diff --git a/dev/bme280/README.bme280 b/dev/bme280/README.bme280
new file mode 100644
index 000000000..7ce35cb1d
--- /dev/null
+++ b/dev/bme280/README.bme280
@@ -0,0 +1,26 @@
+
+Contiki implementation for Bosch Sensortec BME280 sensor. 
+BME280 is compact and fast and includes temp, RH, and pressure. 
+Chip uses I2C or SPI. This implementation and follow Contiki 
+device API and I2C.
+
+For better performance, less chip warm up and less I2C transactions
+burst read is recommended. Here all T/RH/P is read in one single 
+I2C read and kept the measurements have the same time. 
+
+The burst read is stored in struct bme280_mea which accessible from 
+the Contiki. Also note that the full chip resolution is available. 
+The variables are overscaled to give the app full controlover resolution.
+
+See bme280.h
+
+The pressure can be calculated with 32 or 64. The define BME280_64BIT
+controls this. Typically in your project-conf.h
+ 
+Implemented according to datasheet Rev 1.1.
+
+Limitations:
+Implementation implements Weather Mode which uses forced one-shot 
+mode no oversampling nor filters and reads all T/RH/P in one read.
+
+
diff --git a/dev/bme280/bme280-sensor.c b/dev/bme280/bme280-sensor.c
new file mode 100644
index 000000000..0a15cfaa4
--- /dev/null
+++ b/dev/bme280/bme280-sensor.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2015, Copyright Robert Olsson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ *
+ * Author  : Robert Olsson rolss@kth.se/robert@radio-sensors.com
+ * Created : 2016-09-14
+ */
+
+#include <stdlib.h>
+#include "contiki.h"
+#include "lib/sensors.h"
+#include "dev/bme280/bme280.h"
+#include "dev/bme280/bme280-sensor.h"
+
+const struct sensors_sensor bme280_sensor;
+
+static int
+value(int type)
+{
+
+  /* Read all measurements with one burst read */
+  bme280_read(BME280_MODE_WEATHER);
+
+  /* Return a la Contiki API */
+  switch(type) {
+
+  case BME280_SENSOR_TEMP:
+    return bme280_mea.t_overscale100 / 100;
+
+  case BME280_SENSOR_HUMIDITY:
+    return bme280_mea.h_overscale1024>>10;
+
+  case BME280_SENSOR_PRESSURE:
+    /* Scale down w. 10 not to overslow the signed int */
+#ifdef BME280_64BIT
+    return bme280_mea.p_overscale256/(256*10);
+#else
+    return bme280_mea.p/10;
+#endif
+  }
+  return 0;
+}
+
+static int
+status(int type)
+{
+  return 0;
+}
+
+static int
+configure(int type, int c)
+{
+  bme280_init(BME280_MODE_WEATHER);
+}
+SENSORS_SENSOR(bme280_sensor, "bme280", value, configure, status);
diff --git a/dev/bme280/bme280-sensor.h b/dev/bme280/bme280-sensor.h
new file mode 100644
index 000000000..92dfae0d1
--- /dev/null
+++ b/dev/bme280/bme280-sensor.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2015, Copyright Robert Olsson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ *
+ * Author  : Robert Olsson rolss@kth.se/robert@radio-sensors.com
+ * Created : 2016-09-14
+ */
+
+#ifndef BME280_SENSOR_H_
+#define BME280_SENSOR_H_
+
+#include "lib/sensors.h"
+#include "lib/sensors.h"
+#include "bme280.h"
+
+extern const struct sensors_sensor bme280_sensor;
+
+#define BME280_SENSOR_TEMP         0
+#define BME280_SENSOR_HUMIDITY     1
+#define BME280_SENSOR_PRESSURE     2
+
+#endif /* BME280_SENSOR_H_ */
