[AC2] Aula09

- Missing addicionals
- Aula08 fix
- pfull fix

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

2ano/2semestre/ac2/aula08/part1-ex1.c

@@ -0,0 +1,16 @@
+#include <detpic32.h>
+
+int main() {
+    T3CONbits.TCKPS = 7;            // 1:256 prescaler
+    PR3 = 39062;                    // Fout = 20MHz / (256 * (39062 + 1)) = 2Hz
+    TMR3 = 0;                       // Reset timer T3 count register
+    T3CONbits.TON = 1;              // Enable timer T3 (must be the last command of the timer configuration sequence)
+
+    while (1) {
+        while (IFS0bits.T3IF == 0); // Wait while T3IF is 0
+        IFS0bits.T3IF = 0;          // Reset T3IF
+        putChar('.');
+    }
+
+    return 0;
+}

2ano/2semestre/ac2/aula08/part1-ex2.c

@@ -0,0 +1,22 @@
+#include <detpic32.h>
+
+void _int_(12) isr_T3(void) {
+    putChar('.');
+    IFS0bits.T3IF = 0;              // Reset timer T3 interrupt flag
+}
+
+int main() {
+    T3CONbits.TCKPS = 7;            // 1:256 prescaler
+    PR3 = 39062;                    // Fout = 20MHz / (256 * (39062 + 1)) = 2Hz
+    TMR3 = 0;                       // Reset timer T3 count register
+    T3CONbits.TON = 1;              // Enable timer T3 (must be the last command of the timer configuration sequence)
+
+    IPC3bits.T3IP = 2;              // Interrupt priority (must be in range [1..6])
+    IEC0bits.T3IE = 1;              // Enable timer T3 interrupts
+    IFS0bits.T3IF = 0;              // Reset timer T3 interrupt flag
+
+    EnableInterrupts();             // Global Interrupt Enable
+    while (1);
+
+    return 0;
+}

2ano/2semestre/ac2/aula08/part1-ex3.c

@@ -0,0 +1,24 @@
+#include <detpic32.h>
+
+void _int_(12) isr_T3(void) {
+    static int flag = 0;
+    if (flag == 0) putChar('.');
+    flag = !flag;
+    IFS0bits.T3IF = 0;              // Reset timer T3 interrupt flag
+}
+
+int main() {
+    T3CONbits.TCKPS = 7;            // 1:256 prescaler
+    PR3 = 39062;                    // Fout = 20MHz / (256 * (39062 + 1)) = 2Hz
+    TMR3 = 0;                       // Reset timer T3 count register
+    T3CONbits.TON = 1;              // Enable timer T3 (must be the last command of the timer configuration sequence)
+
+    IPC3bits.T3IP = 2;              // Interrupt priority (must be in range [1..6])
+    IEC0bits.T3IE = 1;              // Enable timer T3 interrupts
+    IFS0bits.T3IF = 0;              // Reset timer T3 interrupt flag
+
+    EnableInterrupts();             // Global Interrupt Enable
+    while (1);
+
+    return 0;
+}

2ano/2semestre/ac2/aula08/part1-ex4.c

@@ -0,0 +1,57 @@
+#include <detpic32.h>
+
+int counters[] = {0, 0};
+
+void print() {
+    putChar('\r');
+    printStr("T1: ");
+    printInt10(0[counters]);
+    printStr(" T3: ");
+    printInt10(1[counters]);
+}
+
+void _int_(4) isr_T1(void) {
+    counters[0]++;
+    LATD ^= 0x0001;
+    LATE ^= 0x0002;
+    print();
+    IFS0bits.T1IF = 0;              // Reset timer T1 interrupt flag
+}
+
+void _int_(12) isr_T3(void) {
+    counters[1]++;
+    LATD ^= 0x0004;
+    LATE ^= 0x0008;
+    print();
+    IFS0bits.T3IF = 0;              // Reset timer T3 interrupt flag
+}
+
+int main() {
+    T1CONbits.TCKPS = 2;
+    PR1 = 62499;
+    TMR1 = 0;
+    T1CONbits.TON = 1;
+
+    T3CONbits.TCKPS = 4;
+    PR3 = 49999;
+    TMR3 = 0;
+    T3CONbits.TON = 1;
+
+    IPC1bits.T1IP = 2;              // Interrupt priority (must be in range [1..6])
+    IEC0bits.T1IE = 1;              // Enable timer T1 interrupts
+    IFS0bits.T1IF = 0;              // Reset timer T1 interrupt flag
+
+    IPC3bits.T3IP = 2;              // Interrupt priority (must be in range [1..6])
+    IEC0bits.T3IE = 1;              // Enable timer T3 interrupts
+    IFS0bits.T3IF = 0;              // Reset timer T3 interrupt flag
+
+    TRISD &= 0xFFFA;
+    LATD &= 0xFFFA;
+    TRISE &= 0xFFF5;
+    LATE &= 0xFFF5;
+
+    EnableInterrupts();             // Global Interrupt Enable
+    while (1);
+
+    return 0;
+}

2ano/2semestre/ac2/aula08/part1-ex4.txt

@@ -0,0 +1,17 @@
+Timer 1
+
+K > 20000000 / (65536 * 5)
+K > 61.035
+K = 64
+
+PR1 = ((20000000 / 64) / 5) - 1 = 62499
+
+------------------------------------------------
+
+Timer 3
+
+K > 20000000 / (65536 * 25)
+K > 12.207
+K > 16
+
+PR3 = ((20000000 / 16) / 25) - 1 = 49999

2ano/2semestre/ac2/aula08/part2-ex1.c

@@ -0,0 +1,21 @@
+#include <detpic32.h>
+
+void delay(unsigned int ms) {
+    resetCoreTimer();
+    while (readCoreTimer() < 20000 * ms);
+}
+
+int main() {
+    TRISD |= 0x0100;
+    TRISE &= 0xFFFE;
+    LATE &= 0xFFFE;
+
+    while (1) {
+        while (((PORTD >> 8) & 0x0001) == 1);
+        LATE ^= 0x0001;
+        delay(3000);
+        LATE ^= 0x0001;
+    }
+
+    return 0;
+}

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

@@ -0,0 +1,42 @@
+#include <detpic32.h>
+
+void _int_(8) isr_T2() {
+    static int c = 0;
+    if (++c == 6) {
+        T2CONbits.TON = 0;
+        LATE &= 0xFFFE;
+        c = 0;
+    }
+    IFS0bits.T2IF = 0;
+}
+
+void _int_(7) isr_INT1() {
+    LATE |= 0x0001;
+    TMR2 = 0;
+    T2CONbits.TON = 1;
+    IFS0bits.INT1IF = 0;
+}
+
+int main() {
+    TRISD |= 0x0100;
+    TRISE &= 0xFFFE;
+    LATE &= 0xFFFE;
+
+    IPC1bits.INT1IP = 2;
+    IEC0bits.INT1IE = 1;
+    IFS0bits.INT1IF = 0;
+    INTCONbits.INT1EP = 0;
+
+    IPC2bits.T2IP = 2;
+    IFS0bits.T2IF = 0;
+
+    T2CONbits.TCKPS = 7;
+    PR2 = 39062;
+    IEC0bits.T2IE = 1;
+
+    EnableInterrupts();
+
+    while (1);
+
+    return 0;
+}

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

@@ -0,0 +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
+
+# Go back to original directory
+if [ -d "$dir" ]; then
+    cd - || exit
+fi