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Added fontrendering

pull/3/head
Sebastian 6 years ago
parent
0da083fb1a
commit
f1f9b255f5
7 changed files with 609 additions and 4 deletions
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  1. 1
      .clang_complete
  2. 5
      Makefile
  3. 8
      README.md
  4. 476
      fonts/tom_thumb.h
  5. 25
      include/st7735_font.h
  6. 13
      main.c
  7. 85
      st7735_font.c

1
.clang_complete
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@ -1,5 +1,6 @@
-Iinclude
-Iimages
-Ifonts
-I/usr/avr/include
-D__AVR_ATmega8__
-DF_CPU=16000000

5
Makefile
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@ -6,7 +6,8 @@ VERSION = 0.1
HEADERS = include/spi.h include/st7735.h include/st7735initcmds.h
HEADERS += images/logo_bw.h images/logo.h include/st7735_gfx.h
SRC = main.c spi.c st7735.c st7735_gfx.c
HEADERS += include/st7735_font.h fonts/tom_thumb.h
SRC = main.c spi.c st7735.c st7735_gfx.c st7735_font.c
TARGET = st7735_test
OBJDIR = bin
@ -18,7 +19,7 @@ SIZE = avr-size
SRC_TMP = $(subst ../,,$(SRC))
OBJ = $(SRC_TMP:%.c=$(OBJDIR)/$(AVRMCU)/%.o)
CFLAGS = -I include -I images -Os -Wall -Wstrict-prototypes
CFLAGS = -I include -I images -I fonts -Os -Wall -Wstrict-prototypes
CFLAGS += -ffunction-sections -fdata-sections
CFLAGS += -fshort-enums -fpack-struct -funsigned-char -funsigned-bitfields
CFLAGS += -mmcu=$(AVRMCU) -DF_CPU=$(F_CPU)UL -DVERSION=$(VERSION)

8
README.md
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@ -7,3 +7,11 @@ My simplified plain C version of https://github.com/adafruit/Adafruit-ST7735-Lib
and parts of https://github.com/adafruit/Adafruit-GFX-Library/
*Use at your own risk!*
Tweaks
------
* Uses my own bitmap format for fullcolor and monochrome bitmaps
* Faster line drawing based on: https://github.com/adafruit/Adafruit-GFX-Library/pull/36
* Faster font rendering based on https://github.com/adafruit/Adafruit-GFX-Library/issues/69
* Refactored draw_char function that does not load glyph struct twice

476
fonts/tom_thumb.h
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@ -0,0 +1,476 @@
/**
** The original 3x5 font is licensed under the 3-clause BSD license:
**
** Copyright 1999 Brian J. Swetland
** Copyright 1999 Vassilii Khachaturov
** Portions (of vt100.c/vt100.h) copyright Dan Marks
**
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions, and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions, and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the authors may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
** Modifications to Tom Thumb for improved readability are from Robey Pointer,
** see:
** http://robey.lag.net/2010/01/23/tiny-monospace-font.html
**
** The original author does not have any objection to relicensing of Robey
** Pointer's modifications (in this file) in a more permissive license. See
** the discussion at the above blog, and also here:
** http://opengameart.org/forumtopic/how-to-submit-art-using-the-3-clause-bsd-license
**
** Feb 21, 2016: Conversion from Linux BDF --> Adafruit GFX font,
** with the help of this Python script:
** https://gist.github.com/skelliam/322d421f028545f16f6d
** William Skellenger (williamj@skellenger.net)
** Twitter: @skelliam
**
*/