diff --git a/dev/bme280/bme280.c b/dev/bme280/bme280.c
new file mode 100644
index 000000000..7377acaf6
--- /dev/null
+++ b/dev/bme280/bme280.c
@@ -0,0 +1,272 @@
+/*
+ * Copyright (c) 2015, Copyright Robert Olsson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ *
+ * Author  : Robert Olsson rolss@kth.se/robert@radio-sensors.com
+ * Created : 2016-09-14
+ */
+
+/**
+ * \file
+ *        Basic functions for Bosch BME280 based on datasheel Rev 1.1
+ */
+
+#include "contiki.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <math.h>
+#include "bme280.h"
+#include "dev/bme280-arch.h"
+
+static struct {
+  unsigned short dig_t1;
+  signed short dig_t2;
+  signed short dig_t3;
+  unsigned short dig_p1;
+  signed short dig_p2;
+  signed short dig_p3;
+  signed short dig_p4;
+  signed short dig_p5;
+  signed short dig_p6;
+  signed short dig_p7;
+  signed short dig_p8;
+  signed short dig_p9;
+  unsigned char dig_h1;
+  signed short dig_h2;
+  unsigned char dig_h3;
+  signed short dig_h4;
+  signed short dig_h5;
+  signed char dig_h6;
+  int32_t t_fine;
+  uint8_t mode;
+} bm;
+
+int32_t
+bme280_t_overscale100(int32_t ut)
+{
+  int32_t v1, v2, t;
+
+  v1 = ((((ut >> 3) - ((int32_t)bm.dig_t1 << 1))) *
+        ((int32_t)bm.dig_t2)) >> 11;
+
+  v2 = (((((ut >> 4) - ((int32_t)bm.dig_t1)) * ((ut >> 4) -
+                                                ((int32_t)bm.dig_t1))) >> 12) * ((int32_t)bm.dig_t3)) >> 14;
+
+  bm.t_fine = v1 + v2;
+  t = (bm.t_fine * 5 + 128) >> 8;
+  return t;
+}
+#ifdef BME280_32BIT
+static uint32_t
+bme280_p(int32_t up)
+{
+  int32_t v1, v2;
+  uint32_t p;
+
+  v1 = (((int32_t)bm.t_fine) >> 1) - (int32_t)64000;
+  v2 = (((v1 >> 2) * (v1 >> 2)) >> 11) * ((int32_t)bm.dig_p6);
+  v2 = v2 + ((v1 * ((int32_t)bm.dig_p5)) << 1);
+  v2 = (v2 >> 2) + (((int32_t)bm.dig_p4) << 16);
+
+  v1 = (((bm.dig_p3 * (((v1 >> 2) * (v1 >> 2)) >> 13)) >> 3) +
+        ((((int32_t)bm.dig_p2) * v1) >> 1)) >> 18;
+
+  v1 = ((((32768 + v1)) * ((int32_t)bm.dig_p1)) >> 15);
+
+  if(v1 == 0) {
+    return 0;
+  }
+
+  p = (((uint32_t)(((int32_t)1048576) - up) - (v2 >> 12))) * 3125;
+
+  if(p < 0x80000000) {
+    p = (p << 1) / ((uint32_t)v1);
+  } else {
+    p = (p / (uint32_t)v1) * 2;
+  }
+
+  v1 = (((int32_t)bm.dig_p9) * ((int32_t)(((p >> 3) * (p >> 3)) >> 13))) >> 12;
+  v2 = (((int32_t)(p >> 2)) * ((int32_t)bm.dig_p8)) >> 13;
+  p = (uint32_t)((int32_t)p + ((v1 + v2 + bm.dig_p7) >> 4));
+  return p;
+}
+#else
+
+static uint32_t
+bme280_p_overscale256(int32_t up)
+{
+  int64_t v1, v2, p;
+
+  v1 = ((int64_t)bm.t_fine) - 128000;
+  v2 = v1 * v1 * (int64_t)bm.dig_p6;
+  v2 = v2 + ((v1 * (int64_t)bm.dig_p5) << 17);
+  v2 = v2 + (((int64_t)bm.dig_p4) << 35);
+  v1 = ((v1 * v1 * (int64_t)bm.dig_p3) >> 8) + ((v1 * (int64_t)bm.dig_p2) << 12);
+  v1 = (((((int64_t)1) << 47) + v1)) * ((int64_t)bm.dig_p1) >> 33;
+
+  if(v1 == 0) {
+    return 0;
+  }
+
+  p = 1048576 - up;
+  p = (((p << 31) - v2) * 3125) / v1;
+  v1 = (((int64_t)bm.dig_p9) * (p >> 13) * (p >> 13)) >> 25;
+  v2 = (((int64_t)bm.dig_p8) * p) >> 19;
+  p = (((p + v1 + v2) >> 8) + (((int64_t)bm.dig_p7) << 4));
+  return (uint32_t)p;
+}
+#endif
+
+static uint32_t
+bme280_h_overscale1024(int32_t uh)
+{
+  int32_t v1;
+  v1 = (bm.t_fine - ((int32_t)76800));
