From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 .../mi2/Termin2/Termin2Aufgabe4a2.c                | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Bachelor/Mikroprozessorsysteme2/mi2/Termin2/Termin2Aufgabe4a2.c

(limited to 'Bachelor/Mikroprozessorsysteme2/mi2/Termin2/Termin2Aufgabe4a2.c')

diff --git a/Bachelor/Mikroprozessorsysteme2/mi2/Termin2/Termin2Aufgabe4a2.c b/Bachelor/Mikroprozessorsysteme2/mi2/Termin2/Termin2Aufgabe4a2.c
new file mode 100644
index 0000000..86c839e
--- /dev/null
+++ b/Bachelor/Mikroprozessorsysteme2/mi2/Termin2/Termin2Aufgabe4a2.c
@@ -0,0 +1,67 @@
+// Lösung zu Termin2
+// Aufgabe 4
+// Namen: __________; ___________
+// Matr.: __________; ___________
+// vom :  __________
+//
+#include "../mi2/h/pio.h"
+#include "../mi2/h/pmc.h"
+#include "../mi2/h/aic.h"
+
+StructPMC* myPMC = PMC_BASE;
+StructAIC* myAIC = AIC_BASE;
+StructPIO* myPIOB = PIOB_BASE;
+
+void taste_irq_handler (void) __attribute__ ((interrupt));
+
+void taste_irq_handler (void)
+{
+	
+	volatile int keyPressed = myPIOB->PIO_ISR;
+	
+	if (!(keyPressed & KEY1))
+		myPIOB->PIO_SODR = 0x100;
+	//if (!(myPIOB->PIO_PDSR & KEY2))
+	if (!(keyPressed &  KEY2))
+		myPIOB->PIO_CODR = 0x100;
+		
+	myAIC->AIC_EOICR = 0x01;
+																				// to signal end of Interrupt Service Routine
+}
+
+int main(void)
+{	
+	myAIC->AIC_EOICR = myPIOB->PIO_ISR;
+	myPIOB->PIO_IDR = 0xFFFFFFFF;
+		
+	
+	// Initialize PIOB
+	myPIOB->PIO_PER = KEY1|KEY2|LED1|LED2;  // Enable PIO for SW1,SW2,LED1,LED2
+	//myPIOB->PIO_OER = LED1|LED2;					// Set LED1 and LED2 as output
+	myPIOB->PIO_OER = LED1;					// Set LED1 and LED2 as output
+	myPIOB->PIO_CODR = 0x000000FF;					// Clear Output Data Register
+	
+	
+	// Enable Interrupts in CPU
+	// done by OS
+	
+	// disable PIOB Interrupt in AIC
+	myAIC->AIC_IDCR = (1<<PIOB_ID);
+	// Enable Interrupt for PIOB in AIC
+	myAIC->AIC_SMR[PIOB_ID] = AIC_SRCTYPE_EXT_LOW_LEVEL; // which register? what to put in it? 0x1 for low
+	myAIC->AIC_SVR[PIOB_ID] = (volatile unsigned int)&taste_irq_handler;  // Address of Interrupt handling routine...
+	
+	// enable PIOB Interrupt in AIC
+	myAIC->AIC_IECR	= (1<<PIOB_ID);				// Enable Interrupt for PIOB
+	
+	// enable PIOB Interrupt
+	myPIOB->PIO_IER  = KEY1|KEY2; 					// what to put here? 
+	
+	myPMC->PMC_PCER = (1<<PIOB_ID);	// Clock PIO B
+	// loop to infinity
+	while(1)
+	{
+	}
+	
+	return 0;
+}
-- 
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