Browse Source

o add avr sdcard poc

optixx 15 years ago
parent
commit
9a40d078dd

+ 146 - 0
poc/avr_sdcard/.cproject

@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?fileVersion 4.0.0?>
+
+<cproject>
+<storageModule moduleId="org.eclipse.cdt.core.settings">
+<cconfiguration id="de.innot.avreclipse.toolchain.winavr.base.2035060822">
+<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="de.innot.avreclipse.toolchain.winavr.base.2035060822" moduleId="org.eclipse.cdt.core.settings" name="AVR-GCC Toolchain">
+<externalSettings/>
+<extensions>
+<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+</extensions>
+</storageModule>
+<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+<configuration artifactName="avr_sdcard" buildProperties="" id="de.innot.avreclipse.toolchain.winavr.base.2035060822" name="AVR-GCC Toolchain" parent="org.eclipse.cdt.build.core.emptycfg">
+<folderInfo id="de.innot.avreclipse.toolchain.winavr.base.2035060822.282771302" name="/" resourcePath="">
+<toolChain id="de.innot.avreclipse.toolchain.winavr.base.16194883" name="de.innot.avreclipse.toolchain.winavr.base" superClass="de.innot.avreclipse.toolchain.winavr.base">
+<option id="de.innot.avreclipse.toolchain.options.toolchain.objcopy.flash.1195662457" name="Generate HEX file for Flash memory" superClass="de.innot.avreclipse.toolchain.options.toolchain.objcopy.flash"/>
+<option id="de.innot.avreclipse.toolchain.options.toolchain.objcopy.eeprom.49068298" name="Generate HEX file for EEPROM" superClass="de.innot.avreclipse.toolchain.options.toolchain.objcopy.eeprom"/>
+<option id="de.innot.avreclipse.toolchain.options.toolchain.objdump.1993007720" name="Generate Extended Listing (Source + generated Assembler)" superClass="de.innot.avreclipse.toolchain.options.toolchain.objdump"/>
+<option id="de.innot.avreclipse.toolchain.options.toolchain.size.1233071154" name="Print Size" superClass="de.innot.avreclipse.toolchain.options.toolchain.size"/>
+<option id="de.innot.avreclipse.toolchain.options.toolchain.avrdude.293193980" name="AVRDude" superClass="de.innot.avreclipse.toolchain.options.toolchain.avrdude"/>
+<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="de.innot.avreclipse.targetplatform.avr.1550275333" name="AVR Cross-Target" osList="all" superClass="de.innot.avreclipse.targetplatform.avr"/>
+<builder id="de.innot.avreclipse.target.builder.winavr.base.1575493487" managedBuildOn="false" name="AVR GNU Make Builder.AVR-GCC Toolchain" superClass="de.innot.avreclipse.target.builder.winavr.base"/>
+<tool id="de.innot.avreclipse.tool.assembler.winavr.base.808616062" name="AVR Assembler" superClass="de.innot.avreclipse.tool.assembler.winavr.base"/>
+<tool id="de.innot.avreclipse.tool.compiler.winavr.base.1485630042" name="AVR Compiler" superClass="de.innot.avreclipse.tool.compiler.winavr.base"/>
+<tool id="de.innot.avreclipse.tool.cppcompiler.base.1612651008" name="AVR C++ Compiler" superClass="de.innot.avreclipse.tool.cppcompiler.base"/>
+<tool id="de.innot.avreclipse.tool.linker.winavr.base.2038089079" name="AVR C Linker" superClass="de.innot.avreclipse.tool.linker.winavr.base"/>
+<tool id="de.innot.avreclipse.tool.cpplinker.base.647452731" name="AVR C++ Linker" superClass="de.innot.avreclipse.tool.cpplinker.base"/>
+<tool id="de.innot.avreclipse.tool.archiver.winavr.base.875927857" name="AVR Archiver" superClass="de.innot.avreclipse.tool.archiver.winavr.base"/>
+</toolChain>
+</folderInfo>
+</configuration>
+</storageModule>
+<storageModule moduleId="scannerConfiguration">
+<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="org.eclipse.cdt.make.core.GCCStandardMakePerProjectProfile"/>
+<profile id="org.eclipse.cdt.make.core.GCCStandardMakePerProjectProfile">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/${specs_file}" command="gcc" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="org.eclipse.cdt.make.core.GCCStandardMakePerFileProfile">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="makefileGenerator">
+<runAction arguments="-f ${project_name}_scd.mk" command="make" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="org.eclipse.cdt.managedbuilder.core.GCCManagedMakePerProjectProfile">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/${specs_file}" command="gcc" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="org.eclipse.cdt.managedbuilder.core.GCCManagedMakePerProjectProfileCPP">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/specs.cpp" command="g++" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="org.eclipse.cdt.managedbuilder.core.GCCManagedMakePerProjectProfileC">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/specs.c" command="gcc" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="org.eclipse.cdt.managedbuilder.core.GCCWinManagedMakePerProjectProfile">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/${specs_file}" command="gcc" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="org.eclipse.cdt.managedbuilder.core.GCCWinManagedMakePerProjectProfileCPP">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/specs.cpp" command="g++" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="org.eclipse.cdt.managedbuilder.core.GCCWinManagedMakePerProjectProfileC">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/specs.c" command="gcc" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="de.innot.avreclipse.core.AVRGCCManagedMakePerProjectProfileC">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/specs.c" command="avr-gcc" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+<profile id="de.innot.avreclipse.core.AVRGCCManagedMakePerProjectProfileCPP">
+<buildOutputProvider>
+<openAction enabled="true" filePath=""/>
+<parser enabled="true"/>
+</buildOutputProvider>
+<scannerInfoProvider id="specsFile">
+<runAction arguments="-E -P -v -dD ${plugin_state_location}/specs.cpp" command="avr-g++" useDefault="true"/>
+<parser enabled="true"/>
+</scannerInfoProvider>
+</profile>
+</storageModule>
+<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+</cconfiguration>
+</storageModule>
+<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+<project id="avr_sdcard.null.452039319" name="avr_sdcard"/>
+</storageModule>
+</cproject>

+ 78 - 0
poc/avr_sdcard/.project

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>avr_sdcard</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+				<dictionary>
+					<key>?name?</key>
+					<value></value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.append_environment</key>
+					<value>true</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.autoBuildTarget</key>
+					<value>all</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.buildArguments</key>
+					<value></value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.buildCommand</key>
+					<value>make</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.cleanBuildTarget</key>
+					<value>clean</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.contents</key>
+					<value>org.eclipse.cdt.make.core.activeConfigSettings</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.enableAutoBuild</key>
+					<value>false</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.enableCleanBuild</key>
+					<value>true</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.enableFullBuild</key>
+					<value>true</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.fullBuildTarget</key>
+					<value>all</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.stopOnError</key>
+					<value>true</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.useDefaultBuildCmd</key>
+					<value>true</value>
+				</dictionary>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>de.innot.avreclipse.core.avrnature</nature>
+	</natures>
+</projectDescription>

