From b87cd4d80663c9dac6ae6413a2efb6e7a529c574 Mon Sep 17 00:00:00 2001
From: coelner <waenger@gmail.com>
Date: Wed, 26 Jul 2017 17:43:44 +0200
Subject: [PATCH 1/3] selectable i2c Pins for esp8266 and other

---
 BH1750.cpp   | 14 ++++++++++++++
 BH1750.h     |  4 ++++
 bh1750.patch | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 58 insertions(+)
 create mode 100644 bh1750.patch

diff --git a/BH1750.cpp b/BH1750.cpp
index e7a2f30..ed48cf1 100644
--- a/BH1750.cpp
+++ b/BH1750.cpp
@@ -56,6 +56,20 @@ BH1750::BH1750(byte addr) {
 
 }
 
+/**
+ * Begin I2C and configure sensor
+ * @param SDA Date SCL Clock mode Measurment mode
+ */
+#if defined(ARDUINO_ARCH_ESP8266)
+void BH1750::begin(uint8_t SDA, uint8_t SCL, uint8_t mode) {
+
+  // allow config of pins
+  Wire.begin(SDA,SCL);
+
+  // Configure sensor in specified mode
+  configure(mode);
+}
+#endif
 
 /**
  * Begin I2C and configure sensor
diff --git a/BH1750.h b/BH1750.h
index 947283d..90dc4df 100644
--- a/BH1750.h
+++ b/BH1750.h
@@ -60,6 +60,10 @@ class BH1750 {
 
   public:
     BH1750 (byte addr = 0x23);
+    #if defined(ARDUINO_ARCH_ESP8266)
+    /* ==== On esp8266 it is possible to define I2C pins ==== */
+    void begin (uint8_t SDA, uint8_t SCL, uint8_t mode = BH1750_CONTINUOUS_HIGH_RES_MODE);
+    #endif
     void begin (uint8_t mode = BH1750_CONTINUOUS_HIGH_RES_MODE);
     void configure (uint8_t mode);
     uint16_t readLightLevel(void);
diff --git a/bh1750.patch b/bh1750.patch
new file mode 100644
index 0000000..eb36042
--- /dev/null
+++ b/bh1750.patch
@@ -0,0 +1,40 @@
+diff --git a/BH1750.cpp b/BH1750.cpp
+index e7a2f30..ed48cf1 100644
+--- a/BH1750.cpp
++++ b/BH1750.cpp
+@@ -56,6 +56,20 @@ BH1750::BH1750(byte addr) {
+ 
+ }
+ 
++/**
++ * Begin I2C and configure sensor
++ * @param SDA Date SCL Clock mode Measurment mode
++ */
++#if defined(ARDUINO_ARCH_ESP8266)
++void BH1750::begin(uint8_t SDA, uint8_t SCL, uint8_t mode) {
++
++  // allow config of pins
++  Wire.begin(SDA,SCL);
++
++  // Configure sensor in specified mode
++  configure(mode);
++}
++#endif
+ 
+ /**
+  * Begin I2C and configure sensor
+diff --git a/BH1750.h b/BH1750.h
+index 947283d..90dc4df 100644
+--- a/BH1750.h
++++ b/BH1750.h
+@@ -60,6 +60,10 @@ class BH1750 {
+ 
+   public:
+     BH1750 (byte addr = 0x23);
++    #if defined(ARDUINO_ARCH_ESP8266)
++    /* ==== On esp8266 it is possible to define I2C pins ==== */
++    void begin (uint8_t SDA, uint8_t SCL, uint8_t mode = BH1750_CONTINUOUS_HIGH_RES_MODE);
++    #endif
+     void begin (uint8_t mode = BH1750_CONTINUOUS_HIGH_RES_MODE);
+     void configure (uint8_t mode);
+     uint16_t readLightLevel(void);

