diff --git a/source/Core/Drivers/Utils.cpp b/source/Core/Drivers/Utils.cpp new file mode 100644 index 00000000..4899750f --- /dev/null +++ b/source/Core/Drivers/Utils.cpp @@ -0,0 +1,33 @@ +/* + * Utils.cpp + * + * Created on: 28 Apr 2021 + * Author: Ralim + */ + +#include + +int32_t Utils::InterpolateLookupTable(const uint16_t *lookupTable, + const uint16_t value) { + if (value) { + int noItems = sizeof(lookupTable) / (2 * sizeof(uint16_t)); + for (int i = 1; i < (noItems - 1); i++) { + // If current tip temp is less than current lookup, then this current lookup is the higher point to interpolate + if (value < lookupTable[i * 2]) { + return LinearInterpolate(lookupTable[(i - 1) * 2], + lookupTable[((i - 1) * 2) + 1], lookupTable[i * 2], + lookupTable[(i * 2) + 1], value); + } + } + return LinearInterpolate(lookupTable[(noItems - 2) * 2], + lookupTable[((noItems - 2) * 2) + 1], + lookupTable[(noItems - 1) * 2], + lookupTable[((noItems - 1) * 2) + 1], value); + } + return 0; +} + +int32_t Utils::LinearInterpolate(int32_t x1, int32_t y1, int32_t x2, int32_t y2, + int32_t x) { + return y1 + (((((x - x1) * 1000) / (x2 - x1)) * (y2 - y1))) / 1000; +} diff --git a/source/Core/Drivers/Utils.h b/source/Core/Drivers/Utils.h new file mode 100644 index 00000000..1031f080 --- /dev/null +++ b/source/Core/Drivers/Utils.h @@ -0,0 +1,20 @@ +/* + * Utils.h + * + * Created on: 28 Apr 2021 + * Author: Ralim + */ + +#ifndef CORE_DRIVERS_UTILS_H_ +#define CORE_DRIVERS_UTILS_H_ +#include +class Utils { +public: + static int32_t InterpolateLookupTable(const uint16_t *lookupTable, + const uint16_t value); + static int32_t LinearInterpolate(int32_t x1, int32_t y1, int32_t x2, + int32_t y2, int32_t x) ; + +}; + +#endif /* CORE_DRIVERS_UTILS_H_ */