+ 453 - 0
poc/avr_sdcard/Makefile

@@ -0,0 +1,453 @@
+# Hey Emacs, this is a -*- makefile -*-
+#
+# WinAVR makefile written by Eric B. Weddington, Jörg Wunsch, et al.
+# Released to the Public Domain
+# Please read the make user manual!
+#
+# Additional material for this makefile was submitted by:
+#  Tim Henigan
+#  Peter Fleury
+#  Reiner Patommel
+#  Sander Pool
+#  Frederik Rouleau
+#  Markus Pfaff
+#
+# On command line:
+#
+# make all = Make software.
+#
+# make clean = Clean out built project files.
+#
+# make coff = Convert ELF to AVR COFF (for use with AVR Studio 3.x or VMLAB).
+#
+# make extcoff = Convert ELF to AVR Extended COFF (for use with AVR Studio
+#                4.07 or greater).
+#
+# make program = Download the hex file to the device, using avrdude.  Please
+#                customize the avrdude settings below first!
+#
+# make filename.s = Just compile filename.c into the assembler code only
+#
+# To rebuild project do "make clean" then "make all".
+#
+
+# mth 2004/09 
+# Differences from WinAVR 20040720 sample:
+# - DEPFLAGS according to Eric Weddingtion's fix (avrfreaks/gcc-forum)
+# - F_OSC Define in CFLAGS and AFLAGS
+
+
+# MCU name
+MCU = atmega8
+
+# Main Oscillator Frequency
+# This is only used to define F_OSC in all assembler and c-sources.
+F_OSC = 8000000
+
+# Output format. (can be srec, ihex, binary)
+FORMAT = ihex
+
+# Target file name (without extension).
+TARGET = main
+
+
+# List C source files here. (C dependencies are automatically generated.)
+SRC = $(TARGET).c uart.c fat.c mmc.c
+
+
+# List Assembler source files here.
+# Make them always end in a capital .S.  Files ending in a lowercase .s
+# will not be considered source files but generated files (assembler
+# output from the compiler), and will be deleted upon "make clean"!
+# Even though the DOS/Win* filesystem matches both .s and .S the same,
+# it will preserve the spelling of the filenames, and gcc itself does
+# care about how the name is spelled on its command-line.
+ASRC = 
+
+
+
+# Optimization level, can be [0, 1, 2, 3, s]. 
+# 0 = turn off optimization. s = optimize for size.
+# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
+OPT = s
+
+# Debugging format.
+# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.
+# AVR (extended) COFF requires stabs, plus an avr-objcopy run.
+#DEBUG = stabs
+#DEBUG = dwarf-2
+
+# List any extra directories to look for include files here.
+#     Each directory must be seperated by a space.
+EXTRAINCDIRS = 
+
+
+# Compiler flag to set the C Standard level.
+# c89   - "ANSI" C
+# gnu89 - c89 plus GCC extensions
+# c99   - ISO C99 standard (not yet fully implemented)
+# gnu99 - c99 plus GCC extensions
+CSTANDARD = -std=gnu99
+
+# Place -D or -U options here
+CDEFS =
+
+# Place -I options here
+CINCS =
+
+
+# Compiler flags.
+#  -g*:          generate debugging information
+#  -O*:          optimization level
+#  -f...:        tuning, see GCC manual and avr-libc documentation
+#  -Wall...:     warning level
+#  -Wa,...:      tell GCC to pass this to the assembler.
+#    -adhlns...: create assembler listing
+CFLAGS = -g$(DEBUG)
+CFLAGS += $(CDEFS) $(CINCS)
+CFLAGS += -O$(OPT)
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
+CFLAGS += -Wall -Wstrict-prototypes
+CFLAGS += -Wa,-adhlns=$(<:.c=.lst)
+CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
+CFLAGS += $(CSTANDARD)
+CFLAGS += -DF_OSC=$(F_OSC)
+CFLAGS +=  -DF_CPU=8000000UL   
+#CFLAGS += -DF_CPU=3686400UL
+
+
+# Assembler flags.
+#  -Wa,...:   tell GCC to pass this to the assembler.
+#  -ahlms:    create listing
+#  -gstabs:   have the assembler create line number information; note that
+#             for use in COFF files, additional information about filenames
+#             and function names needs to be present in the assembler source
+#             files -- see avr-libc docs [FIXME: not yet described there]
+ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs 
+ASFLAGS += -DF_OSC=$(F_OSC)
+
+
+#Additional libraries.
+
+# Minimalistic printf version
+PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
+
+# Floating point printf version (requires MATH_LIB = -lm below)
+PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
+
+PRINTF_LIB = 
+
+# Minimalistic scanf version
+SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
+
+# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
+SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
+
+SCANF_LIB = 
+
+MATH_LIB = -lm
+
+# External memory options
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# used for variables (.data/.bss) and heap (malloc()).
+#EXTMEMOPTS = -Wl,-Tdata=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 =
+
+# Linker flags.
+#  -Wl,...:     tell GCC to pass this to linker.
+#    -Map:      create map file
+#    --cref:    add cross reference to  map file
+LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
+LDFLAGS += $(EXTMEMOPTS)
+LDFLAGS += $(PRINTF_LIB_MIN) $(SCANF_LIB) $(MATH_LIB)
+
+
+
+
+# Programming support using avrdude. Settings and variables.
+
+# Programming hardware: alf avr910 avrisp bascom bsd 
+# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500
+#
+# Type: avrdude -c ?
+# to get a full listing.
+#
+AVRDUDE_PROGRAMMER = stk500v2
+
+# com1 = serial port. Use lpt1 to connect to parallel port.
+AVRDUDE_PORT = /dev/ttyUSB0    # programmer connected to serial device
+
+AVRDUDE_WRITE_FLASH = -U flash:w:$(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_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
+AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
+AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
+AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
+
+#
+# Mega8 set to  internal 4mhz
+# avrdude -p atmega8 -P /dev/ttyUSB0  -c stk500v2 -U lfuse:w:0xe3:m 
+#
+
+
+#flashmac:
+#	uisp  -dprog=avr910 -dpart=ATmega8 -dserial=/dev/cu.PL2303-00002326  --erase -v --upload if=$(TARGET).hex 
+
+
+
+
+
+# ---------------------------------------------------------------------------
+
+# Define directories, if needed.
+DIRAVR = c:/winavr
+DIRAVRBIN = $(DIRAVR)/bin
+DIRAVRUTILS = $(DIRAVR)/utils/bin
+DIRINC = .
+DIRLIB = $(DIRAVR)/avr/lib
+
+
+# Define programs and commands.
+SHELL = sh
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+SIZE = avr-size
+NM = avr-nm
+AVRDUDE = avrdude
+REMOVE = rm -f
+COPY = cp
+
+
+
+
+# Define Messages
+# English
+MSG_ERRORS_NONE = Errors: none
+MSG_BEGIN = -------- begin --------
+MSG_END = --------  end  --------
+MSG_SIZE_BEFORE = Size before: 
+MSG_SIZE_AFTER = Size after:
+MSG_COFF = Converting to AVR COFF:
+MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
+MSG_FLASH = Creating load file for Flash:
+MSG_EEPROM = Creating load file for EEPROM:
+MSG_EXTENDED_LISTING = Creating Extended Listing:
+MSG_SYMBOL_TABLE = Creating Symbol Table:
+MSG_LINKING = Linking:
+MSG_COMPILING = Compiling:
+MSG_ASSEMBLING = Assembling:
+MSG_CLEANING = Cleaning project:
+
+
+
+
+# Define all object files.
+OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) 
+
+# Define all listing files.
+LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)
+
+
+# Compiler flags to generate dependency files.
+### GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-MF,.dep/$(@F).d
+GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d
+
+# Combine all necessary flags and optional flags.
+# Add target processor to flags.
+ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)
+ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
+
+
+
+
+
+# Default target.
+all: begin gccversion sizebefore build sizeafter finished end
+
+build: elf hex eep lss sym
+
+elf: $(TARGET).elf
+hex: $(TARGET).hex
+eep: $(TARGET).eep
+lss: $(TARGET).lss 
+sym: $(TARGET).sym
+
+
+
+# Eye candy.
+# AVR Studio 3.x does not check make's exit code but relies on
+# the following magic strings to be generated by the compile job.
+begin:
+	@echo
+	@echo $(MSG_BEGIN)
+
+finished:
+	@echo $(MSG_ERRORS_NONE)
+
+end:
+	@echo $(MSG_END)
+	@echo
+
+
+# Display size of file.
+HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
+ELFSIZE = $(SIZE) -A $(TARGET).elf
+sizebefore:
+	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi
+
+sizeafter:
+	@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi
+
+
+
+# Display compiler version information.
+gccversion : 
+	@$(CC) --version
+
+
+
+# Program the device.  
+
+flash_avrdude: flash
+
+flash: $(TARGET).hex $(TARGET).eep
+	sudo $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
+
+flash_uisp:
+	sudo uisp -dprog=avr910 -dpart=ATmega8 -dserial=/dev/ttyUSB0  --verify --erase -v --upload if=$(TARGET).hex
+
+
+
+# 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
+	@echo
+	@echo $(MSG_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-avr $< $(TARGET).cof
+
+
+extcoff: $(TARGET).elf
+	@echo
+	@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
+	$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
+
+
+
+# Create final output files (.hex, .eep) from ELF output file.
+%.hex: %.elf
+	@echo
+	@echo $(MSG_FLASH) $@
+	$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+
+%.eep: %.elf
+	@echo
+	@echo $(MSG_EEPROM) $@
+	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+	--change-section-lma .eeprom=0 -O $(FORMAT) $< $@
+
+# Create extended listing file from ELF output file.
+%.lss: %.elf
+	@echo
+	@echo $(MSG_EXTENDED_LISTING) $@
+	$(OBJDUMP) -h -S $< > $@
+
+# Create a symbol table from ELF output file.
+%.sym: %.elf
+	@echo
+	@echo $(MSG_SYMBOL_TABLE) $@
+	$(NM) -n $< > $@
+
+
+
+# Link: create ELF output file from object files.
+.SECONDARY : $(TARGET).elf
+.PRECIOUS : $(OBJ)
+%.elf: $(OBJ)
+	@echo
+	@echo $(MSG_LINKING) $@
+	$(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)
+
+
+# Compile: create object files from C source files.
+%.o : %.c
+	@echo
+	@echo $(MSG_COMPILING) $<
+	$(CC) -c $(ALL_CFLAGS) $< -o $@ 
+
+
+# Compile: create assembler files from C source files.
+%.s : %.c
+	$(CC) -S $(ALL_CFLAGS) $< -o $@
+
+
+# Assemble: create object files from assembler source files.
+%.o : %.S
+	@echo
+	@echo $(MSG_ASSEMBLING) $<
+	$(CC) -c $(ALL_ASFLAGS) $< -o $@
+
+
+
+# Target: clean project.
+clean: begin clean_list finished end
+
+clean_list :
+	@echo
+	@echo $(MSG_CLEANING)
+	$(REMOVE) $(TARGET).hex
+	$(REMOVE) $(TARGET).eep
+	$(REMOVE) $(TARGET).obj
+	$(REMOVE) $(TARGET).cof
+	$(REMOVE) $(TARGET).elf
+	$(REMOVE) $(TARGET).map
+	$(REMOVE) $(TARGET).obj
+	$(REMOVE) $(TARGET).a90
+	$(REMOVE) $(TARGET).sym
+	$(REMOVE) $(TARGET).lnk
+	$(REMOVE) $(TARGET).lss
+	$(REMOVE) $(OBJ)
+	$(REMOVE) $(LST)
+	$(REMOVE) $(SRC:.c=.s)
+	$(REMOVE) $(SRC:.c=.d)
+	$(REMOVE) .dep/*
+
+
+
+# Include the dependency files.
+-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
+
+
+# Listing of phony targets.
+.PHONY : all begin finish end sizebefore sizeafter gccversion \
+build elf hex eep lss sym coff extcoff \
+clean clean_list program
+

