Tasmota/tasmota/xsns_78_ezoco2.ino

62 lines
1.5 KiB
C++

/*
xsns_78_ezoco2.ino - EZO CO2 I2C CO2 sensor support for Tasmota
Copyright (C) 2020 Christopher Tremblay
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_I2C
#ifdef USE_EZOCO2
#define EZO_CO2_READ_LATENCY 900
struct EZOCO2 : public EZOStruct {
EZOCO2(uint32_t addr) : EZOStruct(addr), CO2(0) {}
virtual void ProcessMeasurement(void)
{
char data[D_EZO_MAX_BUF];
EZOStruct::ProcessMeasurement(data, sizeof(data), EZO_CO2_READ_LATENCY);
// sensor has a 10s warmup period
if (uptime >= 10) {
CO2 = atoi(data);
}
}
virtual void Show(bool json, const char *name)
{
if (json) {
ResponseAppend_P(PSTR(",\"%s\":{\"" D_JSON_CO2 "\":%d}" ), name, CO2);
}
#ifdef USE_WEBSERVER
else {
WSContentSend_PD(HTTP_SNS_CO2, name, CO2);
#endif // USE_WEBSERVER
}
}
static const char id[] PROGMEM;
private:
uint16_t CO2;
};
const char EZOCO2::id[] PROGMEM = "CO2";
#endif // USE_EZOCO2
#endif // USE_I2C