#include "st7735_font.h"
#define TOMTHUMB_USE_EXTENDED 0
const uint8_t TomThumbBitmaps[] PROGMEM = {
0x00, /* 0x20 space */
0x80, 0x80, 0x80, 0x00, 0x80, /* 0x21 exclam */
0xA0, 0xA0, /* 0x22 quotedbl */
0xA0, 0xE0, 0xA0, 0xE0, 0xA0, /* 0x23 numbersign */
0x60, 0xC0, 0x60, 0xC0, 0x40, /* 0x24 dollar */
0x80, 0x20, 0x40, 0x80, 0x20, /* 0x25 percent */
0xC0, 0xC0, 0xE0, 0xA0, 0x60, /* 0x26 ampersand */
0x80, 0x80, /* 0x27 quotesingle */
0x40, 0x80, 0x80, 0x80, 0x40, /* 0x28 parenleft */
0x80, 0x40, 0x40, 0x40, 0x80, /* 0x29 parenright */
0xA0, 0x40, 0xA0, /* 0x2A asterisk */
0x40, 0xE0, 0x40, /* 0x2B plus */
0x40, 0x80, /* 0x2C comma */
0xE0, /* 0x2D hyphen */
0x80, /* 0x2E period */
0x20, 0x20, 0x40, 0x80, 0x80, /* 0x2F slash */
0x60, 0xA0, 0xA0, 0xA0, 0xC0, /* 0x30 zero */
0x40, 0xC0, 0x40, 0x40, 0x40, /* 0x31 one */
0xC0, 0x20, 0x40, 0x80, 0xE0, /* 0x32 two */
0xC0, 0x20, 0x40, 0x20, 0xC0, /* 0x33 three */
0xA0, 0xA0, 0xE0, 0x20, 0x20, /* 0x34 four */
0xE0, 0x80, 0xC0, 0x20, 0xC0, /* 0x35 five */
0x60, 0x80, 0xE0, 0xA0, 0xE0, /* 0x36 six */
0xE0, 0x20, 0x40, 0x80, 0x80, /* 0x37 seven */
0xE0, 0xA0, 0xE0, 0xA0, 0xE0, /* 0x38 eight */
0xE0, 0xA0, 0xE0, 0x20, 0xC0, /* 0x39 nine */
0x80, 0x00, 0x80, /* 0x3A colon */
0x40, 0x00, 0x40, 0x80, /* 0x3B semicolon */
0x20, 0x40, 0x80, 0x40, 0x20, /* 0x3C less */
0xE0, 0x00, 0xE0, /* 0x3D equal */
0x80, 0x40, 0x20, 0x40, 0x80, /* 0x3E greater */
0xE0, 0x20, 0x40, 0x00, 0x40, /* 0x3F question */
0x40, 0xA0, 0xE0, 0x80, 0x60, /* 0x40 at */
0x40, 0xA0, 0xE0, 0xA0, 0xA0, /* 0x41 A */
0xC0, 0xA0, 0xC0, 0xA0, 0xC0, /* 0x42 B */
0x60, 0x80, 0x80, 0x80, 0x60, /* 0x43 C */
0xC0, 0xA0, 0xA0, 0xA0, 0xC0, /* 0x44 D */
0xE0, 0x80, 0xE0, 0x80, 0xE0, /* 0x45 E */
0xE0, 0x80, 0xE0, 0x80, 0x80, /* 0x46 F */
0x60, 0x80, 0xE0, 0xA0, 0x60, /* 0x47 G */
0xA0, 0xA0, 0xE0, 0xA0, 0xA0, /* 0x48 H */
0xE0, 0x40, 0x40, 0x40, 0xE0, /* 0x49 I */
0x20, 0x20, 0x20, 0xA0, 0x40, /* 0x4A J */
0xA0, 0xA0, 0xC0, 0xA0, 0xA0, /* 0x4B K */
0x80, 0x80, 0x80, 0x80, 0xE0, /* 0x4C L */
0xA0, 0xE0, 0xE0, 0xA0, 0xA0, /* 0x4D M */
0xA0, 0xE0, 0xE0, 0xE0, 0xA0, /* 0x4E N */
0x40, 0xA0, 0xA0, 0xA0, 0x40, /* 0x4F O */
0xC0, 0xA0, 0xC0, 0x80, 0x80, /* 0x50 P */
0x40, 0xA0, 0xA0, 0xE0, 0x60, /* 0x51 Q */
0xC0, 0xA0, 0xE0, 0xC0, 0xA0, /* 0x52 R */
0x60, 0x80, 0x40, 0x20, 0xC0, /* 0x53 S */
0xE0, 0x40, 0x40, 0x40, 0x40, /* 0x54 T */
0xA0, 0xA0, 0xA0, 0xA0, 0x60, /* 0x55 U */
0xA0, 0xA0, 0xA0, 0x40, 0x40, /* 0x56 V */
0xA0, 0xA0, 0xE0, 0xE0, 0xA0, /* 0x57 W */
0xA0, 0xA0, 0x40, 0xA0, 0xA0, /* 0x58 X */
0xA0, 0xA0, 0x40, 0x40, 0x40, /* 0x59 Y */
0xE0, 0x20, 0x40, 0x80, 0xE0, /* 0x5A Z */
0xE0, 0x80, 0x80, 0x80, 0xE0, /* 0x5B bracketleft */
0x80, 0x40, 0x20, /* 0x5C backslash */
0xE0, 0x20, 0x20, 0x20, 0xE0, /* 0x5D bracketright */
0x40, 0xA0, /* 0x5E asciicircum */
0xE0, /* 0x5F underscore */
0x80, 0x40, /* 0x60 grave */
0xC0, 0x60, 0xA0, 0xE0, /* 0x61 a */
0x80, 0xC0, 0xA0, 0xA0, 0xC0, /* 0x62 b */
0x60, 0x80, 0x80, 0x60, /* 0x63 c */
