diff --git a/README.astyle b/README.astyle
new file mode 100644
index 0000000000..7e7e9d3dfa
--- /dev/null
+++ b/README.astyle
@@ -0,0 +1,18 @@
+Use the _astylerc config file and the 'astyle' util to format the
+project source files in  accordance with the project coding style.
+
+At project top level run these commands:
+
+1. To format the .c files:
+    $ find . -type f -name "*.c" | xargs astyle --options=_astylerc-c
+ -OR-   (to skip creation of backup files)
+    $ find . -type f -name "*.c" | xargs astyle --options=_astylerc-c -n
+
+2. To format the .h files:
+    $ find . -type f -name "*.h" | xargs astyle --options=_astylerc-h
+ -OR-   (to skip creation of backup files)
+    $ find . -type f -name "*.h" | xargs astyle --options=_astylerc-h -n
+
+3. To remove the backup file created by astyle:
+    $ find . -type f -name "*.bak"  -delete     # this are *.c backup files
+    $ find . -type f -name "*.orig" -delete     # this are *.h backup files
diff --git a/_astylerc-c b/_astylerc-c
new file mode 100644
index 0000000000..9b9d7f3c95
--- /dev/null
+++ b/_astylerc-c
@@ -0,0 +1 @@
+--style=kr --convert-tabs --indent=spaces=4 --indent-switches   --pad-oper --unpad-paren  --align-pointer=middle --suffix=.bak --lineend=linux --min-conditional-indent=
diff --git a/_astylerc-h b/_astylerc-h
new file mode 100644
index 0000000000..d9c76337ce
--- /dev/null
+++ b/_astylerc-h
@@ -0,0 +1 @@
+--convert-tabs --indent=spaces=4
diff --git a/lv_misc/lv_font.h b/lv_misc/lv_font.h
index aa1b4a5fba..8941146152 100644
--- a/lv_misc/lv_font.h
+++ b/lv_misc/lv_font.h
@@ -49,8 +49,8 @@ typedef struct _lv_font_struct
     const uint8_t * glyph_bitmap;
     const lv_font_glyph_dsc_t * glyph_dsc;
     const uint32_t * unicode_list;
-    const uint8_t * (*get_bitmap)(const struct _lv_font_struct * ,uint32_t);    /*Get a glyph's  bitmap from a font*/
-    int16_t (*get_width)(const struct _lv_font_struct * ,uint32_t);       /*Get a glyph's with with a given font*/
+    const uint8_t * (*get_bitmap)(const struct _lv_font_struct *,uint32_t);     /*Get a glyph's  bitmap from a font*/
+    int16_t (*get_width)(const struct _lv_font_struct *,uint32_t);        /*Get a glyph's with with a given font*/
     struct _lv_font_struct * next_page;    /*Pointer to a font extension*/
     uint32_t bpp   :4;                     /*Bit per pixel: 1, 2 or 4*/
 } lv_font_t;
diff --git a/lv_misc/lv_trigo.c b/lv_misc/lv_trigo.c
new file mode 100644
index 0000000000..334b3204f8
--- /dev/null
+++ b/lv_misc/lv_trigo.c
@@ -0,0 +1,79 @@
+
+/**
+ * @file lv_trigo.c
+ * Basic trigonometric integer functions
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_trigo.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+static int16_t sin0_90_table[] = {
+    0,     572,    1144,   1715,   2286,   2856,   3425,   3993,   4560,   5126,
+    5690,  6252,   6813,   7371,   7927,   8481,   9032,   9580,   10126,  10668,
+    11207, 11743,  12275,  12803,  13328,  13848,  14364,  14876,  15383,  15886,
+    16383, 16876,  17364,  17846,  18323,  18794,  19260,  19720,  20173,  20621,
+    21062, 21497,  21925,  22347,  22762,  23170,  23571,  23964,  24351,  24730,
+    25101, 25465,  25821,  26169,  26509,  26841,  27165,  27481,  27788,  28087,
+    28377, 28659,  28932,  29196,  29451,  29697,  29934,  30162,  30381,  30591,
+    30791, 30982,  31163,  31335,  31498,  31650,  31794,  31927,  32051,  32165,
+    32269, 32364,  32448,  32523,  32587,  32642,  32687,  32722,  32747,  32762
+};
+
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Return with sinus of an angle
+ * @param angle
+ * @return sinus of 'angle'. sin(-90) = -32767, sin(90) = 32767
+ */
+int16_t lv_trigo_sin(int16_t angle)
+{
+    int16_t ret = 0;
+    angle = angle % 360;
+
+    if(angle < 0) angle = 360 + angle;
+
+    if(angle < 90) {
+        ret = sin0_90_table[angle];
+    } else if(angle >= 90 && angle < 180) {
+        angle = 179 - angle;
+        ret = sin0_90_table[angle];
+    } else if(angle >= 180 && angle < 270) {
+        angle = angle - 180;
+        ret = - sin0_90_table[angle];
+    } else { /*angle >=270*/
+        angle = 359 - angle;
+        ret = - sin0_90_table[angle];
+    }
+
+    return ret;
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
diff --git a/lv_misc/lv_txt.h b/lv_misc/lv_txt.h
index b34700e33a..ba1f8f8260 100644
--- a/lv_misc/lv_txt.h
+++ b/lv_misc/lv_txt.h
@@ -83,6 +83,7 @@ uint16_t lv_txt_get_next_line(const char * txt, const lv_font_t * font_p,
 lv_coord_t lv_txt_get_width(const char * txt, uint16_t length,
                             const lv_font_t * font, lv_coord_t letter_space, lv_txt_flag_t flag);
 
+
 /**
  * Check next character in a string and decide if te character is part of the command or not
  * @param state pointer to a txt_cmd_state_t variable which stores the current state of command processing