--- /dev/null
+# Hey Emacs, this is a -*- makefile -*-
+
+# AVR-GCC Makefile template, derived from the WinAVR template (which
+# is public domain), believed to be neutral to any flavor of "make"
+# (GNU make, BSD make, SysV make)
+#
+# Adaptations by Jon Langseth <jon.langseth AT lilug.no>
+# This modified template is placed in the public domain like the original.
+#
+
+
+# Target name and MCU setup -------------------------------------------------
+
+TARGET = syncgen
+
+MCU = attiny85
+
+# Processor frequency.
+# This will define a symbol, F_CPU, in all source code files equal to the
+# processor frequency. You can then use this symbol in your source code to
+# calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+# automatically to create a 32-bit value in your source code.
+# Typical values are:
+# F_CPU = 1000000
+# F_CPU = 1843200
+# F_CPU = 2000000
+# F_CPU = 3686400
+# F_CPU = 4000000
+# F_CPU = 7372800
+# F_CPU = 8000000
+# F_CPU = 11059200
+# F_CPU = 14745600
+# F_CPU = 16000000
+# F_CPU = 18432000
+# F_CPU = 20000000
+F_CPU = 20000000
+
+# Fuse-bits. Recommended tool: http://www.engbedded.com/fusecalc/
+FUSE_LOW = 0xCF
+FUSE_HIGH = 0xDF
+FUSE_EXT = 0xFF
+# Have had problems with efuse suggested by fusecalc, must check :P
+
+# Source files to compile ---------------------------------------------------
+
+# List C source files here. (C dependencies are automatically generated.)
+SRC = main.c
+
+# List Assembler source files here.
+# Make them always end in a capital .S.
+ASRC =
+
+# Optimization level, can be [0, 1, 2, 3, s].
+# 0 = turn off optimization. s = optimize for size.
+# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
+OPT = 1
+
+# Output formats and debug format -------------------------------------------
+
+# Output format. (can be srec, ihex, binary)
+FORMAT = ihex
+
+# Debugging format.
+# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.
+# AVR (extended) COFF requires stabs, plus an avr-objcopy run.
+DEBUG = dwarf-2
+
+# Command names (and paths/parameters to them...) ---------------------------
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+SIZE = avr-size
+NM = avr-nm
+AVRDUDE = avrdude
+REMOVE = rm -f
+MV = mv -f
+
+# Compiler flag to set the C Standard level.
+# c89 - "ANSI" C
+# gnu89 - c89 plus GCC extensions
+# c99 - ISO C99 standard (not yet fully implemented)
+# gnu99 - c99 plus GCC extensions
+CSTANDARD = -std=gnu99
+
+# Place -D or -U options here
+CDEFS = -DF_CPU=$(F_CPU)UL
+
+# Place -I options here
+CINCS =
+
+CFLAGS = -g$(CDEBUG) $(CDEFS) $(CINCS) -O$(OPT) $(CSTANDARD)
+CFLAGS += -funsigned-char
+CFLAGS += -funsigned-bitfields
+CFLAGS += -fpack-struct
+CFLAGS += -fshort-enums
+CFLAGS += -Wall
+CFLAGS += -Wstrict-prototypes
+#CFLAGS += -mshort-calls
+#CFLAGS += -fno-unit-at-a-time
+#CFLAGS += -Wundef
+#CFLAGS += -Wunreachable-code
+#CFLAGS += -Wsign-compare
+
+#ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs
+
+
+#Additional libraries.
+
+MATH_LIB = -lm
+
+# Minimalistic printf version
+PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
+
+# Floating point printf version (requires MATH_LIB = -lm)
+PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
+
+# If this is left blank, then it will use the Standard printf version.
+PRINTF_LIB =
+#PRINTF_LIB = $(PRINTF_LIB_MIN)
+#PRINTF_LIB = $(PRINTF_LIB_FLOAT)
+
+
+# Minimalistic scanf version
+SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
+
+# Floating point + %[ scanf version (requires MATH_LIB = -lm)
+SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
+
+# If this is left blank, then it will use the Standard scanf version.
