diff --git a/CantoOrvikPilotes/Source/ADC.c b/CantoOrvikPilotes/Source/ADC.c
index 06d7405..e69de29 100644
Binary files a/CantoOrvikPilotes/Source/ADC.c and b/CantoOrvikPilotes/Source/ADC.c differ
diff --git a/CantoOrvikPilotes/Source/GPIO.c b/CantoOrvikPilotes/Source/GPIO.c
index 89de2cb..1fe79a1 100644
--- a/CantoOrvikPilotes/Source/GPIO.c
+++ b/CantoOrvikPilotes/Source/GPIO.c
@@ -1,20 +1,21 @@
 #include "stm32f10x.h"
 #include <stdlib.h>
 
-int ChercherEtat(GPIO_TypeDef * GPIO, int pin){
+int ChercherEtat(GPIO_TypeDef * GPIO, int pin){ // Trouvons la valeur d'un broche sur un certain GPIO
 return((GPIO -> IDR & (0x01 << pin)));
 }
 
-void ResetBroche(uint32_t GPIO, int Broche){
+void ResetBroche(uint32_t GPIO, int Broche){ // Mettre à zero d'un certain broche d'un certain GPIO
   GPIO -> BSRR |= BSBroche;
 }
 
-void SetBroche(uint32_t GPIO, int Broche){
+void SetBroche(uint32_t GPIO, int Broche){ // Mettre à zero d'un certain broche d'un certain GPIO
   GPIO -> BSRR |= BSBroche << 16;
 }
 
-void ConfigureGPIO(uint32_t GPIO, int Broche, int IO, char Mode){
-	//Start clock
+void ConfigureGPIO(uint32_t GPIO, int Broche, int IO, char Mode){ // Mettre un broche d'un GPIO sur un mode
+                                                                  // Possble de améliorer avec des int à la place de string
+	//Start clock pour les GPIO concernés
 if(GPIO == GPIOA){
 	RCC -> APB2ENR |= RCC_APB2ENR_IOPAEN;
 }
@@ -27,7 +28,7 @@ else if(GPIO == GPIOC){
 else if(GPIO == GPIOD){
 	RCC -> APB2ENR |= RCC_APB2ENR_IOPDEN;
 }
-
+ // Cas d'u CRL, broche 0 à 7
   if (Broche < 8) {
   GPIO -> CRL &= ~(0x1 << Broche *4) & ~(0x1 << Broche *4 +1) & ~(0x1 << Broche *4 + 2) & ~(0x1 << Broche *4 + 3); // Clean bits 
   if (IO == 0){ //Input
@@ -38,6 +39,7 @@ else if(GPIO == GPIOD){
       GPIO -> CRL |=  (0x1 << 6*4 + 1);	
     }
     else {
+      return; // Mode invalid
     }
   }
   else if ( IO  < 5) { // Output
@@ -53,6 +55,7 @@ else if(GPIO == GPIOD){
       GPIO -> CRL |= (0x1 << Broche * 4) | (0x1 << Broche * 4 + 1);	
     }
     else {
+      return; // Mode invalid
     }
   }
   else{
@@ -68,7 +71,8 @@ else if(GPIO == GPIOD){
       else if (strcmp(Mode,"Pull-Up") || strcmp(Mode,"Pull-Down")){
         GPIO -> CRH |=  (0x1 << 6*4 + 1);	
       }
-      else { 
+      else {
+        return; // Mode invalid or doesn't exist
       } 
     }
     else if ( IO  < 5) { // Output
@@ -83,6 +87,7 @@ else if(GPIO == GPIOD){
         GPIO -> CRH |= (0x1 << Broche * 4) | (0x1 << Broche * 4 + 1);	
       }
       else {
+        return; // Mode invalid or doesn't exits
       }
     }
     else{
diff --git a/CantoOrvikPilotes/Source/MyTimer.c b/CantoOrvikPilotes/Source/MyTimer.c
index 17b0536..c333761 100644
--- a/CantoOrvikPilotes/Source/MyTimer.c
+++ b/CantoOrvikPilotes/Source/MyTimer.c
@@ -3,6 +3,7 @@
 #include "Timer.h"
 #include "PWM.h"
 #include "GPIO.h"
+// Variables
 #define ARR_TIM1 0xFFAD
 #define PSC_TIM1 0xFF
 #define ARR_TIM2 0xFFAD
@@ -11,7 +12,6 @@
 #define PSC_TIM3 0x0
 
