diff --git a/I2CDEVICES.md b/I2CDEVICES.md
index 0ceec1c6c..c572f50a1 100644
--- a/I2CDEVICES.md
+++ b/I2CDEVICES.md
@@ -77,7 +77,9 @@ Index | Define | Driver | Device | Address(es) | Description
52 | USE_HP303B | xsns_73 | HP303B | 0x76 - 0x77 | Pressure and temperature sensor
53 | USE_MLX90640 | xdrv_84 | MLX90640 | 0x33 | IR array temperature sensor
54 | USE_VL53L1X | xsns_77 | VL53L1X | 0x29 | Time-of-flight (ToF) distance sensor
- 55 | USE_EZOPH | xsns_78 | EZOPH | 0x61 - 0x70 | pH Sensor
- 55 | USE_EZOORP | xsns_78 | EZOORP | 0x61 - 0x70 | ORP Sensor
- 55 | USE_EZORTD | xsns_78 | EZORTD | 0x61 - 0x70 | Temperature Sensor
- 55 | USE_EZOHUM | xsns_78 | EZORTD | 0x61 - 0x70 | Humidity Sensor
+ 55 | USE_EZOPH | xsns_78 | EZOPH | 0x61 - 0x70 | pH sensor
+ 55 | USE_EZOORP | xsns_78 | EZOORP | 0x61 - 0x70 | ORP sensor
+ 55 | USE_EZORTD | xsns_78 | EZORTD | 0x61 - 0x70 | Temperature sensor
+ 55 | USE_EZOHUM | xsns_78 | EZOHUM | 0x61 - 0x70 | Humidity sensor
+ 55 | USE_EZOEC | xsns_78 | EZOEC | 0x61 - 0x70 | Electric conductivity sensor
+ 55 | USE_EZOCO2 | xsns_78 | EZOCO2 | 0x61 - 0x70 | CO2 sensor
diff --git a/tasmota/my_user_config.h b/tasmota/my_user_config.h
index 50414dba7..aedd2024d 100644
--- a/tasmota/my_user_config.h
+++ b/tasmota/my_user_config.h
@@ -567,6 +567,11 @@
// #define USE_EZORTD // [I2cDriver55] Enable support for EZO's RTD sensor (+0k2 code) - Shared EZO code required for any EZO device (+1k2 code)
// #define USE_EZOHUM // [I2cDriver55] Enable support for EZO's HUM sensor (+0k3 code) - Shared EZO code required for any EZO device (+1k2 code)
// #define USE_EZOEC // [I2cDriver55] Enable support for EZO's EC sensor (+0k3 code) - Shared EZO code required for any EZO device (+1k2 code)
+// #define USE_EZOCO2 // [I2cDriver55] Enable support for EZO's CO2 sensor (+0k3 code) - Shared EZO code required for any EZO device (+1k2 code)
+
+ #if defined(USE_EZOPH) || defined(USE_EZOORP) || defined(USE_EZORTD) || defined(USE_EZOHUM) || defined(USE_EZOEC) || defined(USE_EZOCO2)
+ #define USE_EZO
+ #endif
// #define USE_DISPLAY // Add I2C Display Support (+2k code)
#define USE_DISPLAY_MODES1TO5 // Enable display mode 1 to 5 in addition to mode 0
diff --git a/tasmota/support_features.ino b/tasmota/support_features.ino
index 3ed654ebf..f4ee77603 100644
--- a/tasmota/support_features.ino
+++ b/tasmota/support_features.ino
@@ -642,8 +642,9 @@ void GetFeatures(void)
#if defined(USE_I2C) && defined(USE_EZOEC)
feature7 |= 0x00000008; // xsns_78_ezoec.ino
#endif
-
-// feature7 |= 0x00000010;
+#if defined(USE_I2C) && defined(USE_EZOCO2)
+ feature7 |= 0x00000010;
+#endif
// feature7 |= 0x00000020;
// feature7 |= 0x00000040;
// feature7 |= 0x00000080;
diff --git a/tasmota/tasmota_configurations.h b/tasmota/tasmota_configurations.h
index 358defe4e..2a9aeed50 100644
--- a/tasmota/tasmota_configurations.h
+++ b/tasmota/tasmota_configurations.h
@@ -132,6 +132,12 @@
//#define USE_EZORTD // [I2cDriver55] Enable support for EZO's RTD sensor (+0k2 code) - Shared EZO code required for any EZO device (+1k2 code)
//#define USE_EZOHUM // [I2cDriver55] Enable support for EZO's HUM sensor (+0k3 code) - Shared EZO code required for any EZO device (+1k2 code)
//#define USE_EZOEC // [I2cDriver55] Enable support for EZO's EC sensor (+0k3 code) - Shared EZO code required for any EZO device (+1k2 code)
+//#define USE_EZOCO2 // [I2cDriver55] Enable support for EZO's CO2 sensor (+0k3 code) - Shared EZO code required for any EZO device (+1k2 code)
+
+ #if defined(USE_EZOPH) || defined(USE_EZOORP) || defined(USE_EZORTD) || defined(USE_EZOHUM) || defined(USE_EZOEC) \
+ defined(USE_EZOCO2)
+ #define USE_EZO
+ #endif
#define USE_MHZ19 // Add support for MH-Z19 CO2 sensor (+2k code)
#define USE_SENSEAIR // Add support for SenseAir K30, K70 and S8 CO2 sensor (+2k3 code)
diff --git a/tasmota/xsns_78_ezo.ino b/tasmota/xsns_78_ezo.ino
index 1507a36c4..72d22cf6f 100644
--- a/tasmota/xsns_78_ezo.ino
+++ b/tasmota/xsns_78_ezo.ino
@@ -17,7 +17,7 @@
along with this program. If not, see .