0x20, 0x60, 0xA0, 0xA0, 0x60, /* 0x64 d */
0x60, 0xA0, 0xC0, 0x60, /* 0x65 e */
0x20, 0x40, 0xE0, 0x40, 0x40, /* 0x66 f */
0x60, 0xA0, 0xE0, 0x20, 0x40, /* 0x67 g */
0x80, 0xC0, 0xA0, 0xA0, 0xA0, /* 0x68 h */
0x80, 0x00, 0x80, 0x80, 0x80, /* 0x69 i */
0x20, 0x00, 0x20, 0x20, 0xA0, 0x40, /* 0x6A j */
0x80, 0xA0, 0xC0, 0xC0, 0xA0, /* 0x6B k */
0xC0, 0x40, 0x40, 0x40, 0xE0, /* 0x6C l */
0xE0, 0xE0, 0xE0, 0xA0, /* 0x6D m */
0xC0, 0xA0, 0xA0, 0xA0, /* 0x6E n */
0x40, 0xA0, 0xA0, 0x40, /* 0x6F o */
0xC0, 0xA0, 0xA0, 0xC0, 0x80, /* 0x70 p */
0x60, 0xA0, 0xA0, 0x60, 0x20, /* 0x71 q */
0x60, 0x80, 0x80, 0x80, /* 0x72 r */
0x60, 0xC0, 0x60, 0xC0, /* 0x73 s */
0x40, 0xE0, 0x40, 0x40, 0x60, /* 0x74 t */
0xA0, 0xA0, 0xA0, 0x60, /* 0x75 u */
0xA0, 0xA0, 0xE0, 0x40, /* 0x76 v */
0xA0, 0xE0, 0xE0, 0xE0, /* 0x77 w */
0xA0, 0x40, 0x40, 0xA0, /* 0x78 x */
0xA0, 0xA0, 0x60, 0x20, 0x40, /* 0x79 y */
0xE0, 0x60, 0xC0, 0xE0, /* 0x7A z */
0x60, 0x40, 0x80, 0x40, 0x60, /* 0x7B braceleft */
0x80, 0x80, 0x00, 0x80, 0x80, /* 0x7C bar */
0xC0, 0x40, 0x20, 0x40, 0xC0, /* 0x7D braceright */
0x60, 0xC0, /* 0x7E asciitilde */
#if (TOMTHUMB_USE_EXTENDED)
0x80, 0x00, 0x80, 0x80, 0x80, /* 0xA1 exclamdown */
0x40, 0xE0, 0x80, 0xE0, 0x40, /* 0xA2 cent */
0x60, 0x40, 0xE0, 0x40, 0xE0, /* 0xA3 sterling */
0xA0, 0x40, 0xE0, 0x40, 0xA0, /* 0xA4 currency */
0xA0, 0xA0, 0x40, 0xE0, 0x40, /* 0xA5 yen */
0x80, 0x80, 0x00, 0x80, 0x80, /* 0xA6 brokenbar */
0x60, 0x40, 0xA0, 0x40, 0xC0, /* 0xA7 section */
0xA0, /* 0xA8 dieresis */
0x60, 0x80, 0x60, /* 0xA9 copyright */
0x60, 0xA0, 0xE0, 0x00, 0xE0, /* 0xAA ordfeminine */
0x40, 0x80, 0x40, /* 0xAB guillemotleft */
0xE0, 0x20, /* 0xAC logicalnot */
0xC0, /* 0xAD softhyphen */
0xC0, 0xC0, 0xA0, /* 0xAE registered */
0xE0, /* 0xAF macron */
0x40, 0xA0, 0x40, /* 0xB0 degree */
0x40, 0xE0, 0x40, 0x00, 0xE0, /* 0xB1 plusminus */
0xC0, 0x40, 0x60, /* 0xB2 twosuperior */
0xE0, 0x60, 0xE0, /* 0xB3 threesuperior */
0x40, 0x80, /* 0xB4 acute */
0xA0, 0xA0, 0xA0, 0xC0, 0x80, /* 0xB5 mu */
0x60, 0xA0, 0x60, 0x60, 0x60, /* 0xB6 paragraph */
0xE0, 0xE0, 0xE0, /* 0xB7 periodcentered */
0x40, 0x20, 0xC0, /* 0xB8 cedilla */
0x80, 0x80, 0x80, /* 0xB9 onesuperior */
0x40, 0xA0, 0x40, 0x00, 0xE0, /* 0xBA ordmasculine */
0x80, 0x40, 0x80, /* 0xBB guillemotright */
0x80, 0x80, 0x00, 0x60, 0x20, /* 0xBC onequarter */
0x80, 0x80, 0x00, 0xC0, 0x60, /* 0xBD onehalf */
0xC0, 0xC0, 0x00, 0x60, 0x20, /* 0xBE threequarters */
0x40, 0x00, 0x40, 0x80, 0xE0, /* 0xBF questiondown */
0x40, 0x20, 0x40, 0xE0, 0xA0, /* 0xC0 Agrave */
0x40, 0x80, 0x40, 0xE0, 0xA0, /* 0xC1 Aacute */
0xE0, 0x00, 0x40, 0xE0, 0xA0, /* 0xC2 Acircumflex */
0x60, 0xC0, 0x40, 0xE0, 0xA0, /* 0xC3 Atilde */
0xA0, 0x40, 0xA0, 0xE0, 0xA0, /* 0xC4 Adieresis */
0xC0, 0xC0, 0xA0, 0xE0, 0xA0, /* 0xC5 Aring */
0x60, 0xC0, 0xE0, 0xC0, 0xE0, /* 0xC6 AE */
0x60, 0x80, 0x80, 0x60, 0x20, 0x40, /* 0xC7 Ccedilla */
0x40, 0x20, 0xE0, 0xC0, 0xE0, /* 0xC8 Egrave */
0x40, 0x80, 0xE0, 0xC0, 0xE0, /* 0xC9 Eacute */
0xE0, 0x00, 0xE0, 0xC0, 0xE0, /* 0xCA Ecircumflex */
0xA0, 0x00, 0xE0, 0xC0, 0xE0, /* 0xCB Edieresis */