+ 316 - 0
poc/avr_sdcard/fat.c

@@ -0,0 +1,316 @@
+/*#######################################################################################
+FAT for AVR (MMC/SD) 
+
+Copyright (C) 2004 Ulrich Radig
+
+Bei Fragen und Verbesserungen wendet euch per EMail an
+
+mail@ulrichradig.de
+
+oder im Forum meiner Web Page : www.ulrichradig.de
+
+
+Dieses Programm ist freie Software. Sie können es unter den Bedingungen der 
+GNU General Public License, wie von der Free Software Foundation veröffentlicht, 
+weitergeben und/oder modifizieren, entweder gemäß Version 2 der Lizenz oder 
+(nach Ihrer Option) jeder späteren Version. 
+
+Die Veröffentlichung dieses Programms erfolgt in der Hoffnung, 
+daß es Ihnen von Nutzen sein wird, aber OHNE IRGENDEINE GARANTIE, 
+sogar ohne die implizite Garantie der MARKTREIFE oder der VERWENDBARKEIT 
+FÜR EINEN BESTIMMTEN ZWECK. Details finden Sie in der GNU General Public License. 
+
+Sie sollten eine Kopie der GNU General Public License zusammen mit diesem 
+Programm erhalten haben. 
+Falls nicht, schreiben Sie an die Free Software Foundation, 
+Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 
+#######################################################################################*/
+
+#include "fat.h"
+
+unsigned char cluster_size;
+unsigned int fat_offset;
+unsigned int cluster_offset;
+unsigned int volume_boot_record_addr;
+
+//############################################################################
+//Auslesen Cluster Size der MMC/SD Karte und Speichern der größe ins EEprom
+//Auslesen Cluster Offset der MMC/SD Karte und Speichern der größe ins EEprom
+void fat_init (uint8_t *Buffer)
+//############################################################################
+{
+	struct BootSec *bootp; //Zeiger auf Bootsektor Struktur
+
+//	unsigned char Buffer[BlockSize];
+
+	//volume_boot_record_addr = fat_addr (Buffer);	
+   	mmc_read_sector (MASTER_BOOT_RECORD,Buffer); //Read Master Boot Record 
+    if (Buffer[510] == 0x55 && Buffer[511] == 0xAA)
+    {
+       FAT_DEBUG("MBR Signatur found!\r\n"); 
+    }
+    else
+    {
+       FAT_DEBUG("MBR Signatur not found!\r\n"); 
+       while(1);
+    }
+
+
+    volume_boot_record_addr = Buffer[VBR_ADDR] + (Buffer[VBR_ADDR+1] << 8);
+    
+	mmc_read_sector (volume_boot_record_addr,Buffer);
+    if (Buffer[510] == 0x55 && Buffer[511] == 0xAA)
+    {
+       FAT_DEBUG("VBR Signatur found!\r\n"); 
+    }
+    else
+    {
+       FAT_DEBUG("VBR Signatur not found!\r\n"); 
+       volume_boot_record_addr = MASTER_BOOT_RECORD;//<- added by Hennie
+       mmc_read_sector (MASTER_BOOT_RECORD,Buffer); //Read Master Boot Record 
+    }   
+    
+    bootp=(struct BootSec *)Buffer;
+	cluster_size = bootp->BPB_SecPerClus;
+	fat_offset = bootp->BPB_RsvdSecCnt;
+
+	cluster_offset = ((bootp->BPB_BytesPerSec * 32)/BlockSize);	
+	cluster_offset += fat_root_dir_addr(Buffer);
+}
+
+//############################################################################
+//Auslesen der Adresse des First Root Directory von Volume Boot Record
+unsigned int fat_root_dir_addr (unsigned char *Buffer) 
+//############################################################################
+{
+	struct BootSec *bootp; //Zeiger auf Bootsektor Struktur
+	unsigned int FirstRootDirSecNum;
+	//auslesen des Volume Boot Record von der MMC/SD Karte 
+	mmc_read_sector (volume_boot_record_addr,Buffer);
+	bootp=(struct BootSec *)Buffer;
+
+	//berechnet den ersten Sector des Root Directory
+	FirstRootDirSecNum = ( bootp->BPB_RsvdSecCnt +
+	                       (bootp->BPB_NumFATs * bootp->BPB_FATSz16));
+
+	FirstRootDirSecNum+= volume_boot_record_addr;
+	
+	return(FirstRootDirSecNum);
+}
+
+//############################################################################
+//	Ausgabe des angegebenen Directory Eintrag in Entry_Count
+//	ist kein Eintrag vorhanden, ist der Eintrag im 
+//	Rückgabe Cluster 0xFFFF. Es wird immer nur ein Eintrag ausgegeben
+//	um Speicherplatz zu sparen um es auch für kleine Atmels zu benutzen
+unsigned int fat_read_dir_ent (unsigned int dir_cluster, //Angabe Dir Cluster
+					unsigned char Entry_Count,   //Angabe welcher Direintrag
+					unsigned long *Size, 		   //Rückgabe der File Größe
+					unsigned char *Dir_Attrib,   //Rückgabe des Dir Attributs
+					unsigned char *Buffer) 	   //Working Buffer
+//############################################################################
+{
+	unsigned char *pointer;
+	unsigned int TMP_Entry_Count = 0;
+	unsigned long Block = 0;
+	struct DirEntry *dir; //Zeiger auf einen Verzeichniseintrag
+
+	pointer = Buffer;
+
+	if (dir_cluster == 0)
+		{
+		Block = fat_root_dir_addr(Buffer);
+		}
+	else
+		{
+		//Berechnung des Blocks aus BlockCount und Cluster aus FATTabelle
+		//Berechnung welcher Cluster zu laden ist
+		//Auslesen der FAT - Tabelle
+		fat_load (dir_cluster,&Block,Buffer);			 
+		Block = ((Block-2) * cluster_size) + cluster_offset;
+		}
+
+	//auslesen des gesamten Root Directory
+	for (unsigned int blk = Block;;blk++)
+	{
+		mmc_read_sector (blk,Buffer);	//Lesen eines Blocks des Root Directory
+		for (unsigned int a=0;a<BlockSize; a = a + 32)
+		{
+		 dir=(struct DirEntry *)&Buffer[a]; //Zeiger auf aktuellen Verzeichniseintrag holen
+		 
+			if (dir->DIR_Name[0] == 0) //Kein weiterer Eintrag wenn erstes Zeichen des Namens 0 ist
+			{
+			return (0xFFFF);
+			}
+			
+			//Prüfen ob es ein 8.3 Eintrag ist
+			//Das ist der Fall wenn es sich nicht um einen Eintrag für lange Dateinamen
+			//oder um einen als gelöscht markierten Eintrag handelt.
+   			if ((dir->DIR_Attr != ATTR_LONG_NAME) &&
