work on getting it to work. problems still remain with linking the interrupt files into the project (it seems so)

env/csl/stm32f042/Device/hardwareDescription.h

@@ -297,6 +297,41 @@ static const uint8_t i2cBus_Rst_bitPos[MAX_I2C_CHANNEL_COUNT] = {
 };
 
 
+// Interrupts
+ 
+/*! interrupt types. These act as indexes for the */
+typedef enum {
+	TIM2_UPDATE,
+	TIM2_COUNTERCOMPARE_1,
+	TIM2_COUNTERCOMPARE_2,
+	TIM2_COUNTERCOMPARE_3,
+	TIM2_COUNTERCOMPARE_4,
+	TIM2_TRIGGER,
+	TIM2_CAPTURECOMPARE_1,
+	TIM2_CAPTURECOMPARE_2,
+	TIM2_CAPTURECOMPARE_3,
+  	TIM2_CAPTURECOMAPRE_4,
+	intTypeEND
+}intrType_t;
+
+uint32_t intHandlerList[intTypeEND]={
+0,0,0,0,0,0,0,0,0,0};
+
+static const uint8_t interruptTypeIndexList[intTypeEND] =
+{
+	TIM2_IRQn,
+	TIM2_IRQn,
+	TIM2_IRQn,
+	TIM2_IRQn,
+	TIM2_IRQn,
+	TIM2_IRQn,
+	TIM2_IRQn,
+	TIM2_IRQn,
+	TIM2_IRQn,
+	TIM2_IRQn	
+};
+
+
 #ifdef __cplusplus
 }
 #endif

env/csl/stm32f042/Src/imp_interrupt.c

@@ -0,0 +1,97 @@
+#include "interrupt.h"
+
+static void defaultHandler(){};
+
+// pointers to dedicated interrupt handlers
+
+void intInit(
+		intrType_t intType,
+		intHandler_t handler,	
+		uint8_t priority)
+{
+	NVIC_SetPriority(interruptTypeIndexList[intType], priority);
+
+	// TODO: add index ceck!
+	intHandlerList[intType] = (uint32_t)handler; 
+}
+
+void intEnableAll()
+{
+	__enable_irq();
+}
+
+void intDissableAll()
+{
+	__disable_irq();
+}
+
+void intEnable(
+		intrType_t intType)
+{
+	NVIC_EnableIRQ(interruptTypeIndexList[intType]);
+}
+
+void intDissable(
+		intrType_t intType)
+{
+	NVIC_DisableIRQ(interruptTypeIndexList[intType]);
+}
+
+// Interrupt service routines
+
+void TIM2_IRQHandler()
+{
+	
+	if(TIM2->SR & TIM_SR_UIF) {
+		// clear flag
+		TIM2-> SR &= ~TIM_SR_UIF;
+		
+		//TODO: call handler here
+		((intHandler_t)(intHandlerList[TIM2_UPDATE]))();
+	}
+
+	if(TIM2->SR & TIM_SR_CC1IF) {
+		TIM2-> SR &= ~TIM_SR_CC1IF;
+		
+	}
+
+	if(TIM2->SR & TIM_SR_CC2IF) {
+		TIM2-> SR &= ~TIM_SR_CC2IF;
+		
+	}
+
+	if(TIM2->SR & TIM_SR_CC3IF) {
+		TIM2-> SR &= ~TIM_SR_CC3IF;
+		
+	}
+
+	if(TIM2->SR & TIM_SR_CC4IF) {
+		TIM2-> SR &= ~TIM_SR_CC4IF;
+		
+	}
+
+	if(TIM2->SR & TIM_SR_TIF) {
+		TIM2-> SR &= ~TIM_SR_TIF;
+		
+	}
+
+	if(TIM2->SR & TIM_SR_CC1OF) {
+		TIM2-> SR &= ~TIM_SR_CC1OF;
+		
+	}
+
+	if(TIM2->SR & TIM_SR_CC2OF) {
+		TIM2-> SR &= ~TIM_SR_CC2OF;
+		
+	}
+
+	if(TIM2->SR & TIM_SR_CC3OF) {
+		TIM2-> SR &= ~TIM_SR_CC3OF;
+		
+	}
+
+	if(TIM2->SR & TIM_SR_CC4OF) {
+		TIM2-> SR &= ~TIM_SR_CC4OF;
+		
+	}
+}

env/csl/stm32f042/config.cmake

@@ -75,3 +75,4 @@ list(APPEND EXTRA_LIBS sub::max7219)
 list(APPEND EXTRA_LIBS sub::spi)
 list(APPEND EXTRA_LIBS sub::i2c)
 list(APPEND EXTRA_LIBS sub::pin)
+list(APPEND EXTRA LIBS sub::interrupt)

env/periferals/CMakeLists.txt

@@ -41,5 +41,12 @@ target_compile_definitions(TIMER PRIVATE ${C_DEFS})
 target_include_directories(TIMER PUBLIC ${PERIFERALS_DIR} ${CSL_INCLUDES})
 add_library(sub::timer ALIAS TIMER)
 
