From 9e66404e8e704037aff06713ed0cdfa43fc1b220 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Fri, 15 Jan 2016 16:26:32 +0100
Subject: move sources to src and build files to build

---
 src/font.h  | 264 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/font2.h | 266 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/main.cc | 217 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/modem.c |  95 ++++++++++++++++++++++
 src/modem.h |  24 ++++++
 5 files changed, 866 insertions(+)
 create mode 100644 src/font.h
 create mode 100644 src/font2.h
 create mode 100644 src/main.cc
 create mode 100644 src/modem.c
 create mode 100644 src/modem.h

(limited to 'src')

diff --git a/src/font.h b/src/font.h
new file mode 100644
index 0000000..839277b
--- /dev/null
+++ b/src/font.h
@@ -0,0 +1,264 @@
+#ifndef FONT_H_
+#define FONT_H_
+
+#include <avr/pgmspace.h>
+
+typedef const unsigned char* glyph_t;
+
+const unsigned char PROGMEM chr_001[] = {0x08, 0x00, 0x20, 0x44, 0x40, 0x44, 0x20, 0x00, 0x00};	// happy smiley
+const unsigned char PROGMEM chr_002[] = {0x08, 0x00, 0x40, 0x24, 0x20, 0x24, 0x40, 0x00, 0x00};	// sad smiley
+const unsigned char PROGMEM chr_003[] = {0x05, 0x18, 0xEC, 0x5C, 0xEC, 0x18};	// skull
+const unsigned char PROGMEM chr_004[] = {0x05, 0x18, 0x24, 0x48, 0x24, 0x18};	// heart
+const unsigned char PROGMEM chr_005[] = {0x05, 0xD8, 0x34, 0xDE, 0x34, 0xD8};	// invader1
+const unsigned char PROGMEM chr_006[] = {0x05, 0xFA, 0xB4, 0x3C, 0xB4, 0xFA};	// invader2
+const unsigned char PROGMEM chr_007[] = {0x05, 0x9C, 0xF6, 0x1E, 0xF6, 0x9C};	// invader3
+const unsigned char PROGMEM chr_008[] = {0x05, 0xF8, 0x74, 0xFC, 0x74, 0xF8};	// ghost
+const unsigned char PROGMEM chr_009[] = {0x05, 0x3C, 0x68, 0xF8, 0x68, 0x3C};	// fox
+const unsigned char PROGMEM chr_010[] = {0x07, 0x7C, 0x40, 0x40, 0x00, 0x7C, 0x14, 0x04};	// <LF>
+const unsigned char PROGMEM chr_011[] = {0x05, 0x60, 0x60, 0x3E, 0xCA, 0xFC};	// 2 musical notes
+const unsigned char PROGMEM chr_012[] = {0x04, 0xC0, 0xFE, 0x04, 0x18};	// musical note
+const unsigned char PROGMEM chr_013[] = {0x07, 0x38, 0x44, 0x44, 0x00, 0x7C, 0x14, 0x68};	// <CR>
+const unsigned char PROGMEM chr_014[] = {0x05, 0x06, 0x8A, 0xF2, 0x8A, 0x06};	// glass
+const unsigned char PROGMEM chr_015[] = {0x04, 0xFC, 0xF4, 0xF4, 0xFE};	// mobile
+const unsigned char PROGMEM chr_016[] = {0x04, 0xE0, 0xCC, 0xAA, 0x19};	// flash
+const unsigned char PROGMEM chr_017[] = {0x05, 0x0E, 0x71, 0xF9, 0x71, 0x0E};	// lightbulb
+const unsigned char PROGMEM chr_018[] = {0x05, 0x10, 0x38, 0x54, 0x10, 0x10};	// <-
+const unsigned char PROGMEM chr_019[] = {0x05, 0x10, 0x10, 0x54, 0x38, 0x10};	// ->
+const unsigned char PROGMEM chr_020[] = {0x05, 0x60, 0x90, 0x9A, 0x66, 0x0E};	// male
+const unsigned char PROGMEM chr_021[] = {0x05, 0x0C, 0x52, 0xF2, 0x52, 0x0C};	// female
+const unsigned char PROGMEM chr_022[] = {0x07, 0x0C, 0xEE, 0xB2, 0x9A, 0xB2, 0xEE, 0x0C};	// telephone
+const unsigned char PROGMEM chr_023[] = {0x05, 0x88, 0x48, 0x3A, 0x48, 0x88};	// stick figure
+const unsigned char PROGMEM chr_024[] = {0x07, 0x10, 0x28, 0x54, 0xAA, 0x54, 0x28, 0x10};	// diamond
+const unsigned char PROGMEM chr_025[] = {0x05, 0x38, 0x44, 0x5C, 0x54, 0x38};	// clock
+const unsigned char PROGMEM chr_026[] = {0x05, 0x20, 0x3C, 0x7E, 0x3C, 0x20};	// bell
+const unsigned char PROGMEM chr_027[] = {0x05, 0xC6, 0xAA, 0x92, 0x82, 0x82};	// sigma
+const unsigned char PROGMEM chr_028[] = {0x05, 0xB8, 0xC4, 0x04, 0xC4, 0xB8};	// omega
+const unsigned char PROGMEM chr_029[] = {0x06, 0x10, 0x38, 0x7C, 0xFE, 0xC6, 0x82};	// left
+const unsigned char PROGMEM chr_030[] = {0x06, 0x82, 0xC6, 0xFE, 0x7C, 0x38, 0x10};	// right
+const unsigned char PROGMEM chr_031[] = {0x07, 0x70, 0x88, 0x70, 0x00, 0xFE, 0x10, 0xEC};	// ok
+const unsigned char PROGMEM chr_032[] = {0x03, 0x00, 0x00, 0x00};	// <space>
+const unsigned char PROGMEM chr_033[] = {0x01, 0xBE};	// !
