diff --git a/lib/hardware/GwM5Grove.in b/lib/hardware/GwM5Grove.in
index 6d9ce21a..75dad36a 100644
--- a/lib/hardware/GwM5Grove.in
+++ b/lib/hardware/GwM5Grove.in
@@ -143,3 +143,22 @@
     #error "both serial devices already in use"
   #endif
 #endif
+
+#GROVE
+#ifdef GWBMP280G1$GS$
+  #ifndef M5_GROOVEIIC$GS$
+    #define M5_GROOVEIIC$GS$
+  #endif
+  GROOVE_IIC(BMP280,$Z$,1)
+  #define _GWBMP280
+#endif
+
+#GROVE
+#ifdef GWBMP280G2$GS$
+  #ifndef M5_GROOVEIIC$GS$
+    #define M5_GROOVEIIC$GS$
+  #endif
+  GROOVE_IIC(BMP280,$Z$,2)
+  #define _GWBMP280
+#endif
+
diff --git a/lib/iictask/GwBME280.cpp b/lib/iictask/GwBME280.cpp
index 12dcc7e8..cc241134 100644
--- a/lib/iictask/GwBME280.cpp
+++ b/lib/iictask/GwBME280.cpp
@@ -68,16 +68,20 @@ class BME280Config : public IICSensorBase{
         if (!device)
             return;
         GwLog *logger = api->getLogger();
+        float pressure = N2kDoubleNA;
+        float temperature = N2kDoubleNA;
+        float humidity = N2kDoubleNA;
+        float computed = N2kDoubleNA;
         if (prAct)
         {
-            float pressure = device->readPressure();
-            float computed = pressure + prOff;
+            pressure = device->readPressure();
+            computed = pressure + prOff;
             LOG_DEBUG(GwLog::DEBUG, "%s measure %2.0fPa, computed %2.0fPa", prefix.c_str(), pressure, computed);
             sendN2kPressure(api, *this, computed, counterId);
         }
         if (tmAct)
         {
-            float temperature = device->readTemperature(); // offset is handled internally
+            temperature = device->readTemperature(); // offset is handled internally
             temperature = CToKelvin(temperature);
             LOG_DEBUG(GwLog::DEBUG, "%s measure temp=%2.1f", prefix.c_str(), temperature);
             sendN2kTemperature(api, *this, temperature, counterId);
@@ -88,6 +92,10 @@ class BME280Config : public IICSensorBase{
             LOG_DEBUG(GwLog::DEBUG, "%s read humid=%02.0f", prefix.c_str(), humidity);
             sendN2kHumidity(api, *this, humidity, counterId);
         }
+        if (tmAct || prAct || (huAct && sensorId == 0x60))
+        {
+            sendN2kEnvironmentalParameters(api, *this, temperature, humidity, computed,counterId);
+        }
     }
     #define CFG280(prefix) \
         CFG_GET(prAct,prefix); \
diff --git a/lib/iictask/GwBMP280.cpp b/lib/iictask/GwBMP280.cpp
new file mode 100644
index 00000000..11878bfd
--- /dev/null
+++ b/lib/iictask/GwBMP280.cpp
@@ -0,0 +1,184 @@
+#include "GwBMP280.h"
+#ifdef _GWIIC
+    #if defined(GWBMP280) || defined(GWBMP28011) || defined(GWBMP28012)|| defined(GWBMP28021)|| defined(GWBMP28022)
+        #define _GWBMP280
+    #else
+        #undef _GWBMP280
+    #endif
+#else
+    #undef _GWBMP280
+    #undef GWBMP280
+    #undef GWBMP28011
+    #undef GWBMP28012
+    #undef GWBMP28021
+    #undef GWBMP28022
+#endif
+#ifdef _GWBMP280
+    #include <Adafruit_BMP280.h>
+#endif
+#ifdef _GWBMP280
+#define TYPE "BMP280"
+#define PRFX1 TYPE "11"
+#define PRFX2 TYPE "12"
+#define PRFX3 TYPE "21"
+#define PRFX4 TYPE "22"
+class BMP280Config : public IICSensorBase{
+    public:
+    bool prAct=true;
+    bool tmAct=true;
+    tN2kTempSource tmSrc=tN2kTempSource::N2kts_InsideTemperature;
+    tN2kPressureSource prSrc=tN2kPressureSource::N2kps_Atmospheric;
+    tN2kHumiditySource huSrc=tN2kHumiditySource::N2khs_Undef;
+    String tmNam="Temperature";
+    String prNam="Pressure";
+    float tmOff=0;
+    float prOff=0;
+    Adafruit_BMP280 *device=nullptr;
+    uint32_t sensorId=-1;
