50ee4244d3
display.cpp:
Optimize battery voltage measurement
While calibrating noticed it is very non-linear
- outsource function to scale using lookup table
- add lookup table to batvoltage measurement
inserted many values to lookup table while testing
currentsensors:
Fix current value jumping around between 0 and 0.2 on display
while standstill
- add parameter snapToZeroThreshold
23 lines
609 B
C++
23 lines
609 B
C++
#include <driver/adc.h>
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//supported current sensor working method:
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//0V = -ratedCurrent
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//centerVoltage = 0A
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//3.3V = ratedCurrent
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class currentSensor{
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public:
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currentSensor (adc1_channel_t adcChannel_f, float ratedCurrent, float snapToZeroThreshold, bool inverted = false);
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void calibrateZeroAmpere(void); //set current voltage to voltage representing 0A
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float read(void); //get current ampere
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private:
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adc1_channel_t adcChannel;
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float ratedCurrent;
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bool isInverted;
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float snapToZeroThreshold;
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uint32_t measure;
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float voltage;
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float current;
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float centerVoltage = 3.3/2;
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};
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