 volatile int g_tick_count;
-
 void Test(void){
     // Signal
     g_tick_count++;
@@ -20,10 +20,10 @@ void Test(void){
 
 
 void ConfigureBroches(){
-	ConfigureGPIO(GPIOA, 6, 4, Push-Pull);
-	//GPIOA->CRL &= ~(0xF << 6*4); // clean pin 6
-	//GPIOA->CRL |= (0xB << 6*4); // Alternate Function output, Push-Pull max 50 Hz
-	
+	ConfigureGPIO(GPIOA, 6, 4, Push-Pull); // Cela équivaut à :
+                                           // GPIOA->CRL &= ~(0xF << 6*4); // clean pin 6
+                                           // GPIOA->CRL |= (0xB << 6*4); // Alternate Function output, Push-Pull max 50 Hz
+    // Exemples d'_tilisation
 	//Mettre Broche 5 sur input Pull-up/down
     ConfigureGPIO(GPIOC, 3, 0, Pull-Up);
     //GPIOC ->CRL &= ~(0xF << (4 *3)); 
@@ -51,9 +51,7 @@ void ConfigureIT(){
 //MyTimer_ActiveIT(TIM2, 4, Test); //start interruption with priority 4
 //MyTimer_ActiveIT(TIM1, 4, Test); //start interruption with priority 4
 MyTimer_ActiveIT(TIM3, 4, Test); //start interruption with priority 4
-
 }
-
 void ConfigurePWM(){
 MyTimer_PWM(TIM1, 1);
 MyTimer_Set_DutyCycle(TIM1, 1, 20.0);	
diff --git a/CantoOrvikPilotes/Source/Nucleo.c b/CantoOrvikPilotes/Source/Nucleo.c
index 786830d..2e42339 100644
--- a/CantoOrvikPilotes/Source/Nucleo.c
+++ b/CantoOrvikPilotes/Source/Nucleo.c
@@ -1,10 +1,10 @@
 #include "stm32f10x.h"
 
-void ConfigHorloge(void) {
+void ConfigHorloge(void) { // Peut-être redondant ??
 RCC->APB2ENR |= (0x01 << 2) | (0x01 << 3) | (0x01 << 4) | RCC_APB2ENR_IOPCEN | RCC_APB2ENR_TIM1EN;
 };
 
-void ConfigBroche(void){
+void ConfigBroche(void){ // 
 	//Mettre Broche 5 GPIOA à output push-pull
 	GPIOA ->CRL &= ~(0x1 << (5*4 + 2)); //0x44144444;
 	GPIOA ->CRL |= (0x1 << 5*4); //0x44144444;
@@ -17,16 +17,15 @@ void ConfigBroche(void){
 	GPIOA ->CRH |= (0x1 ); 
 };
 
-int BoutonAppuye(void){
+int BoutonAppuye(void){ // Peut être modifié avec ChercherEtat
 	return((GPIOA -> IDR & (0x01 << 9)));
-	//return(ChercherEtat(GPIOA, 9));
 }
 void AllumerLED(void){
-	GPIOA -> ODR &= ~(0x1 << 8);
+	GPIOA -> ODR &= ~(0x1 << 8); // Peut être modifié avec SetBroche
 }
 void EteindreLED(void){
-	GPIOA -> ODR |=  (0x1 << 8);
+	GPIOA -> ODR |=  (0x1 << 8); // Peut être modifié avec ResetBroche
 }
-void TogglePin(GPIO_TypeDef*GPIO, int Broche){
+void TogglePin(GPIO_TypeDef*GPIO, int Broche){ // Redondant
 GPIO -> ODR = GPIO -> ODR ^ (0x1 << Broche);
-}
\ No newline at end of file
+}
diff --git a/CantoOrvikPilotes/Source/PWM.c b/CantoOrvikPilotes/Source/PWM.c
index 6abfb6f..b38cf8d 100644
--- a/CantoOrvikPilotes/Source/PWM.c
+++ b/CantoOrvikPilotes/Source/PWM.c
@@ -2,7 +2,7 @@
 #include "PWM.h"
 
