init

.gitignore

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+/.idea

ArdUtils.cpp

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+//
+// Created by robin on 1/8/16.
+//
+
+#ifdef ARD_UTILS_DELAYMS
+void ArdUtils::delayMs(unsigned ms)
+{
+    for (unsigned i = 0; i < ms; i++) {
+        delayMicroseconds(1000);
+    }
+}
+#endif
+
+
+#ifdef ARD_UTILS_UTF8
+byte ArdUtils::_utf8ToAscii(byte ascii, byte& c1)
+{
+    if ( ascii<128 )   // Standard ASCII-set 0..0x7F handling
+    {   c1=0;
+        return( ascii );
+    }
+
+    // get previous input
+    byte last = c1;   // get last char
+    c1=ascii;         // remember actual character
+
+    switch (last)     // conversion depnding on first UTF8-character
+    {   case 0xC2: return  (ascii);  break;
+        case 0xC3: return  (ascii | 0xC0);  break;
+        case 0x82: if(ascii==0xAC) return(0x80);       // special case Euro-symbol
+    }
+
+    return  (0);                                     // otherwise: return zero, if character has to be ignored
+}
+
+void ArdUtils::utf8ToAscii(char* s)
+{
+    byte c1 = 0;
+    int k=0;
+    byte c;
+    unsigned len = strlen(s);
+    for (unsigned i=0; i<len; i++)
+    {
+        c = ArdUtils::_utf8ToAscii(s[i], c1);
+        if (c!=0)
+            s[k++]=c;
+    }
+    s[k]=0;
+}
+#endif

ArdUtils.h

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+//
+// Created by robin on 1/8/16.
+//
+
+/*
+#define ARD_UTILS_DELAYMS
+#define ARD_UTILS_UTF8
+*/
+
+#ifndef ARDUTILS_ARDUTILS_H
+#define ARDUTILS_ARDUTILS_H
+
+#include "Arduino.h"
+
+class ArdUtils
+{
+public:
+#ifdef ARD_UTILS_DELAYMS
+    static void delayMs(unsigned ms);
+#endif
+#ifdef ARD_UTILS_UTF8
+    static void utf8ToAscii(char* s);
+#endif
+
+private:
+#ifdef ARD_UTILS_UTF8
+    static byte _utf8ToAscii(byte ascii, byte& c1);
+#endif
+};
+
+#include "ArdUtils.cpp"
+#endif //ARDUTILS_ARDUTILS_H