Library for using Freetronics dot matrix displays

gen/genflip.c

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2012 Southern Storm Software, Pty Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+    int value;
+    printf("static const uint8_t flipBits[256] PROGMEM = {\n");
+    for (value = 0; value < 256; ++value) {
+        int flipped =
+            ((value & 0x01) << 7) | ((value & 0x02) << 5) |
+            ((value & 0x04) << 3) | ((value & 0x08) << 1) |
+            ((value & 0x10) >> 1) | ((value & 0x20) >> 3) |
+            ((value & 0x40) >> 5) | ((value & 0x80) >> 7);
+        if ((value % 12) == 0)
+            printf("    ");
+        else
+            printf(" ");
+        if (value != 255)
+            printf("0x%02X,", flipped);
+        else
+            printf("0x%02X", flipped);
+        if ((value % 12) == 11)
+            printf("\n");
+    }
+    printf("\n};\n");
+    return 0;
+}