0x40, 0x20, 0xE0, 0x40, 0xE0, /* 0xCC Igrave */
0x40, 0x80, 0xE0, 0x40, 0xE0, /* 0xCD Iacute */
0xE0, 0x00, 0xE0, 0x40, 0xE0, /* 0xCE Icircumflex */
0xA0, 0x00, 0xE0, 0x40, 0xE0, /* 0xCF Idieresis */
0xC0, 0xA0, 0xE0, 0xA0, 0xC0, /* 0xD0 Eth */
0xC0, 0x60, 0xA0, 0xE0, 0xA0, /* 0xD1 Ntilde */
0x40, 0x20, 0xE0, 0xA0, 0xE0, /* 0xD2 Ograve */
0x40, 0x80, 0xE0, 0xA0, 0xE0, /* 0xD3 Oacute */
0xE0, 0x00, 0xE0, 0xA0, 0xE0, /* 0xD4 Ocircumflex */
0xC0, 0x60, 0xE0, 0xA0, 0xE0, /* 0xD5 Otilde */
0xA0, 0x00, 0xE0, 0xA0, 0xE0, /* 0xD6 Odieresis */
0xA0, 0x40, 0xA0, /* 0xD7 multiply */
0x60, 0xA0, 0xE0, 0xA0, 0xC0, /* 0xD8 Oslash */
0x80, 0x40, 0xA0, 0xA0, 0xE0, /* 0xD9 Ugrave */
0x20, 0x40, 0xA0, 0xA0, 0xE0, /* 0xDA Uacute */
0xE0, 0x00, 0xA0, 0xA0, 0xE0, /* 0xDB Ucircumflex */
0xA0, 0x00, 0xA0, 0xA0, 0xE0, /* 0xDC Udieresis */
0x20, 0x40, 0xA0, 0xE0, 0x40, /* 0xDD Yacute */
0x80, 0xE0, 0xA0, 0xE0, 0x80, /* 0xDE Thorn */
0x60, 0xA0, 0xC0, 0xA0, 0xC0, 0x80, /* 0xDF germandbls */
0x40, 0x20, 0x60, 0xA0, 0xE0, /* 0xE0 agrave */
0x40, 0x80, 0x60, 0xA0, 0xE0, /* 0xE1 aacute */
0xE0, 0x00, 0x60, 0xA0, 0xE0, /* 0xE2 acircumflex */
0x60, 0xC0, 0x60, 0xA0, 0xE0, /* 0xE3 atilde */
0xA0, 0x00, 0x60, 0xA0, 0xE0, /* 0xE4 adieresis */
0x60, 0x60, 0x60, 0xA0, 0xE0, /* 0xE5 aring */
0x60, 0xE0, 0xE0, 0xC0, /* 0xE6 ae */
0x60, 0x80, 0x60, 0x20, 0x40, /* 0xE7 ccedilla */
0x40, 0x20, 0x60, 0xE0, 0x60, /* 0xE8 egrave */
0x40, 0x80, 0x60, 0xE0, 0x60, /* 0xE9 eacute */
0xE0, 0x00, 0x60, 0xE0, 0x60, /* 0xEA ecircumflex */
0xA0, 0x00, 0x60, 0xE0, 0x60, /* 0xEB edieresis */
0x80, 0x40, 0x80, 0x80, 0x80, /* 0xEC igrave */
0x40, 0x80, 0x40, 0x40, 0x40, /* 0xED iacute */
0xE0, 0x00, 0x40, 0x40, 0x40, /* 0xEE icircumflex */
0xA0, 0x00, 0x40, 0x40, 0x40, /* 0xEF idieresis */
0x60, 0xC0, 0x60, 0xA0, 0x60, /* 0xF0 eth */
0xC0, 0x60, 0xC0, 0xA0, 0xA0, /* 0xF1 ntilde */
0x40, 0x20, 0x40, 0xA0, 0x40, /* 0xF2 ograve */
0x40, 0x80, 0x40, 0xA0, 0x40, /* 0xF3 oacute */
0xE0, 0x00, 0x40, 0xA0, 0x40, /* 0xF4 ocircumflex */
0xC0, 0x60, 0x40, 0xA0, 0x40, /* 0xF5 otilde */
0xA0, 0x00, 0x40, 0xA0, 0x40, /* 0xF6 odieresis */
0x40, 0x00, 0xE0, 0x00, 0x40, /* 0xF7 divide */
0x60, 0xE0, 0xA0, 0xC0, /* 0xF8 oslash */
0x80, 0x40, 0xA0, 0xA0, 0x60, /* 0xF9 ugrave */
0x20, 0x40, 0xA0, 0xA0, 0x60, /* 0xFA uacute */
0xE0, 0x00, 0xA0, 0xA0, 0x60, /* 0xFB ucircumflex */
0xA0, 0x00, 0xA0, 0xA0, 0x60, /* 0xFC udieresis */
0x20, 0x40, 0xA0, 0x60, 0x20, 0x40, /* 0xFD yacute */
0x80, 0xC0, 0xA0, 0xC0, 0x80, /* 0xFE thorn */
0xA0, 0x00, 0xA0, 0x60, 0x20, 0x40, /* 0xFF ydieresis */
0x00, /* 0x11D gcircumflex */
0x60, 0xC0, 0xE0, 0xC0, 0x60, /* 0x152 OE */
0x60, 0xE0, 0xC0, 0xE0, /* 0x153 oe */
0xA0, 0x60, 0xC0, 0x60, 0xC0, /* 0x160 Scaron */
0xA0, 0x60, 0xC0, 0x60, 0xC0, /* 0x161 scaron */
0xA0, 0x00, 0xA0, 0x40, 0x40, /* 0x178 Ydieresis */
0xA0, 0xE0, 0x60, 0xC0, 0xE0, /* 0x17D Zcaron */
0xA0, 0xE0, 0x60, 0xC0, 0xE0, /* 0x17E zcaron */
0x00, /* 0xEA4 uni0EA4 */
0x00, /* 0x13A0 uni13A0 */
0x80, /* 0x2022 bullet */
0xA0, /* 0x2026 ellipsis */
0x60, 0xE0, 0xE0, 0xC0, 0x60, /* 0x20AC Euro */
0xE0, 0xA0, 0xA0, 0xA0, 0xE0, /* 0xFFFD uniFFFD */