+				(dir->DIR_Name[0] != DIR_ENTRY_IS_FREE)) 
+			{
+				//Ist es der gewünschte Verzeichniseintrag
+				if (TMP_Entry_Count == Entry_Count) 
+				{
+					//Speichern des Verzeichnis Eintrages in den Rückgabe Buffer
+					for(unsigned char b=0;b<11;b++)
+					{
+					if (dir->DIR_Name[b] != SPACE)
+						{
+						if (b == 8)
+							{
+							*pointer++= '.';
+							}
+						*pointer++=dir->DIR_Name[b];
+						}
+					}						
+					*pointer++='\0';
+					*Dir_Attrib = dir->DIR_Attr;
+
+					//Speichern der Filegröße
+					*Size=dir->DIR_FileSize;
+					
+					//Speichern des Clusters des Verzeichniseintrages
+					dir_cluster = dir->DIR_FstClusLO;
+
+					//Eintrag gefunden Rücksprung mit Cluster File Start
+					return(dir_cluster);
+				}
+			TMP_Entry_Count++;
+			}
+		}
+	}
+	return (0xFFFF); //Kein Eintrag mehr gefunden Rücksprung mit 0xFFFF
+}
+
+//############################################################################
+//	Auslesen der Cluster für ein File aus der FAT
+//	in den Buffer(512Byte). Bei einer 128MB MMC/SD 
+//	Karte ist die Cluster größe normalerweise 16KB groß
+//	das bedeutet das File kann max. 4MByte groß sein.
+//	Bei größeren Files muß der Buffer größer definiert
+//	werden! (Ready)
+//	Cluster = Start Clusterangabe aus dem Directory	
+void fat_load (	unsigned int Cluster, 		//Angabe Startcluster
+				unsigned long *Block,
+				unsigned char *TMP_Buffer) 	//Workingbuffer
+//############################################################################
+{
+	//Zum Überprüfen ob der FAT Block schon geladen wurde
+	unsigned int FAT_Block_Store = 0;	
+
+	//Byte Adresse innerhalb des Fat Blocks
+	unsigned int FAT_Byte_Addresse;	
+
+	//FAT Block Adresse
+	unsigned int FAT_Block_Addresse;
+	
+	//Berechnung für den ersten FAT Block (FAT Start Addresse)
+	for (unsigned int a = 0;;a++)
+	{	
+		if (a == *Block)
+			{
+			*Block = (0x0000FFFF & Cluster);
+			return;
+			}
+		
+		if (Cluster == 0xFFFF)
+			{
+			break; //Ist das Ende des Files erreicht Schleife beenden
+			}
+		//Berechnung des Bytes innerhalb des FAT Block´s
+		FAT_Byte_Addresse = (Cluster*2) % BlockSize;
+			
+		//Berechnung des Blocks der gelesen werden muß
+		FAT_Block_Addresse = ((Cluster*2) / BlockSize) + 
+								volume_boot_record_addr + fat_offset;	
+		//Lesen des FAT Blocks
+		//Überprüfung ob dieser Block schon gelesen wurde
+		if (FAT_Block_Addresse != FAT_Block_Store)
+			{
+			FAT_Block_Store = FAT_Block_Addresse;
+			//Lesen des FAT Blocks
+			mmc_read_sector (FAT_Block_Addresse,TMP_Buffer);	
+			}
+
+		//Lesen der nächsten Clusternummer
+		Cluster = (TMP_Buffer[FAT_Byte_Addresse + 1] << 8) + 
+					TMP_Buffer[FAT_Byte_Addresse];		
+	}
+	return;
+}
+
+//############################################################################
+//Lesen eines 512Bytes Blocks von einem File
+void fat_read_file (unsigned int Cluster,//Angabe des Startclusters vom File
+				 unsigned char *Buffer,	  //Workingbuffer
+				 unsigned long BlockCount)	  //Angabe welcher Bock vom File geladen 
+										      //werden soll a 512 Bytes
+//############################################################################
+{
+	//Berechnung des Blocks aus BlockCount und Cluster aus FATTabelle
+	//Berechnung welcher Cluster zu laden ist
+	
+	unsigned long Block = (BlockCount/cluster_size);
+	
+	//Auslesen der FAT - Tabelle
+	fat_load (Cluster,&Block,Buffer);			 
+	Block = ((Block-2) * cluster_size) + cluster_offset;
+	//Berechnung des Blocks innerhalb des Cluster
+	Block += (BlockCount % cluster_size);
+	//Read Data Block from Device
+	mmc_read_sector (Block,Buffer);	
+	return;
+}
+
+//############################################################################
+//Lesen eines 512Bytes Blocks von einem File
+void fat_write_file (unsigned int cluster,//Angabe des Startclusters vom File
+					unsigned char *buffer,	  //Workingbuffer
+					unsigned long blockCount)	  //Angabe welcher Bock vom File gespeichert 
+									  //werden soll a 512 Bytes
+//############################################################################
+{
+	//Berechnung des Blocks aus BlockCount und Cluster aus FATTabelle
+	//Berechnung welcher Cluster zu speichern ist
+	unsigned char tmp_buffer[513];	
+	unsigned long block = (blockCount/cluster_size);
+	
+	//Auslesen der FAT - Tabelle
+	fat_load (cluster,&block,tmp_buffer);			 
+	block = ((block-2) * cluster_size) + cluster_offset;
+	//Berechnung des Blocks innerhalb des Cluster
+	block += (blockCount % cluster_size);
+	//Write Data Block to Device
+	mmc_write_sector (block,buffer);	
+	return;
+}
+
+//####################################################################################
+//Sucht ein File im Directory
+unsigned char fat_search_file (unsigned char *File_Name,		//Name des zu suchenden Files
+							unsigned int *Cluster, 	//Angabe Dir Cluster welches
+											//durchsucht werden soll
+											//und Rückgabe des clusters
+											//vom File welches gefunden
+											//wurde
+							unsigned long *Size, 		//Rückgabe der File Größe
+							unsigned char *Dir_Attrib,//Rückgabe des Dir Attributs
+							unsigned char *Buffer) 	//Working Buffer
+//####################################################################################
+{
+	unsigned int Dir_Cluster_Store = *Cluster;
+	for (unsigned char a = 0;a < 100;a++)
+	{
+		*Cluster = fat_read_dir_ent(Dir_Cluster_Store,a,Size,Dir_Attrib,Buffer);
+		if (*Cluster == 0xffff)
+			{
+			return(0); //File not Found
+			}
+		if(strcasecmp((char *)File_Name,(char *)Buffer) == 0)
+			{
+			return(1); //File Found
+			}
+	}
+	return(2); //Error
+}