+    BMP280Config(GwApi * api, const String &prfx):SensorBase(TYPE,api,prfx){
+        }
+    virtual bool isActive(){return prAct||tmAct;}
+    virtual bool initDevice(GwApi *api,TwoWire *wire){
+        GwLog *logger=api->getLogger();
+	//Wire.begin(GWIIC_SDA,GWIIC_SCL);        
+        device= new Adafruit_BMP280(wire);
+        if (! device->begin(addr)){
+            LOG_DEBUG(GwLog::ERROR,"unable to initialize %s at %d",prefix.c_str(),addr);
+            delete device;
+            device=nullptr;
+            return false;
+        }
+        sensorId=device->sensorID();
+        LOG_DEBUG(GwLog::LOG, "initialized %s at %d, sensorId 0x%x", prefix.c_str(), addr, sensorId);
+        return (sensorId == 0x56 || sensorId == 0x57 || sensorId == 0x58)?true:false;
+    }
+    virtual bool preinit(GwApi * api){
+        GwLog *logger=api->getLogger();
+        LOG_DEBUG(GwLog::LOG,"%s configured",prefix.c_str());
+        api->addCapability(prefix,"true");
+        addPressureXdr(api,*this);
+        addTempXdr(api,*this);
+        return isActive();
+    }
+    virtual void measure(GwApi *api, TwoWire *wire, int counterId)
+    {
+        if (!device)
+            return;
+        GwLog *logger = api->getLogger();
+        float pressure = N2kDoubleNA;
+        float temperature = N2kDoubleNA;
+        float humidity = N2kDoubleNA; 
+        float computed = N2kDoubleNA;
+        if (prAct)
+        {
+            pressure = device->readPressure();
+            computed = pressure + prOff;
+            LOG_DEBUG(GwLog::DEBUG, "%s measure %2.0fPa, computed %2.0fPa", prefix.c_str(), pressure, computed);
+            sendN2kPressure(api, *this, computed, counterId);
+        }
+        if (tmAct)
+        {
+            temperature = device->readTemperature(); // offset is handled internally
+            temperature = CToKelvin(temperature);
+            LOG_DEBUG(GwLog::DEBUG, "%s measure temp=%2.1f", prefix.c_str(), temperature);
+            sendN2kTemperature(api, *this, temperature, counterId);
+        }
+        if (tmAct || prAct )
+        {
+            sendN2kEnvironmentalParameters(api, *this, temperature, humidity, computed,counterId);
+        }
+    }
+    #define CFGBMP280(prefix) \
+        CFG_GET(prAct,prefix); \
+        CFG_GET(tmAct,prefix);\
+        CFG_GET(tmSrc,prefix);\
+        CFG_GET(iid,prefix);\
+        CFG_GET(intv,prefix);\
+        CFG_GET(tmNam,prefix);\
+        CFG_GET(prNam,prefix);\
+        CFG_GET(tmOff,prefix);\
+        CFG_GET(prOff,prefix);
+
+    virtual void readConfig(GwConfigHandler *cfg) override
+    {
+        if (prefix == PRFX1)
+        {
+            busId = 1;
+            addr = 0x76;
+            CFGBMP280(BMP28011);
+            ok=true;
+        }
+        if (prefix == PRFX2)
+        {
+            busId = 1;
+            addr = 0x77;
+            CFGBMP280(BMP28012);
+            ok=true;
+        }
+        if (prefix == PRFX3)
+        {
+            busId = 2;
+            addr = 0x76;
+            CFGBMP280(BMP28021);
+            ok=true;
+        }
+        if (prefix == PRFX4)
+        {
+            busId = 2;
+            addr = 0x77;
+            CFGBMP280(BMP28022);
+        }
+        intv *= 1000;
+    }
+};
+
+static IICSensorBase::Creator creator([](GwApi *api, const String &prfx){
+    return new BMP280Config(api,prfx);
+});
+IICSensorBase::Creator registerBMP280(GwApi *api,IICSensorList &sensors){
+    #if defined(GWBMP280) || defined(GWBMP28011)
+    {   
+        auto *cfg=creator(api,PRFX1);
+        //BMP280Config *cfg=new BMP280Config(api,PRFX1);
+        sensors.add(api,cfg);