+const unsigned char PROGMEM chr_034[] = {0x03, 0x06, 0x00, 0x06};	// "
+const unsigned char PROGMEM chr_035[] = {0x05, 0x28, 0xFE, 0x28, 0xFE, 0x28};	// #
+const unsigned char PROGMEM chr_036[] = {0x05, 0x48, 0x54, 0xFE, 0x54, 0x24};	// $
+const unsigned char PROGMEM chr_037[] = {0x05, 0x46, 0x26, 0x10, 0xC8, 0xC4};	// %
+const unsigned char PROGMEM chr_038[] = {0x05, 0x6C, 0x92, 0xAC, 0x40, 0xA0};	// &
+const unsigned char PROGMEM chr_039[] = {0x02, 0x0A, 0x06};	// '
+const unsigned char PROGMEM chr_040[] = {0x03, 0x38, 0x44, 0x82};	// (
+const unsigned char PROGMEM chr_041[] = {0x03, 0x82, 0x44, 0x38};	// )
+const unsigned char PROGMEM chr_042[] = {0x05, 0x44, 0x28, 0xD6, 0x28, 0x44};	// *
+const unsigned char PROGMEM chr_043[] = {0x05, 0x10, 0x10, 0x7C, 0x10, 0x10};	// +
+const unsigned char PROGMEM chr_044[] = {0x02, 0x80, 0x40};	// ,
+const unsigned char PROGMEM chr_045[] = {0x04, 0x10, 0x10, 0x10, 0x10};	// -
+const unsigned char PROGMEM chr_046[] = {0x01, 0x80};	// .
+const unsigned char PROGMEM chr_047[] = {0x05, 0xC0, 0x20, 0x10, 0x08, 0x06};	// /
+const unsigned char PROGMEM chr_048[] = {0x04, 0x7C, 0x82, 0x82, 0x7C};	// 0
+const unsigned char PROGMEM chr_049[] = {0x03, 0x84, 0xFE, 0x80};	// 1
+const unsigned char PROGMEM chr_050[] = {0x04, 0xC4, 0xA2, 0x92, 0x8C};	// 2
+const unsigned char PROGMEM chr_051[] = {0x04, 0x44, 0x82, 0x92, 0x6C};	// 3
+const unsigned char PROGMEM chr_052[] = {0x04, 0x30, 0x28, 0x24, 0xFE};	// 4
+const unsigned char PROGMEM chr_053[] = {0x04, 0x4E, 0x8A, 0x8A, 0x72};	// 5
+const unsigned char PROGMEM chr_054[] = {0x04, 0x78, 0x94, 0x92, 0x62};	// 6
+const unsigned char PROGMEM chr_055[] = {0x04, 0x02, 0xE2, 0x1A, 0x06};	// 7
+const unsigned char PROGMEM chr_056[] = {0x04, 0x6C, 0x92, 0x92, 0x6C};	// 8
+const unsigned char PROGMEM chr_057[] = {0x04, 0x0C, 0x92, 0x52, 0x3C};	// 9
+const unsigned char PROGMEM chr_058[] = {0x01, 0x50};	// :
+const unsigned char PROGMEM chr_059[] = {0x02, 0x80, 0x50};	// ;
+const unsigned char PROGMEM chr_060[] = {0x04, 0x10, 0x28, 0x44, 0x82};	// <
+const unsigned char PROGMEM chr_061[] = {0x04, 0x28, 0x28, 0x28, 0x28};	// =
+const unsigned char PROGMEM chr_062[] = {0x04, 0x82, 0x44, 0x28, 0x10};	// >
+const unsigned char PROGMEM chr_063[] = {0x04, 0x04, 0xA2, 0x12, 0x0C};	// ?
+const unsigned char PROGMEM chr_064[] = {0x05, 0x64, 0x92, 0xF2, 0x82, 0x7C};	// @
+const unsigned char PROGMEM chr_065[] = {0x04, 0xFC, 0x12, 0x12, 0xFC};	// A
+const unsigned char PROGMEM chr_066[] = {0x04, 0xFE, 0x92, 0x92, 0x6C};	// B
+const unsigned char PROGMEM chr_067[] = {0x04, 0x7C, 0x82, 0x82, 0x44};	// C
+const unsigned char PROGMEM chr_068[] = {0x04, 0xFE, 0x82, 0x82, 0x7C};	// D
+const unsigned char PROGMEM chr_069[] = {0x04, 0xFE, 0x92, 0x92, 0x82};	// E
+const unsigned char PROGMEM chr_070[] = {0x04, 0xFE, 0x12, 0x12, 0x02};	// F
+const unsigned char PROGMEM chr_071[] = {0x04, 0x7C, 0x82, 0x92, 0x74};	// G
+const unsigned char PROGMEM chr_072[] = {0x04, 0xFE, 0x10, 0x10, 0xFE};	// H
+const unsigned char PROGMEM chr_073[] = {0x03, 0x82, 0xFE, 0x82};	// I
+const unsigned char PROGMEM chr_074[] = {0x04, 0x40, 0x80, 0x80, 0x7E};	// J
+const unsigned char PROGMEM chr_075[] = {0x04, 0xFE, 0x10, 0x28, 0xC6};	// K
+const unsigned char PROGMEM chr_076[] = {0x04, 0xFE, 0x80, 0x80, 0x80};	// L
+const unsigned char PROGMEM chr_077[] = {0x05, 0xFE, 0x04, 0x18, 0x04, 0xFE};	// M
+const unsigned char PROGMEM chr_078[] = {0x04, 0xFE, 0x0C, 0x30, 0xFE};	// N
+const unsigned char PROGMEM chr_079[] = {0x04, 0x7C, 0x82, 0x82, 0x7C};	// O
+const unsigned char PROGMEM chr_080[] = {0x04, 0xFE, 0x12, 0x12, 0x0C};	// P
+const unsigned char PROGMEM chr_081[] = {0x04, 0x7C, 0x82, 0x42, 0xBC};	// Q
+const unsigned char PROGMEM chr_082[] = {0x04, 0xFE, 0x12, 0x32, 0xCC};	// R
+const unsigned char PROGMEM chr_083[] = {0x04, 0x4C, 0x92, 0x92, 0x64};	// S
+const unsigned char PROGMEM chr_084[] = {0x05, 0x02, 0x02, 0xFE, 0x02, 0x02};	// T