 
-void MyTimer_PWM(TIM_TypeDef *Timer, char Channel) {
+void MyTimer_PWM(TIM_TypeDef *Timer, char Channel) { // Activer PWM sur un output
     // preload
     Timer->CR1 |= TIM_CR1_ARPE;
 
@@ -41,17 +41,15 @@ void MyTimer_PWM(TIM_TypeDef *Timer, char Channel) {
         Timer->BDTR |= TIM_BDTR_MOE;
     }
 }
-
 void MyTimer_Set_DutyCycle(TIM_TypeDef *Timer, char Channel, float DutyCycle_Percent) {
     unsigned short ccr_value;
 
     // Percentages between 0 and 100
     if (DutyCycle_Percent > 100.0) DutyCycle_Percent = 100.0;
     if (DutyCycle_Percent < 0.0) DutyCycle_Percent = 0.0;
-
     // calcule of crr
     ccr_value = (unsigned short)((DutyCycle_Percent / 100.0) * (Timer->ARR));
-
+    // Assigner le valaur pour le registre de comparison pour le channel qui est pertient
     switch (Channel) {
         case 1:
             Timer->CCR1 = ccr_value;
diff --git a/CantoOrvikPilotes/Source/Timer.c b/CantoOrvikPilotes/Source/Timer.c
index 5790335..0781478 100644
--- a/CantoOrvikPilotes/Source/Timer.c
+++ b/CantoOrvikPilotes/Source/Timer.c
@@ -6,21 +6,20 @@
 	//RCC -> APB1ENR |= RCC_APB1ENR_TIM2EN | RCC_APB1ENR_TIM3EN; // Enable TIM2
 	//RCC->APB2ENR |= RCC_APB2ENR_TIM1EN; // Enable TIM1
 
-void MyTimer_Base_Init( TIM_TypeDef * Timer , unsigned short ValARR , unsigned short ValPSC ) {
+void MyTimer_Base_Init( TIM_TypeDef * Timer , unsigned short ValARR , unsigned short ValPSC ) { // Configuration du timer
 Timer -> PSC=(ValPSC);
 Timer-> ARR = (ValARR);
-	
 Timer->EGR |= TIM_EGR_UG;
 };
 
 
-static void (*p_IT_functions[4])(void);
+static void (*p_IT_functions[4])(void); // Pour créer l'array des fonctions
 
 void MyTimer_ActiveIT(TIM_TypeDef *Timer, char Prio,void(*IT_function)(void)) {
 		//Enable interruption requisition 
     Timer->DIER |= TIM_DIER_UIE; // Update interrupt enable
 
-		//Id the interruption timer routine
+    //Id the interruption timer routine
     IRQn_Type IRQn; 
 
     int timer_index = -1; // Indice pour notre array des pointeurs
@@ -56,15 +55,14 @@ void TIM2_IRQHandler(void) {
 	  if (p_IT_functions[0] != 0) {
         p_IT_functions[0](); // Execute fonction
     }
-		// TogglePin(GPIOA, 5); // Sans utiliser l'array de pointeurs
 };
 void TIM3_IRQHandler(void) {
-    // Clean flag
-		TIM3->SR &= ~TIM_SR_UIF;
-		//Call function
-	  if (p_IT_functions[1] != 0) {
-        p_IT_functions[1](); // Execute function
-    }
+  // Clean flag
+  TIM3->SR &= ~TIM_SR_UIF;
+  //Call function
+  if (p_IT_functions[1] != 0) {
+    p_IT_functions[1](); // Execute function
+  }
 };
 void TIM4_IRQHandler(void) {
     // Clean flag
@@ -74,16 +72,12 @@ void TIM4_IRQHandler(void) {
         p_IT_functions[2](); // Execute function
     }
 };
-
 // IT PWM
 void TIM1_CC_IRQHandler(void) {
     // Clean flag
     TIM1 -> DIER &= ~TIM_DIER_CC1IE; 
-
     //Set bit
-	
 	GPIOA -> ODR |= (0x1 << 8);
-    
 };
 
 void TIM1_UP_IRQHandler(void) {
@@ -94,8 +88,6 @@ void TIM1_UP_IRQHandler(void) {
       GPIOA -> ODR &=  ~(0x1 << 8);
     
 };
-
-
 void EnableTimer(TIM_TypeDef *Timer){
 	if(Timer == TIM2){
 		RCC -> APB1ENR |= RCC_APB1ENR_TIM2EN;