+SCANF_LIB =
+#SCANF_LIB = $(SCANF_LIB_MIN)
+#SCANF_LIB = $(SCANF_LIB_FLOAT)
+
+
+# External memory options
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# used for variables (.data/.bss) and heap (malloc()).
+#EXTMEMOPTS = -Wl,--section-start,.data=0x801100,--defsym=__heap_end=0x80ffff
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# only used for heap (malloc()).
+#EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff
+
+EXTMEMOPTS =
+
+
+#LDMAP = $(LDFLAGS) -Wl,-Map=$(TARGET).map,--cref
+LDFLAGS = $(EXTMEMOPTS) $(LDMAP) $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
+
+
+# Programming support using avrdude. Settings and variables.
+
+AVRDUDE_PROGRAMMER = usbtiny
+AVRDUDE_PORT = usb
+
+AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
+#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
+
+
+# Uncomment the following if you want avrdude's erase cycle counter.
+# Note that this counter needs to be initialized first using -Yn,
+# see avrdude manual.
+#AVRDUDE_ERASE_COUNTER = -y
+
+# Uncomment the following if you do /not/ wish a verification to be
+# performed after programming the device.
+#AVRDUDE_NO_VERIFY = -V
+
+# Increase verbosity level. Please use this when submitting bug
+# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
+# to submit bug reports.
+#AVRDUDE_VERBOSE = -v -v
+
+AVRDUDE_BASIC = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
+AVRDUDE_FLAGS = $(AVRDUDE_BASIC) $(AVRDUDE_NO_VERIFY) $(AVRDUDE_VERBOSE) $(AVRDUDE_ERASE_COUNTER)
+
+
+# Define all object files.
+OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)
+
+# Define all listing files.
+LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)
+
+# Combine all necessary flags and optional flags.
+# Add target processor to flags.
+ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS)
+ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
+
+
+# Default target.
+all: build
+
+build: elf hex eep size
+
+elf: $(TARGET).elf
+hex: $(TARGET).hex
+eep: $(TARGET).eep
+lss: $(TARGET).lss
+sym: $(TARGET).sym
+
+# Display size of file.
+HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
+ELFSIZE = $(SIZE) --mcu=$(MCU) --format=avr $(TARGET).elf
+
+size:
+ @echo
+ $(SIZE) --mcu=$(MCU) --format=avr $(TARGET).elf
+ $(SIZE) --target=$(FORMAT) $(TARGET).hex
+
+# Program the device.
+program: $(TARGET).hex $(TARGET).eep
+ $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
+
+
+# make fuseread can be used to test programmer connectivity, and naturally to verify fuses..
+fuseread:
+ $(AVRDUDE) $(AVRDUDE_BASIC) -q -U lfuse:r:-:h -U hfuse:r:-:h -U efuse:r:-:h
+
+FUSES =
+ifdef FUSE_EXT
+FUSES += -U efuse:w:$(FUSE_EXT):m
+endif
+FUSES += -U hfuse:w:$(FUSE_HIGH):m
+FUSES += -U lfuse:w:$(FUSE_LOW):m
+
+fusebits: $(TARGET).hex
+ $(AVRDUDE) $(AVRDUDE_BASIC) $(FUSES)
+# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
+COFFCONVERT=$(OBJCOPY) --debugging \
+--change-section-address .data-0x800000 \
+--change-section-address .bss-0x800000 \
+--change-section-address .noinit-0x800000 \
+--change-section-address .eeprom-0x810000
+
+
+coff: $(TARGET).elf
+ $(COFFCONVERT) -O coff-avr $(TARGET).elf $(TARGET).cof
+
+
+extcoff: $(TARGET).elf
+ $(COFFCONVERT) -O coff-ext-avr $(TARGET).elf $(TARGET).cof
+
+
+.SUFFIXES: .elf .hex .eep .lss .sym
+
+.elf.hex:
+ $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+
+.elf.eep:
+ -$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+ --change-section-lma .eeprom=0 -O $(FORMAT) $< $@
+
+# Create extended listing file from ELF output file.