+const unsigned char PROGMEM chr_085[] = {0x04, 0x7E, 0x80, 0x80, 0x7E};	// U
+const unsigned char PROGMEM chr_086[] = {0x05, 0x0E, 0x30, 0xC0, 0x30, 0x0E};	// V
+const unsigned char PROGMEM chr_087[] = {0x05, 0x7E, 0x80, 0x70, 0x80, 0x7E};	// W
+const unsigned char PROGMEM chr_088[] = {0x05, 0xC6, 0x28, 0x10, 0x28, 0xC6};	// X
+const unsigned char PROGMEM chr_089[] = {0x05, 0x06, 0x08, 0xF0, 0x08, 0x06};	// Y
+const unsigned char PROGMEM chr_090[] = {0x04, 0xC2, 0xB2, 0x8A, 0x86};	// Z
+const unsigned char PROGMEM chr_091[] = {0x03, 0xFE, 0x82, 0x82};	// [
+const unsigned char PROGMEM chr_092[] = {0x05, 0x06, 0x08, 0x10, 0x20, 0xC0};	// backslash
+const unsigned char PROGMEM chr_093[] = {0x03, 0x82, 0x82, 0xFE};	// ]
+const unsigned char PROGMEM chr_094[] = {0x03, 0x04, 0x02, 0x04};	// ^
+const unsigned char PROGMEM chr_095[] = {0x04, 0x80, 0x80, 0x80, 0x80};	// _
+const unsigned char PROGMEM chr_096[] = {0x02, 0x06, 0x08};	// `
+const unsigned char PROGMEM chr_097[] = {0x04, 0x40, 0xA8, 0xA8, 0xF0};	// a
+const unsigned char PROGMEM chr_098[] = {0x04, 0xFE, 0x88, 0x88, 0x70};	// b
+const unsigned char PROGMEM chr_099[] = {0x04, 0x70, 0x88, 0x88, 0x40};	// c
+const unsigned char PROGMEM chr_100[] = {0x04, 0x70, 0x88, 0x88, 0xFE};	// d
+const unsigned char PROGMEM chr_101[] = {0x04, 0x70, 0xA8, 0xA8, 0x90};	// e
+const unsigned char PROGMEM chr_102[] = {0x04, 0x08, 0xFC, 0x0A, 0x02};	// f
+const unsigned char PROGMEM chr_103[] = {0x04, 0x10, 0xA8, 0xA8, 0x78};	// g
+const unsigned char PROGMEM chr_104[] = {0x04, 0xFE, 0x10, 0x10, 0xE0};	// h
+const unsigned char PROGMEM chr_105[] = {0x01, 0xFA};	// i
+const unsigned char PROGMEM chr_106[] = {0x03, 0x40, 0x80, 0x7A};	// j
+const unsigned char PROGMEM chr_107[] = {0x04, 0xFE, 0x10, 0x28, 0xC4};	// k
+const unsigned char PROGMEM chr_108[] = {0x03, 0x82, 0xFE, 0x80};	// l
+const unsigned char PROGMEM chr_109[] = {0x05, 0xF8, 0x08, 0xF0, 0x08, 0xF0};	// m
+const unsigned char PROGMEM chr_110[] = {0x04, 0xF8, 0x08, 0x08, 0xF0};	// n
+const unsigned char PROGMEM chr_111[] = {0x04, 0x70, 0x88, 0x88, 0x70};	// o
+const unsigned char PROGMEM chr_112[] = {0x04, 0xF8, 0x48, 0x48, 0x30};	// p
+const unsigned char PROGMEM chr_113[] = {0x04, 0x30, 0x48, 0x48, 0xF8};	// q
+const unsigned char PROGMEM chr_114[] = {0x03, 0xF0, 0x08, 0x08};	// r
+const unsigned char PROGMEM chr_115[] = {0x04, 0x90, 0xA8, 0xA8, 0x48};	// s
+const unsigned char PROGMEM chr_116[] = {0x04, 0x08, 0x7E, 0x88, 0x88};	// t
+const unsigned char PROGMEM chr_117[] = {0x04, 0x78, 0x80, 0x80, 0xF8};	// u
+const unsigned char PROGMEM chr_118[] = {0x05, 0x18, 0x60, 0x80, 0x60, 0x18};	// v
+const unsigned char PROGMEM chr_119[] = {0x05, 0x78, 0x80, 0x60, 0x80, 0x78};	// w
+const unsigned char PROGMEM chr_120[] = {0x05, 0x88, 0x50, 0x20, 0x50, 0x88};	// x
+const unsigned char PROGMEM chr_121[] = {0x04, 0x18, 0xA0, 0xA0, 0x78};	// y
+const unsigned char PROGMEM chr_122[] = {0x04, 0xC8, 0xA8, 0x98, 0x88};	// z
+const unsigned char PROGMEM chr_123[] = {0x03, 0x10, 0x6C, 0x82};	// {
+const unsigned char PROGMEM chr_124[] = {0x01, 0xFF};	// |
+const unsigned char PROGMEM chr_125[] = {0x03, 0x82, 0x6C, 0x10};	// }
+const unsigned char PROGMEM chr_126[] = {0x05, 0x10, 0x08, 0x10, 0x20, 0x10};	// ~
+
+const glyph_t font[] PROGMEM = {
+	chr_001,
+	chr_002,
+	chr_003,
+	chr_004,
+	chr_005,
+	chr_006,
+	chr_007,
+	chr_008,
+	chr_009,
+	chr_010,
+	chr_011,
+	chr_012,
+	chr_013,
+	chr_014,
+	chr_015,
+	chr_016,
+	chr_017,
+	chr_018,
+	chr_019,
+	chr_020,
+	chr_021,
+	chr_022,
+	chr_023,
+	chr_024,
+	chr_025,
+	chr_026,
+	chr_027,
+	chr_028,
+	chr_029,
+	chr_030,
+	chr_031,
+	chr_032,
+	chr_033,
+	chr_034,
+	chr_035,
+	chr_036,
+	chr_037,
+	chr_038,
+	chr_039,
+	chr_040,
+	chr_041,
+	chr_042,
+	chr_043,
+	chr_044,
+	chr_045,
+	chr_046,
+	chr_047,
+	chr_048,
+	chr_049,
+	chr_050,
+	chr_051,
+	chr_052,
