Merge branch 'master' of gitlab.pld.ttu.ee:vielex/bes_labs_2019

Labware/Lab8_SwitchLEDinterface/SwitchLEDInterface.c

@@ -12,27 +12,18 @@
 #include "TExaS.h"
 #include "tm4c123gh6pm.h"
 
-#define GPIO_PORTE_DATA_R       (*((volatile unsigned long *)0x400243FC))
-#define GPIO_PORTE_DIR_R        (*((volatile unsigned long *)0x40024400))
-#define GPIO_PORTE_AFSEL_R      (*((volatile unsigned long *)0x40024420))
-#define GPIO_PORTE_PUR_R        (*((volatile unsigned long *)0x40024510))
-#define GPIO_PORTE_DEN_R        (*((volatile unsigned long *)0x4002451C))
-#define GPIO_PORTE_LOCK_R       (*((volatile unsigned long *)0x40024520))
-#define GPIO_PORTE_CR_R         (*((volatile unsigned long *)0x40024524))
-#define GPIO_PORTE_AMSEL_R      (*((volatile unsigned long *)0x40024528))
-#define GPIO_PORTE_PCTL_R       (*((volatile unsigned long *)0x4002452C))
-#define SYSCTL_RCGC2_R          (*((volatile unsigned long *)0x400FE108))
-
 // ***** 2. Global Declarations Section *****
-unsigned long SW4;
-unsigned long Out;
 
 // FUNCTION PROTOTYPES: Each subroutine defined
 void DisableInterrupts(void); // Disable interrupts
 void EnableInterrupts(void);  // Enable interrupts
-void PortE_init(void);        // Init port PE0 PE1
-void Delay1ms(unsigned long msec);
+void PortE_Init(void);
+void Delay100ms(unsigned long time);
 
+//unsigned long arm,sensor;
+//void delayms(unsigned long ms);
+//void Delay(void);
+//void EnableInterrupts(void);
 // ***** 3. Subroutines Section *****
 
 // PE0, PB0, or PA2 connected to positive logic momentary switch using 10k ohm pull down resistor
@@ -40,41 +31,52 @@ void Delay1ms(unsigned long msec);
 // To avoid damaging your hardware, ensure that your circuits match the schematic
 // shown in Lab8_artist.sch (PCB Artist schematic file) or 
 // Lab8_artist.pdf (compatible with many various readers like Adobe Acrobat).
-int main(void) { 
+
+unsigned long In;  // input from PF4
+unsigned long Out; // output to PF2 (blue LED)
+
+unsigned long SW;
+int main(void){ 
 //**********************************************************************
 // The following version tests input on PE0 and output on PE1
 //**********************************************************************
   TExaS_Init(SW_PIN_PE0, LED_PIN_PE1, ScopeOn);  // activate grader and set system clock to 80 MHz
-  PortE_init();
-  EnableInterrupts();           // enable interrupts for the grader
+  
+	PortE_Init();    // make PF3-1 out (PF3-1 built-in LEDs)
+
   while(1){
-    SW4 = GPIO_PORTE_DATA_R&0x00;
-    if (SW4) {
-      GPIO_PORTE_DATA_R = 0x02;
+
+    Delay100ms(1);
+		SW = GPIO_PORTE_DATA_R&0x01;   		  // read PE0 into the switch
+		if(SW == 1){
+			GPIO_PORTE_DATA_R ^=0x02;					// Toggle PE1
+		}else{
+			GPIO_PORTE_DATA_R |=0x02;					// Set PE1, LED On
 		}
-    Delay1ms(100);
+
   }
+  
 }
 
-void PortE_init() { volatile unsigned long delay;
-  SYSCTL_RCGC2_R |= 0x00000010;      // 1) F clock
-  delay = SYSCTL_RCGC2_R;            // delay to allow clock to stabilize     
-  GPIO_PORTE_AMSEL_R &= 0x00;        // 2) disable analog function
-  GPIO_PORTE_PCTL_R &= 0x00000000;   // 3) GPIO clear bit PCTL  
-  GPIO_PORTE_DIR_R &= ~0x00;         // 4.1) PF0 input,
-  GPIO_PORTE_DIR_R |= 0x01;          // 4.2) PF1 output  
-  GPIO_PORTE_AFSEL_R &= 0x00;        // 5) no alternate function
-  GPIO_PORTE_PUR_R |= 0x10;          // 6) enable pullup resistor on PF4       
-  GPIO_PORTE_DEN_R |= 0x11;          // 7) enable digital pins PF1-PF0
+void PortE_Init(void){ volatile unsigned long delay;
+  SYSCTL_RCGC2_R |= 0x00000010;     // 1) activate clock for Port E
+  delay = SYSCTL_RCGC2_R;           // allow time for clock to start
+  GPIO_PORTE_AMSEL_R = 0x00;        // 3) disable analog on PF
+  GPIO_PORTE_PCTL_R = 0x00000000;   // 4) PCTL GPIO on PF4-0
+  GPIO_PORTE_DIR_R = 0x02;          // 5) PE1 OUTPUT, PE0 INPUT -- 0000 0010
+  GPIO_PORTE_AFSEL_R = 0x00;        // 6) disable alt funct on PF7-0  no alternate function
+  GPIO_PORTE_DEN_R = 0x03;          // 7) enable digital I/O on PF4-0
+	GPIO_PORTE_DATA_R |=0x02;  				// Initialize led ON
+
 }
 
-void Delay1ms(unsigned long msec) {
-  unsigned long count;
-  while(msec > 0) {
-    count = 1600;
-    while(count > 0) {
-      count--;
+void Delay100ms(unsigned long time){
+  unsigned long i;
+  while(time > 0){
+    i = 1333333;  // 100ms
+    while(i > 0){
+      i = i - 1;
     }
-    ms--;
+    time = time - 1; // decrements every 100 ms
   }
 }