Add files via upload

src/INA219_WE.cpp

@@ -17,15 +17,20 @@
 #include "INA219_WE.h"
 
 INA219_WE::INA219_WE(int addr){
+#ifndef USE_TINY_WIRE_M_
     _wire = &Wire;
+#endif
     i2cAddress = addr;   
 }
 
 INA219_WE::INA219_WE(){
+#ifndef USE_TINY_WIRE_M_
     _wire = &Wire;
+#endif
     i2cAddress = 0x40;   
 }
 
+#ifndef USE_TINY_WIRE_M_
 INA219_WE::INA219_WE(TwoWire *w, int addr){
     _wire = w;
     i2cAddress = addr; 
@@ -35,6 +40,7 @@ INA219_WE::INA219_WE(TwoWire *w){
     _wire = w;
     i2cAddress = 0x40;
 }
+#endif
     
 bool INA219_WE::init(){ 
     if( !reset_INA219() )
@@ -230,6 +236,7 @@ void INA219_WE::powerUp(){
     delayMicroseconds(40);  
 }   
 
+#ifndef USE_TINY_WIRE_M_
 uint8_t INA219_WE::writeRegister(uint8_t reg, uint16_t val){
   _wire->beginTransmission(i2cAddress);
   uint8_t lVal = val & 255;
@@ -254,6 +261,29 @@ uint16_t INA219_WE::readRegister(uint8_t reg){
   regValue = (MSByte<<8) + LSByte;
   return regValue;
 }
-    
+#else
+uint8_t INA219_WE::writeRegister(uint8_t reg, uint16_t val){
+  TinyWireM.beginTransmission(i2cAddress);
+  uint8_t lVal = val & 255;
+  uint8_t hVal = val >> 8;
+  TinyWireM.send(reg);
+  TinyWireM.send(hVal);
+  TinyWireM.send(lVal);
+  return TinyWireM.endTransmission();
+}
+  
+uint16_t INA219_WE::readRegister(uint8_t reg){
+  uint8_t MSByte = 0, LSByte = 0;
+  uint16_t regValue = 0;
+  TinyWireM.beginTransmission(i2cAddress);
+  TinyWireM.send(reg);
+  TinyWireM.endTransmission();
+  TinyWireM.requestFrom(i2cAddress,2);
+  MSByte = TinyWireM.receive();
+  LSByte = TinyWireM.receive();
+  regValue = (MSByte<<8) + LSByte;
+  return regValue;
+}
+#endif
 
 

src/INA219_WE.h

@@ -24,8 +24,14 @@
 #else
  #include "WProgram.h"
 #endif
+#include "ina219_config.h"
 
-#include <Wire.h>
+#ifdef USE_TINY_WIRE_M_
+ #include <TinyWireM.h>
+#endif
+#ifndef USE_TINY_WIRE_M_
+ #include <Wire.h>
+#endif
 
 /* registers */
 #define INA219_ADDRESS      0x40
@@ -80,8 +86,10 @@ public:
     // Constructors: if not passed 0x40 / Wire will be set as address / wire object
     INA219_WE(int addr);
     INA219_WE();
+#ifndef USE_TINY_WIRE_M_   
     INA219_WE(TwoWire *w, int addr);
     INA219_WE(TwoWire *w);
+#endif
   
     bool init();
     bool reset_INA219();
@@ -109,7 +117,9 @@ private:
     INA219_MEASURE_MODE deviceMeasureMode;
     INA219_PGAIN devicePGain;
     INA219_BUS_RANGE deviceBusRange;
+#ifndef USE_TINY_WIRE_M_    
     TwoWire *_wire;
+#endif
     int i2cAddress;
     uint16_t calVal;
     uint16_t calValCorrected;

src/ina219_config.h

+#ifndef INA219_CONFIG_H_
+#define INA219_CONFIG_H_
+/* Uncomment the following line to use TinyWireM instead of Wire */
+//#define USE_TINY_WIRE_M_
+#endif
\ No newline at end of file