+	chr_053,
+	chr_054,
+	chr_055,
+	chr_056,
+	chr_057,
+	chr_058,
+	chr_059,
+	chr_060,
+	chr_061,
+	chr_062,
+	chr_063,
+	chr_064,
+	chr_065,
+	chr_066,
+	chr_067,
+	chr_068,
+	chr_069,
+	chr_070,
+	chr_071,
+	chr_072,
+	chr_073,
+	chr_074,
+	chr_075,
+	chr_076,
+	chr_077,
+	chr_078,
+	chr_079,
+	chr_080,
+	chr_081,
+	chr_082,
+	chr_083,
+	chr_084,
+	chr_085,
+	chr_086,
+	chr_087,
+	chr_088,
+	chr_089,
+	chr_090,
+	chr_091,
+	chr_092,
+	chr_093,
+	chr_094,
+	chr_095,
+	chr_096,
+	chr_097,
+	chr_098,
+	chr_099,
+	chr_100,
+	chr_101,
+	chr_102,
+	chr_103,
+	chr_104,
+	chr_105,
+	chr_106,
+	chr_107,
+	chr_108,
+	chr_109,
+	chr_110,
+	chr_111,
+	chr_112,
+	chr_113,
+	chr_114,
+	chr_115,
+	chr_116,
+	chr_117,
+	chr_118,
+	chr_119,
+	chr_120,
+	chr_121,
+	chr_122,
+	chr_123,
+	chr_124,
+	chr_125,
+	chr_126
+};
+
+#endif /* FONT_H_ */
diff --git a/src/font2.h b/src/font2.h
new file mode 100644
index 0000000..aea6b8a
--- /dev/null
+++ b/src/font2.h
@@ -0,0 +1,266 @@
+#ifndef FONT_H_
+#define FONT_H_
+
+#include <avr/pgmspace.h>
+
+typedef const unsigned char* glyph_t;
+
+const unsigned char PROGMEM chr_001[] = {0x08,0x00,0x04,0x22,0x02,0x22,0x04,0x00,0x00}; // happy smiley
+const unsigned char PROGMEM chr_002[] = {0x08,0x00,0x02,0x24,0x04,0x24,0x02,0x00,0x00}; // sad smiley
+const unsigned char PROGMEM chr_003[] = {0x05,0x18,0x37,0x3a,0x37,0x18}; // skull
+const unsigned char PROGMEM chr_004[] = {0x05,0x18,0x24,0x12,0x24,0x18}; // heart
+const unsigned char PROGMEM chr_005[] = {0x05,0x1b,0x2c,0x7b,0x2c,0x1b}; // invader1
+const unsigned char PROGMEM chr_006[] = {0x05,0x5f,0x2d,0x3c,0x2d,0x5f}; // invader2
+const unsigned char PROGMEM chr_007[] = {0x05,0x39,0x6f,0x78,0x6f,0x39}; // invader3
+const unsigned char PROGMEM chr_008[] = {0x05,0x1f,0x2e,0x3f,0x2e,0x1f}; // ghost
+const unsigned char PROGMEM chr_009[] = {0x05,0x3c,0x16,0x1f,0x16,0x3c}; // fox
+const unsigned char PROGMEM chr_010[] = {0x07,0x3e,0x02,0x02,0x00,0x3e,0x28,0x20}; // <LF>
+const unsigned char PROGMEM chr_011[] = {0x05,0x06,0x06,0x7c,0x53,0x3f}; // 2 musical notes
+const unsigned char PROGMEM chr_012[] = {0x04,0x03,0x7f,0x20,0x18}; // musical note
+const unsigned char PROGMEM chr_013[] = {0x07,0x1c,0x22,0x22,0x00,0x3e,0x28,0x16}; // <CR>
+const unsigned char PROGMEM chr_014[] = {0x05,0x60,0x51,0x4f,0x51,0x60}; // glass
+const unsigned char PROGMEM chr_015[] = {0x04,0x3f,0x2f,0x2f,0x7f}; // mobile
+const unsigned char PROGMEM chr_016[] = {0x04,0x07,0x33,0x55,0x98}; // flash
+const unsigned char PROGMEM chr_017[] = {0x05,0x70,0x8e,0x9f,0x8e,0x70}; // lightbulb
+const unsigned char PROGMEM chr_018[] = {0x05,0x08,0x1c,0x2a,0x08,0x08}; // <-
+const unsigned char PROGMEM chr_019[] = {0x05,0x08,0x08,0x2a,0x1c,0x08}; // ->
+const unsigned char PROGMEM chr_020[] = {0x05,0x06,0x09,0x59,0x66,0x70}; // male
+const unsigned char PROGMEM chr_021[] = {0x05,0x30,0x4a,0x4f,0x4a,0x30}; // female
+const unsigned char PROGMEM chr_022[] = {0x07,0x30,0x77,0x4d,0x59,0x4d,0x77,0x30}; // telephone
+const unsigned char PROGMEM chr_023[] = {0x05,0x11,0x12,0x5c,0x12,0x11}; // stick figure
+const unsigned char PROGMEM chr_024[] = {0x07,0x08,0x14,0x2a,0x55,0x2a,0x14,0x08}; // diamond
+const unsigned char PROGMEM chr_025[] = {0x05,0x1c,0x22,0x3a,0x2a,0x1c}; // clock
+const unsigned char PROGMEM chr_026[] = {0x05,0x04,0x3c,0x7e,0x3c,0x04}; // bell
+const unsigned char PROGMEM chr_027[] = {0x05,0x63,0x55,0x49,0x41,0x41}; // sigma
+const unsigned char PROGMEM chr_028[] = {0x05,0x1d,0x23,0x20,0x23,0x1d}; // omega
+const unsigned char PROGMEM chr_029[] = {0x06,0x08,0x1c,0x3e,0x7f,0x63,0x41}; // left
+const unsigned char PROGMEM chr_030[] = {0x06,0x41,0x63,0x7f,0x3e,0x1c,0x08}; // right
+const unsigned char PROGMEM chr_031[] = {0x07,0x0e,0x11,0x0e,0x00,0x7f,0x08,0x37}; // ok
+const unsigned char PROGMEM chr_032[] = {0x03,0x00,0x00,0x00}; // <space>
+const unsigned char PROGMEM chr_033[] = {0x01,0x7d}; // !