+ 109 - 0
poc/avr_sdcard/fat.h

@@ -0,0 +1,109 @@
+/*#######################################################################################
+Connect ARM to MMC/SD 
+
+Copyright (C) 2004 Ulrich Radig
+#######################################################################################*/
+
+#ifndef _FAT_H_
+ #define _FAT_H_
+
+#include <string.h>
+#include "mmc.h"
+#include "uart.h"
+
+#define FAT_DEBUG	uart_puts 
+//#define FAT_DEBUG(...)	
+
+
+//Prototypes
+extern unsigned int fat_root_dir_addr (unsigned char *);
+extern unsigned int fat_read_dir_ent (unsigned int,unsigned char,unsigned long*,unsigned char *,unsigned char *);
+extern void fat_load (unsigned int,unsigned long *,unsigned char *);
+extern void fat_read_file (unsigned int,unsigned char *,unsigned long);
+extern void fat_write_file (unsigned int,unsigned char *,unsigned long);
+extern void fat_init (uint8_t *Buffer);
+extern unsigned char fat_search_file (unsigned char *,unsigned int *,unsigned long *,unsigned char *,unsigned char *);
+
+//Block Size in Bytes
+#define BlockSize			512
+
+//Master Boot Record
+#define MASTER_BOOT_RECORD	0
+
+//Volume Boot Record location in Master Boot Record
+#define VBR_ADDR 			0x1C6
+
+//define ASCII
+#define SPACE 				0x20
+#define DIR_ENTRY_IS_FREE   0xE5
+#define FIRST_LONG_ENTRY	0x01
+#define SECOND_LONG_ENTRY	0x42
+
+//define DIR_Attr
+#define ATTR_LONG_NAME		0x0F
+#define ATTR_READ_ONLY		0x01
+#define ATTR_HIDDEN			0x02
+#define ATTR_SYSTEM			0x04
+#define ATTR_VOLUME_ID		0x08
+#define ATTR_DIRECTORY		0x10
+#define ATTR_ARCHIVE		0x20
+
+struct BootSec 
+{
+	unsigned char BS_jmpBoot[3];
+	unsigned char BS_OEMName[8];
+	unsigned int BPB_BytesPerSec; //2 bytes
+	unsigned char	BPB_SecPerClus;
+	unsigned int	BPB_RsvdSecCnt; //2 bytes
+	unsigned char	BPB_NumFATs;
+	unsigned int	BPB_RootEntCnt; //2 bytes
+	unsigned int	BPB_TotSec16; //2 bytes
+	unsigned char	BPB_Media;
+	unsigned int	BPB_FATSz16; //2 bytes
+	unsigned int	BPB_SecPerTrk; //2 bytes
+	unsigned int	BPB_NumHeads; //2 bytes
+	unsigned long	BPB_HiddSec; //4 bytes
+	unsigned long	BPB_TotSec32; //4 bytes
+};
+
+//FAT12 and FAT16 Structure Starting at Offset 36
+#define BS_DRVNUM			36
+#define BS_RESERVED1		37
+#define BS_BOOTSIG			38
+#define BS_VOLID			39
+#define BS_VOLLAB			43
+#define BS_FILSYSTYPE		54
+
+//FAT32 Structure Starting at Offset 36
+#define BPB_FATSZ32			36
+#define BPB_EXTFLAGS		40
+#define BPB_FSVER			42
+#define BPB_ROOTCLUS		44
+#define BPB_FSINFO			48
+#define BPB_BKBOOTSEC		50
+#define BPB_RESERVED		52
+
+#define FAT32_BS_DRVNUM		64
+#define FAT32_BS_RESERVED1	65
+#define FAT32_BS_BOOTSIG	66
+#define FAT32_BS_VOLID		67
+#define FAT32_BS_VOLLAB		71
+#define FAT32_BS_FILSYSTYPE	82
+//End of Boot Sctor and BPB Structure
+
+struct DirEntry {
+	unsigned char	DIR_Name[11];     //8 chars filename
+	unsigned char	DIR_Attr;         //file attributes RSHA, Longname, Drive Label, Directory
+	unsigned char	DIR_NTRes;        //set to zero
+	unsigned char	DIR_CrtTimeTenth; //creation time part in milliseconds
+	unsigned int	DIR_CrtTime;      //creation time
+	unsigned int	DIR_CrtDate;      //creation date
+	unsigned int	DIR_LastAccDate;  //last access date
+	unsigned int	DIR_FstClusHI;    //first cluster high word                 
+	unsigned int	DIR_WrtTime;      //last write time
+	unsigned int	DIR_WrtDate;      //last write date
+	unsigned int	DIR_FstClusLO;    //first cluster low word                 
+	unsigned long	DIR_FileSize;     
+	};
+
+#endif //_FAT_H_

