Jack Cosslett / Mbed 2 deprecated frdm_gpio

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Dependencies:   USBDevice mbed

Diff: ina226.cpp

Revision:
1:5dc94660e311
Parent:
0:4318f664a8e1
--- a/ina226.cpp	Wed Dec 02 18:01:38 2015 +0000
+++ b/ina226.cpp	Thu Mar 17 14:53:03 2016 +0000
@@ -1,6 +1,12 @@
 #include "ina226.h"
 
-INA226::INA226(I2C* theI2C, char address)
+INA226::INA226(I2C& theI2C, char address)
+    :i2c(theI2C), i2cAddress(address)
+{
+    init();
+}
+
+void INA226::init()
 {
     //set up config register            //256 averages          //continuous shunt voltage conversion
     short write_byte = CONF_DEFAULT |_BV(AVG2) | _BV(AVG0) | _BV(MODE3) | _BV(MODE1);
@@ -20,7 +26,7 @@
     cmd[1] = stc.u8[1];
     cmd[2] = stc.u8[0];
     
-    i2c->write(i2cAddress,cmd,3);
+    i2c.write(i2cAddress,cmd,3);
 }
 
 short INA226::read(INA226REG reg)
@@ -29,11 +35,17 @@
     
     char cmd[2];
     cmd[0] = reg;
-    i2c->write(i2cAddress,cmd,1);
+    i2c.write(i2cAddress,cmd,1);
     
-    i2c->read(i2cAddress, cmd, 2);
+    i2c.read(i2cAddress, cmd, 2);
     stc.u8[1] = cmd[0];
     stc.u8[0] = cmd[1];
     
     return (stc.u16);
+}
+
+float INA226::getCurrent()
+{
+    short curr = read(REG_CURR);
+    return curr/20;
 }
\ No newline at end of file