+const unsigned char PROGMEM chr_034[] = {0x03,0x60,0x00,0x60}; // "
+const unsigned char PROGMEM chr_035[] = {0x05,0x14,0x7f,0x14,0x7f,0x14}; // #
+const unsigned char PROGMEM chr_036[] = {0x05,0x12,0x2a,0x7f,0x2a,0x24}; // $
+const unsigned char PROGMEM chr_037[] = {0x05,0x62,0x64,0x08,0x13,0x23}; // %
+const unsigned char PROGMEM chr_038[] = {0x05,0x36,0x49,0x35,0x02,0x05}; // &
+const unsigned char PROGMEM chr_039[] = {0x02,0x50,0x60}; // '
+const unsigned char PROGMEM chr_040[] = {0x03,0x1c,0x22,0x41}; // (
+const unsigned char PROGMEM chr_041[] = {0x03,0x41,0x22,0x1c}; // )
+const unsigned char PROGMEM chr_042[] = {0x05,0x22,0x14,0x6b,0x14,0x22}; // *
+const unsigned char PROGMEM chr_043[] = {0x05,0x08,0x08,0x3e,0x08,0x08}; // +
+const unsigned char PROGMEM chr_044[] = {0x02,0x01,0x02}; // ,
+const unsigned char PROGMEM chr_045[] = {0x04,0x08,0x08,0x08,0x08}; // -
+const unsigned char PROGMEM chr_046[] = {0x01,0x01}; // .
+const unsigned char PROGMEM chr_047[] = {0x05,0x03,0x04,0x08,0x10,0x60}; // /
+const unsigned char PROGMEM chr_048[] = {0x04,0x3e,0x41,0x41,0x3e}; // 0
+const unsigned char PROGMEM chr_049[] = {0x03,0x21,0x7f,0x01}; // 1
+const unsigned char PROGMEM chr_050[] = {0x04,0x23,0x45,0x49,0x31}; // 2
+const unsigned char PROGMEM chr_051[] = {0x04,0x22,0x41,0x49,0x36}; // 3
+const unsigned char PROGMEM chr_052[] = {0x04,0x0c,0x14,0x24,0x7f}; // 4
+const unsigned char PROGMEM chr_053[] = {0x04,0x72,0x51,0x51,0x4e}; // 5
+const unsigned char PROGMEM chr_054[] = {0x04,0x1e,0x29,0x49,0x46}; // 6
+const unsigned char PROGMEM chr_055[] = {0x04,0x40,0x47,0x58,0x60}; // 7
+const unsigned char PROGMEM chr_056[] = {0x04,0x36,0x49,0x49,0x36}; // 8
+const unsigned char PROGMEM chr_057[] = {0x04,0x30,0x49,0x4a,0x3c}; // 9
+const unsigned char PROGMEM chr_058[] = {0x01,0x0a}; // :
+const unsigned char PROGMEM chr_059[] = {0x02,0x01,0x0a}; // ;
+const unsigned char PROGMEM chr_060[] = {0x04,0x08,0x14,0x22,0x41}; // <
+const unsigned char PROGMEM chr_061[] = {0x04,0x14,0x14,0x14,0x14}; // =
+const unsigned char PROGMEM chr_062[] = {0x04,0x41,0x22,0x14,0x08}; // >
+const unsigned char PROGMEM chr_063[] = {0x04,0x20,0x45,0x48,0x30}; // ?
+const unsigned char PROGMEM chr_064[] = {0x05,0x26,0x49,0x4f,0x41,0x3e}; // @
+const unsigned char PROGMEM chr_065[] = {0x04,0x3f,0x48,0x48,0x3f}; // A
+const unsigned char PROGMEM chr_066[] = {0x04,0x7f,0x49,0x49,0x36}; // B
+const unsigned char PROGMEM chr_067[] = {0x04,0x3e,0x41,0x41,0x22}; // C
+const unsigned char PROGMEM chr_068[] = {0x04,0x7f,0x41,0x41,0x3e}; // D
+const unsigned char PROGMEM chr_069[] = {0x04,0x7f,0x49,0x49,0x41}; // E
+const unsigned char PROGMEM chr_070[] = {0x04,0x7f,0x48,0x48,0x40}; // F
+const unsigned char PROGMEM chr_071[] = {0x04,0x3e,0x41,0x49,0x2e}; // G
+const unsigned char PROGMEM chr_072[] = {0x04,0x7f,0x08,0x08,0x7f}; // H
+const unsigned char PROGMEM chr_073[] = {0x03,0x41,0x7f,0x41}; // I
+const unsigned char PROGMEM chr_074[] = {0x04,0x02,0x01,0x01,0x7e}; // J
+const unsigned char PROGMEM chr_075[] = {0x04,0x7f,0x08,0x14,0x63}; // K
+const unsigned char PROGMEM chr_076[] = {0x04,0x7f,0x01,0x01,0x01}; // L
+const unsigned char PROGMEM chr_077[] = {0x05,0x7f,0x20,0x18,0x20,0x7f}; // M
+const unsigned char PROGMEM chr_078[] = {0x04,0x7f,0x30,0x0c,0x7f}; // N
+const unsigned char PROGMEM chr_079[] = {0x04,0x3e,0x41,0x41,0x3e}; // O
+const unsigned char PROGMEM chr_080[] = {0x04,0x7f,0x48,0x48,0x30}; // P
+const unsigned char PROGMEM chr_081[] = {0x04,0x3e,0x41,0x42,0x3d}; // Q
+const unsigned char PROGMEM chr_082[] = {0x04,0x7f,0x48,0x4c,0x33}; // R
+const unsigned char PROGMEM chr_083[] = {0x04,0x32,0x49,0x49,0x26}; // S
+const unsigned char PROGMEM chr_084[] = {0x05,0x40,0x40,0x7f,0x40,0x40}; // T
+const unsigned char PROGMEM chr_085[] = {0x04,0x7e,0x01,0x01,0x7e}; // U
+const unsigned char PROGMEM chr_086[] = {0x05,0x70,0x0c,0x03,0x0c,0x70}; // V
+const unsigned char PROGMEM chr_087[] = {0x05,0x7e,0x01,0x0e,0x01,0x7e}; // W
