[AC2] Aula04

Until part2 ex5

Signed-off-by: TiagoRG <tiago.rgarcia@ua.pt>

2ano/2semestre/ac2/aula04/part1-2.c

@@ -7,16 +7,14 @@ void delay(int ms) {
 
 int main() {
     // Configure RE6-RE3 as output
-    TRISE = TRISE & 0xFF87;
+    TRISE &= 0xFF87;
     // Initialize the counter
     unsigned int counter = 0;
     
     while (1) {
-        // Update value
-        LATE = (LATE & 0xFF87) // Reset bits 6-3
-               | counter << 3; // Merge with counter
+        LATE = (LATE & 0xFF87) | counter++ << 3;
+        counter %= 10;
         
         delay(460);
-        counter = (counter + 1) % 10;
     }
 }

2ano/2semestre/ac2/aula04/part1-3.c

@@ -7,16 +7,14 @@ void delay(int ms) {
 
 int main() {
     // Configure RE6-RE3 as output
-    TRISE = TRISE & 0xFF87;
+    TRISE &= 0xFF87;
     // Initialize the counter
     unsigned int counter = 0;
     
     while (1) {
-        // Update value
-        LATE = (LATE & 0xFF87) // Reset bits 6-3
-               | counter << 3; // Merge with counter
+        LATE = (LATE & 0xFF87) | counter << 3;
+        counter = (counter + 9) % 10;
         
         delay(370);
-        counter = (counter + 9) % 10;
     }
 }

2ano/2semestre/ac2/aula04/part2-1.c

@@ -0,0 +1,14 @@
+#include <detpic32.h>
+
+int main() {
+    // Configure ports as output
+    TRISB &= 0x80FF; // Use bits 14-8
+    TRISD &= 0xFF9F; // Use bits 6-5
+
+    // Select only least significative display
+    LATD = (LATD & 0xFF9F) | 0x0020;
+
+    while (1) LATB = LATB & 0x80FF | 0x0100 << (getChar() - 'a');
+
+    return 0;
+}

2ano/2semestre/ac2/aula04/part2-2.c

@@ -0,0 +1,26 @@
+#include <detpic32.h>
+
+void delay(unsigned int ms) {
+    resetCoreTimer();
+    while(readCoreTimer() < 20000 * ms);
+}
+
+int main() {
+    // Configure ports as output
+    TRISB &= 0x80FF; // Use bits 14-8
+    TRISD &= 0xFF9F; // Use bits 6-5
+
+    // Select least significative display
+    LATD = (LATD & 0xFF9F) | 0x0020;
+
+    while (1) {
+        unsigned char segment = 1;
+        for (; segment < (1<<7); segment <<= 1) {
+            LATB = (LATB & 0x80FF) | segment << 8;
+            delay(500);
+        }
+        LATD ^= 0x0060;
+    }
+
+    return 0;
+}

2ano/2semestre/ac2/aula04/part2-5.c

@@ -0,0 +1,25 @@
+#include <detpic32.h>
+
+const unsigned int dis7Scodes[] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D,
+                                   0xFD, 0x07, 0x7F, 0x6F, 0x77, 0xFC,
+                                   0x39, 0x5E, 0xF9, 0xF1};
+
+void delay(unsigned int ms) {
+    resetCoreTimer();
+    while (readCoreTimer() < 20000 * ms);
+}
+
+int main() {
+    TRISB &= 0x80FF;
+    TRISD &= 0xFF9F;
+    LATD = (LATD & 0xFF9F) | 0x0020;
+
+    unsigned int n = 0;
+    while (1) {
+        LATB = (LATB & 0x80FF) | dis7Scodes[n++] << 8;
+        n %= 16;
+        delay(500);
+    }
+
+    return 0;
+}

2ano/2semestre/ac2/aula05/part1.c

@@ -0,0 +1,44 @@
+#include <detpic32.h>
+
+const unsigned int dis7Scodes[] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D,
+                                   0xFD, 0x07, 0x7F, 0x6F, 0x77, 0xFC,
+                                   0x39, 0x5E, 0xF9, 0xF1};
+
+typedef enum { HIGH, LOW } flag;
+
+void send2displays(unsigned char value) {
+    static flag f = LOW;
+
+    if (f == HIGH) {
+        LATD = (LATD & 0xFF9F) | 0x0040;
+        LATB = (LATB & 0x80FF) | dis7Scodes[value >> 4] << 8;
+        f = LOW;
+    } else {
+        LATD = (LATD & 0xFF9F) | 0x0020;
+        LATB = (LATB & 0x80FF) | dis7Scodes[value & 0x0F] << 8;
+        f = HIGH;
+    }
+}
+
+void delay(unsigned int ms) {
+    resetCoreTimer();
+    while (readCoreTimer() < ms * 20000);
+}
+
+int main() {
+    TRISB &= 0x80FF;
+    TRISD &= 0xFF9F;
+
+    int counter = 0;
+
+    while (1) {
+        int i = 0;
+        do {
+            send2displays(counter % 255);
+            delay(10);
+        } while (++i < 20);
+        counter++;
+    }
+
+    return 0;
+}

2ano/2semestre/ac2/aula05/part2.c

@@ -0,0 +1,64 @@
+#include <detpic32.h>
+
+const unsigned int dis7Scodes[] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D,
+                                   0xFD, 0x07, 0x7F, 0x6F, 0x77, 0xFC,
+                                   0x39, 0x5E, 0xF9, 0xF1};
+
+typedef enum { HIGH, LOW } flag;
+
+unsigned char toBdc(unsigned char value) {
+    return ((value / 10) << 4) + (value % 10);
+}
+
+void send2displays(unsigned char value) {
+    static flag f = LOW;
+    value = toBdc(value);
+    unsigned char high = dis7Scodes[value >> 4];
+    unsigned char low = dis7Scodes[value & 0x0F];
+
+    if (f == HIGH) {
+        LATD = (LATD & 0xFF9F) | 0x0040;
+        LATB = (LATB & 0x80FF) | high << 8;
+        f = LOW;
+    } else {
+        LATD = (LATD & 0xFF9F) | 0x0020;
+        LATB = (LATB & 0x80FF) | low << 8;
+        f = HIGH;
+    }
+}
+
+void delay(unsigned int ms) {
+    resetCoreTimer();
+    while (readCoreTimer() < ms * 20000);
+}
+
+int main() {
+    TRISB = (TRISB & 0x80FF) | 0x0001;
+    TRISD &= 0xFF9F;
+    TRISC &= 0xBFFF;
+
+    int counter = 0;
+    int toggler = 0;
+
+    while (1) {
+        int i = 0;
+        int sw0 = PORTB & 0x0001;
+        do {
+            send2displays(counter);
+            delay(10);
+            LATC &= 0xBFFF;
+            if (toggler++ < 500) LATC |= 0x4000;
+        } while (++i < (sw0 ? 20 : 50));
+        counter += sw0 ? 1 : -1;
+        if (counter < 0) {
+            counter = 59;
+            toggler = 0;
+        }
+        if (counter > 59) {
+            counter = 0;
+            toggler = 0;
+        }
+    }
+
+    return 0;
+}