+ 238 - 0
poc/avr_sdcard/main.c

@@ -0,0 +1,238 @@
+#define F_CPU 8000000
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <stdlib.h>
+
+#include "uart.h"
+#include "mmc.h"
+#include "fat.h"
+
+//SREG defines
+#define S_MOSI 	PB3
+#define S_MISO	PB4
+#define S_SCK  	PB5
+#define S_LATCH	PB2
+
+//DEBUG defines
+#define D_LED0	PC5
+
+//SRAM defines
+#define R_WR	PB6
+#define R_RD	PB7
+#define R_DATA	PORTD
+#define R_DIR	DDRD
+
+
+#define DEBUG_BUFFER_SIZE 128
+#define READ_BUFFER_SIZE 512
+
+uint8_t debug_buffer[DEBUG_BUFFER_SIZE];
+uint8_t read_buffer[READ_BUFFER_SIZE];
+
+void dprintf(const uint8_t * fmt, ...) {
+
+	va_list args;
+    va_start(args, fmt);
+    vsprintf(debug_buffer, fmt, args);
+    va_end(args);
+    uart_puts(debug_buffer);
+}
+
+
+void dump_packet(uint32_t addr,uint32_t len,uint8_t *packet){
+	uint16_t i,j;
+	uint16_t sum =0;
+	for (i=0;i<len;i+=16) {
+		sum = 0;
+		for (j=0;j<16;j++) {
+			sum +=packet[i+j];
+		}
+		if (!sum)
+			continue;
+
+		dprintf("%08x:", addr + i);
+		for (j=0;j<16;j++) {
+			dprintf(" %02x", packet[i+j]);
+		}
+		dprintf(" |");
+		for (j=0;j<16;j++) {
+			if (packet[i+j]>=33 && packet[i+j]<=126 )
+				dprintf("%c", packet[i+j]);
+			else
+				dprintf(".");
+		}
+		dprintf("|\n");
+	}
+}
+
+
+void spi_init(void)
+{
+	/* Set MOSI and SCK output, all others input */
+	DDRB |= ((1<<S_MOSI) | (1<<S_SCK) | (1<<S_LATCH));
+	DDRB &= ~(1<<S_MISO);
+	PORTB |= (1<<S_MISO);
+	/* Enable SPI, Master*/
+	SPCR = ((1<<SPE) | (1<<MSTR));
+}
+
+void spi_master_transmit(unsigned char cData)
+{
+	/* Start transmission */
+	SPDR = cData;
+
+	/* Wait for transmission complete */
+	while(!(SPSR & (1<<SPIF)));
+}
+
+uint8_t sram_read(uint32_t addr)
+{
+	uint8_t byte;
+
+	DDRD=0x00;
+	PORTD=0xff;
+
+	PORTB |= (1<<R_RD);
+	PORTB |= (1<<R_WR);
+
+	spi_master_transmit((uint8_t)(addr>>16));
+	spi_master_transmit((uint8_t)(addr>>8));
+	spi_master_transmit((uint8_t)(addr>>0));
+
+	PORTB |= (1<<S_LATCH);
+    PORTB &= ~(1<<S_LATCH);
+    PORTB &= ~(1<<R_RD);
+
+	asm volatile ("nop");
+	asm volatile ("nop");
+	asm volatile ("nop");
+
+	byte = PIND;
+	PORTB |= (1<<R_RD);
+	DDRD=0x00;
+	PORTD=0x00;
+	return byte;
+}
+
+void sram_write(uint32_t addr, uint8_t data)
+{
+	DDRD=0xff;
+
+	PORTB |= (1<<R_RD);
+	PORTB |= (1<<R_WR);
+
+	spi_master_transmit((uint8_t)(addr>>16));
+	spi_master_transmit((uint8_t)(addr>>8));
+	spi_master_transmit((uint8_t)(addr>>0));
+
+	PORTB |= (1<<S_LATCH);
+	PORTB &= ~(1<<S_LATCH);
+
+	PORTB &= ~(1<<R_WR);
+
+	PORTD=data;
+
+	PORTB |= (1<<R_WR);
+
+	DDRD=0x00;
+	PORTD=0x00;
+}
+
+void  sram_init(void){
+	DDRD=0x00;
+	PORTD=0x00;
+
+	DDRB |= ((1<<R_WR) | (1<<R_RD));
+	PORTB |= (1<<R_RD);
+	PORTB |= (1<<R_WR);
+
+	DDRC |= (1<<D_LED0);
+}
+
+
+void sram_clear(uint32_t addr, uint32_t len){
+
+	uint32_t i;
+	for (i=addr; i<(addr + len);i++ )
+		sram_write(i, 0x00);
+}
+
+void sram_copy(uint32_t addr,uint8_t *src, uint32_t len){
+
+	uint32_t i;
+	uint8_t *ptr = src;
+	for (i=addr; i<(addr + len);i++ )
+		sram_write(addr, *ptr++);
+}
+
+void sram_read_buffer(uint32_t addr,uint8_t *dst, uint32_t len){
+
+	uint32_t i;
+	uint8_t *ptr = dst;
+	for (i=addr; i<(addr + len);i++ ){
+		*ptr = sram_read(addr);
+		ptr++;
+	}
+}
+
+int main(void)
+{
+
+	uint16_t 	fat_cluster = 0;
+    uint8_t 	fat_attrib = 0;
+    uint32_t 	fat_size = 0;
+    uint32_t 	rom_addr = 0;
+
+
+
+    uart_init();
+
+    sram_init();
+	dprintf("sram_init\n");
+
+	spi_init();
+	dprintf("spi_init\n");
+
+	sram_clear(0x000000, 0x400000);
+	dprintf("sram_clear\n");
+
+	while ( mmc_init() !=0) {
+		dprintf("no sdcard..\n\r");
+    }
+    dprintf("mmc_init\n\r");
+
+    fat_init(read_buffer);
+    dprintf("fat_init\n\r");
+
+
+    rom_addr = 0x000000;
+    dprintf("look for sprite.smc\n\r");
+
+    if (fat_search_file((uint8_t*)"sprite.smc",
+						&fat_cluster,
+						&fat_size,
+						&fat_attrib,
+						read_buffer) == 1) {
+
+        for (uint16_t block_cnt=0; block_cnt<512; block_cnt++) {
+        	fat_read_file (fat_cluster,read_buffer,block_cnt);
+        	dprintf("Read Block %i addr 0x%06\n",block_cnt,rom_addr);
+        	sram_copy(rom_addr,read_buffer,512);
+			rom_addr += 512;
+        }
+	}
+
+    rom_addr = 0x000000;
+    for (uint16_t block_cnt=0; block_cnt<512; block_cnt++) {
+    	sram_read_buffer(rom_addr,read_buffer,512);
+    	dump_packet(rom_addr,512,read_buffer);
+		rom_addr += 512;
+    }
+
+
+	while(1);
+
+	return(0);
+}
+

