mirror of https://github.com/arendst/Tasmota.git
118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
/*
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xsns_19_mgs.ino - Xadow and Grove Mutichannel Gas sensor support for Tasmota
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Copyright (C) 2021 Palich2000 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_MGS
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/*********************************************************************************************\
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* Grove - Multichannel Gas Sensor
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* http://wiki.seeed.cc/Grove-Multichannel_Gas_Sensor/
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*
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* https://github.com/Seeed-Studio/Mutichannel_Gas_Sensor.git
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\*********************************************************************************************/
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#define XSNS_19 19
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#define XI2C_17 17 // See I2CDEVICES.md
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#ifndef MGS_SENSOR_ADDR
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#define MGS_SENSOR_ADDR 0x04 // Default Mutichannel Gas sensor i2c address
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#endif
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#include "MutichannelGasSensor.h"
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bool mgs_detected = false;
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void MGSPrepare(void)
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{
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if (!I2cSetDevice(MGS_SENSOR_ADDR)) { return; }
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gas.begin(MGS_SENSOR_ADDR);
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if (!gas.isError()) {
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I2cSetActiveFound(MGS_SENSOR_ADDR, "MultiGas");
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mgs_detected = true;
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}
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}
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char* measure_gas(int gas_type, char* buffer)
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{
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float f = gas.calcGas(gas_type);
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dtostrfd(f, 2, buffer);
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return buffer;
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}
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#ifdef USE_WEBSERVER
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const char HTTP_MGS_GAS[] PROGMEM = "{s}MGS %s{m}%s " D_UNIT_PARTS_PER_MILLION "{e}"; // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
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#endif // USE_WEBSERVER
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void MGSShow(bool json)
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{
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char buffer[33];
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if (json) {
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ResponseAppend_P(PSTR(",\"MGS\":{\"NH3\":%s"), measure_gas(NH3, buffer));
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ResponseAppend_P(PSTR(",\"CO\":%s"), measure_gas(CO, buffer));
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ResponseAppend_P(PSTR(",\"NO2\":%s"), measure_gas(NO2, buffer));
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ResponseAppend_P(PSTR(",\"C3H8\":%s"), measure_gas(C3H8, buffer));
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ResponseAppend_P(PSTR(",\"C4H10\":%s"), measure_gas(C4H10, buffer));
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ResponseAppend_P(PSTR(",\"CH4\":%s"), measure_gas(GAS_CH4, buffer));
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ResponseAppend_P(PSTR(",\"H2\":%s"), measure_gas(H2, buffer));
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ResponseAppend_P(PSTR(",\"C2H5OH\":%s}"), measure_gas(C2H5OH, buffer));
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#ifdef USE_WEBSERVER
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} else {
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WSContentSend_PD(HTTP_MGS_GAS, "NH3", measure_gas(NH3, buffer));
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WSContentSend_PD(HTTP_MGS_GAS, "CO", measure_gas(CO, buffer));
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WSContentSend_PD(HTTP_MGS_GAS, "NO2", measure_gas(NO2, buffer));
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WSContentSend_PD(HTTP_MGS_GAS, "C3H8", measure_gas(C3H8, buffer));
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WSContentSend_PD(HTTP_MGS_GAS, "C4H10", measure_gas(C4H10, buffer));
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WSContentSend_PD(HTTP_MGS_GAS, "CH4", measure_gas(GAS_CH4, buffer));
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WSContentSend_PD(HTTP_MGS_GAS, "H2", measure_gas(H2, buffer));
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WSContentSend_PD(HTTP_MGS_GAS, "C2H5OH", measure_gas(C2H5OH, buffer));
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#endif // USE_WEBSERVER
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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 Xsns19(uint8_t function)
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{
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if (!I2cEnabled(XI2C_17)) { return false; }
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bool result = false;
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if (FUNC_INIT == function) {
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MGSPrepare();
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}
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else if (mgs_detected) {
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switch (function) {
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case FUNC_JSON_APPEND:
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MGSShow(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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MGSShow(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_MGS
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#endif // USE_I2C
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