External interrupt/event controller -fixes #35

eslamdyab21 · Mar 10, 2023 · 1a92c38 · 1a92c38
1 parent 5d423a2
commit 1a92c38
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diff --git a/EXTI/include/EXTI_config.h b/EXTI/include/EXTI_config.h
@@ -0,0 +1,22 @@
+/**********************************************************/
+/* Author    : Gehad Elkoumy                              */
+/* Date      : 6 DEC 2022                                 */
+/* Version   : V01                                        */
+/**********************************************************/
+#ifndef EXTI_CONFIG_H
+#define EXTI_CONFIG_H
+
+
+/*options : from LINE0 to LINE15*/
+#define		EXTI_LINE			LINE0	
+
+
+
+ /*options : RISING
+			 FALLING
+			 ON_CHANGE  */
+#define		EXTI_MODE			FALLING
+
+
+
+#endif
diff --git a/EXTI/include/EXTI_interface.h b/EXTI/include/EXTI_interface.h
@@ -0,0 +1,44 @@
+/**********************************************************/
+/* Author    : Gehad Elkoumy                              */
+/* Date      : 6 DEC 2022                                 */
+/* Version   : V01                                        */
+/**********************************************************/
+#ifndef EXTI_INTERFACE_H
+#define EXTI_INTERFACE_H
+
+
+void MEXTI_voidInit();
+void MEXTI_voidEnableEXTI(u8 Copy_u8EXTILine);
+void MEXTI_voidDisableEXTI(u8 Copy_u8EXTILine);
+void MEXTI_voidSoftwareTrigger(u8 Copy_u8EXTILine);
+void MEXTI_voidSetSignalLatch(u8 Copy_u8EXTILine , u8 Copy_u8EXTIMode);
+
+/*pointer to function*/
+void EXTI_voidSetCallBack(void (*ptr) (void) , u8 Copy_u8EXTILine);
+
+
+#define			LINE0				0
+#define			LINE1				1
+#define			LINE2				2
+#define			LINE3				3
+#define			LINE4				4
+#define			LINE5				5
+#define			LINE6				6
+#define			LINE7				7
+#define			LINE8				8
+#define			LINE9				9
+#define			LINE10				10
+#define			LINE11				11
+#define			LINE12				12
+#define			LINE13				13
+#define			LINE14				14
+#define			LINE15				15
+
+
+
+#define			RISING				0
+#define			FALLING				1
+#define			ON_CHANGE			2   /*any change (rising & falling)*/
+
+
+#endif
diff --git a/EXTI/include/EXTI_private.h b/EXTI/include/EXTI_private.h
@@ -0,0 +1,25 @@
+/**********************************************************/
+/* Author    : Gehad Elkoumy                              */
+/* Date      : 6 DEC 2022                                 */
+/* Version   : V01                                        */
+/**********************************************************/
+#ifndef EXTI_PRIVATE_H
+#define EXTI_PRIVATE_H
+
+/*must be ordered*/
+typedef struct{
+	volatile u32 IMR;
+	volatile u32 EMR;
+	volatile u32 RTSR;
+	volatile u32 FTSR;
+	volatile u32 SWIER;
+	volatile u32 PR;
+
+}EXTI_t;
+
+/*without dereference as it act as pointer*/
+#define		EXTI  	 	((volatile EXTI_t *) 0x40010400 )
+