+const unsigned char PROGMEM chr_088[] = {0x05,0x63,0x14,0x08,0x14,0x63}; // X
+const unsigned char PROGMEM chr_089[] = {0x05,0x60,0x10,0x0f,0x10,0x60}; // Y
+const unsigned char PROGMEM chr_090[] = {0x04,0x43,0x4d,0x51,0x61}; // Z
+const unsigned char PROGMEM chr_091[] = {0x03,0x7f,0x41,0x41}; // [
+const unsigned char PROGMEM chr_092[] = {0x05,0x60,0x10,0x08,0x04,0x03}; // backslash
+const unsigned char PROGMEM chr_093[] = {0x03,0x41,0x41,0x7f}; // ]
+const unsigned char PROGMEM chr_094[] = {0x03,0x20,0x40,0x20}; // ^
+const unsigned char PROGMEM chr_095[] = {0x04,0x01,0x01,0x01,0x01}; // _
+const unsigned char PROGMEM chr_096[] = {0x02,0x60,0x10}; // `
+const unsigned char PROGMEM chr_097[] = {0x04,0x02,0x15,0x15,0x0f}; // a
+const unsigned char PROGMEM chr_098[] = {0x04,0x7f,0x11,0x11,0x0e}; // b
+const unsigned char PROGMEM chr_099[] = {0x04,0x0e,0x11,0x11,0x02}; // c
+const unsigned char PROGMEM chr_100[] = {0x04,0x0e,0x11,0x11,0x7f}; // d
+const unsigned char PROGMEM chr_101[] = {0x04,0x0e,0x15,0x15,0x09}; // e
+const unsigned char PROGMEM chr_102[] = {0x04,0x10,0x3f,0x50,0x40}; // f
+const unsigned char PROGMEM chr_103[] = {0x04,0x08,0x15,0x15,0x1e}; // g
+const unsigned char PROGMEM chr_104[] = {0x04,0x7f,0x08,0x08,0x07}; // h
+const unsigned char PROGMEM chr_105[] = {0x01,0x5f}; // i
+const unsigned char PROGMEM chr_106[] = {0x03,0x02,0x01,0x5e}; // j
+const unsigned char PROGMEM chr_107[] = {0x04,0x7f,0x08,0x14,0x23}; // k
+const unsigned char PROGMEM chr_108[] = {0x03,0x41,0x7f,0x01}; // l
+const unsigned char PROGMEM chr_109[] = {0x05,0x1f,0x10,0x0f,0x10,0x0f}; // m
+const unsigned char PROGMEM chr_110[] = {0x04,0x1f,0x10,0x10,0x0f}; // n
+const unsigned char PROGMEM chr_111[] = {0x04,0x0e,0x11,0x11,0x0e}; // o
+const unsigned char PROGMEM chr_112[] = {0x04,0x1f,0x12,0x12,0x0c}; // p
+const unsigned char PROGMEM chr_113[] = {0x04,0x0c,0x12,0x12,0x1f}; // q
+const unsigned char PROGMEM chr_114[] = {0x03,0x0f,0x10,0x10}; // r
+const unsigned char PROGMEM chr_115[] = {0x04,0x09,0x15,0x15,0x12}; // s
+const unsigned char PROGMEM chr_116[] = {0x04,0x10,0x7e,0x11,0x11}; // t
+const unsigned char PROGMEM chr_117[] = {0x04,0x1e,0x01,0x01,0x1f}; // u
+const unsigned char PROGMEM chr_118[] = {0x05,0x18,0x06,0x01,0x06,0x18}; // v
+const unsigned char PROGMEM chr_119[] = {0x05,0x1e,0x01,0x06,0x01,0x1e}; // w
+const unsigned char PROGMEM chr_120[] = {0x05,0x11,0x0a,0x04,0x0a,0x11}; // x
+const unsigned char PROGMEM chr_121[] = {0x04,0x18,0x05,0x05,0x1e}; // y
+const unsigned char PROGMEM chr_122[] = {0x04,0x13,0x15,0x19,0x11}; // z
+const unsigned char PROGMEM chr_123[] = {0x03,0x08,0x36,0x41}; // {
+const unsigned char PROGMEM chr_124[] = {0x01,0xff}; // |
+const unsigned char PROGMEM chr_125[] = {0x03,0x41,0x36,0x08}; // }
+const unsigned char PROGMEM chr_126[] = {0x05,0x08,0x10,0x08,0x04,0x08}; // ~
+
+const glyph_t font[] PROGMEM = {
+	chr_001,
+	chr_002,
+	chr_003,
+	chr_004,
+	chr_005,
+	chr_006,
+	chr_007,
+	chr_008,
+	chr_009,
+	chr_010,
+	chr_011,
+	chr_012,
+	chr_013,
+	chr_014,
+	chr_015,
+	chr_016,
+	chr_017,
+	chr_018,
+	chr_019,
+	chr_020,
+	chr_021,
+	chr_022,
+	chr_023,
+	chr_024,
+	chr_025,
+	chr_026,
+	chr_027,
+	chr_028,
+	chr_029,
+	chr_030,
+	chr_031,
+	chr_032,
+	chr_033,
+	chr_034,
+	chr_035,
+	chr_036,
+	chr_037,
+	chr_038,
+	chr_039,
+	chr_040,
+	chr_041,
+	chr_042,
+	chr_043,
+	chr_044,
+	chr_045,
+	chr_046,
+	chr_047,
+	chr_048,
+	chr_049,
+	chr_050,
+	chr_051,
+	chr_052,
+	chr_053,
+	chr_054,
+	chr_055,
+	chr_056,
+	chr_057,
+	chr_058,
+	chr_059,
+	chr_060,
+	chr_061,
+	chr_062,
+	chr_063,
+	chr_064,
+	chr_065,
+	chr_066,
+	chr_067,
+	chr_068,
+	chr_069,
+	chr_070,
+	chr_071,
+	chr_072,
+	chr_073,
+	chr_074,
+	chr_075,
+	chr_076,
+	chr_077,
+	chr_078,
+	chr_079,
+	chr_080,
+	chr_081,
+	chr_082,
+	chr_083,
+	chr_084,
+	chr_085,
+	chr_086,
+	chr_087,
+	chr_088,
+	chr_089,
+	chr_090,
+	chr_091,
+	chr_092,
+	chr_093,
+	chr_094,
+	chr_095,
+	chr_096,
