add measurement, stolen from tea thermometer

pattern.c

@@ -4,6 +4,14 @@
 #include <stdlib.h>
 #include "myrand.h"
 
+
+uint8_t temperature = 20;
+
+
+void patternSetTemperature(uint8_t t) {
+    temperature = t;
+}
+
 /*
  * traversing the whole matrix
 void patternExec() {