mirror of https://github.com/arendst/Tasmota.git
151 lines
4.1 KiB
C++
151 lines
4.1 KiB
C++
/*
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xsns_99_ens210.ino - ENS210 gas and air quality sensor support for Tasmota
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Copyright (C) 2021 Christoph Friese and Theo Arends
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef USE_I2C
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#ifdef USE_ENS210
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/*********************************************************************************************\
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* ENS210 - Temperature & Humidity sensor
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*
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* Source: ScioSense
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*
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* I2C Address: 0x43
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\*********************************************************************************************/
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#define XSNS_112 112
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#define XI2C_85 85 // See I2CDEVICES.md
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#define ENS210_EVERYNSECONDS 5
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#define ENS210_DEVICE_NAME "EN210"
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#define ENS210_LOG "E21"
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#include "ScioSense_ENS210.h"
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typedef struct ENS210DATA_s {
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ScioSense_ENS210 *ens210;
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float temperature;
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float humidity;
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uint8_t ready;
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uint8_t tcnt;
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uint8_t ecnt;
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} ENS210DATA_t;
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ENS210DATA_t *ENS210data = nullptr;
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/********************************************************************************************/
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void ens210Detect(void)
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{
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uint8_t i2caddr = ENS210_I2CADDR;
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if (!I2cActive(i2caddr))
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{
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ScioSense_ENS210 *ens210 = new ScioSense_ENS210(i2caddr);
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if (!ens210) {
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AddLog(LOG_LEVEL_DEBUG, PSTR(ENS210_LOG ":@%02X create error!"), i2caddr);
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return;
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}
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if (!ens210->begin()) {
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AddLog(LOG_LEVEL_DEBUG_MORE, PSTR(ENS210_LOG ":@%02X begin error!"), i2caddr);
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return;
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}
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if (!ens210->available()) {
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AddLog(LOG_LEVEL_ERROR, PSTR(ENS210_LOG ":@%02X available error!"), i2caddr);
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return;
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}
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ens210->setSingleMode(false);
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ENS210data = (ENS210DATA_t *)calloc(1, sizeof(ENS210DATA_t));
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if (!ENS210data) {
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AddLog(LOG_LEVEL_ERROR, PSTR(ENS210_LOG ":@%02X Memory error!"), i2caddr);
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return;
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}
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ENS210data->ens210 = ens210;
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I2cSetActiveFound(i2caddr, ENS210_DEVICE_NAME);
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}
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}
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void ens210Update(void) // Perform every n second
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{
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ENS210data->tcnt++;
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if (ENS210data->tcnt >= ENS210_EVERYNSECONDS) {
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ENS210data->tcnt = 0;
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ENS210data->ready = 0;
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if (ENS210data->ens210->available()) {
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ENS210data->ens210->measure();
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ENS210data->temperature = ENS210data->ens210->getTempCelsius();
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ENS210data->humidity = ENS210data->ens210->getHumidityPercent();
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ENS210data->ready = 1;
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ENS210data->ecnt = 0;
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} else {
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// failed, count up
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ENS210data->ecnt++;
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if (ENS210data->ecnt > 6) {
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// after 30 seconds, restart
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ENS210data->ens210->begin();
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if (ENS210data->ens210->available()) {
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ENS210data->ens210->setSingleMode(false);
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}
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}
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}
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}
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}
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void ens210Show(bool json)
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{
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if (ENS210data->ready) {
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TempHumDewShow(json, (0 == TasmotaGlobal.tele_period), ENS210_DEVICE_NAME, ENS210data->temperature, ENS210data->humidity);
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}
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}
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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xsns112(uint32_t function)
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{
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if (!I2cEnabled(XI2C_85)) { return false; }
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bool result = false;
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if (FUNC_INIT == function) {
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ens210Detect();
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}
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else if (ENS210data) {
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switch (function) {
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case FUNC_EVERY_SECOND:
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ens210Update();
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break;
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case FUNC_JSON_APPEND:
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ens210Show(1);
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break;
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#ifdef USE_WEBSERVER
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case FUNC_WEB_SENSOR:
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ens210Show(0);
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break;
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#endif // USE_WEBSERVER
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}
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}
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return result;
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}
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#endif // USE_ENS210
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#endif // USE_I2C
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