+	chr_097,
+	chr_098,
+	chr_099,
+	chr_100,
+	chr_101,
+	chr_102,
+	chr_103,
+	chr_104,
+	chr_105,
+	chr_106,
+	chr_107,
+	chr_108,
+	chr_109,
+	chr_110,
+	chr_111,
+	chr_112,
+	chr_113,
+	chr_114,
+	chr_115,
+	chr_116,
+	chr_117,
+	chr_118,
+	chr_119,
+	chr_120,
+	chr_121,
+	chr_122,
+	chr_123,
+	chr_124,
+	chr_125,
+	chr_126
+};
+
+
+
+#endif /* FONT_H_ */
diff --git a/src/main.cc b/src/main.cc
new file mode 100644
index 0000000..c51483d
--- /dev/null
+++ b/src/main.cc
@@ -0,0 +1,217 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/wdt.h>
+#include <util/delay.h>
+#include <stdlib.h>
+
+#include "font2.h"
+
+#define SHUTDOWN_THRESHOLD 2048
+
+volatile uint8_t disp[8];
+
+class System {
+	private:
+		uint16_t want_shutdown;
+	public:
+		System() { want_shutdown = 0; };
+		void loop(void);
+		void shutdown(void);
+};
+
+class Display {
+	public:
+		Display() {};
+		void turn_on(void);
+		void turn_off(void);
+};
+
+System rocket;
+Display display;
+
+void Display::turn_off()
+{
+	TIMSK0 &= ~_BV(TOIE0);
+	PORTB = 0;
+	PORTD = 0;
+}
+
+void Display::turn_on()
+{
+	TIMSK0 |= _BV(TOIE0);
+}
+
+void System::loop()
+{
+	// both buttons are pressed
+	if ((PINC & (_BV(PC3) | _BV(PC7))) == 0) {
+		// naptime!
+		// But not before both buttons have been pressed for
+		// SHUTDOWN_THRESHOLD * 0.256 ms. And then, not before both have
+		// been released, because otherwise we'd go te sleep when
+		// they're pressed and wake up when they're released, which
+		// isn't really the point here.
+
+		if (want_shutdown < SHUTDOWN_THRESHOLD) {
+			want_shutdown++;
+		}
+		else {
+
+			// turn off display to indicate we're about to shut down
+			display.turn_off();
+
+			// wait until both buttons are released
+			while (!((PINC & _BV(PC3)) && (PINC & _BV(PC7)))) ;
+
+			// and some more to debounce the buttons
+			_delay_ms(10);
+
+			// actual naptime
+
+			// enable PCINT on PC3 (PCINT11) and PC7 (PCINT15) for wakeup
+			PCMSK1 |= _BV(PCINT15) | _BV(PCINT11);
+			PCICR |= _BV(PCIE1);
+
+			// go to power-down mode
+			SMCR = _BV(SM1) | _BV(SE);
+			asm("sleep");
+
+			// execution will resume here - disable PCINT again.
+			// Don't disable PCICR, something else might need it.
+			PCMSK1 &= ~(_BV(PCINT15) | _BV(PCINT11));
+
+			// turn on display
+			display.turn_on();
+
+			want_shutdown = 0;
+		}
+	}
+	else {
+		want_shutdown = 0;
+	}
+}
+
+int main (void)
+{
+	// disable ADC to save power
+	PRR |= _BV(PRADC);
+
+	// dito
+	wdt_disable();
+
+	// Ports B and D drive the dot matrix display -> set all as output
+	DDRB = 0xff;
+	DDRD = 0xff;
+	PORTB = 0;
+	PORTD = 0;
+
+	// Enable pull-ups on PC3 and PC7 (button pins)
+	PORTC |= _BV(PC3) | _BV(PC7);
+
+	// Enable 8bit counter with prescaler=8 (-> timer frequency = 1MHz)
+	TCCR0A = _BV(CS01);
+	// raise timer interrupt on counter overflow (-> interrupt frequency = ~4kHz)
+	TIMSK0 = _BV(TOIE0);
+
+	disp[0] = font[8][1];
+	disp[1] = font[8][2];
+	disp[2] = font[8][3];
+	disp[3] = font[8][4];
+	disp[4] = font[8][5];
+	disp[5] = font[8][6];
+	disp[6] = font[8][7];
+	disp[7] = font[8][8];
+
+#if 0
+	// smile!
+	disp[0] = 0x08;
+	disp[1] = 0x04;
+	disp[2] = 0x62;
+	disp[3] = 0x02;
+	disp[4] = 0x02;
+	disp[5] = 0x62;
+	disp[6] = 0x04;
+	disp[7] = 0x08;
+	disp[8] = 0x00;
+	disp[9] = 0x00;
+	disp[10] = 0x00;
+	disp[11] = 0x00;
+	disp[12] = 0x00;
+	disp[13] = 0x00;
+	disp[14] = 0x00;
+	disp[15] = 0x00;
+	disp[16] = 0x28;
+	disp[17] = 0x44;
+	disp[18] = 0x22;
+	disp[19] = 0x02;
+	disp[20] = 0x02;
+	disp[21] = 0x22;
+	disp[22] = 0x44;
+	disp[23] = 0x28;
+	disp[24] = 0x00;
+	disp[25] = 0x00;
+	disp[26] = 0x00;
+	disp[27] = 0x00;
+	disp[28] = 0x00;
+	disp[29] = 0x00;
+	disp[30] = 0x00;
+	disp[31] = 0x00;
+#endif
+
+	sei();
+
+	while (1) {
+		// nothing to do here, go to idle to save power
+		SMCR = _BV(SE);
+		asm("sleep");
+		rocket.loop();
+	}
+
+	return 0;
+}
+
+/*
+ * Draws a single display column. This function should be called at least once
+ * per millisecond.