+add_library(INTERRUPT ${CSL_SOURCES}/imp_interrupt.c)
+target_compile_options(INTERRUPT PRIVATE ${C_FLAGS})
+target_compile_definitions(INTERRUPT PRIVATE ${C_DEFS})
+target_include_directories(INTERRUPT PUBLIC ${PERIFERALS_DIR} ${CSL_INCLUDES})
+add_library(sub::interrupt ALIAS INTERRUPT)
+
+
 
 

env/periferals/interrupt.c

@@ -0,0 +1,2 @@
+#include "interrupt.h"
+

env/periferals/interrupt.h

@@ -0,0 +1,100 @@
+/**
+**************************************************************************************************
+* @file		interrupt.h
+* @author	Kerem Yollu & Edwin Koch
+* @date		30.10.2022
+* @version	1.0
+************************************************************************************************** 
+* @brief	This is the genral interface for interrupts.
+* 
+* **Detailed Description :**
+* This the spi interface and belongs to the interface layer.
+*
+**************************************************************************************************
+*/
+
+
+#ifndef _INTERRUPT_H_
+#define _INTERRUPT_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include "hardwareDescription.h"
+
+/*! interrupt callback type for the handler */
+typedef void (*intHandler_t)(void);
+
+/**
+ * @brief Initialize Interrupt
+ *
+ * Initialize Interrupt by choosing the interrupt type, passing the functionpointer to the handler
+ * and selecting the priority.
+ * The interrupt will be automatically enabled and will be able to run after  intEnableAll is
+ * called. If the interrupt should only run at a specific even one can controll it by calling
+ * intDissable prior to calling intEnableAll and calling intEnbale at a specific point and
+ * dissabling it again with intDisable 
+ * When the desired interrupt occures the handler will be called. 
+ * The interrupt type and priority level is dependent on the architecture of the target MCU. 
+ * To find more information on what can be done one must read the documentation specific to the
+ * target MCU.
+ *
+ * @param intType interrupt type
+ * @param handler the interrupthandler 
+ * @param priority the interrupt priority
+ */
+void intInit(
+		intrType_t intType,
+		intHandler_t handler,	
+		uint8_t priority);
+
+/**
+ * @brief Enable all Interrupts
+ *
+ * Enables all interrupts globally.
+ *
+ */
+void intEnableAll();
+
+/**
+ * @brief Disable all Interrups
+ *
+ * Dissables all interrupts globally exept the non maskable ones given by the architecture of the
+ * MCU.
+ */
+void intDisableAll();
+
+/**
+ * @brief Enable one interrupt type
+ *
+ * The Interrupt for the desired interrupt will be enabled. This means that interrupt of that 
+ * type will occure. To revert this intDisable musst be called.
+ * It can be called when interrupts are are globally allowed or when disabled.
+ * 
+ * @param intType interrupt type
+ */
+void intEnable(
+		intrType_t intType);
+
+
+/**
+ * @brief Dissable one interrupt type
+ *
+ * The Interrupt for the desired interrupt will be disabled. This means that no interrupt of that 
+ * type will occure. To revert this intEnable musst be called.
+ * It can be called when interrupts are are globally allowed or when dissabled.
+ * It will not stop other all interrupts in contrast to intDissableAll.
+ * 
+ * @param intType interrupt type
+ */
+void intDisable(
+		intrType_t intType);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

main.c

@@ -3,6 +3,14 @@
 #include "deviceSetup.h"
 #include "usart.h"
 #include "ascii.h"
+#include "interrupt.h"
+#include "timer.h"
+
+
+void toggleLED()
+{
+	pinToggle(pinB3);
+}
 
 int main(int argc, char *argv[])
 {
@@ -42,7 +50,34 @@ int main(int argc, char *argv[])
 	print_Usart(usart2, "\n\r"); 
 	print_Usart(usart2, "\n\r"); 
 	print_Usart(usart2, "All is working fine\n\r"); 
+
+
+	for(i = 0 ; i < 10 ; i++) {
+		delayMs(100); 
+		pinToggle(pinB3);
+		delayMs(200);
+		pinToggle(pinB3);
+		delayMs(300);
+		pinToggle(pinB3);
+		delayMs(400);
+		pinToggle(pinB3);
+		delayMs(500);
+	}
+
+	pinWrite(pinB3,0);
+
+	timerInitCounter(timer_2,(8E6/20E3)-1,10000-1,upCounting);
+
+	// TODO: Needs to be implemented into imp_interrupt.c
+	//TIM2->EGR = TIM_EGR_UG;
+	TIM2->DIER = TIM_DIER_UIE;
 	
+	intInit(TIM2_UPDATE,toggleLED,2);
+	intEnable(TIM2_UPDATE);
+	timerSart(timer_2);
+
+
+	while(1);
 	while(1)
 	{
 		delayMs(100);