Diff: BOX.cpp

Revision:

0:01deb85101c9

Child:

2:f8120bb54b69

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BOX.cpp	Mon May 13 13:55:19 2019 +0000
@@ -0,0 +1,53 @@
+#include "BOX.h"
+
+BOX::BOX (PinName pinCLK_HX711, PinName pinDAT_HX711, PinName pin_temp, PinName pin_cond, int HX711_coefficent):therm(pin_temp, DS18B20::RES_12_BIT),balance(pinDAT_HX711, pinCLK_HX711)
+{
+  _pinCLK = pinCLK_HX711;
+  _pinDAT = pinDAT_HX711;
+  _pintemp = pin_temp;
+  _pincond = pin_cond;
+  _coefficent = HX711_coefficent;
+  
+  
+}
+
+//BOX::~BOX(){}
+
+float BOX::get_temp()
+{
+  float temperature;
+  _tmp = 0;
+  for (int i = 0; i < 20; i++)
+  {
+    _tmp = therm.GetTemperature();
+    temperature = temperature + _tmp;
+  }
+  return temperature / 20;
+}
+
+int BOX::get_resistance()
+{
+  AnalogIn cond_value(_pincond);                // reads voltage on the conductimeter pin.
+  float meas_v;
+  float current;
+  float resistance;
+  _tmp = 0;
+  for(int i = 0; i < 20; i++)
+  {
+    meas_v = cond_value.read(); // Read the analog input value (value from 0.0 to 1.0 = full ADC conversion range)
+    current = (1 - meas_v) / (2000000); // kvl and V/R to get current
+    _tmp = (meas_v / current);    // Ohm law gives us the soil resistence
+    resistance = resistance + _tmp;
+  }
+  return (int) (resistance / 20);
+}
+
+void BOX::tare(unsigned char times)
+{
+  balance.setTare(balance.averageValue(times));
+}
+
+int BOX::get_weight()
+{
+  return (int) (balance.getGram() / _coefficent);
+}