+ 298 - 0
poc/avr_sdcard/mmc.c

@@ -0,0 +1,298 @@
+/*#######################################################################################
+Connect AVR to MMC/SD 
+
+Copyright (C) 2004 Ulrich Radig
+
+Bei Fragen und Verbesserungen wendet euch per EMail an
+
+mail@ulrichradig.de
+
+oder im Forum meiner Web Page : www.ulrichradig.de
+
+Dieses Programm ist freie Software. Sie können es unter den Bedingungen der 
+GNU General Public License, wie von der Free Software Foundation veröffentlicht, 
+weitergeben und/oder modifizieren, entweder gemäß Version 2 der Lizenz oder 
+(nach Ihrer Option) jeder späteren Version. 
+
+Die Veröffentlichung dieses Programms erfolgt in der Hoffnung, 
+daß es Ihnen von Nutzen sein wird, aber OHNE IRGENDEINE GARANTIE, 
+sogar ohne die implizite Garantie der MARKTREIFE oder der VERWENDBARKEIT 
+FÜR EINEN BESTIMMTEN ZWECK. Details finden Sie in der GNU General Public License. 
+
+Sie sollten eine Kopie der GNU General Public License zusammen mit diesem 
+Programm erhalten haben. 
+Falls nicht, schreiben Sie an die Free Software Foundation, 
+Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 
+#######################################################################################*/
+
+#include "mmc.h"
+#include <util/delay.h>
+
+//############################################################################
+//Routine zur Initialisierung der MMC/SD-Karte (SPI-MODE)
+unsigned char mmc_init ()
+//############################################################################
+{
+	unsigned int Timeout = 0,i;
+	
+	//Konfiguration des Ports an der die MMC/SD-Karte angeschlossen wurde
+	DDRC  |= ( (1<<MMC_DO) | (1<<MMC_CS) | (1<<MMC_CLK) );
+        DDRC  &=  ~(1<<MMC_DI);
+        PORTC |= ( (1<<MMC_DO) | (1<<MMC_DI) | (1<<MMC_CS) );
+
+	//Wartet eine kurze Zeit
+	_delay_ms(10);
+
+	
+	//Initialisiere MMC/SD-Karte in den SPI-Mode
+	for(i=0; i<250; i++)
+	{
+                PORTC ^= (1<<MMC_CLK);
+                _delay_us(4);
+        }
+        
+	PORTC &= ~(1<<MMC_CLK);
+        _delay_us(10);
+
+	 PORTC &= ~(1<<MMC_CS);
+        _delay_us(3);
+
+	
+	//Sendet Commando CMD0 an MMC/SD-Karte
+	unsigned char CMD[] = {0x40,0x00,0x00,0x00,0x00,0x95};
+	
+	while(mmc_write_command (CMD) !=1)
+	{
+		if (Timeout++ > 20)
+		{
+			MMC_Disable();
+			return(1); //Abbruch bei Commando1 (Return Code1)
+		}
+	}
+	
+	//Sendet Commando CMD1 an MMC/SD-Karte
+	Timeout = 0;
+	
+	CMD[0] = 0x41;//Commando 1
+	CMD[5] = 0xFF;
+	
+	while( mmc_write_command (CMD) !=0)
+	{
+		if (Timeout++ > 800)
+			{
+			MMC_Disable();
+			return(9); //Abbruch bei Commando2 (Return Code2)
+			}
+	}
+	return(0);
+}
+
+//############################################################################
+//Sendet ein Commando an die MMC/SD-Karte
+unsigned char mmc_write_command (unsigned char *cmd)
+//############################################################################
+{
+	unsigned char tmp = 0xff;
+	unsigned int Timeout = 0;
+
+
+	//sendet 6 Byte Commando
+	for (unsigned char a = 0;a<0x06;a++) //sendet 6 Byte Commando zur MMC/SD-Karte
+	{
+		mmc_write_byte(*cmd++);
+	}
+
+	//Wartet auf ein gültige Antwort von der MMC/SD-Karte
+	while (tmp == 0xff)	
+	{
+		tmp = mmc_read_byte();
+
+		if (Timeout++ > 50)
+			{
+			break; //Abbruch da die MMC/SD-Karte nicht Antwortet
+			}
+		}
+	return(tmp);
+}
+
+//############################################################################
+//Routine zum Empfangen eines Bytes von der MMC-Karte 
+unsigned char mmc_read_byte (void)
+//############################################################################
+{
+	uint8_t Byte=0,j;
+	
+	for(j=0; j<8; j++){
+        	Byte = (Byte<<1);
+		
+		PORTC |= (1<<MMC_CLK);
+                _delay_us(4);
+
+                if(PINC & (1<<MMC_DI)){
+                	Byte |= 1;
+                }
+                else{
+                	Byte &= ~1;
+                }
+
+                PORTC &= ~(1<<MMC_CLK);
+                _delay_us(4);
+	}
+	
+	return (Byte);
+}
+
+
+//############################################################################
+//Routine zum Senden eines Bytes zur MMC-Karte
+void mmc_write_byte (unsigned char Byte)
+//############################################################################
+{
+	uint8_t i;
+
+	for(i=0; i<8; i++){
+        	if(Byte & 0x80){
+                	PORTC |=  (1<<MMC_DO);
+                }
+                else{
+                	PORTC &= ~(1<<MMC_DO);
+                }
+
+                Byte = (Byte<<1);
+                PORTC |=  (1<<MMC_CLK);
+                _delay_us(4);
+                PORTC &= ~(1<<MMC_CLK);
+                _delay_us(4);
+	}
+	PORTC |= (1<<MMC_DO);
+}
+
+//############################################################################
+//Routine zum schreiben eines Blocks(512Byte) auf die MMC/SD-Karte
+unsigned char mmc_write_sector (unsigned long addr,unsigned char *Buffer)
+//############################################################################
+{
+	unsigned char tmp;
+	//Commando 24 zum schreiben eines Blocks auf die MMC/SD - Karte
+	unsigned char cmd[] = {0x58,0x00,0x00,0x00,0x00,0xFF}; 
+	
+	/*Die Adressierung der MMC/SD-Karte wird in Bytes angegeben,
+	  addr wird von Blocks zu Bytes umgerechnet danach werden 
+	  diese in das Commando eingefügt*/
+	  
+	addr = addr << 9; //addr = addr * 512
+	
+	cmd[1] = ((addr & 0xFF000000) >>24 );
+	cmd[2] = ((addr & 0x00FF0000) >>16 );
+	cmd[3] = ((addr & 0x0000FF00) >>8 );
+
+	//Sendet Commando cmd24 an MMC/SD-Karte (Write 1 Block/512 Bytes)
+	tmp = mmc_write_command (cmd);
+	if (tmp != 0)
+		{
+		return(tmp);
+		}
+			
+	//Wartet einen Moment und sendet einen Clock an die MMC/SD-Karte
+	for (unsigned char a=0;a<100;a++)
+		{
+		mmc_read_byte();
+		}
+	
+	//Sendet Start Byte an MMC/SD-Karte
+	mmc_write_byte(0xFE);	
+	
+	//Schreiben des Bolcks (512Bytes) auf MMC/SD-Karte
+	for (unsigned int a=0;a<512;a++)
+		{
+		mmc_write_byte(*Buffer++);
+		}
+	
+	//CRC-Byte schreiben
+	mmc_write_byte(0xFF); //Schreibt Dummy CRC
+	mmc_write_byte(0xFF); //CRC Code wird nicht benutzt
+	
+	//Fehler beim schreiben? (Data Response XXX00101 = OK)
+	if((mmc_read_byte()&0x1F) != 0x05) return(1);
+
+	//Wartet auf MMC/SD-Karte Bussy
+	while (mmc_read_byte() != 0xff){};
+	
+	
+return(0);
+}
+
+//############################################################################
+//Routine zum lesen des CID Registers von der MMC/SD-Karte (16Bytes)
+void mmc_read_block(unsigned char *cmd,unsigned char *Buffer,unsigned int Bytes)
+//############################################################################
+{	
+	//Sendet Commando cmd an MMC/SD-Karte
+	if (mmc_write_command (cmd) != 0)
+			{
+			 return;
+			}
+
+	//Wartet auf Start Byte von der MMC/SD-Karte (FEh/Start Byte)
+	
+	while (mmc_read_byte() != 0xfe){};
+
+	//Lesen des Bolcks (normal 512Bytes) von MMC/SD-Karte
+	for (unsigned int a=0;a<Bytes;a++)
+		{
+		*Buffer++ = mmc_read_byte();
+		}
+	//CRC-Byte auslesen
+	mmc_read_byte();//CRC - Byte wird nicht ausgewertet
+	mmc_read_byte();//CRC - Byte wird nicht ausgewertet
+	
+	
+	return;
+}
+
+//############################################################################
+//Routine zum lesen eines Blocks(512Byte) von der MMC/SD-Karte
+unsigned char mmc_read_sector (unsigned long addr,unsigned char *Buffer)
+//############################################################################
+{	
+	//Commando 16 zum lesen eines Blocks von der MMC/SD - Karte
+	unsigned char cmd[] = {0x51,0x00,0x00,0x00,0x00,0xFF}; 
+	/*Die Adressierung der MMC/SD-Karte wird in Bytes angegeben,
+	  addr wird von Blocks zu Bytes umgerechnet danach werden 
+	  diese in das Commando eingefügt*/
+	  
+	addr = addr << 9; //addr = addr * 512
+
+	cmd[1] = ((addr & 0xFF000000) >>24 );
+	cmd[2] = ((addr & 0x00FF0000) >>16 );
+	cmd[3] = ((addr & 0x0000FF00) >>8 );
+
+	mmc_read_block(cmd,Buffer,512);
+
+	return(0);
+}
+
+//############################################################################
+//Routine zum lesen des CID Registers von der MMC/SD-Karte (16Bytes)
+unsigned char mmc_read_cid (unsigned char *Buffer)
+//############################################################################
+{
+	//Commando zum lesen des CID Registers
+	unsigned char cmd[] = {0x4A,0x00,0x00,0x00,0x00,0xFF}; 
+	
+	mmc_read_block(cmd,Buffer,16);
+
+	return(0);
+}
+
+//############################################################################
+//Routine zum lesen des CSD Registers von der MMC/SD-Karte (16Bytes)
+unsigned char mmc_read_csd (unsigned char *Buffer)
+//############################################################################
+{	
+	//Commando zum lesen des CSD Registers
+	unsigned char cmd[] = {0x49,0x00,0x00,0x00,0x00,0xFF};
+	
+	mmc_read_block(cmd,Buffer,16);
+	return(0);
+}

