Initial version for testing

2021-03-26 19:42:58 +01:00
commit 5f04d6e65e
41 changed files with 15774 additions and 0 deletions
--- a/src/calc.cpp
+++ b/src/calc.cpp
@ -0,0 +1,99 @@
+/*
+MIT License
+
+Copyright (c) 2021 Magnus
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+#include "calc.h"
+#include "helper.h"
+#include "config.h"
+#include "tinyexpr.h"
+#include "tempsensor.h"
+
+//#define LOG_LEVEL 5
+
+//
+// Calculates gravity according to supplied formula, compatible with iSpindle/Fermentrack formula  
+//
+double calculateGravity( double angle, double temp ) {
+    const char* formula = myConfig.getGravityFormula();
+#if LOG_LEVEL==6
+    Log.verbose(F("CALC: Calculating gravity for angle %F, temp %F." CR), angle, temp);
+    Log.verbose(F("CALC: Formula %s." CR), formula);
+#endif
+
+    if( strlen(formula) == 0 ) 
+        return 0.0;
+
+    // Store variable names and pointers.
+    te_variable vars[] = {{"tilt", &angle}, {"temp", &temp}};
+
+    int err;
+    // Compile the expression with variables.
+    te_expr *expr = te_compile(formula, vars, 2, &err);
+
+    if (expr) {
+        double g = te_eval(expr); 
+        te_free(expr);
+
+#if LOG_LEVEL==6
+        Log.verbose(F("CALC: Calculated gravity is %F." CR), g);
+#endif
+        return g;
+    } 
+
+    Log.error(F("CALC: Failed to parse expression %d." CR), err);
+    return 0;
+}
+
+//
+// Do a standard gravity temperature correction. This is a simple way to adjust for differnt worth temperatures
+//
+double gravityTemperatureCorrection( double gravity, double temp, double calTemp) {
+#if LOG_LEVEL==6
+    Log.verbose(F("CALC: Adjusting gravity based on temperature, gravity %F, temp %F, calTemp %F." CR), gravity, temp, calTemp);
+#endif
+
+    double tempF = convertCtoF( temp );
+    double calTempF = convertCtoF(calTemp); 
+    const char* formula = "gravity*((1.00130346-0.000134722124*temp+0.00000204052596*temp^2-0.00000000232820948*temp^3)/(1.00130346-0.000134722124*cal+0.00000204052596*cal^2-0.00000000232820948*cal^3))";
+
+    // Store variable names and pointers.
+    te_variable vars[] = {{"gravity", &gravity}, {"temp", &tempF}, {"cal", &calTempF}};
+
+    int err;
+    // Compile the expression with variables.
+    te_expr *expr = te_compile(formula, vars, 3, &err);
+
+    if (expr) {
+        double g = te_eval(expr); 
+        te_free(expr);
+
+#if LOG_LEVEL==6
+        Log.verbose(F("CALC: Corrected gravity is %F." CR), g);
+#endif
+        return g;
+    } 
+
+    Log.error(F("CALC: Failed to parse expression %d, no correction has been made." CR), err);
+    return gravity;
+}
+
+// EOF