+.elf.lss:
+ $(OBJDUMP) -h -S $< > $@
+
+# Create a symbol table from ELF output file.
+.elf.sym:
+ $(NM) -n $< > $@
+
+
+
+# Link: create ELF output file from object files.
+$(TARGET).elf: $(OBJ)
+ $(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)
+
+
+# Compile: create object files from C source files.
+.c.o:
+ $(CC) -c $(ALL_CFLAGS) $< -o $@
+
+
+# Compile: create assembler files from C source files.
+.c.s:
+ $(CC) -S $(ALL_CFLAGS) $< -o $@
+
+
+# Assemble: create object files from assembler source files.
+.S.o:
+ $(CC) -c $(ALL_ASFLAGS) $< -o $@
+
+
+
+# Target: clean project.
+clean:
+ $(REMOVE) $(TARGET).hex $(TARGET).eep $(TARGET).cof $(TARGET).elf \
+ $(TARGET).map $(TARGET).sym $(TARGET).lss \
+ $(OBJ) $(LST) $(SRC:.c=.s) $(SRC:.c=.d)
+
+# Name of this Makefile (used for "make depend").
+MAKEFILE = Makefile
+
+depend:
+ if grep '^# DO NOT DELETE' $(MAKEFILE) >/dev/null; \
+ then \
+ sed -e '/^# DO NOT DELETE/,$$d' $(MAKEFILE) > \
+ $(MAKEFILE).$$$$ && \
+ $(MV) $(MAKEFILE).$$$$ $(MAKEFILE); \
+ fi
+ echo '# DO NOT DELETE THIS LINE -- make depend depends on it.' \
+ >> $(MAKEFILE); \
+ $(CC) -M -mmcu=$(MCU) $(CDEFS) $(CINCS) $(SRC) $(ASRC) >> $(MAKEFILE)
+
+.PHONY: all build elf hex eep lss sym program coff extcoff clean depend
+
--- /dev/null
+#ifndef _IMG_LOGO_H
+#define _IMG_LOGO_H
+const uint8_t testimg_width = 64;
+const uint8_t testimg_height = 50;
+uint8_t testimg_data[] = {
+ 0b00000000, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b00000000,
+ 0b00001111, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b11110000,
+ 0b00011000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00011000,
+ 0b00010111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11101000,
+ 0b00010100, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00101000,
+ 0b00010100, 0b00000000, 0b00110000, 0b11000000, 0b01101111, 0b11100000, 0b00000000, 0b00101000,
+ 0b00100100, 0b00000000, 0b00110000, 0b11000000, 0b01101100, 0b11110000, 0b00000000, 0b00100100,
+ 0b00100100, 0b00000000, 0b01111000, 0b01100000, 0b11001100, 0b00011000, 0b00000000, 0b00100100,
+ 0b00100100, 0b00000000, 0b01111000, 0b01100000, 0b11001100, 0b00011000, 0b00000000, 0b00100100,
+ 0b00100100, 0b00000000, 0b11001100, 0b01100000, 0b11001100, 0b00011000, 0b00000000, 0b00100100,
+ 0b00100100, 0b00000000, 0b11001100, 0b00110001, 0b10001100, 0b00011000, 0b00000000, 0b00100100,
+ 0b00100100, 0b00000000, 0b10000100, 0b00110001, 0b10001100, 0b11110000, 0b00000000, 0b00100100,
+ 0b01001000, 0b00000001, 0b10000110, 0b00110001, 0b10001111, 0b11000000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000001, 0b11111110, 0b00011011, 0b00001100, 0b01100000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000011, 0b00000011, 0b00011011, 0b00001100, 0b01100000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000011, 0b00000011, 0b00011011, 0b00001100, 0b00110000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000011, 0b00000011, 0b00001010, 0b00001100, 0b00011000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000110, 0b00000001, 0b10001110, 0b00001100, 0b00011000, 0b00000000, 0b00010010,
+ 0b01001001, 0b11100110, 0b00000001, 0b10001110, 0b01001100, 0b00001101, 0b10000000, 0b00010010,
