Now the brzo_i2c library on ESP8266 supported

examples/BME_280_BRZO_I2C_Test/BME_280_BRZO_I2C_Test.ino

@@ -1,9 +1,13 @@
 /*
-BME280 I2C Test.ino
+BME280 BRZO I2C Test.ino
 This code shows how to record data from the BME280 environmental sensor
-using I2C interface. This file is an example file, part of the Arduino
-BME280 library.
+using I2C interface and https://github.com/pasko-zh/brzo_i2c library
+on ESP8266.
+This file is an example file, part of the Arduino BME280 library.
+
 Copyright (C) 2016  Tyler Glenn
+Forked by Alex Shavlovsky
+to support https://github.com/pasko-zh/brzo_i2c library on ESP8266.
 
 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
@@ -26,24 +30,23 @@ Sensor              ->  Board
 -----------------------------
 Vin (Voltage In)    ->  3.3V
 Gnd (Ground)        ->  Gnd
-SDA (Serial Data)   ->  A4 on Uno/Pro-Mini, 20 on Mega2560/Due, 2 Leonardo/Pro-Micro
-SCK (Serial Clock)  ->  A5 on Uno/Pro-Mini, 21 on Mega2560/Due, 3 Leonardo/Pro-Micro
+SDA (Serial Data)   ->  D2 on ESP8266
+SCK (Serial Clock)  ->  D1 on ESP8266
 
  */
 
 /* ==== Includes ==== */
-#include <BME280I2C.h>
-#include <Wire.h>             // Needed for legacy versions of Arduino.
+#include <BME280BRZO_I2C.h>
 /* ====  END Includes ==== */
 
 /* ==== Defines ==== */
 #define SERIAL_BAUD 115200
 /* ==== END Defines ==== */
 
 /* ==== Global Variables ==== */
-BME280I2C bme;                   // Default : forced mode, standby time = 1000 ms
+BME280BRZO_I2C bme;           // Default : forced mode, standby time = 1000 ms
                               // Oversampling = pressure ×1, temperature ×1, humidity ×1, filter off,
-bool metric = false;
+bool metric = true;
 /* ==== END Global Variables ==== */
 
 

src/BME280BRZO_I2C.cpp

@@ -1,8 +1,11 @@
 /*
-BME280I2CI2C.cpp
-This code records data from the BME280I2C sensor and provides an API.
-This file is part of the Arduino BME280I2C library.
+BME280BRZO_I2C.cpp
+This code records data from the BME280 sensor and provides an API.
+This file is part of the Arduino BME280 library.
+
 Copyright (C) 2016  Tyler Glenn
+Forked by Alex Shavlovsky
+to support https://github.com/pasko-zh/brzo_i2c library on ESP8266.
 
 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
@@ -22,18 +25,17 @@ Last Updated: Jan 1 2016. - Happy New year!
 
 This header must be included in any derived code or copies of the code.
 
-Based on the data sheet provided by Bosch for the BME280I2C environmental sensor,
+Based on the data sheet provided by Bosch for the BME280BRZO_I2C environmental sensor,
 calibration code based on algorithms providedBosch, some unit conversations courtesy
 of www.endmemo.com, altitude equation courtesy of NOAA, and dew point equation
 courtesy of Brian McNoldy at https://andrew.rsmas.miami.edu.
  */
 
-#include <Wire.h>
-
-#include "BME280I2C.h"
+#include "brzo_i2c.h"
+#include "BME280BRZO_I2C.h"
 
 /****************************************************************/
-BME280I2C::BME280I2C
+BME280BRZO_I2C::BME280BRZO_I2C
 (
   uint8_t tosr,
   uint8_t hosr,
@@ -50,73 +52,61 @@ BME280I2C::BME280I2C
 
