY_ROW);
}
if (cfg::heca_read) {
add_table_t_value(FPSTR(SENSORS_HECA), FPSTR(INTL_TEMPERATURE), check_display_value(last_value_HECA_T, -128, 1, 0), unit_T);
add_table_h_value(FPSTR(SENSORS_HECA), FPSTR(INTL_HUMIDITY), check_display_value(last_value_HECA_H, -1, 1, 0), unit_H);
page_content += FPSTR(EMPTY_ROW);
}
if (cfg::ds18b20_read) {
add_table_t_value(FPSTR(SENSORS_DS18B20), FPSTR(INTL_TEMPERATURE), last_value_DS18B20_T);
page_content += FPSTR(EMPTY_ROW);
Expand Down Expand Up @@ -2413,6 +2429,27 @@ static void fetchSensorSHT3x(String& s) {
debug_outln_verbose(FPSTR(DBG_TXT_END_READING), FPSTR(SENSORS_SHT3X));
}

/*****************************************************************
* read HECA (SHT3x) sensor values *
*****************************************************************/
static string sensorHECA() {
String s;

debug_out(String(FPSTR(DBG_TXT_START_READING)) + FPSTR(SENSORS_HECA), DEBUG_MED_INFO, 1);

SHT31D result = heca.periodicFetchData();
if (result.error == SHT3XD_NO_ERROR) {
last_value_HECA_T = result.t;
last_value_HECA_H = result.rh;
} else {
last_value_HECA_T = -128.0;
last_value_HECA_H = -1.0;
}
s += Value2Json(F("HECA_temperature"), Float2String(last_value_HECA_T));
s += Value2Json(F("HECA_humidity"), Float2String(last_value_HECA_H));
return s;
}

/*****************************************************************
* read BMP280/BME280 sensor values *
*****************************************************************/
Expand Down Expand Up @@ -3659,7 +3696,7 @@ static void display_values() {
if (cfg::sps30_read) {
screens[screen_count++] = 2;
}
if (cfg::dht_read || cfg::ds18b20_read || cfg::htu21d_read || cfg::bmp_read || cfg::bmx280_read || cfg::sht3x_read) {
if (cfg::dht_read || cfg::ds18b20_read || cfg::htu21d_read || cfg::bmp_read || cfg::bmx280_read || cfg::sht3x_read || cfg::heca_read ) {
screens[screen_count++] = 3;
}
if (cfg::gps_read) {
Expand Down Expand Up @@ -3927,6 +3964,34 @@ static void initSPS30() {
}
}

/*****************************************************************
* Init HECA *
*****************************************************************/

bool initHECA() {

debug_out(F("Trying HECA (SHT30) sensor on 0x44"), DEBUG_MIN_INFO, 0);
heca.begin(0x44);
//heca.begin(addr);
if (heca.periodicStart(SHT3XD_REPEATABILITY_HIGH, SHT3XD_FREQUENCY_1HZ) != SHT3XD_NO_ERROR) {
debug_out(F(" ... not found"), DEBUG_MIN_INFO, 1);
debug_out(F(" [HECA ERROR] Cannot start periodic mode"), DEBUG_MIN_INFO, 1);
return false;
} else {
// temperature set, temperature clear, humidity set, humidity clear
if (heca.writeAlertHigh(120, 119, 63, 60) != SHT3XD_NO_ERROR) {
debug_out(F(" [HECA ERROR] Cannot set Alert HIGH"), DEBUG_MIN_INFO, 1);
}
if (heca.writeAlertLow(-5, 5, 0, 1) != SHT3XD_NO_ERROR) {
debug_out(F(" [HECA ERROR] Cannot set Alert LOW"), DEBUG_MIN_INFO, 1);
}
if (heca.clearAll() != SHT3XD_NO_ERROR) {
debug_out(F(" [HECA ERROR] Cannot clear register"), DEBUG_MIN_INFO, 1);
}
return true;
}
}

/*****************************************************************
Init DNMS - Digital Noise Measurement Sensor
*****************************************************************/
Expand Down Expand Up @@ -4080,6 +4145,14 @@ static void powerOnTestSensors() {
}
}

if (cfg::heca_read) {
debug_out_info(F("Read HECA (SHT30)..."));
if (!initHECA()) {
debug_outln_error(F("Check HECA (SHT30) wiring"));
heca_init_failed = true;
}
}

if (cfg::ds18b20_read) {
oneWire.begin(ONEWIRE_PIN);
ds18b20.begin(); // Start DS18B20
Expand Down Expand Up @@ -4481,6 +4554,10 @@ void loop(void) {
sum_send_time += sendSensorCommunity(result, SHT3X_API_PIN, FPSTR(SENSORS_SHT3X), "SHT3X_");
result = emptyString;
}
if (cfg::heca_read && (! heca_init_failed)) {
debug_out(String(FPSTR(DBG_TXT_CALL_SENSOR)) + FPSTR(SENSORS_HECA), DEBUG_MAX_INFO, 1);
result_HECA = sensorHECA(); // getting temperature, humidity and pressure (optional)
}
if (cfg::ds18b20_read) {
// getting temperature (optional)
fetchSensorDS18B20(result);
Expand Down