From 6c0d2d1123b5cacab46385e4042ecd681b090d48 Mon Sep 17 00:00:00 2001
From: orvik <orvik@noreply.etud.insa-toulouse.fr>
Date: Tue, 4 Nov 2025 09:33:04 +0100
Subject: [PATCH] Add enable logic

---
 GPIO.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 GPIO.c

diff --git a/GPIO.c b/GPIO.c
new file mode 100644
index 0000000..89de2cb
--- /dev/null
+++ b/GPIO.c
@@ -0,0 +1,96 @@
+#include "stm32f10x.h"
+#include <stdlib.h>
+
+int ChercherEtat(GPIO_TypeDef * GPIO, int pin){
+return((GPIO -> IDR & (0x01 << pin)));
+}
+
+void ResetBroche(uint32_t GPIO, int Broche){
+  GPIO -> BSRR |= BSBroche;
+}
+
+void SetBroche(uint32_t GPIO, int Broche){
+  GPIO -> BSRR |= BSBroche << 16;
+}
+
+void ConfigureGPIO(uint32_t GPIO, int Broche, int IO, char Mode){
+	//Start clock
+if(GPIO == GPIOA){
+	RCC -> APB2ENR |= RCC_APB2ENR_IOPAEN;
+}
+else if(GPIO == GPIOB){
+	RCC -> APB2ENR |= RCC_APB2ENR_IOPBEN;
+}
+else if(GPIO == GPIOC){
+	RCC -> APB2ENR |= RCC_APB2ENR_IOPCEN;
+}
+else if(GPIO == GPIOD){
+	RCC -> APB2ENR |= RCC_APB2ENR_IOPDEN;
+}
+
+  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
+    if (strcmp(Mode,"Floating")) {
+      GPIO -> CRL |= (0x1 << Broche *4) | (0x1 << Broche * 4 + 1);	
+    }
+    else if (strcmp(Mode,"Pull-Up") || strcmp(Mode,"Pull-Down")){
+      GPIO -> CRL |=  (0x1 << 6*4 + 1);	
+    }
+    else {
+    }
+  }
+  else if ( IO  < 5) { // Output
+    GPIO -> CRL |= (0xIO << Broche * 4 + 2); // Frequency mode
+    if (strcmp(Mode, "Open-Drain")){
+      GPIO -> CRL |= (0x1 << Broche *4);	
+    }
+    else if (strcmp(Mode, "Push-Pull Alterne")){
+      GPIO -> CRL |= (0x1 << Broche *4 + 1);
+      RCC->APB2ENR |= RCC_APB2ENR_AFIOEN; // Alternate Function I/O clock enable GPIOA
+    }
+    else if (strcmp(Mode, "Open-Drain Alterne")){
+      GPIO -> CRL |= (0x1 << Broche * 4) | (0x1 << Broche * 4 + 1);	
+    }
+    else {
+    }
+  }
+  else{
+    return;
+  }
+  }
+  else if (Broche < 16) {
+    GPIO -> CRH &= ~(0x1 << Broche *4) & ~(0x1 << Broche *4 +1) & ~(0x1 << Broche *4 + 2) & ~(0x1 << Broche *4 + 3); // Clean bits
+    if (IO == 0){ //Input
+      if (strcmp(Mode,"Floating")) {
+        GPIO -> CRH |= (0x1 << Broche *4) | (0x1 << Broche * 4 + 1);	
+      }
+      else if (strcmp(Mode,"Pull-Up") || strcmp(Mode,"Pull-Down")){
+        GPIO -> CRH |=  (0x1 << 6*4 + 1);	
+      }
+      else { 
+      } 
+    }
+    else if ( IO  < 5) { // Output
+    GPIO -> CRH |= (0xIO << Broche * 4 + 2); // Frequency mode
+      if (strcmp(Mode, "Open-Drain")){
+        GPIO -> CRH |= (0x1 << Broche *4);	
+      }
+      else if (strcmp(Mode, "Push-Pull Alterne")){
+        GPIO -> CRH |= (0x1 << Broche *4 + 1);	
+      }
+      else if (strcmp(Mode, "Open-Drain Alterne")){
+        GPIO -> CRH |= (0x1 << Broche * 4) | (0x1 << Broche * 4 + 1);	
+      }
+      else {
+      }
+    }
+    else{
+      return; // IO invalid
+    }
+  }  
+  else{
+	return; // Pin number invalid
+  }
+}
+