Made a bool for error and high temp

This commit is contained in:
Inamr 2024-03-13 13:07:29 +01:00
parent 8e58925dd1
commit 24190f1f15
3 changed files with 257 additions and 246 deletions

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@ -1,180 +1,180 @@
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@ -1,38 +1,40 @@
/*
* File: themistor-temp.h
* Author: athamantis
*
* Created on 08 March 2024, 11:46
*/
#ifndef THEMISTOR_TEMP_H
#define THEMISTOR_TEMP_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
#define R_t0 10000
#define T_0 298.15
#define B 3950
#define R_1 1000
// Takes inn messured value
// Calculates the temperature in celcius
// Returns the thermistor themperature
float calculate_thermistor_temp(float readValue);
#ifdef __cplusplus
}
#endif
#endif /* THEMISTOR_TEMP_H */
/*
* File: themistor-temp.h
* Author: athamantis
*
* Created on 08 March 2024, 11:46
*/
#ifndef THEMISTOR_TEMP_H
#define THEMISTOR_TEMP_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdbool.h>
#include <float.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
#define R_t0 10000
#define T_0 298.15
#define B 3950
#define R_1 1000
// Takes inn messured value
// Calculates the temperature in celcius
// Returns the thermistor themperature
float calculate_thermistor_temp(float readValue);
bool error_message(float thermistor_temp);
#ifdef __cplusplus
}
#endif
#endif /* THEMISTOR_TEMP_H */

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@ -1,28 +1,37 @@
#include "themistor-temp.h"
float calculate_thermistor_temp(float readValue){
float R_therm;
float V_1;
float ln;
float T_therm;
float V_therm;
uint8_t V_tot = 5;
// Calculate Voltage over thermistor
V_therm = (V_tot/1024)*readValue;
// Voltage accross R_1
V_1 = V_tot - V_therm;
// Calculate Thermistor resistanse
R_therm = (V_therm)/ (V_1 / R_1);
// Steinhart-Harts formula
ln = log(R_therm/R_t0);
T_therm = (1/ ((ln/B) + (1/T_0)));
// Temperatur in celcius
T_therm -= 273.15;
return T_therm;
}
#include "themistor-temp.h"
float calculate_thermistor_temp(float readValue){
float R_therm;
float V_1;
float ln;
float T_therm;
float V_therm;
uint8_t V_tot = 5;
// Calculate Voltage over thermistor
V_therm = (V_tot/1024)*readValue;
// Voltage accross R_1
V_1 = V_tot - V_therm;
// Calculate Thermistor resistanse
R_therm = (V_therm)/ (V_1 / R_1);
// Steinhart-Harts formula
ln = log(R_therm/R_t0);
T_therm = (1/ ((ln/B) + (1/T_0)));
// Temperatur in celcius
T_therm -= 273.15;
return T_therm;
}
bool error_message(float thermistor_temp){
int high_temp = 0;
if (thermistor_temp > high_temp){
return true;
}
else {
return false;
}
}