+        CHECK_IIC1();
+        #pragma message "GWBMP28011 defined"
+    }
+    #endif
+    #if defined(GWBMP28012)
+    {
+        auto *cfg=creator(api,PRFX2);
+        //BMP280Config *cfg=new BMP280Config(api,PRFX2);
+        sensors.add(api,cfg);
+        CHECK_IIC1();
+        #pragma message "GWBMP28012 defined"
+    }
+    #endif
+    #if defined(GWBMP28021)
+    {
+        auto *cfg=creator(api,PRFX3);
+        //BMP280Config *cfg=new BMP280Config(api,PRFX3);
+        sensors.add(api,cfg);
+        CHECK_IIC2();
+        #pragma message "GWBMP28021 defined"
+    }
+    #endif
+    #if defined(GWBMP28022)
+    {
+        auto *cfg=creator(api,PRFX4);
+        //BMP280Config *cfg=new BMP280Config(api,PRFX4);
+        sensors.add(api,cfg);
+        CHECK_IIC1();
+        #pragma message "GWBMP28022 defined"
+    }
+    #endif
+    return creator;
+}
+#else
+IICSensorBase::Creator registerBMP280(GwApi *api,IICSensorList &sensors){
+   return IICSensorBase::Creator();
+}
+
+#endif
+
+
diff --git a/lib/iictask/GwBMP280.h b/lib/iictask/GwBMP280.h
new file mode 100644
index 00000000..97fd4fe1
--- /dev/null
+++ b/lib/iictask/GwBMP280.h
@@ -0,0 +1,6 @@
+#ifndef _GWBMP280_H
+#define _GWBMP280_H
+#include "GwIicSensors.h"
+IICSensorBase::Creator registerBMP280(GwApi *api,IICSensorList &sensors);
+#endif
+
diff --git a/lib/iictask/GwIicSensors.h b/lib/iictask/GwIicSensors.h
index dcb7f3ff..bade5d0b 100644
--- a/lib/iictask/GwIicSensors.h
+++ b/lib/iictask/GwIicSensors.h
@@ -102,6 +102,15 @@ void sendN2kTemperature(GwApi *api,CFG &cfg,double value, int counterId){
     api->increment(counterId,cfg.prefix+String("temp"));
 }
 
+template <class CFG>
+void sendN2kEnvironmentalParameters(GwApi *api,CFG &cfg,double tmValue, double huValue, double prValue, int counterId){
+    tN2kMsg msg;
+    SetN2kEnvironmentalParameters(msg,1,cfg.tmSrc,tmValue,cfg.huSrc,huValue,prValue);
+    api->sendN2kMessage(msg);
+    api->increment(counterId,cfg.prefix+String("hum"));
+    api->increment(counterId,cfg.prefix+String("press"));
+    api->increment(counterId,cfg.prefix+String("temp"));
+}
 
 #ifndef _GWI_IIC1
     #define CHECK_IIC1() checkDef(GWIIC_SCL,GWIIC_SDA)
@@ -114,4 +123,4 @@ void sendN2kTemperature(GwApi *api,CFG &cfg,double value, int counterId){
     #define CHECK_IIC2()
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/iictask/GwIicTask.cpp b/lib/iictask/GwIicTask.cpp
index fee671f2..22a7167f 100644
--- a/lib/iictask/GwIicTask.cpp
+++ b/lib/iictask/GwIicTask.cpp
@@ -21,6 +21,7 @@ static std::vector<IICGrove> iicGroveList;
 #include "GwIicSensors.h"
 #include "GwHardware.h"
 #include "GwBME280.h"
+#include "GwBMP280.h"
 #include "GwQMP6988.h"
 #include "GwSHT3X.h"
 #include <map>
@@ -92,6 +93,7 @@ void initIicTask(GwApi *api){
     creators.push_back(registerSHT3X(api,sensors));
     creators.push_back(registerQMP6988(api,sensors));
     creators.push_back(registerBME280(api,sensors));
+    creators.push_back(registerBMP280(api,sensors));
     #ifdef _GWI_IIC1
         addGroveItems(creators,api,sensors,"1",_GWI_IIC1);    
     #endif
diff --git a/lib/iictask/config.json b/lib/iictask/config.json
index ec7d6130..54da57e7 100644
--- a/lib/iictask/config.json
+++ b/lib/iictask/config.json
@@ -530,5 +530,204 @@
                 }
             }
         ]
+    },
+    {
+        "type": "array",
+        "name": "BMP280",
+        "replace": [
+            {
+                "b": "1",
+                "i": "11",
+                "n": "93"
+            },
+            {
+                "b": "1",
+                "i": "12",
