41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
#include "HX711.h"
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#include "SwimTrackerConfig.h"
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#include <cstdint>
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class Scale
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{
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public:
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bool measure(uint16_t &measurementOut)
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{
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long value = hx711_.read_average(CONFIG_MEASUREMENT_AVG_COUNT);
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LOG_TRACE("rv %ld\n", value);
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value -= offset_;
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if (value < 0)
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measurementOut = (int16_t)(-(value >> valueRightShift_ ));
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else
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measurementOut = 0;
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return true;
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}
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void begin(uint32_t pinDOUT, uint32_t pinSCK, int valueRightShift)
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{
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hx711_.begin(pinDOUT, pinSCK);
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valueRightShift_ = valueRightShift;
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};
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void tare(uint32_t numMeasurementsToAverage = 50)
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{
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auto v1 = hx711_.read_average(3);
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offset_ = hx711_.read_average(numMeasurementsToAverage);
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LOG_INFO("Init reading %ld, Tare offset %ld\n", v1, offset_);
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}
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const long &offset() const { return offset_; }
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int valueRightShift() const { return valueRightShift_; }
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private:
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HX711 hx711_;
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long offset_ = 0;
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int valueRightShift_;
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};
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