+static void (*EXTI_GlobalPtr[16]) (void) ;
+
+#endif
diff --git a/EXTI/src/EXTI_program.c b/EXTI/src/EXTI_program.c
@@ -0,0 +1,206 @@
+/**********************************************************/
+/* Author    : Gehad Elkoumy                              */
+/* Date      : 6 DEC 2022                                 */
+/* Version   : V01                                        */
+/**********************************************************/
+
+#include "STD_TYPES.h"
+#include "BIT_MATH.h"
+
+#include "EXTI_interface.h"
+#include "EXTI_config.h"  
+#include "EXTI_private.h"
+
+
+
+void MEXTI_voidInit()
+{
+	#if 	EXTI_MODE	== 	RISING
+		SET_BIT(EXTI -> RTSR , EXTI_LINE);
+	#elif 	EXTI_MODE	== 	FALLING
+		SET_BIT(EXTI -> FTSR , EXTI_LINE);
+	#elif	EXTI_MODE	==	ON_CHANGE
+		SET_BIT(EXTI -> RTSR , EXTI_LINE);
+		SET_BIT(EXTI -> FTSR , EXTI_LINE);
+	#else 	
+		#error "Wrong Mode"
+	#endif
+
+	/*Disable interrupt*/
+	CLR_BIT(EXTI -> IMR , EXTI_LINE);
+}
+
+
+void MEXTI_voidEnableEXTI(u8 Copy_u8EXTILine)
+{
+	SET_BIT(EXTI -> IMR , Copy_u8EXTILine);
+}
+
+
+void MEXTI_voidDisableEXTI(u8 Copy_u8EXTILine)
+{
+	CLR_BIT(EXTI -> IMR , Copy_u8EXTILine);
+}
+
+
+void MEXTI_voidSoftwareTrigger(u8 Copy_u8EXTILine)
+{
+	SET_BIT(EXTI -> IMR , Copy_u8EXTILine);
+	CLR_BIT(EXTI -> PR , Copy_u8EXTILine);
+	SET_BIT(EXTI -> SWIER , Copy_u8EXTILine);
+}
+
+
+             /*changing mode & line in run time*/
+void MEXTI_voidSetSignalLatch(u8 Copy_u8EXTILine , u8 Copy_u8EXTIMode)
+{
+	switch(Copy_u8EXTIMode)
+	{
+		case RISING :
+			SET_BIT(EXTI -> RTSR , Copy_u8EXTILine);
+			break;
+
+		case FALLING :
+			SET_BIT(EXTI -> FTSR , Copy_u8EXTILine); 	
+			break;
+
+		case ON_CHANGE :
+			SET_BIT(EXTI -> RTSR , Copy_u8EXTILine);
+			SET_BIT(EXTI -> FTSR , Copy_u8EXTILine); 	
+			break;
+	}
+	SET_BIT(EXTI -> IMR , Copy_u8EXTILine);
+}
+
+
+void EXTI_voidSetCallBack(void (*ptr) (void) , u8 Copy_u8EXTILine)
+{
+	EXTI_GlobalPtr[Copy_u8EXTILine] = ptr;
+}
+
+
+void EXTI0_IRQHandler(void)
+{
+	EXTI_GlobalPtr[0]();
+	/*clear pending bit*/
+	SET_BIT(EXTI -> PR , 0);
+}
+
+void EXTI1_IRQHandler(void)
+{
+	EXTI_GlobalPtr[1]();
+	/*clear pending bit*/
+	SET_BIT(EXTI -> PR , 1);
+}
+
+void EXTI2_IRQHandler(void)
+{
+	EXTI_GlobalPtr[2]();
+	/*clear pending bit*/
+	SET_BIT(EXTI -> PR , 2);
+}
+
+void EXTI3_IRQHandler(void)
+{
+	EXTI_GlobalPtr[3]();
+	/*clear pending bit*/
+	SET_BIT(EXTI -> PR , 3);
+}
+
+void EXTI4_IRQHandler(void)
+{
+	EXTI_GlobalPtr[4]();
+	/*clear pending bit*/
+	SET_BIT(EXTI -> PR , 4);
+}
+
+void EXTI9_5_IRQHandler(void)
+{
+	u8 PinValue_5 , PinValue_6 , PinValue_7 , PinValue_8 , PinValue_9;
+
+	PinValue_5 = GET_BIT(EXTI->PR,5);
+	PinValue_6 = GET_BIT(EXTI->PR,6);
+	PinValue_7 = GET_BIT(EXTI->PR,7);
+	PinValue_8 = GET_BIT(EXTI->PR,8);
+	PinValue_9 = GET_BIT(EXTI->PR,9);
+
+	if (PinValue_5 == 1)
+	{
+		EXTI_GlobalPtr[5]();