*/
#ifdef USE_I2C
-#if defined(USE_EZOPH) || defined(USE_EZOORP) || defined(USE_EZORTD) || defined(USE_EZOHUM) || defined(USE_EZOEC)
+#if defined(USE_EZO)
#define D_EZO_DELAY 300 // Minimum delay for any instruction
#define D_EZO_MAX_BUF 40 // Maximum response
@@ -106,5 +106,5 @@ protected:
-#endif // USE_EZO*
+#endif // USE_EZO
#endif // USE_I2C
diff --git a/tasmota/xsns_78_ezoco2.ino b/tasmota/xsns_78_ezoco2.ino
new file mode 100644
index 000000000..df23a05cf
--- /dev/null
+++ b/tasmota/xsns_78_ezoco2.ino
@@ -0,0 +1,57 @@
+/*
+ xsns_78_ezoco2.ino - EZO CO2 I2C CO2 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 .
+*/
+
+#ifdef USE_I2C
+#ifdef USE_EZOCO2
+
+#define EZO_CO2_READ_LATENCY 900
+
+struct EZOCO2 : public EZOStruct {
+ EZOCO2(uint32_t addr) : EZOStruct(addr), CO2(0) {}
+
+ virtual void ProcessMeasurement(void)
+ {
+ char data[D_EZO_MAX_BUF];
+
+ EZOStruct::ProcessMeasurement(data, sizeof(data), EZO_CO2_READ_LATENCY);
+
+ // sensor has a 10s warmup period
+ if (uptime >= 10) {
+ CO2 = atoi(data);
+ }
+ }
+
+ virtual void Show(bool json, const char *name)
+ {
+ if (json) {
+ ResponseAppend_P(PSTR(",\"%s\":{\"" D_JSON_CO2 "\":%d}" ), name, CO2);
+ }
+#ifdef USE_WEBSERVER
+ else {
+ WSContentSend_PD(HTTP_SNS_CO2, name, CO2);
+#endif // USE_WEBSERVER
+ }
+ }
+
+private:
+ uint16_t CO2;
+};
+
+#endif // USE_EZOCO2
+#endif // USE_I2C
diff --git a/tasmota/xsns_78_xezo.ino b/tasmota/xsns_78_xezo.ino
index 659d3efa3..2284410de 100644
--- a/tasmota/xsns_78_xezo.ino
+++ b/tasmota/xsns_78_xezo.ino
@@ -18,7 +18,7 @@
*/
#ifdef USE_I2C
-#if defined(USE_EZOPH) || defined(USE_EZOORP) || defined(USE_EZORTD) || defined(USE_EZOHUM) || defined(USE_EZOEC)
+#if defined(USE_EZO)
#define XSNS_78 78
#define XI2C_55 55 // See I2CDEVICES.md
@@ -65,7 +65,7 @@ const char EZO_RTD_NAME[] PROGMEM = "RTD";
#endif
//const char EZO_PMP_NAME[] PROGMEM = "PMP";
//const char EZO_FLO_NAME[] PROGMEM = "FLO";
-//const char EZO_CO2_NAME[] PROGMEM = "CO2";
+const char EZO_CO2_NAME[] PROGMEM = "pH";
//const char EZO_PRS_NAME[] PROGMEM = "PRS";
//const char EZO_O2_NAME[] PROGMEM = "O2";
#ifdef USE_EZOHUM
@@ -104,7 +104,13 @@ const char *const EZOSupport[EZO_ADDR_n] PROGMEM = {
EZO_EMPTY,
EZO_EMPTY,
+
+#ifdef USE_EZOCO2
+ EZO_CO2_NAME,
+#else
EZO_EMPTY,
+#endif
+
EZO_EMPTY,
EZO_EMPTY,
EZO_EMPTY,
@@ -265,6 +271,11 @@ private:
sensor[count] = new EZORTD(addr);
break;
#endif
+#ifdef USE_EZOCO2
+ case EZO_CO2:
+ sensor[count] = new EZOCO2(addr);
+ break;
+#endif
#ifdef USE_EZOHUM
case EZO_HUM:
sensor[count] = new EZOHUM(addr);
@@ -324,5 +335,5 @@ bool Xsns78(uint8_t function)
return false;
}
-#endif // USE_EZO*
+#endif // USE_EZO
#endif // USE_I2C