#endif /* (TOMTHUMB_USE_EXTENDED) */
};
/* {offset, width, height, advance cursor, x offset, y offset} */
const GFXglyph TomThumbGlyphs[] PROGMEM = {
{ 0, 8, 1, 2, 0, -5 }, /* 0x20 space */
{ 1, 8, 5, 2, 0, -5 }, /* 0x21 exclam */
{ 6, 8, 2, 4, 0, -5 }, /* 0x22 quotedbl */
{ 8, 8, 5, 4, 0, -5 }, /* 0x23 numbersign */
{ 13, 8, 5, 4, 0, -5 }, /* 0x24 dollar */
{ 18, 8, 5, 4, 0, -5 }, /* 0x25 percent */
{ 23, 8, 5, 4, 0, -5 }, /* 0x26 ampersand */
{ 28, 8, 2, 2, 0, -5 }, /* 0x27 quotesingle */
{ 30, 8, 5, 3, 0, -5 }, /* 0x28 parenleft */
{ 35, 8, 5, 3, 0, -5 }, /* 0x29 parenright */
{ 40, 8, 3, 4, 0, -5 }, /* 0x2A asterisk */
{ 43, 8, 3, 4, 0, -4 }, /* 0x2B plus */
{ 46, 8, 2, 3, 0, -2 }, /* 0x2C comma */
{ 48, 8, 1, 4, 0, -3 }, /* 0x2D hyphen */
{ 49, 8, 1, 2, 0, -1 }, /* 0x2E period */
{ 50, 8, 5, 4, 0, -5 }, /* 0x2F slash */
{ 55, 8, 5, 4, 0, -5 }, /* 0x30 zero */
{ 60, 8, 5, 3, 0, -5 }, /* 0x31 one */
{ 65, 8, 5, 4, 0, -5 }, /* 0x32 two */
{ 70, 8, 5, 4, 0, -5 }, /* 0x33 three */
{ 75, 8, 5, 4, 0, -5 }, /* 0x34 four */
{ 80, 8, 5, 4, 0, -5 }, /* 0x35 five */
{ 85, 8, 5, 4, 0, -5 }, /* 0x36 six */
{ 90, 8, 5, 4, 0, -5 }, /* 0x37 seven */
{ 95, 8, 5, 4, 0, -5 }, /* 0x38 eight */
{ 100, 8, 5, 4, 0, -5 }, /* 0x39 nine */
{ 105, 8, 3, 2, 0, -4 }, /* 0x3A colon */
{ 108, 8, 4, 3, 0, -4 }, /* 0x3B semicolon */
{ 112, 8, 5, 4, 0, -5 }, /* 0x3C less */
{ 117, 8, 3, 4, 0, -4 }, /* 0x3D equal */
{ 120, 8, 5, 4, 0, -5 }, /* 0x3E greater */
{ 125, 8, 5, 4, 0, -5 }, /* 0x3F question */
{ 130, 8, 5, 4, 0, -5 }, /* 0x40 at */
{ 135, 8, 5, 4, 0, -5 }, /* 0x41 A */
{ 140, 8, 5, 4, 0, -5 }, /* 0x42 B */
{ 145, 8, 5, 4, 0, -5 }, /* 0x43 C */
{ 150, 8, 5, 4, 0, -5 }, /* 0x44 D */
{ 155, 8, 5, 4, 0, -5 }, /* 0x45 E */
{ 160, 8, 5, 4, 0, -5 }, /* 0x46 F */
{ 165, 8, 5, 4, 0, -5 }, /* 0x47 G */
{ 170, 8, 5, 4, 0, -5 }, /* 0x48 H */
{ 175, 8, 5, 4, 0, -5 }, /* 0x49 I */
{ 180, 8, 5, 4, 0, -5 }, /* 0x4A J */
{ 185, 8, 5, 4, 0, -5 }, /* 0x4B K */
{ 190, 8, 5, 4, 0, -5 }, /* 0x4C L */
{ 195, 8, 5, 4, 0, -5 }, /* 0x4D M */
{ 200, 8, 5, 4, 0, -5 }, /* 0x4E N */
{ 205, 8, 5, 4, 0, -5 }, /* 0x4F O */
{ 210, 8, 5, 4, 0, -5 }, /* 0x50 P */
{ 215, 8, 5, 4, 0, -5 }, /* 0x51 Q */
{ 220, 8, 5, 4, 0, -5 }, /* 0x52 R */
{ 225, 8, 5, 4, 0, -5 }, /* 0x53 S */
{ 230, 8, 5, 4, 0, -5 }, /* 0x54 T */
{ 235, 8, 5, 4, 0, -5 }, /* 0x55 U */
{ 240, 8, 5, 4, 0, -5 }, /* 0x56 V */
{ 245, 8, 5, 4, 0, -5 }, /* 0x57 W */
{ 250, 8, 5, 4, 0, -5 }, /* 0x58 X */
{ 255, 8, 5, 4, 0, -5 }, /* 0x59 Y */
{ 260, 8, 5, 4, 0, -5 }, /* 0x5A Z */
{ 265, 8, 5, 4, 0, -5 }, /* 0x5B bracketleft */
{ 270, 8, 3, 4, 0, -4 }, /* 0x5C backslash */
{ 273, 8, 5, 4, 0, -5 }, /* 0x5D bracketright */
{ 278, 8, 2, 4, 0, -5 }, /* 0x5E asciicircum */
{ 280, 8, 1, 4, 0, -1 }, /* 0x5F underscore */
{ 281, 8, 2, 3, 0, -5 }, /* 0x60 grave */
{ 283, 8, 4, 4, 0, -4 }, /* 0x61 a */
{ 287, 8, 5, 4, 0, -5 }, /* 0x62 b */
{ 292, 8, 4, 4, 0, -4 }, /* 0x63 c */
{ 296, 8, 5, 4, 0, -5 }, /* 0x64 d */
{ 301, 8, 4, 4, 0, -4 }, /* 0x65 e */
{ 305, 8, 5, 4, 0, -5 }, /* 0x66 f */
{ 310, 8, 5, 4, 0, -4 }, /* 0x67 g */
