[AC2] Aula09

- Missing addicionals
- Aula08 fix
- pfull fix

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

2ano/2semestre/ac2/aula08/part2-ex2.c

@@ -2,8 +2,8 @@
 
 void _int_(8) isr_T2() {
     static int c = 0;
-    if (c++ == 6) {
+    if (++c == 6) {
-        IEC0bits.T2IE = 0;
+        T2CONbits.TON = 0;
         LATE &= 0xFFFE;
         c = 0;
     }
@@ -12,7 +12,8 @@ void _int_(8) isr_T2() {
 
 void _int_(7) isr_INT1() {
     LATE |= 0x0001;
-    IEC0bits.T2IE = 1;
+    TMR2 = 0;
+    T2CONbits.TON = 1;
     IFS0bits.INT1IF = 0;
 }
 
@@ -24,14 +25,14 @@ int main() {
     IPC1bits.INT1IP = 2;
     IEC0bits.INT1IE = 1;
     IFS0bits.INT1IF = 0;
+    INTCONbits.INT1EP = 0;
 
     IPC2bits.T2IP = 2;
     IFS0bits.T2IF = 0;
 
     T2CONbits.TCKPS = 7;
     PR2 = 39062;
-    TMR2 = 0;
+    IEC0bits.T2IE = 1;
-    T2CONbits.TON = 1;
 
     EnableInterrupts();
 

2ano/2semestre/ac2/aula09/part1.c

@@ -0,0 +1,91 @@
+#include <detpic32.h>
+
+#define SAMPLES 4
+
+volatile int voltage = 0;
+
+const unsigned int dis7Scodes[] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D,
+                                   0xFD, 0x07, 0x7F, 0x6F, 0x77, 0xFC,
+                                   0x39, 0x5E, 0xF9, 0xF1};
+
+typedef enum { HIGH, LOW } display;
+
+void send2displays(unsigned char value) {
+    static display flag = LOW;
+    value = ((value / 10) << 4) + (value % 10);
+    unsigned char high = dis7Scodes[value >> 4];
+    unsigned char low = dis7Scodes[value & 0x0F];
+
+    if (flag == HIGH) {
+        LATD = (LATD & 0xFF9F) | 0x0040;
+        LATB = (LATB & 0x80FF) | high << 8;
+        flag = LOW;
+    } else {
+        LATD = (LATD & 0xFF9F) | 0x0020;
+        LATB = (LATB & 0x80FF) | low << 8;
+        flag = HIGH;
+    }
+}
+
+void _int_(4) isr_T1(void) {
+    AD1CON1bits.ASAM = 1;
+    IFS0bits.T1IF = 0;
+}
+
+void _int_(12) isr_T3(void) {
+    send2displays(voltage);
+    IFS0bits.T3IF = 0;
+}
+
+void _int_(27) isr_adc(void) {
+    int *p = (int *)(&ADC1BUF0);
+    int media = 0;
+    for (; p <= (int *)(&ADC1BUFF); p++)
+        media += *p;
+    media /= SAMPLES;
+    voltage = (media * 33 + 511) / 1023;
+    IFS1bits.AD1IF = 0;
+}
+
+int main() {
+    TRISB &= 0x80FF;
+    TRISD &= 0xFF9F;
+
+    TRISBbits.TRISB4 = 1;
+    AD1PCFGbits.PCFG4 = 0;
+    AD1CON1bits.SSRC = 7;
+    AD1CON1bits.CLRASAM = 1;
+    AD1CON3bits.SAMC = 16;
+    AD1CON2bits.SMPI = SAMPLES - 1;
+    AD1CHSbits.CH0SA = 4;
+    AD1CON1bits.ON = 1;
+
+    IPC6bits.AD1IP = 2;
+    IFS1bits.AD1IF = 0;
+    IEC1bits.AD1IE = 1;
+
+    // Configure Timer T1 with 5Hz frequency
+    T1CONbits.TCKPS = 2;
+    PR1 = 62499;
+    TMR1 = 0;
+    T1CONbits.TON = 1;
+
+    // Configure Timer T3 with 100Hz frequency
+    T3CONbits.TCKPS = 2;
+    PR3 = 49999;
+    TMR3 = 0;
+    T3CONbits.TON = 1;
+
+    IPC1bits.T1IP = 2;
+    IFS0bits.T1IF = 0;
+    IEC0bits.T1IE = 1;
+
+    IPC3bits.T3IP = 2;
+    IFS0bits.T3IF = 0;
+    IEC0bits.T3IE = 1;
+
+    EnableInterrupts();
+    while (1);
+
+    return 0;
+}

