From 4e2a90e52fad71e30d727616ac25e81d4982190c Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <wolfgang.hottgenroth@icloud.com>
Date: Mon, 4 Feb 2019 22:42:30 +0100
Subject: [PATCH] red/blue switch

---
 pattern.c | 80 +++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 60 insertions(+), 20 deletions(-)

diff --git a/pattern.c b/pattern.c
index 8654b4e..1a8d963 100644
--- a/pattern.c
+++ b/pattern.c
@@ -2,11 +2,14 @@
 #include "led.h"
 #include "PontCoopScheduler.h"
 #include <stdlib.h>
+#include <stdbool.h>
 #include "myrand.h"
 
 
 uint8_t temperature = 20;
+const uint8_t TEMPERATURE_THRESHOLD = 20;
 
+tColor lockedColor = OFF;
 
 void patternSetTemperature(uint8_t t) {
     temperature = t;
@@ -78,67 +81,104 @@ void patternExec() {
 }
 */
 
+
+static bool _patternChangeColor() {
+    tColor newColor = OFF;
+    bool changed = false;
+    
+    if (temperature > TEMPERATURE_THRESHOLD) {
+        newColor = RED;
+    } else {
+        newColor = BLUE;
+    }
+
+    if ((newColor != lockedColor) || (lockedColor == OFF)) {
+        lockedColor = newColor;
+        changed = true;
+    }
+
+    return changed;
+}
+
+uint8_t _patternStayCnt() {
+    return temperature;
+}
+
 void patternExec() {
     static uint8_t state = 0;
     static uint8_t column = 0;
     static uint8_t stay = 0;
+    static uint8_t stayCnt = 0;
+    static uint8_t baseRow = 0;
 
     switch (state) {
         case 0:
             // initialize
-            ledSetMatrix(0, 3, RED);
-            ledSetMatrix(1, 3, RED);
-            ledSetMatrix(2, 3, RED);
-            ledSetMatrix(3, 3, RED);
+            for (uint8_t c = 0; c <= 3; c++) {
+                for (uint8_t r = 0; r <= 3; r++) {
+                    ledSetMatrix(c, r, OFF);
+                }
+            }
+
+            _patternChangeColor();
+            stay = _patternStayCnt();
+
+            baseRow = (lockedColor == RED) ? 3 : 0;
+
+            ledSetMatrix(0, baseRow, lockedColor);
+            ledSetMatrix(1, baseRow, lockedColor);
+            ledSetMatrix(2, baseRow, lockedColor);
+            ledSetMatrix(3, baseRow, lockedColor);
             srand(13);
             state = 1;
             break;
         case 1: 
             // select new column, row 2
             column = myrand() & 0x3;
-            ledSetMatrix(column, 2, RED);
-            stay = myrand() & 0xf;
+            ledSetMatrix(column, (lockedColor == RED) ? 2 : 1, lockedColor);
+            stayCnt = 0;
             state = 2;
             break;
         case 2:
             // stay
-            if (stay == 0) {
+            if (stayCnt >= stay) {
                 state = 3;
             }
-            stay--;
+            stayCnt++;
             break;
         case 3:
             // same column, row 1
-            ledSetMatrix(column, 1, RED);
-            ledSetMatrix(column, 2, OFF);
-            stay = myrand() & 0xf;
+            ledSetMatrix(column, (lockedColor == RED) ? 1 : 2, lockedColor);
+            ledSetMatrix(column, (lockedColor == RED) ? 2 : 1, OFF);
+            stayCnt = 0;
             state = 4;
             break;
         case 4:
             // stay
-            if (stay == 0) {
+            if (stayCnt >= stay) {
                 state = 5;
             }
-            stay--;
+            stayCnt++;
             break;
         case 5:
             // same column, row 0
-            ledSetMatrix(column, 0, RED);
-            ledSetMatrix(column, 1, OFF);
-            stay = myrand() & 0xf;
+            ledSetMatrix(column, (lockedColor == RED) ? 0 : 3, lockedColor);
+            ledSetMatrix(column, (lockedColor == RED) ? 1 : 2, OFF);
+            stayCnt = 0;
             state = 6;
             break;
         case 6:
             // stay
-            if (stay == 0) {
+            if (stayCnt >= stay) {
                 state = 7;
             }
-            stay--;
+            stayCnt++;
             break;
         case 7:
             // same column, row 0 off
-            ledSetMatrix(column, 0, OFF);
-            state = 1;
+            ledSetMatrix(column, (lockedColor == RED) ? 0 : 3, OFF);
+            state = _patternChangeColor() ? 1 : 0;
+            stay = _patternStayCnt();
             break;
         default:
             state = 0;