+ *
+ * Current configuration:
+ * Called every 256 microseconds. The whole display is refreshed every 2048us,
+ * giving a refresh rate of ~500Hz
+ */
+ISR(TIMER0_OVF_vect)
+{
+	static uint8_t active_col = 0;
+	static uint16_t scroll = 0;
+	static uint8_t disp_offset = 0;
+
+	static uint8_t disp_buf[8];
+
+	uint8_t i;
+
+	if (++scroll == 512) {
+		scroll = 0;
+		if (++disp_offset == sizeof(disp)) {
+			disp_offset = 0;
+		}
+
+		for (i = 0; i < 8; i++) {
+			disp_buf[i] = ~disp[(disp_offset + i) % sizeof(disp)];
+		}
+	}
+
+	/*
+	 * To avoid flickering, do not put any code (or expensive index
+	 * calculations) between the following three lines.
+	 */
+	PORTB = 0;
+	PORTD = disp_buf[active_col];
+	PORTB = _BV(active_col);
+
+	if (++active_col == 8)
+		active_col = 0;
+}
+
+ISR(PCINT1_vect)
+{
+	// we use PCINT1 for wakeup, so we should catch it here (and do nothing)
+}
diff --git a/src/modem.c b/src/modem.c
new file mode 100644
index 0000000..dbe9d35
--- /dev/null
+++ b/src/modem.c
@@ -0,0 +1,95 @@
+/* Name: modem.c
+ *
+ * Audio modem for Attiny85 & other AVR chips with modifications
+ *
+ * Author: Jari Tulilahti
+ * Copyright: 2014 Rakettitiede Oy
+ * License: LGPLv3, see COPYING, and COPYING.LESSER -files for more info
+ */
+
+#include "modem.h"
+
+/* Ring buffer global variables */
+static volatile uint8_t modem_buffer_head = 0, modem_buffer_tail = 0;
+static volatile uint8_t modem_buffer[MODEM_BUFFER_SIZE];
+
+/*
+ * Returns number of available bytes in ringbuffer or 0 if empty
+ */
+uint8_t modem_buffer_available() {
+	return modem_buffer_head - modem_buffer_tail;
+}
+
+/*
+ * Store 1 byte in ringbuffer
+ */
+static inline void modem_buffer_put(const uint8_t c) {
+	if (modem_buffer_available() != MODEM_BUFFER_SIZE) { 
+		modem_buffer[modem_buffer_head++ % MODEM_BUFFER_SIZE] = c;
+	} 
+}
+
+/*
+ * Fetch 1 byte from ringbuffer
+ */
+uint8_t modem_buffer_get() {
+	uint8_t b = 0;
+	if (modem_buffer_available() != 0) {
+		b = modem_buffer[modem_buffer_tail++ % MODEM_BUFFER_SIZE];
+	}
+	return b;
+}
+
+/*
+ * Pin Change Interrupt Vector. This is The Modem.
+ */
+ISR(PCINT3_vect) {
+	/* Static variables instead of globals to keep scope inside ISR */
+	static uint8_t modem_bit = 0;
+	static uint8_t modem_bitlen = 0;
+	static uint8_t modem_byte = 0;
+
+	/* Read & Zero Timer/Counter 1 value */
+	uint8_t modem_pulselen = MODEM_TIMER;
+	MODEM_TIMER = 0;
+
+	/*
+	 * Check if we received Start/Sync -pulse.
+	 * Calculate bit signal length middle point from pulse.
+	 * Return from ISR immediately.
+	 */
+	if (modem_pulselen > MODEM_SYNC_LEN) {
+		modem_bitlen = (modem_pulselen >> 2);
+		modem_bit = 0;
+		return;
+	}
+
+	/*
+	 * Shift byte and set high bit according to the pulse length.
+	 * Long pulse = 1, Short pulse = 0
+	 */
+	modem_byte = (modem_byte >> 1) | (modem_pulselen < modem_bitlen ? 0x00 : 0x80);
+
+	/* Check if we received complete byte and store it in ring buffer */
+	if (!(++modem_bit % 0x08)) {
+		modem_buffer_put(modem_byte);
+	}
+}
+
+/*
+ * Start the modem by enabling Pin Change Interrupts & Timer
+ */
+void modem_init()  {
+	/* Modem pin as input */
+	MODEM_DDR &= ~(1 << MODEM_PIN);
+
+	/* Enable Pin Change Interrupts and PCINT for MODEM_PIN */
+	PCMSK1 |= _BV(MODEM_PIN);
+	PCICR |= _BV(PCIE3);
+
+	/* Timer: TCCR1: CS10 and CS11 bits: 8MHz clock with Prescaler 64 = 125kHz timer clock */
+	TCCR1B = _BV(CS11) | _BV(CS10);
+
+	/* Enable interrupts */
+	sei();
+} 
diff --git a/src/modem.h b/src/modem.h
new file mode 100644
index 0000000..d538c22
--- /dev/null
+++ b/src/modem.h
@@ -0,0 +1,24 @@
+/* Name: modem.h
+ * Author: Jari Tulilahti
+ * Copyright: 2014 Rakettitiede Oy
+ * License: LGPLv3, see COPYING, and COPYING.LESSER -files for more info
+ */
+
+#pragma once
+
+#include <avr/interrupt.h>
+#include <stdlib.h>
+
+/* Modem ring buffer size must be power of 2 */
+#define MODEM_BUFFER_SIZE	4
+
+/* Modem defines */
+#define MODEM_SYNC_LEN		42
+#define MODEM_TIMER		TCNT1L
+#define MODEM_PIN 		PCINT24
+#define MODEM_DDR		DDRA
+
+/* Public funtions */
+uint8_t modem_buffer_available();
+uint8_t modem_buffer_get();
+void modem_init();
-- 
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