+ 0b01001001, 0b00000000, 0b00000000, 0b00000000, 0b01000000, 0b00001001, 0b00000000, 0b00010010,
+ 0b01001001, 0b00011101, 0b11101110, 0b11100110, 0b01110010, 0b01011111, 0b10110011, 0b10010010,
+ 0b01001001, 0b11110000, 0b00101001, 0b00101001, 0b01001010, 0b01001001, 0b01001010, 0b00010010,
+ 0b01001001, 0b00010001, 0b11101001, 0b00101111, 0b01001010, 0b01001001, 0b01111010, 0b00010010,
+ 0b01001001, 0b00010001, 0b00101001, 0b00101000, 0b01001010, 0b01001001, 0b01000010, 0b00010010,
+ 0b01001001, 0b00010001, 0b11101001, 0b00100111, 0b01110011, 0b11001001, 0b00111010, 0b00010010,
+ 0b01001000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000000, 0b11111000, 0b00011111, 0b00001111, 0b11000000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000011, 0b10001100, 0b00110001, 0b00001100, 0b01100000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000011, 0b00000110, 0b00110000, 0b00001100, 0b00110000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000110, 0b00000011, 0b00110000, 0b00001100, 0b00011000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000110, 0b00000011, 0b00110000, 0b00001100, 0b00011000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000110, 0b00000011, 0b00011100, 0b00001100, 0b00011000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000110, 0b00000011, 0b00000111, 0b00001100, 0b00011000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000110, 0b00000011, 0b00000001, 0b10001100, 0b00011000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000110, 0b00000011, 0b00000001, 0b10001100, 0b00011000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000011, 0b00000110, 0b00000001, 0b10001100, 0b00110000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000011, 0b10001100, 0b00100011, 0b00001100, 0b01100000, 0b00000000, 0b00010010,
+ 0b01001000, 0b00000000, 0b11111000, 0b00111110, 0b00001111, 0b11001110, 0b00000111, 0b00010010,
+ 0b00100100, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00010001, 0b00001000, 0b10100100,
+ 0b00100100, 0b00000000, 0b00000000, 0b00000000, 0b00010001, 0b00010001, 0b00001000, 0b10100100,
+ 0b00100100, 0b00000000, 0b00000000, 0b00000000, 0b00010001, 0b00010001, 0b00001000, 0b10100100,
+ 0b00100100, 0b00000000, 0b00000000, 0b00000000, 0b00001010, 0b00010001, 0b00001000, 0b10100100,
+ 0b00100100, 0b00000000, 0b00000000, 0b00000000, 0b00001010, 0b00010001, 0b00001000, 0b10100100,
+ 0b00100100, 0b00000000, 0b00000000, 0b00000000, 0b00001010, 0b00010001, 0b00101000, 0b10100100,
+ 0b00010100, 0b00000000, 0b00000000, 0b00000000, 0b00000100, 0b00001110, 0b00100111, 0b00101000,
+ 0b00010100, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00101000,
+ 0b00010111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11101000,
+ 0b00011000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00011000,
+ 0b00001111, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b11110000,
+ 0b00000000, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b11111111, 0b00000000,
+};
+#endif
--- /dev/null
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#define ZERO PORTB=0b000
+#define BLACK PORTB=0b001
+
+// -----..----- ^
+// | | |
+// -| RST VCC |-`
+// | |
+// .--| X1 PB2 |-
+// [ ] | | 470R
+// '--| X2 PB1 |--^v^v-.
