Tasmota/sonoff/xsns_19_mgs.ino

122 lines
4.4 KiB
C++

/*
xsns_19_mgs.ino - Xadow and Grove Mutichannel Gas sensor support for Sonoff-Tasmota
Copyright (C) 2018 Palich2000 and Theo Arends
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_MGS
/*********************************************************************************************\
* Grove - Multichannel Gas Sensor
* http://wiki.seeed.cc/Grove-Multichannel_Gas_Sensor/
*
* https://github.com/Seeed-Studio/Mutichannel_Gas_Sensor.git
\*********************************************************************************************/
#ifndef MGS_SENSOR_ADDR
#define MGS_SENSOR_ADDR 0x04 // Default Mutichannel Gas sensor i2c address
#endif
#include "MutichannelGasSensor.h"
void MGSInit() {
gas.begin(MGS_SENSOR_ADDR);
}
boolean MGSPrepare()
{
gas.begin(MGS_SENSOR_ADDR);
if (!gas.isError()) {
snprintf_P(log_data, sizeof(log_data), S_LOG_I2C_FOUND_AT, "MultiGasSensor", MGS_SENSOR_ADDR);
AddLog(LOG_LEVEL_DEBUG);
return true;
} else {
return false;
}
}
char* measure_gas(int gas_type, char* buffer)
{
float f = gas.calcGas(gas_type);
dtostrfd(f, 2, buffer);
return buffer;
}
#ifdef USE_WEBSERVER
const char HTTP_MGS_GAS[] PROGMEM = "%s{s}MGS %s{m}%s " D_UNIT_PARTS_PER_MILLION "{e}"; // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
#endif // USE_WEBSERVER
void MGSShow(boolean json)
{
char buffer[25];
if (json) {
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"MGS\":{\"NH3\":%s"), mqtt_data, measure_gas(NH3, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"CO\":%s"), mqtt_data, measure_gas(CO, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"NO2\":%s"), mqtt_data, measure_gas(NO2, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"C3H8\":%s"), mqtt_data, measure_gas(C3H8, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"C4H10\":%s"), mqtt_data, measure_gas(C4H10, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"CH4\":%s"), mqtt_data, measure_gas(GAS_CH4, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"H2\":%s"), mqtt_data, measure_gas(H2, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"C2H5OH\":%s}"), mqtt_data, measure_gas(C2H5OH, buffer));
#ifdef USE_WEBSERVER
} else {
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_MGS_GAS, mqtt_data, "NH3", measure_gas(NH3, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_MGS_GAS, mqtt_data, "CO", measure_gas(CO, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_MGS_GAS, mqtt_data, "NO2", measure_gas(NO2, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_MGS_GAS, mqtt_data, "C3H8", measure_gas(C3H8, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_MGS_GAS, mqtt_data, "C4H10", measure_gas(C4H10, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_MGS_GAS, mqtt_data, "CH4", measure_gas(GAS_CH4, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_MGS_GAS, mqtt_data, "H2", measure_gas(H2, buffer));
snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_MGS_GAS, mqtt_data, "C2H5OH", measure_gas(C2H5OH, buffer));
#endif // USE_WEBSERVER
}
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
#define XSNS_19
boolean Xsns19(byte function)
{
boolean result = false;
static int detected = false;
if (i2c_flg) {
switch (function) {
case FUNC_INIT:
// MGSInit();
break;
case FUNC_PREP_BEFORE_TELEPERIOD:
detected = MGSPrepare();
break;
case FUNC_JSON_APPEND:
if (detected) MGSShow(1);
break;
#ifdef USE_WEBSERVER
case FUNC_WEB_APPEND:
if (detected) MGSShow(0);
break;
#endif // USE_WEBSERVER
}
}
return result;
}
#endif // USE_MGS
#endif // USE_I2C