Diff: LoadCell.cpp

Revision:

16:691649d8a3da

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LoadCell.cpp	Wed Sep 05 07:50:27 2018 +0000
@@ -0,0 +1,87 @@
+#include "LoadCell.h"
+
+LoadCell::LoadCell(PinName pin): ain(pin)
+{
+    SAMPLE_AMOUNT = 2000;
+    CALIBRATION_MASS = 843.56; // 274.19
+    TARE_VALUE = 0.743027;
+    CALIBRATION_VALUE = 0.725960;
+    OFFSET = TARE_VALUE-CALIBRATION_VALUE;
+    DOWN_OFFSET = 0.023591;
+};
+
+
+float LoadCell::analogRead()
+{
+    float samples [SAMPLE_AMOUNT];
+    for(int i = 0; i < SAMPLE_AMOUNT; i++) {
+        float read =ain.read();
+        samples [i] =read;
+    }
+    return Maths::mean(samples,0,SAMPLE_AMOUNT);
+}
+
+float LoadCell::simpleAnalogRead()
+{
+    return ain.read();
+}
+
+float LoadCell::calculateMass(float value)
+{
+    return ((TARE_VALUE - value)*(CALIBRATION_MASS))/(OFFSET);
+}
+
+
+float LoadCell::tare()
+{
+    TARE_VALUE = 0;
+    float values[20];
+    for (int a = 0; a<20; a++) {
+        values[a] = analogRead();
+    }
+
+    TARE_VALUE = Maths::mean(values,0,20);
+    return TARE_VALUE;
+}
+
+float LoadCell::tareDown()
+{
+    TARE_VALUE = 0;
+    float values[20];
+    for (int a = 0; a<20; a++) {
+        values[a] = analogRead();
+    }
+
+    TARE_VALUE = Maths::mean(values,0,20)- DOWN_OFFSET;
+    return TARE_VALUE;
+}
+
+float LoadCell::callibrate()
+{
+    CALIBRATION_VALUE = analogRead();
+    return CALIBRATION_VALUE;
+}
+
+
+float LoadCell::mass()
+{
+    return calculateMass(analogRead());
+}
+
+float LoadCell::simpleMass()
+{
+    return calculateMass(simpleAnalogRead());
+}
+
+
+void LoadCell::setCalibrationMass(int mass)
+{
+    CALIBRATION_MASS = mass;
+}
+
+void LoadCell::setSampleAmount(int samples)
+{
+    SAMPLE_AMOUNT = samples;
+}
+
+