diff --git a/MyDrivers/GPIO.c b/MyDrivers/GPIO.c
index 93bf04a..820a14f 100644
--- a/MyDrivers/GPIO.c
+++ b/MyDrivers/GPIO.c
@@ -1,2 +1,18 @@
 #include "GPIO.h"
+#include "stm32f1xx_ll_gpio.h"
 
+void GPIO_conf(GPIO_TypeDef * GPIOx, uint32_t PINx, uint32_t mode, uint32_t outputType, uint32_t pullMode){
+	
+	LL_GPIO_InitTypeDef init;
+	
+	//Activation de l'horloge
+	if (GPIOx == GPIOA) LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOA);
+	else if (GPIOx == GPIOB) LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOB);
+	else if (GPIOx == GPIOC) LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOC);
+	else if (GPIOx == GPIOD) LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOD);
+	
+	//Configuration de la PIN
+	LL_GPIO_StructInit(&init);
+	init.Pin = PINx;
+	
+}
\ No newline at end of file
diff --git a/MyDrivers/GPIO.h b/MyDrivers/GPIO.h
index 8e3c489..9a0178e 100644
--- a/MyDrivers/GPIO.h
+++ b/MyDrivers/GPIO.h
@@ -1,4 +1,14 @@
 #ifndef GPIO_H
 #define GPIO_H
 
+#include "stm32f103xb.h"
+#include "stm32f1xx_ll_gpio.h"
+#include "stm32f1xx_ll_bus.h"
+
+void GPIO_conf(GPIO_TypeDef * GPIOx, uint32_t PINx, uint32_t mode, uint32_t outputType, uint32_t pullMode);
+
+void GPIO_setPin(GPIO_TypeDef GPIOx, uint32_t PINx, int output);
+
+void GPIO_readPin(GPIO_TypeDef GPIOx, uint32_t PINx);
+
 #endif