Resistive divider used for measuring temperature. More...

#include "murata_ncxxxxh103.h"
#include "fassert.h"
#include "foxmath.h"
#include "temperature_sensor_defs.h"
#include <math.h>
#include <stdbool.h>
#include <stdint.h>

Include dependency graph for murata_ncxxxxh103.c:

Go to the source code of this file.

Macros

#define	TS_MURATA_NCXXXXH103_ADC_VOLTAGE_V_MAX_V ((float_t)((TS_MURATA_NCXXXXH103_RESISTOR_DIVIDER_SUPPLY_VOLTAGE_V * ts_ncxxxxh103Lut[ts_ncxxxxh103LutSize-1u].resistance_Ohm) / (ts_ncxxxxh103Lut[ts_ncxxxxh103LutSize-1u].resistance_Ohm+TS_MURATA_NCXXXXH103_RESISTOR_DIVIDER_RESISTANCE_R_1_R_2_Ohm)))

#define	TS_MURATA_NCXXXXH103_ADC_VOLTAGE_V_MIN_V ((float_t)((TS_MURATA_NCXXXXH103_RESISTOR_DIVIDER_SUPPLY_VOLTAGE_V * ts_ncxxxxh103Lut[0u].resistance_Ohm) / (ts_ncxxxxh103Lut[0u].resistance_Ohm+TS_MURATA_NCXXXXH103_RESISTOR_DIVIDER_RESISTANCE_R_1_R_2_Ohm)))

Functions
int16_t	TS_Mur00GetTemperatureFromLut (uint16_t adcVoltage_mV)
	returns temperature based on measured ADC voltage. More...

int16_t	TS_Mur00GetTemperatureFromPolynomial (uint16_t adcVoltage_mV)
	returns temperature based on measured ADC voltage More...

Variables
static const TS_TEMPERATURE_SENSOR_LUT_s	ts_ncxxxxh103Lut []

static const uint16_t	ts_ncxxxxh103LutSize = sizeof(ts_ncxxxxh103Lut) / sizeof(TS_TEMPERATURE_SENSOR_LUT_s)

Detailed Description

Resistive divider used for measuring temperature.

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SPDX-License-Identifier: BSD-3-Clause

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Author: foxBMS Team

Date: 2022-10-12 (date of creation)

Updated: 2023-10-12 (date of last update)

Version: v1.6.0

Prefix: TS

Definition in file murata_ncxxxxh103.c.

Macro Definition Documentation

◆ TS_MURATA_NCXXXXH103_ADC_VOLTAGE_V_MAX_V

#define TS_MURATA_NCXXXXH103_ADC_VOLTAGE_V_MAX_V ((float_t)((TS_MURATA_NCXXXXH103_RESISTOR_DIVIDER_SUPPLY_VOLTAGE_V * ts_ncxxxxh103Lut[ts_ncxxxxh103LutSize-1u].resistance_Ohm) / (ts_ncxxxxh103Lut[ts_ncxxxxh103LutSize-1u].resistance_Ohm+TS_MURATA_NCXXXXH103_RESISTOR_DIVIDER_RESISTANCE_R_1_R_2_Ohm)))

Defines for calculating the ADC voltage on the ends of the operating range. The ADC voltage is calculated with the following formula:

V_adc = ( ( V_supply * R_ntc ) / ( R + R_ntc ) )

Depending on the position of the NTC in the voltage resistor (R_1/R_2), different R_ntc values are used for the calculation.

Definition at line 97 of file murata_ncxxxxh103.c.

◆ TS_MURATA_NCXXXXH103_ADC_VOLTAGE_V_MIN_V

#define TS_MURATA_NCXXXXH103_ADC_VOLTAGE_V_MIN_V ((float_t)((TS_MURATA_NCXXXXH103_RESISTOR_DIVIDER_SUPPLY_VOLTAGE_V * ts_ncxxxxh103Lut[0u].resistance_Ohm) / (ts_ncxxxxh103Lut[0u].resistance_Ohm+TS_MURATA_NCXXXXH103_RESISTOR_DIVIDER_RESISTANCE_R_1_R_2_Ohm)))

Defines for calculating the ADC voltage on the ends of the operating range. The ADC voltage is calculated with the following formula:

V_adc = ( ( V_supply * R_ntc ) / ( R + R_ntc ) )

Depending on the position of the NTC in the voltage resistor (R_1/R_2), different R_ntc values are used for the calculation.

Definition at line 99 of file murata_ncxxxxh103.c.

Function Documentation

◆ TS_Mur00GetTemperatureFromLut()

int16_t TS_Mur00GetTemperatureFromLut ( uint16_t adcVoltage_mV )

returns temperature based on measured ADC voltage.

Parameters

adcVoltage_mV voltage in mV

Returns: corresponding temperature in deci °C or INT16_MAX/INT16_MIN if NTC is shorted or got disconnected. The caller of this functions needs to check for these return values to prevent invalid data.

Definition at line 115 of file murata_ncxxxxh103.c.

Here is the call graph for this function:

◆ TS_Mur00GetTemperatureFromPolynomial()

int16_t TS_Mur00GetTemperatureFromPolynomial ( uint16_t adcVoltage_mV )

returns temperature based on measured ADC voltage

Parameters

adcVoltage_mV voltage in mV

Returns: corresponding temperature in deci °C

Definition at line 166 of file murata_ncxxxxh103.c.

Variable Documentation

◆ ts_ncxxxxh103Lut

const TS_TEMPERATURE_SENSOR_LUT_s ts_ncxxxxh103Lut[]

static

Initial value:

= {
    {-400, 195652.0f}, {-350, 148171.0f}, {-300, 113347.0f}, {-250, 87559.0f}, {-200, 68237.0f}, {-150, 53650.0f},
    {-100, 42506.0f},  {-50, 33892.0f},   {0, 27219.0f},     {50, 22021.0f},   {100, 17926.0f},  {150, 14674.0f},
    {200, 12081.0f},   {250, 10000.0f},   {300, 8315.0f},    {350, 6948.0f},   {400, 5834.0f},   {450, 4917.0f},
    {500, 4161.0f},    {550, 3535.0f},    {600, 3014.0f},    {650, 2586.0f},   {700, 2228.0f},   {750, 1925.0f},
    {800, 1669.0f},    {850, 1452.0f},    {900, 1268.0f},    {950, 1110.0f},   {1000, 974.0f},   {1050, 858.0f},
    {1100, 758.0f},    {1150, 672.0f},    {1200, 596.0f},    {1250, 531.0f},   {1300, 474.0f},   {1350, 424.0f},
    {1400, 381.0f},    {1450, 342.0f},    {1500, 309.0f},
}

LUT filled from higher resistance to lower resistance - datasheet: RO3E - Aug. 3, 2018

Definition at line 71 of file murata_ncxxxxh103.c.

◆ ts_ncxxxxh103LutSize

const uint16_t ts_ncxxxxh103LutSize = sizeof(ts_ncxxxxh103Lut) / sizeof(TS_TEMPERATURE_SENSOR_LUT_s)

static

size of the ts_ntcle317e4103sbaLut LUT

Definition at line 82 of file murata_ncxxxxh103.c.

Macros

Functions

Variables