mirror of https://github.com/arendst/Tasmota.git
137 lines
3.9 KiB
C++
137 lines
3.9 KiB
C++
/*
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xsns_66_iAQ.ino - Support for iAQ-Core - Indoor Air Quality Sensor Module
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Copyright (C) 2020 Christian Baars 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_IAQ
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#define XSNS_66 66
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#define XI2C_46 46 // See I2CDEVICES.md
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#define I2_ADR_IAQ 0x5a // collides with MLX90614 and maybe others
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#define IAQ_STATUS_OK 0x00
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#define IAQ_STATUS_BUSY 0x01
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#define IAQ_STATUS_WARM 0x10
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#define IAQ_STATUS_ERR 0x80
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#define IAQ_STATUS_I2C_ERR 0xFF
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struct {
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int32_t resistance;
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uint16_t pred;
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uint16_t Tvoc;
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uint8_t status;
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bool ready;
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} iAQ;
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void IAQ_Init(void)
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{
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if (!I2cSetDevice(I2_ADR_IAQ)) { return; }
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I2cSetActiveFound(I2_ADR_IAQ, "IAQ");
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iAQ.ready = true;
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}
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void IAQ_Read(void)
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{
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uint8_t buf[9];
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buf[2] = IAQ_STATUS_I2C_ERR; // populate entry with error code
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Wire.requestFrom((uint8_t)I2_ADR_IAQ,sizeof(buf));
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for( uint32_t i=0; i<9; i++ ) {
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buf[i]= Wire.read();
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}
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// AddLog_P(LOG_LEVEL_DEBUG, "iAQ: buffer %x %x %x %x %x %x %x %x %x ", buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7], buf[8]);
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iAQ.pred = (buf[0]<<8) + buf[1];
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iAQ.status = buf[2];
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iAQ.resistance = ((uint32_t)buf[3]<<24) + ((uint32_t)buf[4]<<16) + ((uint32_t)buf[5]<<8) + (uint32_t)buf[6];
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iAQ.Tvoc = (buf[7]<<8) + buf[8];
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}
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/*********************************************************************************************\
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* Presentation
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\*********************************************************************************************/
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#ifdef USE_WEBSERVER
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const char HTTP_SNS_IAQ[] PROGMEM =
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"{s}iAQ-Core " D_ECO2 "{m}%d " D_UNIT_PARTS_PER_MILLION "{e}" // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
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"{s}iAQ-Core " D_TVOC "{m}%d " D_UNIT_PARTS_PER_BILLION "{e}";
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const char HTTP_SNS_IAQ_ERROR[] PROGMEM =
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"{s}iAQ-Core {m} %s {e}";
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#endif
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void IAQ_Show(uint8_t json)
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{
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IAQ_Read();
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if (json) {
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if (iAQ.status!=IAQ_STATUS_OK){
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AddLog_P(LOG_LEVEL_INFO, PSTR("iAQ: " D_ERROR " %x" ),iAQ.status);
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return;
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}
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else {
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ResponseAppend_P(PSTR(",\"IAQ\":{\"" D_JSON_ECO2 "\":%u,\"" D_JSON_TVOC "\":%u,\"" D_JSON_RESISTANCE "\":%u}"), iAQ.pred, iAQ.Tvoc, iAQ.resistance);
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#ifdef USE_DOMOTICZ
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if (0 == TasmotaGlobal.tele_period) DomoticzSensor(DZ_AIRQUALITY, iAQ.pred);
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#endif // USE_DOMOTICZ
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}
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#ifdef USE_WEBSERVER
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} else {
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switch(iAQ.status){
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case IAQ_STATUS_OK:
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WSContentSend_PD(HTTP_SNS_IAQ, iAQ.pred, iAQ.Tvoc);
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break;
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case IAQ_STATUS_WARM:
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WSContentSend_PD(HTTP_SNS_IAQ_ERROR, D_START);
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break;
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default:
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WSContentSend_PD(HTTP_SNS_IAQ_ERROR, D_ERROR);
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}
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#endif
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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 Xsns66(byte function)
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{
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if (!I2cEnabled(XI2C_46)) { return false; }
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bool result = false;
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if (FUNC_INIT == function) {
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IAQ_Init();
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}
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else if (iAQ.ready) {
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switch (function) {
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case FUNC_JSON_APPEND:
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IAQ_Show(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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IAQ_Show(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_IAQ
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#endif // USE_I2C
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