{ 315, 8, 5, 4, 0, -5 }, /* 0x68 h */
{ 320, 8, 5, 2, 0, -5 }, /* 0x69 i */
{ 325, 8, 6, 4, 0, -5 }, /* 0x6A j */
{ 331, 8, 5, 4, 0, -5 }, /* 0x6B k */
{ 336, 8, 5, 4, 0, -5 }, /* 0x6C l */
{ 341, 8, 4, 4, 0, -4 }, /* 0x6D m */
{ 345, 8, 4, 4, 0, -4 }, /* 0x6E n */
{ 349, 8, 4, 4, 0, -4 }, /* 0x6F o */
{ 353, 8, 5, 4, 0, -4 }, /* 0x70 p */
{ 358, 8, 5, 4, 0, -4 }, /* 0x71 q */
{ 363, 8, 4, 4, 0, -4 }, /* 0x72 r */
{ 367, 8, 4, 4, 0, -4 }, /* 0x73 s */
{ 371, 8, 5, 4, 0, -5 }, /* 0x74 t */
{ 376, 8, 4, 4, 0, -4 }, /* 0x75 u */
{ 380, 8, 4, 4, 0, -4 }, /* 0x76 v */
{ 384, 8, 4, 4, 0, -4 }, /* 0x77 w */
{ 388, 8, 4, 4, 0, -4 }, /* 0x78 x */
{ 392, 8, 5, 4, 0, -4 }, /* 0x79 y */
{ 397, 8, 4, 4, 0, -4 }, /* 0x7A z */
{ 401, 8, 5, 4, 0, -5 }, /* 0x7B braceleft */
{ 406, 8, 5, 2, 0, -5 }, /* 0x7C bar */
{ 411, 8, 5, 4, 0, -5 }, /* 0x7D braceright */
{ 416, 8, 2, 4, 0, -5 }, /* 0x7E asciitilde */
#if (TOMTHUMB_USE_EXTENDED)
{ 418, 8, 5, 2, 0, -5 }, /* 0xA1 exclamdown */
{ 423, 8, 5, 4, 0, -5 }, /* 0xA2 cent */
{ 428, 8, 5, 4, 0, -5 }, /* 0xA3 sterling */
{ 433, 8, 5, 4, 0, -5 }, /* 0xA4 currency */
{ 438, 8, 5, 4, 0, -5 }, /* 0xA5 yen */
{ 443, 8, 5, 2, 0, -5 }, /* 0xA6 brokenbar */
{ 448, 8, 5, 4, 0, -5 }, /* 0xA7 section */
{ 453, 8, 1, 4, 0, -5 }, /* 0xA8 dieresis */
{ 454, 8, 3, 4, 0, -5 }, /* 0xA9 copyright */
{ 457, 8, 5, 4, 0, -5 }, /* 0xAA ordfeminine */
{ 462, 8, 3, 3, 0, -5 }, /* 0xAB guillemotleft */
{ 465, 8, 2, 4, 0, -4 }, /* 0xAC logicalnot */
{ 467, 8, 1, 3, 0, -3 }, /* 0xAD softhyphen */
{ 468, 8, 3, 4, 0, -5 }, /* 0xAE registered */
{ 471, 8, 1, 4, 0, -5 }, /* 0xAF macron */
{ 472, 8, 3, 4, 0, -5 }, /* 0xB0 degree */
{ 475, 8, 5, 4, 0, -5 }, /* 0xB1 plusminus */
{ 480, 8, 3, 4, 0, -5 }, /* 0xB2 twosuperior */
{ 483, 8, 3, 4, 0, -5 }, /* 0xB3 threesuperior */
{ 486, 8, 2, 3, 0, -5 }, /* 0xB4 acute */
{ 488, 8, 5, 4, 0, -5 }, /* 0xB5 mu */
{ 493, 8, 5, 4, 0, -5 }, /* 0xB6 paragraph */
{ 498, 8, 3, 4, 0, -4 }, /* 0xB7 periodcentered */
{ 501, 8, 3, 4, 0, -3 }, /* 0xB8 cedilla */
{ 504, 8, 3, 2, 0, -5 }, /* 0xB9 onesuperior */
{ 507, 8, 5, 4, 0, -5 }, /* 0xBA ordmasculine */
{ 512, 8, 3, 3, 0, -5 }, /* 0xBB guillemotright */
{ 515, 8, 5, 4, 0, -5 }, /* 0xBC onequarter */
{ 520, 8, 5, 4, 0, -5 }, /* 0xBD onehalf */
{ 525, 8, 5, 4, 0, -5 }, /* 0xBE threequarters */
{ 530, 8, 5, 4, 0, -5 }, /* 0xBF questiondown */
{ 535, 8, 5, 4, 0, -5 }, /* 0xC0 Agrave */
{ 540, 8, 5, 4, 0, -5 }, /* 0xC1 Aacute */
{ 545, 8, 5, 4, 0, -5 }, /* 0xC2 Acircumflex */
{ 550, 8, 5, 4, 0, -5 }, /* 0xC3 Atilde */
{ 555, 8, 5, 4, 0, -5 }, /* 0xC4 Adieresis */
{ 560, 8, 5, 4, 0, -5 }, /* 0xC5 Aring */
{ 565, 8, 5, 4, 0, -5 }, /* 0xC6 AE */
{ 570, 8, 6, 4, 0, -5 }, /* 0xC7 Ccedilla */
{ 576, 8, 5, 4, 0, -5 }, /* 0xC8 Egrave */
{ 581, 8, 5, 4, 0, -5 }, /* 0xC9 Eacute */
{ 586, 8, 5, 4, 0, -5 }, /* 0xCA Ecircumflex */
{ 591, 8, 5, 4, 0, -5 }, /* 0xCB Edieresis */
{ 596, 8, 5, 4, 0, -5 }, /* 0xCC Igrave */
{ 601, 8, 5, 4, 0, -5 }, /* 0xCD Iacute */
{ 606, 8, 5, 4, 0, -5 }, /* 0xCE Icircumflex */
{ 611, 8, 5, 4, 0, -5 }, /* 0xCF Idieresis */
{ 616, 8, 5, 4, 0, -5 }, /* 0xD0 Eth */
