Diff: ohms.cpp

Revision:

0:fe642275688d

Child:

2:1c29960a42c6

Child:

3:b4592b0ae1e3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ohms.cpp	Mon Mar 07 23:27:37 2016 +0000
@@ -0,0 +1,40 @@
+#include "mbed.h"
+//#include "ohms.h"
+ 
+
+float volDivideCalcRatio(long r1, long r2) {
+  return ((float) r2 / (float) (r1 + r2));
+}
+float voltDivideAdjVolt(float vin, long r1, long r2) {
+  float ratio = ((float) r2 / (float) (r1 + r2));
+  return vin / ratio;
+}
+
+
+
+
+long calcResistV(long refResistR1, float maxV, float measuredV) {
+  float VDrop = maxV - measuredV;
+  float dropRatio =  measuredV / VDrop;  
+  return  (long) (refResistR1 * dropRatio);
+}
+
+
+/*
+
+adjVoltDivide::adjVoltDivide(long r1, long r2, float refVolt) {
+    _r1 = r1;
+    _r2 = r2;
+    _refVolt = refVolt;
+    _ratio = volDivideRatio(r1, r2);
+}
+    
+float adjVoltDivide::read(AnalogIn apin) {
+    return apin.read() / _ratio;    
+}
+
+uint16_t adjVoltDivide::read_u16(AnalogIn apin) {
+    return (int) ((float) apin.read_u16() / _ratio);
+}
+
+*/
\ No newline at end of file