+  v1 = (((((uh << 14) - (((int32_t)bm.dig_h4) << 20) - (((int32_t)bm.dig_h5) * v1)) + ((int32_t)16384)) >> 15)
+        * (((((((v1 * ((int32_t)bm.dig_h6)) >> 10) * (((v1 * ((int32_t)bm.dig_h3)) >> 11) + ((int32_t)32768)))
+              >> 10) + ((int32_t)2097152)) * ((int32_t)bm.dig_h2) + 8192) >> 14));
+  v1 = (v1 - (((((v1 >> 15) * (v1 >> 15)) >> 7) * ((int32_t)bm.dig_h1)) >> 4));
+  v1 = (v1 < 0 ? 0 : v1);
+  v1 = (v1 > 419430400 ? 419430400 : v1);
+  return (uint32_t)(v1 >> 12);
+}
+void
+bme280_init(uint8_t mode)
+{
+  uint8_t buf[26];
+
+  /* Do not mess with other chips */
+  i2c_read_mem(BME280_ADDR, 0xD0, buf, 1);
+  if(buf[0] != BME280_CHIP_ID) {
+    return;
+  }
+
+  i2c_write_mem(BME280_ADDR, BME280_CNTL_RESET, 0xB6);
+  clock_delay_msec(BME280_MAX_WAIT);
+
+  memset(buf, 0, sizeof(buf));
+
+  /* Burst read of all calibration part 1 */
+  i2c_read_mem(BME280_ADDR, BME280_DIG_T1_ADDR, buf, sizeof(buf));
+  bm.dig_t1 = ((uint16_t)buf[1] << 8) | (uint16_t)buf[0];
+  bm.dig_t2 = ((int16_t)buf[3] << 8) | (uint16_t)buf[2];
+  bm.dig_t3 = ((int16_t)buf[5] << 8) | (uint16_t)buf[4];
+  bm.dig_p1 = ((uint16_t)buf[7] << 8) | (uint16_t)buf[6];
+  bm.dig_p2 = ((int16_t)buf[9] << 8) | (uint16_t)buf[8];
+  bm.dig_p3 = ((int16_t)buf[11] << 8) | (uint16_t)buf[10];
+  bm.dig_p4 = ((int16_t)buf[13] << 8) | (uint16_t)buf[12];
+  bm.dig_p5 = ((int16_t)buf[15] << 8) | (uint16_t)buf[14];
+  bm.dig_p6 = ((int16_t)buf[17] << 8) | (uint16_t)buf[16];
+  bm.dig_p7 = ((int16_t)buf[19] << 8) | (uint16_t)buf[18];
+  bm.dig_p8 = ((int16_t)buf[21] << 8) | (uint16_t)buf[20];
+  bm.dig_p9 = ((int16_t)buf[23] << 8) | (uint16_t)buf[22];
+  /* A0 not used */
+  bm.dig_h1 = (unsigned char)buf[25];
+
+  /* Burst read of all calibration part 2 */
+  i2c_read_mem(BME280_ADDR, BME280_DIG_H2_ADDR, buf, 8);
+  bm.dig_h2 = ((int16_t)buf[1] << 8) | (uint16_t)buf[0];
+  bm.dig_h3 = (unsigned char)buf[2];
+  bm.dig_h4 = ((int16_t)buf[3] << 4) | (((uint16_t)buf[4]) & 0xF);
+  bm.dig_h5 = ((int16_t)buf[6] << 4) | (((uint16_t)buf[5]) & 0xF);
+  bm.dig_h6 = (unsigned char)buf[7];
+
+  bm.mode = mode;
+}
+void
+bme280_read(uint8_t mode)
+{
+  int32_t ut, uh, up;
+  uint8_t buf[8], sleep;
+  uint16_t i;
+  memset(buf, 0, sizeof(buf));
+
+  /* Are we initilized and in the right mode? */
+  if(mode == BME280_MODE_NONE || mode != bm.mode) {
+    return;
+  }
+
+  ut = uh = up = 0;
+
+  /* Weather mode. See sectiom 3.5 Datasheet */
+  if(mode == BME280_MODE_WEATHER) {
+    /* Humidity oversampling *1 */
+    i2c_write_mem(BME280_ADDR, BME280_CNTL_HUM, 0x01);
+
+    /*  00100111  0x27 oversampling *1 for t and p plus normal mode */
+    /* 0.5 ms -- no filter -- no SPI */
+    i2c_write_mem(BME280_ADDR, BME280_CONTROL, 0x00);
+
+    /*  00100110  0x26 oversampling *1 for t and p  plus forced mode */
+    /* Trigger measurement needed for every time in forced mode */
+    i2c_write_mem(BME280_ADDR, BME280_CNTL_MEAS, 0x26);
+    /* Wait to get into sleep mode == measurement done */
+    for(i = 0; i < BME280_MAX_WAIT; i++) {
+      i2c_read_mem(BME280_ADDR, BME280_CNTL_MEAS, &sleep, 1);
+      sleep = sleep& 0x03;
+      if(sleep== 0) {
+        break;
+      } else {
+        clock_delay_msec(1);
