From a735848834b5a5d50974060d8a0b94f7d50d846b Mon Sep 17 00:00:00 2001
From: Christian Lind Vie Madsen <cm@oz1cm.dk>
Date: Tue, 14 Oct 2025 11:24:31 +0200
Subject: [PATCH] not done yet because calculation is wrong..

---
 cm_heatsink_emulator.c | 33 ++++++++++++++++++++++++++-------
 cm_heatsink_emulator.h | 10 +++++++---
 2 files changed, 33 insertions(+), 10 deletions(-)

diff --git a/cm_heatsink_emulator.c b/cm_heatsink_emulator.c
index 24c3835..3adaf26 100644
--- a/cm_heatsink_emulator.c
+++ b/cm_heatsink_emulator.c
@@ -11,21 +11,40 @@
 
 static float deltaTempElement(cm_heatsink_thermalElement_t *element, float temperature, float power){
 
-	return temperature + (power * element->thermal_resistance);
+	return temperature + (power * element->R_th);
 
 }
 
-float cm_heatsinkEmul_getRespon(cm_heatsinkEmul_t *inst, float dt){
+float cm_heatsinkEmul_getRespon(cm_heatsinkEmul_t *inst, float dtime){
 
-	float t = 0.0;
-
-	for(int i = inst->thermalElements_len; i > 0; i--){
+	float dtemp = inst->ambientTemp;
 
+	for(int i = inst->thermalElements_Counts; i > 0; i--){
 
+		dtemp+= deltaTempElement(&inst->thermalElements[i], dtemp, inst->power);
 	}
 
-	inst->heatsinkTemperature = inst->heatsinkTemperature + (1.0 / inst->thermal_capacity) * (pj5_ThermEmul_Heatsink_RespVal(inst) - inst->heatsinkTemperature) * dt;
+	printf("dTemp: %f", dtemp);
 
-		return v_prev;
+	//inst->heatsinkTemperature = inst->heatsinkTemperature + (1.0 / inst->C_th) * (pj5_ThermEmul_Heatsink_RespVal(inst) - inst->heatsinkTemperature) * dt;
+
+		return inst->heatsinkTemperature;
+
+}
+
+
+int cm_heatsinkEmul_init(cm_heatsinkEmul_t *inst, cm_heatsink_thermalElement_t *elements, int elements_Count, float power, float ambientTemp){
+
+	if(inst == NULL)return 0;
+	if(elements == NULL)return 0;
+	if(elements_Count == 0)return 0;
+
+	inst->thermalElements = elements;
+	inst->thermalElements_Counts = elements_Count;
+
+	inst->power = power;
+	inst->ambientTemp = ambientTemp;
+
+	return 0;
 
 }
diff --git a/cm_heatsink_emulator.h b/cm_heatsink_emulator.h
index a65051d..3c4704b 100644
--- a/cm_heatsink_emulator.h
+++ b/cm_heatsink_emulator.h
@@ -7,27 +7,31 @@
 
 #ifndef CM_HEATSINK_EMULATOR_H_
 #define CM_HEATSINK_EMULATOR_H_
+#include <stdio.h>
+#include <stdint.h>
 
 typedef struct {
 	char label[32];
-	float thermal_resistance; // In Kelvin/Watt or Celsius/Watt (you can mix!)
+	float R_th; // In Kelvin/Watt or Celsius/Watt (you can mix!)
 
 }cm_heatsink_thermalElement_t;
 
 typedef struct {
 
 	cm_heatsink_thermalElement_t *thermalElements;
-	int thermalElements_len;
+	int thermalElements_Counts;
 
 	float power;
 	float ambientTemp;
-	float thermal_capacity;
+	float C_th; // Thermal capacity
 
 	// Dynamic
 	float heatsinkTemperature;
 
 }cm_heatsinkEmul_t;
 
+float cm_heatsinkEmul_getRespon(cm_heatsinkEmul_t *inst, float dt);
+int cm_heatsinkEmul_init(cm_heatsinkEmul_t *inst, cm_heatsink_thermalElement_t *elements, int elements_Count, float power, float ambientTemp);
 
 
 #endif /* CM_HEATSINK_EMULATOR_H_ */