+                "n": "92"
+            },
+            {
+                "b": "2",
+                "i": "21",
+                "n": "103"
+            },
+            {
+                "b": "2",
+                "i": "22",
+                "n": "102"
+            }
+        ],
+        "children": [
+            {
+                "name": "BMP280$itmAct",
+                "label": "BMP280-$i Temp",
+                "type": "boolean",
+                "default": "true",
+                "description": "Enable the $i. I2C BMP280 temp sensor (bus $b)",
+                "category": "iicsensors$b",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            },
+            {
+                "name": "BMP280$itmSrc",
+                "label": "BMP280-$i Temp Type",
+                "type": "list",
+                "default": "2",
+                "description": "the NMEA2000 source type for the temperature",
+                "list": [
+                    {
+                        "l": "SeaTemperature",
+                        "v": "0"
+                    },
+                    {
+                        "l": "OutsideTemperature",
+                        "v": "1"
+                    },
+                    {
+                        "l": "InsideTemperature",
+                        "v": "2"
+                    },
+                    {
+                        "l": "EngineRoomTemperature",
+                        "v": "3"
+                    },
+                    {
+                        "l": "MainCabinTemperature",
+                        "v": "4"
+                    },
+                    {
+                        "l": "LiveWellTemperature",
+                        "v": "5"
+                    },
+                    {
+                        "l": "BaitWellTemperature",
+                        "v": "6"
+                    },
+                    {
+                        "l": "RefridgerationTemperature",
+                        "v": "7"
+                    },
+                    {
+                        "l": "HeatingSystemTemperature",
+                        "v": "8"
+                    },
+                    {
+                        "l": "DewPointTemperature",
+                        "v": "9"
+                    },
+                    {
+                        "l": "ApparentWindChillTemperature",
+                        "v": "10"
+                    },
+                    {
+                        "l": "TheoreticalWindChillTemperature",
+                        "v": "11"
+                    },
+                    {
+                        "l": "HeatIndexTemperature",
+                        "v": "12"
+                    },
+                    {
+                        "l": "FreezerTemperature",
+                        "v": "13"
+                    },
+                    {
+                        "l": "ExhaustGasTemperature",
+                        "v": "14"
+                    },
+                    {
+                        "l": "ShaftSealTemperature",
+                        "v": "15"
+                    }
+                ],
+                "category": "iicsensors$b",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            },
+            {
+                "name": "BMP280$itmOff",
+                "label": "BMP280-$i Temperature Offset",
+                "type": "number",
+                "description": "offset (in °) to be added to the BMP280 temperature measurements",
+                "default": "0",
+                "category": "iicsensors$b",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            },
