[AC2] Aula05

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

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;
+}