27 lines
889 B
C
27 lines
889 B
C
/**
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* @file adc_math.h
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*
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* todo: all this looks to be about internal ADC, merge this file with adc_inputs.h?
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* these macro are also used in simulator so maybe not really merging with adc_inputs.h until simulator get's it's own implementation?
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*
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* @date Mar 18, 2014
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* @author Andrey Belomutskiy, (c) 2012-2017
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*/
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#ifndef ADC_MATH_H_
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#define ADC_MATH_H_
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#define ADC_MAX_VALUE 4095
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#define adcToVolts(adc) ((engineConfiguration->adcVcc) / ADC_MAX_VALUE * (adc))
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#define voltsToAdc(volts) ((volts) * (ADC_MAX_VALUE / (engineConfiguration->adcVcc)))
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// voltage in MCU universe, from zero to VDD
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#define getVoltage(msg, hwChannel) (adcToVolts(getAdcValue(msg, hwChannel)))
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// Board voltage, with divider coefficient accounted for
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#define getVoltageDivided(msg, hwChannel) (getVoltage(msg, hwChannel) * engineConfiguration->analogInputDividerCoefficient)
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#endif /* ADC_MATH_H_ */
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