From 8f38378a4b2f837946e25f1c2a02cdb1b5a3c433 Mon Sep 17 00:00:00 2001
From: coelner <waenger@gmail.com>
Date: Wed, 26 Jul 2017 17:47:57 +0200
Subject: [PATCH 2/3] selectable i2c Pins for esp8266 and other

---
 bh1750.patch | 40 ----------------------------------------
 1 file changed, 40 deletions(-)
 delete mode 100644 bh1750.patch

diff --git a/bh1750.patch b/bh1750.patch
deleted file mode 100644
index eb36042..0000000
--- a/bh1750.patch
+++ /dev/null
@@ -1,40 +0,0 @@
-diff --git a/BH1750.cpp b/BH1750.cpp
-index e7a2f30..ed48cf1 100644
---- a/BH1750.cpp
-+++ b/BH1750.cpp
-@@ -56,6 +56,20 @@ BH1750::BH1750(byte addr) {
- 
- }
- 
-+/**
-+ * Begin I2C and configure sensor
-+ * @param SDA Date SCL Clock mode Measurment mode
-+ */
-+#if defined(ARDUINO_ARCH_ESP8266)
-+void BH1750::begin(uint8_t SDA, uint8_t SCL, uint8_t mode) {
-+
-+  // allow config of pins
-+  Wire.begin(SDA,SCL);
-+
-+  // Configure sensor in specified mode
-+  configure(mode);
-+}
-+#endif
- 
- /**
-  * Begin I2C and configure sensor
-diff --git a/BH1750.h b/BH1750.h
-index 947283d..90dc4df 100644
---- a/BH1750.h
-+++ b/BH1750.h
-@@ -60,6 +60,10 @@ class BH1750 {
- 
-   public:
-     BH1750 (byte addr = 0x23);
-+    #if defined(ARDUINO_ARCH_ESP8266)
-+    /* ==== On esp8266 it is possible to define I2C pins ==== */
-+    void begin (uint8_t SDA, uint8_t SCL, uint8_t mode = BH1750_CONTINUOUS_HIGH_RES_MODE);
-+    #endif
-     void begin (uint8_t mode = BH1750_CONTINUOUS_HIGH_RES_MODE);
-     void configure (uint8_t mode);
-     uint16_t readLightLevel(void);

From 895c0e6dd4cf2124a8a63285eb54204e01e13f8c Mon Sep 17 00:00:00 2001
From: coelner <waenger@gmail.com>
Date: Tue, 1 Aug 2017 20:59:39 +0200
Subject: [PATCH 3/3] =?UTF-8?q?=09ge=C3=A4ndert:=20=20=20=20=20=20=20examp?=
 =?UTF-8?q?les/BH1750test/BH1750test.ino?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 examples/BH1750test/BH1750test.ino | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/examples/BH1750test/BH1750test.ino b/examples/BH1750test/BH1750test.ino
index 63bcb60..9a9b2b2 100644
--- a/examples/BH1750test/BH1750test.ino
+++ b/examples/BH1750test/BH1750test.ino
@@ -9,8 +9,8 @@
 
     VCC -> 5V (3V3 on Arduino Due, Zero, MKR1000, etc)
     GND -> GND
-    SCL -> SCL (A5 on Arduino Uno, Leonardo, etc or 21 on Mega and Due)
-    SDA -> SDA (A4 on Arduino Uno, Leonardo, etc or 20 on Mega and Due)
+    SCL -> SCL (A5 on Arduino Uno, Leonardo, etc or 21 on Mega and Due on esp8266 free selectable)
+    SDA -> SDA (A4 on Arduino Uno, Leonardo, etc or 20 on Mega and Due on esp8266 free selectable)
     ADD -> (not connected) or GND
 
   ADD pin uses to set sensor I2C address. If it has voltage greater or equal to
@@ -29,6 +29,7 @@ void setup(){
 
   Serial.begin(9600);
   lightMeter.begin();
+  //lightMeter.begin(begin(D4, D3)); //use this line on a esp8266
   Serial.println(F("BH1750 Test"));
 
 }