Tasmota/tasmota/xsns_78_ezoprs.ino

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/*
xsns_78_ezoprs.ino - EZO PRS I2C PRS sensor support for Tasmota
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Copyright (C) 2021 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_EZOPRS
#define EZO_PRS_READ_LATENCY 900
struct EZOPRS : public EZOStruct {
EZOPRS(uint32_t addr) : EZOStruct(addr), pressure(NAN) {}
virtual void ProcessMeasurement(void)
{
char data[D_EZO_MAX_BUF];
EZOStruct::ProcessMeasurement(data, sizeof(data), EZO_PRS_READ_LATENCY);
pressure = CharToFloat(data) * 68.9476f; // Convert to hPa
}
virtual void Show(bool json, const char *name)
{
char str[33];
char sealevelstr[33];
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dtostrfd(ConvertPressure(pressure), Settings->flag2.pressure_resolution, str);
dtostrfd(ConvertPressureForSeaLevel(pressure), Settings->flag2.pressure_resolution, sealevelstr);
if (json) {
ResponseAppend_P(PSTR(",\"%s\":{\"" D_JSON_PRESSURE "\":%s"), name, str);
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if (Settings->altitude != 0) {
ResponseAppend_P(PSTR(",\"" D_JSON_PRESSUREATSEALEVEL "\":%s"), sealevelstr);
}
ResponseJsonEnd();
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#ifdef USE_WEBSERVER
}else {
WSContentSend_PD(HTTP_SNS_PRESSURE, name, str, PressureUnit().c_str());
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if (Settings->altitude != 0) {
WSContentSend_PD(HTTP_SNS_SEAPRESSURE, name, sealevelstr, PressureUnit().c_str());
}
#endif // USE_WEBSERVER
}
}
static const char id[] PROGMEM;
private:
float pressure;
};
const char EZOPRS::id[] PROGMEM = "PRS";
#endif // USE_EZOPRS
#endif // USE_I2C