+            {
+                "name": "BMP280$iprAct",
+                "label": "BMP280-$i Pressure",
+                "type": "boolean",
+                "default": "true",
+                "description": "Enable the $i. I2C BMP280 pressure sensor (bus $b)",
+                "category": "iicsensors$b",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            },
+            {
+                "name": "BMP280$iprOff",
+                "label": "BMP280 Pressure Offset",
+                "type": "number",
+                "description": "offset (in pa) to be added to the BMP280 pressure measurements",
+                "default": "0",
+                "category": "iicsensors$b",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            },
+            {
+                "name": "BMP280$iiid",
+                "label": "BMP280-$i N2K iid",
+                "type": "number",
+                "default": "$n",
+                "description": "the N2K instance id for the BMP280 Temperature",
+                "category": "iicsensors$b",
+                "min": 0,
+                "max": 253,
+                "check": "checkMinMax",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            },
+            {
+                "name": "BMP280$iintv",
+                "label": "BMP280-$i Interval",
+                "type": "number",
+                "default": 2,
+                "description": "Interval(s) to query BME280 Temperature (1...300)",
+                "category": "iicsensors$b",
+                "min": 1,
+                "max": 300,
+                "check": "checkMinMax",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            },
+            {
+                "name": "BMP280$itmNam",
+                "label": "BMP280-$i Temp XDR",
+                "type": "String",
+                "default": "BTemp$i",
+                "description": "set the XDR transducer name for the BMP280 Temperature, leave empty to disable NMEA0183 XDR ",
+                "category": "iicsensors$b",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            },
+            {
+                "name": "BMP280$iprNam",
+                "label": "BMP280-$i Pressure XDR",
+                "type": "String",
+                "default": "BPressure$i",
+                "description": "set the XDR transducer name for the BMP280 Pressure, leave empty to disable NMEA0183 XDR",
+                "category": "iicsensors$b",
+                "capabilities": {
+                    "BMP280$i": "true"
+                }
+            }
+        ]
     }
-]
\ No newline at end of file
+]
diff --git a/lib/iictask/platformio.ini b/lib/iictask/platformio.ini
index db82892d..a7857972 100644
--- a/lib/iictask/platformio.ini
+++ b/lib/iictask/platformio.ini
@@ -35,3 +35,16 @@ build_flags=
     -D M5_GROOVEIIC
     -D M5_CAN_KIT
     ${env.build_flags}
+
+[env:m5stack-atom-envbps]
+extends = sensors
+board = m5stack-atom
+lib_deps =
+    ${env.lib_deps}
+    ${sensors.lib_deps}
+build_flags=
+    #-D M5_ENVBPS
+    -D GWBMP280
+    -D M5_GROOVEIIC
+    -D M5_CAN_KIT
+    ${env.build_flags}
diff --git a/platformio.ini b/platformio.ini
index b249ef8c..f774c6bc 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -60,8 +60,9 @@ lib_deps =
 	Wire
 	SPI
 	adafruit/Adafruit BME280 Library @ 2.2.2
+	adafruit/Adafruit BMP280 Library@^2.6.8
 	adafruit/Adafruit BusIO @ 1.14.5
-    adafruit/Adafruit Unified Sensor @ 1.1.13
+	adafruit/Adafruit Unified Sensor @ 1.1.13
 
 [env:m5stack-atom]
 board = m5stack-atom