2ano/2semestre/ac2/aula09/part2-ex1.c

@@ -0,0 +1,21 @@
+#include <detpic32.h>
+
+int main() {
+    T3CONbits.TCKPS = 2;
+    PR3 = 49999;
+    TMR3 = 0;
+    T3CONbits.TON = 1;
+
+    // tON = 0.25 * (1 / 100) = 2.5ms
+    // fOutPreScaler = 20MHz / 4 = 5MHz
+    // tOutPreScaler = 1 / 5MHz = 200ns
+    // OC1RS = (2.5 * 10^-3) / (200 * 10^-9) = 12500
+    OC1CONbits.OCM = 6;
+    OC1CONbits.OCTSEL = 1;
+    OC1RS = 12500;
+    OC1CONbits.ON = 1;
+
+    while (1);
+
+    return 0;
+}

2ano/2semestre/ac2/aula09/part2-ex3.c

@@ -0,0 +1,27 @@
+#include <detpic32.h>
+
+void setPWM(unsigned int dutyCycle) {
+    if (dutyCycle < 0 || dutyCycle > 100)
+        return;
+    OC1RS = ((PR3 + 1) * dutyCycle) / 100;
+}
+
+int main() {
+    T3CONbits.TCKPS = 2;
+    PR3 = 49999;
+    TMR3 = 0;
+    T3CONbits.TON = 1;
+
+    // tON = 0.25 * (1 / 100) = 2.5ms
+    // fOutPreScaler = 20MHz / 4 = 5MHz
+    // tOutPreScaler = 1 / 5MHz = 200ns
+    // OC1RS = (2.5 * 10^-3) / (200 * 10^-9) = 12500
+    OC1CONbits.OCM = 6;
+    OC1CONbits.OCTSEL = 1;
+    OC1RS = 12500;
+    OC1CONbits.ON = 1;
+
+    while (1) setPWM(80);
+
+    return 0;
+}

2ano/2semestre/ac2/aula09/part2-ex5.c

@@ -0,0 +1,32 @@
+#include <detpic32.h>
+
+void setPWM(unsigned int dutyCycle) {
+    if (dutyCycle < 0 || dutyCycle > 100)
+        return;
+    OC1RS = ((PR3 + 1) * dutyCycle) / 100;
+}
+
+int main() {
+    T3CONbits.TCKPS = 2;
+    PR3 = 49999;
+    TMR3 = 0;
+    T3CONbits.TON = 1;
+
+    // tON = 0.25 * (1 / 100) = 2.5ms
+    // fOutPreScaler = 20MHz / 4 = 5MHz
+    // tOutPreScaler = 1 / 5MHz = 200ns
+    // OC1RS = (2.5 * 10^-3) / (200 * 10^-9) = 12500
+    OC1CONbits.OCM = 6;
+    OC1CONbits.OCTSEL = 1;
+    OC1RS = 12500;
+    OC1CONbits.ON = 1;
+
+    TRISC &= 0xBFFF;
+
+    while (1) {
+        setPWM(10);
+        LATC = (LATC & 0xBFFF) | (PORTD & 0x0001) << 14;
+    }
+
+    return 0;
+}

2ano/2semestre/ac2/pfull

@@ -1,19 +1,34 @@
 #!/bin/bash
 
+# Validate arguments
 if [ "$#" -ne 1 ]; then
     echo "Usage: $0 <source_file>"
     exit
 fi
+
+# Parse arguments
 file=${1##*/}
 dir=${1%/*}
 filename="${file%.*}"
+
+# Go to source directory
+if [ -d "$dir" ]; then
     cd "$dir" || exit
+fi
+
+# Compile and clean up
 pcompile "$file" || exit
 for f in *; do
     if [[ "$f" =~ ^.+\.(o|elf|map|sym)$ ]]; then
         rm "$f"
     fi
 done
+
+# Program and open terminal
 ldpic32 "$filename.hex" || exit
 pterm || exit
-cd "$OLDPWD" || exit
+
+# Go back to original directory
+if [ -d "$dir" ]; then
+    cd - || exit
+fi