+// | | |----> VidOut
+// .--| GND PB0 |--^v^v-'
+// | | | 1kR
+//----- ------------
+/*
+uint8_t testimg_data[] =
+{
+ 0b11111100, 0b00000000, 0b00000011, 0b10000000, 0b00000000, 0b00000000,
+ 0b11111100, 0b00000000, 0b00000011, 0b10000000, 0b00000000, 0b00000000,
+ 0b11111100, 0b00000000, 0b00000011, 0b10000000, 0b00000000, 0b00000000,
+ 0b11111100, 0b00000000, 0b00000011, 0b10000000, 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000,
+ 0b11111100, 0b00000000, 0b00000011, 0b11000000, 0b00000000, 0b00000000,
+ 0b11111100, 0b00000000, 0b00000011, 0b11000000, 0b00000000, 0b00000000,
+ 0b11111100, 0b00000000, 0b00000011, 0b11000000, 0b00000000, 0b00000000,
+ 0b11111100, 0b00000000, 0b00000011, 0b11000000, 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000,
+ 0b00110000, 0b00000000, 0b00000011, 0b01100000, 0b00000000, 0b00000000,
+ 0b00110000, 0b00000000, 0b00000011, 0b01100000, 0b00000000, 0b00000000,
+ 0b00110000, 0b00000000, 0b00000011, 0b01100000, 0b00000000, 0b00000000,
+ 0b00110000, 0b00000000, 0b00000011, 0b01100000, 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000,
+ 0b00110000, 0b00000000, 0b00000011, 0b01100000, 0b00000000, 0b00000000,
+ 0b00110000, 0b00000000, 0b00000011, 0b01100000, 0b00000000, 0b00000000,
+ 0b00110000, 0b00000000, 0b00000011, 0b01100000, 0b00000000, 0b00000000,
+ 0b00110000, 0b00000000, 0b00000011, 0b01100000, 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000,
+ 0b00110010, 0b11001101, 0b10011011, 0b01101111, 0b00110000, 0b00000000,
+ 0b00110010, 0b11001101, 0b10011011, 0b01101111, 0b00110000, 0b00000000,
+ 0b00110010, 0b11001101, 0b10011011, 0b01101111, 0b00110000, 0b00000000,
+ 0b00110010, 0b11001101, 0b10011011, 0b01101111, 0b00110000, 0b00000000,
+ 0b00000000, 0b00000000,
+ 0b00110100, 0b11001101, 0b10011011, 0b01101111, 0b00110000, 0b00000000,
+ 0b00110100, 0b11001101, 0b10011011, 0b01101111, 0b00110000, 0b00000000,
+ 0b00110100, 0b11001101, 0b10011011, 0b01101111, 0b00110000, 0b00000000,
+ 0b00110100, 0b11001101, 0b10011011, 0b01101111, 0b00110000, 0b00000000,
+ 0b00000000, 0b00000000,
+ 0b00110000, 0b11101100, 0b11110011, 0b11011001, 0b10110000, 0b01101100,
+ 0b00110000, 0b11101100, 0b11110011, 0b11011001, 0b10110000, 0b01101100,
+ 0b00110000, 0b11101100, 0b11110011, 0b11011001, 0b10110000, 0b01101100,
+ 0b00110000, 0b11101100, 0b11110011, 0b11011001, 0b10110000, 0b01101100,
+ 0b01101100, 0b01101100,
+ 0b00110000, 0b11101100, 0b11110011, 0b11011001, 0b10110000, 0b10010010,
+ 0b00110000, 0b11101100, 0b11110011, 0b11011001, 0b10110000, 0b10010010,
+ 0b00110000, 0b11101100, 0b11110011, 0b11011001, 0b10110000, 0b10010010,
+ 0b00110000, 0b11101100, 0b11110011, 0b11011001, 0b10110000, 0b10010010,
+ 0b10010010, 0b10010010,
+ 0b00110110, 0b11111100, 0b01100011, 0b00011111, 0b10110000, 0b10000010,
+ 0b00110110, 0b11111100, 0b01100011, 0b00011111, 0b10110000, 0b10000010,
