Tasmota/tasmota/xsns_78_ezoflo.ino

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/*
xsns_78_ezoflo.ino - EZO FLO I2C FLO 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_EZOFLO
#define EZO_FLO_READ_LATENCY 300
struct EZOFLO : public EZOStruct {
EZOFLO(uint32_t addr) : EZOStruct(addr), totalVolume(NAN), flowRate(NAN) {}
virtual void ProcessMeasurement(void)
{
char data[D_EZO_MAX_BUF];
// Total Volume, Flow Rate
EZOStruct::ProcessMeasurement(data, sizeof(data), EZO_FLO_READ_LATENCY);
totalVolume = CharToFloat(data);
char *next = strchr(data, ',');
if (next) {
flowRate = CharToFloat(next + 1);
}
}
virtual void Show(bool json, const char *name)
{
char volume[FLOATSZ];
char rate[FLOATSZ];
bool hasFlow = !isnan(flowRate);
dtostrfd(totalVolume, 2, volume);
dtostrfd(flowRate, 2, rate);
if (json) {
ResponseAppend_P(PSTR(",\"%s\":{\"" D_JSON_VOLUME "\":%s"), name, volume);
if (hasFlow) {
ResponseAppend_P(PSTR(",\"" D_JSON_FLOWRATE "\":%s"), rate);
}
ResponseJsonEnd();
#ifdef USE_WEBSERVER
} else {
WSContentSend_PD(HTTP_SNS_LITERS, name, volume);
if (hasFlow) {
WSContentSend_PD(HTTP_SNS_LPM, name, rate);
}
#endif
}
}
static const char id[] PROGMEM;
private:
float totalVolume;
float flowRate;
};
const char EZOFLO::id[] PROGMEM = "FLO";
#endif // USE_EZOFLO
#endif // USE_I2C