arke-private-conversion.h
022ad1af77d8master

arke-private-conversion.h
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			#pragma once

			#include <math.h>

			#include <inttypes.h>

			#define MAX_HIH6030_VALUE 16382

			#ifdef __cplusplus
			extern "C" {
			#endif



			inline uint16_t float_to_humidity(float value) {
			if (value <= 0.0 ) {
			return 0;
			} else if (value >= 100.0 ) {
			return MAX_HIH6030_VALUE;
			} else {
			return value / 100.0 * (float)MAX_HIH6030_VALUE;
			}
			}

			inline float humidity_to_float(uint16_t value) {
			if (value > MAX_HIH6030_VALUE ) {
			return NAN;
			}
			return (float)value / ((float)MAX_HIH6030_VALUE) * 100.0;
			}

			inline uint16_t float_to_hih6030_temperature(float value) {
			if ( value <= -40.0 ) {
			return 0;
			} else if ( value >= 125.0 ) {
			return MAX_HIH6030_VALUE;
			} else {
			return (value + 40.0) / 165.0 * MAX_HIH6030_VALUE;
			}
			}

			inline float hih6030_temperature_to_float(uint16_t value) {
			if (value > MAX_HIH6030_VALUE ) {
			return NAN;
			}
			return (float)value / ((float)MAX_HIH6030_VALUE) * 165.0 - 40.0;
			}

			inline float tmp1075_to_float(uint16_t value) {
			// conversion from 12-bit ninary complement to 16-bit binary complement
			int16_t sValue = value;
			if ( (value & 0x0800) != 0 ) {
			sValue \|= 0xf000;
			}
			return sValue * 0.0625;
			}

			#ifdef __cplusplus
			}
			#endif