+ 0b00110110, 0b11111100, 0b01100011, 0b00011111, 0b10110000, 0b10000010,
+ 0b00110110, 0b11111100, 0b01100011, 0b00011111, 0b10110000, 0b10000010,
+ 0b10000010, 0b10000010,
+ 0b00110110, 0b11111100, 0b01100011, 0b00011111, 0b10110000, 0b01000100,
+ 0b00110110, 0b11111100, 0b01100011, 0b00011111, 0b10110000, 0b01000100,
+ 0b00110110, 0b11111100, 0b01100011, 0b00011111, 0b10110000, 0b01000100,
+ 0b00110110, 0b11111100, 0b01100011, 0b00011111, 0b10110000, 0b01000100,
+ 0b01000100, 0b01000100,
+ 0b00110110, 0b11011100, 0b01100011, 0b00011001, 0b10110000, 0b00101000,
+ 0b00110110, 0b11011100, 0b01100011, 0b00011001, 0b10110000, 0b00101000,
+ 0b00110110, 0b11011100, 0b01100011, 0b00011001, 0b10110000, 0b00101000,
+ 0b00110110, 0b11011100, 0b01100011, 0b00011001, 0b10110000, 0b00101000,
+ 0b00101000, 0b00101000,
+ 0b00110110, 0b11011100, 0b01100011, 0b00011001, 0b10110000, 0b00010000,
+ 0b00110110, 0b11011100, 0b01100011, 0b00011001, 0b10110000, 0b00010000,
+ 0b00110110, 0b11011100, 0b01100011, 0b00011001, 0b10110000, 0b00010000,
+ 0b00110110, 0b11011100, 0b01100011, 0b00011001, 0b10110000, 0b00010000,
+ 0b00010000, 0b00010000,
+ 0b00110110, 0b11001100, 0b01100011, 0b00011001, 0b10111111, 0b00000000,
+ 0b00110110, 0b11001100, 0b01100011, 0b00011001, 0b10111111, 0b00000000,
+ 0b00110110, 0b11001100, 0b01100011, 0b00011001, 0b10111111, 0b00000000,
+ 0b00110110, 0b11001100, 0b01100011, 0b00011001, 0b10111111, 0b00000000,
+ 0b00000000, 0b00000000,
+ 0b00110110, 0b11001100, 0b01100011, 0b00011001, 0b10111111, 0b00000000,
+ 0b00110110, 0b11001100, 0b01100011, 0b00011001, 0b10111111, 0b00000000,
+ 0b00110110, 0b11001100, 0b01100011, 0b00011001, 0b10111111, 0b00000000,
+ 0b00110110, 0b11001100, 0b01100011, 0b00011001, 0b10111111, 0b00000000,
+ 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000,
+ 0b00000000, 0b00000000,
+};
+
+#define testimg_height 15
+#define testimg_width 208
+
+#define START1 100
+#define END1 115
+#define START2 412
+#define END2 427
+*/
+
+#include "avrosdlogo.h"
+volatile int rasterline;
+volatile uint16_t line;
+
+volatile uint8_t hres;
+volatile int renderLine;
+int stretch;
+
+void asm_render_line( void ) {
+ __asm__ __volatile__ (
+ ".macro outbit p" "\n\t"
+ "BST __tmp_reg__,7" "\n\t" // Store bit 7 to T
+ "BLD r16,1" "\n\t" // Load bit T into r16 bit number 4
+ "OUT \\p,r16" "\n\t" // Send contents of r16 to %[port]
+ "NOP" "\n\t"
+ ".endm" "\n\t"
+
+ "ADD r26,r28" "\n\t" // Add register Y to register X, low part
+ "ADC r27,r29" "\n\t" // Add high Y to X with carry from low part
+
+ "IN r16,%[port]" "\n\t" // Save port content to register 16
+ "RJMP start_line" "\n\t"
+
+ "loop_byte:" "\n\t" // Notice that in the macro we always use bit 7 and left-shift
+ "BST __tmp_reg__,6" "\n\t" // Here we use bit 6 without left-shift to output bit 0
+ "BLD r16,1" "\n\t" // of each byte (except the last bit on the line)