{ 621, 8, 5, 4, 0, -5 }, /* 0xD1 Ntilde */
{ 626, 8, 5, 4, 0, -5 }, /* 0xD2 Ograve */
{ 631, 8, 5, 4, 0, -5 }, /* 0xD3 Oacute */
{ 636, 8, 5, 4, 0, -5 }, /* 0xD4 Ocircumflex */
{ 641, 8, 5, 4, 0, -5 }, /* 0xD5 Otilde */
{ 646, 8, 5, 4, 0, -5 }, /* 0xD6 Odieresis */
{ 651, 8, 3, 4, 0, -4 }, /* 0xD7 multiply */
{ 654, 8, 5, 4, 0, -5 }, /* 0xD8 Oslash */
{ 659, 8, 5, 4, 0, -5 }, /* 0xD9 Ugrave */
{ 664, 8, 5, 4, 0, -5 }, /* 0xDA Uacute */
{ 669, 8, 5, 4, 0, -5 }, /* 0xDB Ucircumflex */
{ 674, 8, 5, 4, 0, -5 }, /* 0xDC Udieresis */
{ 679, 8, 5, 4, 0, -5 }, /* 0xDD Yacute */
{ 684, 8, 5, 4, 0, -5 }, /* 0xDE Thorn */
{ 689, 8, 6, 4, 0, -5 }, /* 0xDF germandbls */
{ 695, 8, 5, 4, 0, -5 }, /* 0xE0 agrave */
{ 700, 8, 5, 4, 0, -5 }, /* 0xE1 aacute */
{ 705, 8, 5, 4, 0, -5 }, /* 0xE2 acircumflex */
{ 710, 8, 5, 4, 0, -5 }, /* 0xE3 atilde */
{ 715, 8, 5, 4, 0, -5 }, /* 0xE4 adieresis */
{ 720, 8, 5, 4, 0, -5 }, /* 0xE5 aring */
{ 725, 8, 4, 4, 0, -4 }, /* 0xE6 ae */
{ 729, 8, 5, 4, 0, -4 }, /* 0xE7 ccedilla */
{ 734, 8, 5, 4, 0, -5 }, /* 0xE8 egrave */
{ 739, 8, 5, 4, 0, -5 }, /* 0xE9 eacute */
{ 744, 8, 5, 4, 0, -5 }, /* 0xEA ecircumflex */
{ 749, 8, 5, 4, 0, -5 }, /* 0xEB edieresis */
{ 754, 8, 5, 3, 0, -5 }, /* 0xEC igrave */
{ 759, 8, 5, 3, 0, -5 }, /* 0xED iacute */
{ 764, 8, 5, 4, 0, -5 }, /* 0xEE icircumflex */
{ 769, 8, 5, 4, 0, -5 }, /* 0xEF idieresis */
{ 774, 8, 5, 4, 0, -5 }, /* 0xF0 eth */
{ 779, 8, 5, 4, 0, -5 }, /* 0xF1 ntilde */
{ 784, 8, 5, 4, 0, -5 }, /* 0xF2 ograve */
{ 789, 8, 5, 4, 0, -5 }, /* 0xF3 oacute */
{ 794, 8, 5, 4, 0, -5 }, /* 0xF4 ocircumflex */
{ 799, 8, 5, 4, 0, -5 }, /* 0xF5 otilde */
{ 804, 8, 5, 4, 0, -5 }, /* 0xF6 odieresis */
{ 809, 8, 5, 4, 0, -5 }, /* 0xF7 divide */
{ 814, 8, 4, 4, 0, -4 }, /* 0xF8 oslash */
{ 818, 8, 5, 4, 0, -5 }, /* 0xF9 ugrave */
{ 823, 8, 5, 4, 0, -5 }, /* 0xFA uacute */
{ 828, 8, 5, 4, 0, -5 }, /* 0xFB ucircumflex */
{ 833, 8, 5, 4, 0, -5 }, /* 0xFC udieresis */
{ 838, 8, 6, 4, 0, -5 }, /* 0xFD yacute */
{ 844, 8, 5, 4, 0, -4 }, /* 0xFE thorn */
{ 849, 8, 6, 4, 0, -5 }, /* 0xFF ydieresis */
{ 855, 8, 1, 2, 0, -1 }, /* 0x11D gcircumflex */
{ 856, 8, 5, 4, 0, -5 }, /* 0x152 OE */
{ 861, 8, 4, 4, 0, -4 }, /* 0x153 oe */
{ 865, 8, 5, 4, 0, -5 }, /* 0x160 Scaron */
{ 870, 8, 5, 4, 0, -5 }, /* 0x161 scaron */
{ 875, 8, 5, 4, 0, -5 }, /* 0x178 Ydieresis */
{ 880, 8, 5, 4, 0, -5 }, /* 0x17D Zcaron */
{ 885, 8, 5, 4, 0, -5 }, /* 0x17E zcaron */
{ 890, 8, 1, 2, 0, -1 }, /* 0xEA4 uni0EA4 */
{ 891, 8, 1, 2, 0, -1 }, /* 0x13A0 uni13A0 */
{ 892, 8, 1, 2, 0, -3 }, /* 0x2022 bullet */
{ 893, 8, 1, 4, 0, -1 }, /* 0x2026 ellipsis */
{ 894, 8, 5, 4, 0, -5 }, /* 0x20AC Euro */
{ 899, 8, 5, 4, 0, -5 }, /* 0xFFFD uniFFFD */
#endif /* (TOMTHUMB_USE_EXTENDED) */
};
const GFXfont TomThumb PROGMEM = {
(uint8_t *)TomThumbBitmaps,
(GFXglyph *)TomThumbGlyphs,
0x20, 0x7E, 6 };

25
include/st7735_font.h
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@ -0,0 +1,25 @@
#ifndef _ST7735_FONT_H_
#define _ST7735_FONT_H_
#include <stdint.h>
#include <avr/pgmspace.h>
typedef struct { // Data stored PER GLYPH
uint16_t bitmapOffset; // Pointer into GFXfont->bitmap