 
 /****************************************************************/
-bool BME280I2C::WriteRegister
+bool BME280BRZO_I2C::WriteRegister
 (
   uint8_t addr,
   uint8_t data
 )
 {
-  Wire.beginTransmission(bme_280_addr);
-  Wire.write(addr);
-  Wire.write(data);
-  Wire.endTransmission();
-
-  return true; // TODO: Chech return values from wire calls.
+    uint8_t bf[2];
+    bf[0] = addr;
+    bf[1] = data;
+    brzo_i2c_start_transaction(bme_280_addr, I2C_CLOCK_RATE);
+    brzo_i2c_write(bf, 2, false);
+    return (brzo_i2c_end_transaction()==0);
 }
 
-
 /****************************************************************/
-bool BME280I2C::ReadRegister
+bool BME280BRZO_I2C::ReadRegister
 (
   uint8_t addr,
   uint8_t data[],
   uint8_t length
 )
 {
-  uint8_t ord(0);
-
-  Wire.beginTransmission(bme_280_addr);
-  Wire.write(addr);
-  Wire.endTransmission();
-
-  Wire.requestFrom(bme_280_addr, length);
-
-  while(Wire.available())
-  {
-    data[ord++] = Wire.read();
-  }
-
-  return ord == length;
+    brzo_i2c_start_transaction(bme_280_addr, I2C_CLOCK_RATE);
+    brzo_i2c_write(&addr, 1, true);
+    brzo_i2c_read(data, length, false);
+    brzo_i2c_end_transaction();
+    return (brzo_i2c_end_transaction()==0);
 }
 
 
 /****************************************************************/
 #if defined(ARDUINO_ARCH_ESP8266)
-bool BME280I2C::begin
+bool BME280BRZO_I2C::begin
 (
   int SDA,
   int SCL
 )
 {
   // allow config of pins
-  Wire.begin(SDA,SCL);
-
+  brzo_i2c_setup(SDA,SCL,I2C_ACK_TIMEOUT);
   return BME280::Initialize();
 }
 
 
 /****************************************************************/
-bool BME280I2C::begin()
+bool BME280BRZO_I2C::begin()
 {
   return Initialize();
 }
 #endif
 
 
 /****************************************************************/
-bool BME280I2C::Initialize()
+bool BME280BRZO_I2C::Initialize()
 {
-  Wire.begin();
-
+  brzo_i2c_setup(D2,D1,I2C_ACK_TIMEOUT);
   return BME280::Initialize();
 }

src/BME280BRZO_I2C.h

@@ -1,8 +1,11 @@
 /*
-BME280I2C.h
+BME280BRZO_I2C.h
 This code records data from the BME280 sensor and provides an API.
 This file is part of the Arduino BME280 library.
+
 Copyright (C) 2016  Tyler Glenn
+Forked by Alex Shavlovsky
+to support https://github.com/pasko-zh/brzo_i2c library on ESP8266.
 
 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
@@ -26,22 +29,30 @@ This header must be included in any derived code or copies of the code.
 Based on the data sheet provided by Bosch for the Bme280 environmental sensor.
  */
 
-#ifndef TG_BME_280_I2C_H
-#define TG_BME_280_I2C_H
+#ifndef BME280BRZO_I2C_H
+#define BME280BRZO_I2C_H
+
+#ifndef I2C_CLOCK_RATE
+#define I2C_CLOCK_RATE 400
+#endif
+
+#ifndef I2C_ACK_TIMEOUT
+#define I2C_ACK_TIMEOUT 2000
+#endif
 
 #include "BME280.h"
 
 //////////////////////////////////////////////////////////////////
-/// BME280I2C - I2C Implementation of BME280.
-class BME280I2C: public BME280
+/// BME280BRZO_I2C - I2C Implementation of BME280.
+class BME280BRZO_I2C: public BME280
 {
 
 public:
 
   ///////////////////////////////////////////////////////////////
   /// Constructor used to create the class. All parameters have 
   /// default values.
-  BME280I2C(
+  BME280BRZO_I2C(
     uint8_t tosr = 0x1,
     uint8_t hosr = 0x1,
     uint8_t posr = 0x1,
@@ -87,4 +98,4 @@ class BME280I2C: public BME280
     uint8_t length);
 
 };
-#endif // TG_BME_280_I2C_H
+#endif // BME280BRZO_I2C_H