+ "OUT %[port],r16" "\n\t" // We do not have time for a left-shift, teh "extra cycle" was used for "dec-branch"
+ "NOP" "\n\t"
+
+ "start_line:" "\n\t"
+ "LD __tmp_reg__,X+" "\n\t" // Load from address pointed to by X into temporary register, then increment X-pointer
+
+ "outbit %[port]" "\n\t" // Output bit 7 using Macro
+ "LSL __tmp_reg__" "\n\t" // Left-shift for next bit
+ "outbit %[port]" "\n\t" // Output bit 6 using Macro
+ "LSL __tmp_reg__" "\n\t" // Left-shift for next bit
+ "outbit %[port]" "\n\t" // Output bit 5 using Macro
+ "LSL __tmp_reg__" "\n\t" // Left-shift for next bit
+ "outbit %[port]" "\n\t" // Output bit 4 using Macro
+ "LSL __tmp_reg__" "\n\t" // Left-shift for next bit
+ "outbit %[port]" "\n\t" // Output bit 3 using Macro
+ "LSL __tmp_reg__" "\n\t" // Left-shift for next bit
+ "outbit %[port]" "\n\t" // Output bit 2 using Macro
+ "LSL __tmp_reg__" "\n\t" // Left-shift for next bit
+ "outbit %[port]" "\n\t" // Output bit 1 using Macro
+
+ "DEC %[hres]" "\n\t" // Decrement num-bytes-remaining-in-resolution
+ "BRNE loop_byte" "\n\t" // Branch to loop6 if %[hres] != zero
+
+ "LSL __tmp_reg__" "\n\t" // Left-shift for last bit on the line
+ "outbit %[port]" "\n\t" // Output bit 0 using Macro.
+
+ "CBI %[port],1" "\n\t" // Clear our "display bit" to ensure we end on black
+
+ :
+ : [port] "i" (_SFR_IO_ADDR(PORTB)),
+ "x" (testimg_data),
+ "y" (renderLine),
+ [hres] "d" (hres)
+ );
+}
+
+void hsync(void)
+{
+ line++;
+ ZERO; _delay_us(4); // sync
+ BLACK; _delay_us(8); // Back porch
+}
+
+void vsync(uint8_t odd_even)
+{
+ uint8_t a,b;
+ cli();
+
+ // Pre-equalization pulses
+ b = odd_even ? 6 : 5;
+ for(a=0; a<b ; a++) // 6x short sync
+ {
+ ZERO;
+ _delay_us(2);
+
+ BLACK;
+ _delay_us(30);
+
+ }
+
+ // VSYNC
+ for(a=0; a<5 ; a++) // 5x long sync
+ {
+
+ ZERO;
+ _delay_us(30);
+
+ BLACK;
+ _delay_us(2);
+
+ }
+
+ // Post-equalization pulses
+ b = odd_even ? 5 : 4;
+ for(a=0; a<b ; a++) // 5x short sync
+ {
+ ZERO;
+ _delay_us(2);
+
+ BLACK;
+ _delay_us(30);
+
+ }
+ line = odd_even ? 5 : 317;
+ renderLine = 0;
+
+ sei();
+}
+
+ISR (TIMER0_COMPA_vect)
+{
+ if(line == 310) vsync(0);
+ else if(line == 622) vsync(1);
+ else
+ {
+ hsync();
+ int t_line = line;
+ t_line = ( line > 312 ) ? line - 312 : line;
+
+ if ( t_line > 118 && t_line < 118 + (2*testimg_height) )
+ {
+ _delay_us(12);
+ asm_render_line();
+
+ if( !stretch )
+ {
+ stretch = 1;
+ renderLine += hres;
+ if ( renderLine > ((testimg_height*hres)-1) ) renderLine = 0;
+ } else stretch--;
+ }
+ }
+ return;
+}
+
+int main(void)
+{
+ rasterline = 0;
+ line = 0;
+
+ hres = testimg_width / 8;
+
+ DDRB =0b111;
+
+ TCCR0A |= (1<<WGM01)|(0<<WGM00);
+ TCCR0B |= (0<<WGM02)|(0<<CS02)|(1<<CS01)|(0<<CS00);
+ TIMSK |= (1<<OCIE0A);
+ OCR0A = 159;
+
+ sei();
+
+ // Here, we continue to do nothing...
+ while(1);
+}
git.defcon.no / avrfbosd / commitdiff