uint8_t width, height; // Bitmap dimensions in pixels
uint8_t xAdvance; // Distance to advance cursor (x axis)
int8_t xOffset, yOffset; // Dist from cursor pos to UL corner
} GFXglyph;
typedef struct { // Data stored for FONT AS A WHOLE:
uint8_t *bitmap; // Glyph bitmaps, concatenated
GFXglyph *glyph; // Glyph array
uint8_t first, last; // ASCII extents
uint8_t yAdvance; // Newline distance (y axis)
} GFXfont;
void st7735_draw_text(int8_t x, int8_t y, char *text, const GFXfont *p_font, uint8_t size, uint16_t color);
#endif

13
main.c
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@ -4,10 +4,13 @@
#include "spi.h"
#include "st7735.h"
#include "st7735_gfx.h"
#include "st7735_font.h"
#include "logo.h"
//#include "logo.h"
#include "logo_bw.h"
#include "tom_thumb.h"
int main(void) {
spi_init();
st7735_init();
@ -17,7 +20,7 @@ int main(void) {
st7735_draw_mono_bitmap(0, 0, &logo_bw, ST7735_COLOR_WHITE, ST7735_COLOR_BLACK);
st7735_draw_bitmap(10, 10, &logo);
//st7735_draw_bitmap(10, 10, &logo);
for(uint8_t x = 8; x <= 160; x += 8) {
@ -44,5 +47,11 @@ int main(void) {
w += 20;
}
_delay_ms(1000);
st7735_fill_rect(0, 0, 160, 128, ST7735_COLOR_BLACK);
st7735_draw_text(10, 30, "This is\nJust a Test", &TomThumb, 3, ST7735_COLOR_CYAN);
st7735_draw_fast_hline(10, 30, 100, ST7735_COLOR_RED);
while(1);
}

85
st7735_font.c
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@ -0,0 +1,85 @@
#include "st7735_font.h"
#include <string.h>
#include <avr/pgmspace.h>
#include "st7735.h"
void st7735_draw_char(int16_t x, int16_t y, const GFXglyph *glyph, const GFXfont *font,
uint8_t size, uint16_t color) {
if(size < 1) {
return;
}
// Clipping will be done by fill rect if necessary
uint8_t *bitmap = font->bitmap;
uint16_t bo = glyph->bitmapOffset;
uint8_t bits = 0, bit = 0;
uint16_t set_pixels = 0;
uint8_t cur_x, cur_y;
for(cur_y = 0; cur_y < glyph->height; cur_y++) {
for(cur_x = 0; cur_x < glyph->width; cur_x++) {
if(bit == 0) {
bits = pgm_read_byte(&bitmap[bo++]);
bit = 0x80;
}
if(bits & bit) {
set_pixels++;
} else if (set_pixels > 0) {
st7735_fill_rect(x + (glyph->xOffset + cur_x-set_pixels) * size,
y + (glyph->yOffset+cur_y) * size,
size * set_pixels,
size,
color);
set_pixels=0;
}
bit >>= 1;
}
// Draw rest of line
if (set_pixels > 0) {
st7735_fill_rect(x + (glyph->xOffset + cur_x-set_pixels) * size,
y + (glyph->yOffset + cur_y) * size,
size * set_pixels,
size,
color);
set_pixels=0;
}
}
}
void st7735_draw_text(int8_t x, int8_t y, char *text, const GFXfont *p_font,
uint8_t size, uint16_t color) {
int16_t cursor_x = x;
int16_t cursor_y = y;
GFXfont font;
memcpy_P(&font, p_font, sizeof(GFXfont));
for(uint16_t text_pos = 0; text_pos < strlen(text); text_pos++) {
char c = text[text_pos];
if(c == '\n') {
cursor_x = x;
cursor_y += font.yAdvance * size;
}
else if(c >= font.first && c <= font.last && c != '\r') {
GFXglyph glyph;
memcpy_P(&glyph, &font.glyph[c - font.first], sizeof(GFXglyph));
st7735_draw_char(cursor_x, cursor_y, &glyph, &font, size, color);
cursor_x += glyph.xAdvance * size;
}
}
}
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