From c65d9c94de0d1a6e6bb1817bbef05cad705fe921 Mon Sep 17 00:00:00 2001
From: paulmart-n <hi@paulmartin.cloud>
Date: Mon, 13 May 2024 23:13:28 +0200
Subject: [PATCH] Pin-Timer

---
 .../fabrik/simulator/pic16f84/IOPorts.java    |  2 ++
 .../java/fabrik/simulator/pic16f84/Timer.java | 25 +++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/src/main/java/fabrik/simulator/pic16f84/IOPorts.java b/src/main/java/fabrik/simulator/pic16f84/IOPorts.java
index 388ba16..9ccb944 100644
--- a/src/main/java/fabrik/simulator/pic16f84/IOPorts.java
+++ b/src/main/java/fabrik/simulator/pic16f84/IOPorts.java
@@ -57,6 +57,8 @@ public class IOPorts {
         DataRegister.setDirectRegister(PORTB, ((~((~dataLatch[B])&0xFF | trisLatch[B])) | (trisLatch[B] & DataRegister.getDirectRegister(PORTB))) & 0xFF);
         DataRegister.setDirectRegister(TRISA, trisLatch[A]);
         DataRegister.setDirectRegister(TRISB, trisLatch[B]);
+        if (((trisLatch[A] >> 4) & 1 )== 1)
+            Timer.incrementFromPin(DataRegister.getDirectRegister(PORTA));
         ToggleButtonGroup[] buttons = Controller_Frontend.getPORTbuttons();
         for (int i = 0; i < buttons.length; i++){
             int port = (i < 8) ? PORTA : PORTB;
diff --git a/src/main/java/fabrik/simulator/pic16f84/Timer.java b/src/main/java/fabrik/simulator/pic16f84/Timer.java
index cf29aab..dfa6eae 100644
--- a/src/main/java/fabrik/simulator/pic16f84/Timer.java
+++ b/src/main/java/fabrik/simulator/pic16f84/Timer.java
@@ -1,5 +1,7 @@
 package fabrik.simulator.pic16f84;
 
+import javafx.stage.Stage;
+
 public class Timer {
     private static final int TIMERREG = 0x1;
     private static final int T0IF = 0x2;
@@ -8,6 +10,8 @@ public class Timer {
     private static final int INTCON = 0x0B;
     private static final int OPTION = 0x81;
 
+    private static int oldpin = 0;
+
 
     public static void cycles(int cycles){
         if (DataRegister.getDirectBit(OPTION, T0CS) == 0){
@@ -27,6 +31,27 @@ public class Timer {
         }
     }
 
+    public static void incrementFromPin (int register){
+        if (DataRegister.getDirectBit(OPTION, T0CS) == 1){
+            int newpin = (register >> 4) & 1;
+            if (newpin != oldpin) {
+                System.out.println(newpin + " " + oldpin);
+                if (DataRegister.getDirectBit(OPTION, T0SE) == 0) {
+                    // Low to high
+                    if (newpin == 1 && oldpin == 0) {
+                        increment();
+                    }
+                } else {
+                    // High to low
+                    if (newpin == 0 && oldpin == 1) {
+                        increment();
+                    }
+                }
+                oldpin = newpin;
+            }
+        }
+    }
+
     private static void increment() {
         int timer = DataRegister.getDirectRegister(TIMERREG);
         timer++;