+      }
+    }
+    if(i == BME280_MAX_WAIT) {
+      return; /* error  wait*/
+    }
+  } else {  /* if(mode == BME280_MODE_WEATHER) */
+    return; /* error mode*/
+  }
+
+  /* Burst read of all measurements */
+  i2c_read_mem(BME280_ADDR, BME280_PRESS, buf, 8);
+  ut = (uint32_t)(buf[3]) << 12 | (uint32_t)(buf[4]) << 4 | (uint32_t)buf[5] >> 4;
+  up = (uint32_t)(buf[0]) << 12 | (uint32_t)(buf[1]) << 4 | (uint32_t)buf[2] >> 4;
+  uh = (uint32_t)(buf[6]) << 8 | (uint32_t)buf[7];
+
+  bme280_mea.t_overscale100 = bme280_t_overscale100(ut);
+  bme280_mea.h_overscale1024 = bme280_h_overscale1024(uh);
+#ifdef BME280_64BIT
+  bme280_mea.p_overscale256 = bme280_p_overscale256(up);
+#else
+  bme280_mea.p = bme280_p(up);
+#endif
+
+#if TEST
+  printf("T_BME280=%5.2f", (double)bme280_mea.t_overscale100 / 100.);
+  printf(" RH_BME280=%5.2f ", (double)bme280_mea.h_overscale1024 / 1024.);
+#ifdef BME280_64BIT
+  printf(" P_BME280=%5.2f\n", (double)bme280_mea.p_overscale256 / 256.);
+#else
+  printf(" P_BME280=%5.2f\n", (double)bme280_mea.p);
+#endif
+#endif
+}
diff --git a/dev/bme280/bme280.h b/dev/bme280/bme280.h
new file mode 100644
index 000000000..9486738c3
--- /dev/null
+++ b/dev/bme280/bme280.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2015, Copyright Robert Olsson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ *
+ * Author  : Robert Olsson rolss@kth.se/robert@radio-sensors.com
+ * 
+ * Created : 2016-09-14
+ */
+
+/**
+ * \file
+ *         Definitions for the Bosch BME280 based on datasheel Rev 1.1
+ */
+
+#ifndef BME280_H
+#define BME280_H
+
+#ifndef BME280_32BIT
+#define BME280_64BIT
+#endif
+
+void bme280_init(uint8_t mode);
+void bme280_read(uint8_t mode);
+
+#define  BME280_ADDR   (0x77 << 1) /* Alternative 0x76 */
+
+/* Diffrent BOSCH chip id's */
+#define BMP085_CHIP_ID 0x55  /* And also BMP180 */
+#define BMP280_CHIP_ID 0x58
+#define BME280_CHIP_ID 0x60
+
+/* Address map */
+#define BME280_DIG_T1_ADDR 0x88
+#define BME280_DIG_T2_ADDR 0x8A
+#define BME280_DIG_T3_ADDR 0x8C
+#define BME280_DIG_P1_ADDR 0x8E
+#define BME280_DIG_P2_ADDR 0x90
+#define BME280_DIG_P3_ADDR 0x92
+#define BME280_DIG_P4_ADDR 0x94
+#define BME280_DIG_P5_ADDR 0x96
+#define BME280_DIG_P6_ADDR 0x98
+#define BME280_DIG_P7_ADDR 0x9A
+#define BME280_DIG_P8_ADDR 0x9C
+#define BME280_DIG_P9_ADDR 0x9E
+#define BME280_DIG_H1_ADDR 0xA1
+#define BMP_CHIP_ID_ADDR 0xD0
+#define BME280_CNTL_RESET 0xE0
+#define BME280_DIG_H2_ADDR 0xE1
+#define BME280_DIG_H3_ADDR 0xE3
+#define BME280_DIG_H4_ADDR 0xE4
+#define BME280_DIG_H5_ADDR 0xE5
+#define BME280_DIG_H6_ADDR 0xE7
+#define BME280_CNTL_HUM 0xF2
+#define BME280_STATUS 0xF3
+#define BME280_CNTL_MEAS 0xF4
+#define BME280_CONTROL 0xF5
+#define BME280_PRESS 0xF7
+
+/* Function modes outlined in datasheet */
+#define BME280_MODE_NONE 0
+#define BME280_MODE_WEATHER 1
+#define BME280_MODE_HUMIDITY 2
+#define BME280_MODE_INDOOR_NAVIGATION 3
+#define BME280_MODE_GAMING 4
+
+#define BME280_MAX_WAIT 300 /* ms. Forced mode max wait */
+#define BME280_STARTUP_TIME 2 /* ms */
+
+struct {
+  int32_t t_overscale100;
+  uint32_t h_overscale1024;
+#ifdef BME280_64BIT
+  uint32_t p_overscale256;
+#else
+  uint32_t p;
+#endif
+} bme280_mea;
+
+#endif /* BME280_H */