+		SET_BIT(EXTI -> PR , 5);
+	}
+
+	if (PinValue_6 == 1)
+	{
+		EXTI_GlobalPtr[6]();
+		SET_BIT(EXTI -> PR , 6);
+	}
+
+	if (PinValue_7 == 1)
+	{
+		EXTI_GlobalPtr[7]();
+		SET_BIT(EXTI -> PR , 7);
+	}
+
+	if (PinValue_8 == 1)
+	{
+		EXTI_GlobalPtr[8]();
+		SET_BIT(EXTI -> PR , 8);
+	}
+
+	if (PinValue_9 == 1)
+	{
+		EXTI_GlobalPtr[9]();
+		SET_BIT(EXTI -> PR , 9);
+	}
+
+}
+
+void EXTI15_10_IRQHandler(void)
+{
+	u8 PinValue_10 , PinValue_11 , PinValue_12 , PinValue_13 , PinValue_14 , PinValue_15;
+
+	PinValue_10 = GET_BIT(EXTI->PR,10);
+	PinValue_11 = GET_BIT(EXTI->PR,11);
+	PinValue_12 = GET_BIT(EXTI->PR,12);
+	PinValue_13 = GET_BIT(EXTI->PR,13);
+	PinValue_14 = GET_BIT(EXTI->PR,14);
+	PinValue_15 = GET_BIT(EXTI->PR,14);
+
+	if (PinValue_10 == 1)
+	{
+		EXTI_GlobalPtr[10]();
+		SET_BIT(EXTI -> PR , 10);
+	}
+
+	if (PinValue_11 == 1)
+	{
+		EXTI_GlobalPtr[11]();
+		SET_BIT(EXTI -> PR , 11);
+	}
+
+	if (PinValue_12 == 1)
+	{
+		EXTI_GlobalPtr[12]();
+		SET_BIT(EXTI -> PR , 12);
+	}
+
+	if (PinValue_13 == 1)
+	{
+		EXTI_GlobalPtr[13]();
+		SET_BIT(EXTI -> PR , 13);
+	}
+
+	if (PinValue_14 == 1)
+	{
+		EXTI_GlobalPtr[14]();
+		SET_BIT(EXTI -> PR , 14);
+	}
+
+	if (PinValue_15 == 1)
+	{
+		EXTI_GlobalPtr[15]();
+		SET_BIT(EXTI -> PR , 15);
+	}
+
+}
diff --git a/EXTI/src/main.c b/EXTI/src/main.c
@@ -0,0 +1,74 @@
+/*
+ * main.c
+ *
+ *  Created on: Feb 18, 2023
+ *      Author: HP
+ */
+
+#include"STD_TYPES.h"
+#include"BIT_MATH.h"
+
+#include"RCC_interface.h"
+#include"DIO_interface.h"
+#include"NVIC_interface.h"
+#include"AFIO_interface.h"
+#include"EXTI_interface.h"
+
+void TakeAction8(void)
+{
+	MGPIO_VoidSetPinValue(GPIOA,PIN0,HIGH);
+}
+
+void TakeAction9(void)
+{
+	MGPIO_VoidSetPinValue(GPIOA,PIN1,HIGH);
+}
+
+
+void main (void)
+{
+	/*initialize clocks*/
+	RCC_voidInitSysClock();
+	/*Enable GPIOA clock */
+	RCC_voidEnableClock(RCC_APB2,2);
+	//RCC_voidEnableClock(RCC_APB2,3);
+	/*Enable AFIO clock */
+	RCC_voidEnableClock(RCC_APB2,0);
+
+	/*AFIO*//**/
+	MAFIO_voidSetEXTIConfiguration(LINE8 , AFIOA);
+	MAFIO_voidSetEXTIConfiguration(LINE9 , AFIOA);
+
+
+	EXTI_voidSetCallBack(TakeAction9 , LINE9);
+	EXTI_voidSetCallBack(TakeAction8 , LINE8);
+
+	/*pin modes*/
+	MGPIO_VoidSetPinDirection(GPIOA,PIN8,INPUT_PULLUP_PULLDOWN);
+	MGPIO_VoidSetPinDirection(GPIOA,PIN9,INPUT_PULLUP_PULLDOWN);
+
+	MGPIO_VoidSetPinDirection(GPIOA,PIN0,OUTPUT_2MHZ_PP);
+	MGPIO_VoidSetPinDirection(GPIOA,PIN1,OUTPUT_2MHZ_PP);
+
+	MGPIO_VoidSetPinValue(GPIOA,PIN8,HIGH);
+	MGPIO_VoidSetPinValue(GPIOA,PIN9,HIGH);
+
+	/*initialize EXTI*/
+	MEXTI_voidInit();
+	MEXTI_voidSetSignalLatch(LINE8 , FALLING);
+	MEXTI_voidSetSignalLatch(LINE9 , FALLING);
+
+
+	/*Enable EXTI0 interrupt from NVIC*/
+	MNVIC_voidEnableInterrupt(23);
+	/*set priority for EXT0*/
+	//MNVIC_voidSetPriority(23,1,0);
+
+
+
+	while(1)
+	{
+
+	}
+}
+