+ 57 - 0
poc/avr_sdcard/mmc.h

@@ -0,0 +1,57 @@
+/*#######################################################################################
+Connect ARM to MMC/SD 
+
+Copyright (C) 2004 Ulrich Radig
+#######################################################################################*/
+
+#ifndef _MMC_H_
+ #define _MMC_H_
+
+#include <avr/io.h>	
+
+//#define SPI_Mode			1		//1 = Hardware SPI | 0 = Software SPI
+#define SPI_Mode			0
+
+#define MMC_Write			PORTC	//Port an der die MMC/SD-Karte angeschlossen ist also des SPI 
+#define MMC_Read			PINC
+#define MMC_Direction_REG		DDRC	
+
+#if defined (__AVR_ATmega8__)
+#define MMC_CS  PC0
+#define MMC_DO  PC1
+#define MMC_DI  PC2
+#define MMC_CLK PC3
+        #define SPI_SS                          4               //Nicht Benutz muß aber definiert werden
+#endif
+
+
+//Prototypes
+extern unsigned char mmc_read_byte(void);
+
+extern void mmc_write_byte(unsigned char);
+
+extern void mmc_read_block(unsigned char *,unsigned char *,unsigned in);
+
+extern unsigned char mmc_init(void);
+
+extern unsigned char mmc_read_sector (unsigned long,unsigned char *);
+
+extern unsigned char mmc_write_sector (unsigned long,unsigned char *);
+
+extern unsigned char mmc_write_command (unsigned char *);
+
+extern unsigned char mmc_read_csd (unsigned char *);
+
+extern unsigned char mmc_read_cid (unsigned char *);
+
+//set MMC_Chip_Select to high (MMC/SD-Karte Inaktiv)
+#define MMC_Disable() MMC_Write|= (1<<MMC_CS);
+
+//set MMC_Chip_Select to low (MMC/SD-Karte Aktiv)
+#define MMC_Enable() MMC_Write&=~(1<<MMC_CS);
+
+#define nop()  __asm__ __volatile__ ("nop" ::)
+
+#endif //_MMC_H_
+
+

+ 2 - 0
poc/avr_sdcard/notes

@@ -0,0 +1,2 @@
+#uisp -dprog=avr910 -dpart=ATmega8 -dserial=/dev/ttyUSB0 --rd_fuses
+#uisp -dprog=avr910 -dpart=ATmega8 -dserial=/dev/ttyUSB0 --erase --verify -v --upload if=blinky.hex

+ 223 - 0
poc/avr_sdcard/uart.c

@@ -0,0 +1,223 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#ifndef SIGNAL
+#include <avr/signal.h>
+#endif // SIGNAL 
+
+#include "uart.h"
+
+// Folgende Zeile einkommentieren, falls FIFO verwendet werden soll 
+// #include "fifo.h" 
+
+#define BAUDRATE 38400
+#define F_CPU 8000000
+
+#define nop() __asm volatile ("nop")
+
+#ifdef SUART_TXD
+    #define SUART_TXD_PORT PORTB
+    #define SUART_TXD_DDR  DDRB
+    #define SUART_TXD_BIT  PB1
+    static volatile uint16_t outframe;
+#endif // SUART_TXD 
+
+#ifdef SUART_RXD
+    #define SUART_RXD_PORT PORTB
+    #define SUART_RXD_PIN  PINB
+    #define SUART_RXD_DDR  DDRB
+    #define SUART_RXD_BIT  PB0
+    static volatile uint16_t inframe;
+    static volatile uint8_t inbits, received;
+
+    #ifdef _FIFO_H_
+        #define INBUF_SIZE 4
+        static uint8_t inbuf[INBUF_SIZE];
+        fifo_t infifo;
+    #else // _FIFO_H_ 
+        static volatile uint8_t indata;
+    #endif // _FIFO_H_ 
+#endif // SUART_RXD 
+
+
+// Initialisierung für einen ATmega8 
+// Für andere AVR-Derivate sieht dies vermutlich anders aus: 
+// Registernamen ändern sich (zB TIMSK0 anstatt TIMSK, etc). 
+void uart_init()
+{
+    uint8_t tifr = 0;
+    uint8_t sreg = SREG;
+    cli();
+
+    // Mode #4 für Timer1 
+    // und volle MCU clock 
+    // IC Noise Cancel 
+    // IC on Falling Edge 
+    TCCR1A = 0;
+    TCCR1B = (1 << WGM12) | (1 << CS10) | (0 << ICES1) | (1 << ICNC1);
+
+    // OutputCompare für gewünschte Timer1 Frequenz 
+    OCR1A = (uint16_t) ((uint32_t) F_CPU/BAUDRATE);
+
+#ifdef SUART_RXD
+    SUART_RXD_DDR  &= ~(1 << SUART_RXD_BIT);
+    SUART_RXD_PORT |=  (1 << SUART_RXD_BIT);
+    TIMSK |= (1 << TICIE1);
+    tifr  |= (1 << ICF1) | (1 << OCF1B);
+#else
+    TIMSK &= ~(1 << TICIE1);
+#endif // SUART_RXD 
+
+#ifdef SUART_TXD
+    tifr |= (1 << OCF1A);
+    SUART_TXD_PORT |= (1 << SUART_TXD_BIT);
+    SUART_TXD_DDR  |= (1 << SUART_TXD_BIT);
+    outframe = 0;
+#endif // SUART_TXD 
+
+    TIFR = tifr;
+
+    SREG = sreg;
+}
+
+
+#ifdef SUART_TXD
+void uart_putc (uint8_t c)
+{
+    do
+    {
+        sei(); nop(); cli(); // yield(); 
+    } while (outframe);
+
+    // frame = *.P.7.6.5.4.3.2.1.0.S   S=Start(0), P=Stop(1), *=Endemarke(1) 
+    outframe = (3 << 9) | (((uint8_t) c) << 1);
+
+    TIMSK |= (1 << OCIE1A);
+    TIFR   = (1 << OCF1A);
+
+    sei();
+}
+
+void uart_puts (uint8_t *buf)
+{
+    while( *buf )
+       uart_putc ( *buf++ );
+
+}
+#endif // SUART_TXD 
+
+
+#ifdef SUART_TXD
+SIGNAL (SIG_OUTPUT_COMPARE1A)
+{
+    uint16_t data = outframe;
+   
+    if (data & 1)      SUART_TXD_PORT |=  (1 << SUART_TXD_BIT);
+    else               SUART_TXD_PORT &= ~(1 << SUART_TXD_BIT);
+   
+    if (1 == data)
+    {
+        TIMSK &= ~(1 << OCIE1A);
+    }   
+   
+    outframe = data >> 1;
+}
+#endif // SUART_TXD
+
+
+
+#ifdef SUART_RXD
+SIGNAL (SIG_INPUT_CAPTURE1)
+{
+    uint16_t icr1  = ICR1;
+    uint16_t ocr1a = OCR1A;
+   
+    // Eine halbe Bitzeit zu ICR1 addieren (modulo OCR1A) und nach OCR1B
+    uint16_t ocr1b = icr1 + ocr1a/2;
+    if (ocr1b >= ocr1a)
+        ocr1b -= ocr1a;
+    OCR1B = ocr1b;
+   
+    TIFR = (1 << OCF1B);
+    TIMSK = (TIMSK & ~(1 << TICIE1)) | (1 << OCIE1B);
+    inframe = 0;
+    inbits = 0;
+}
+#endif // SUART_RXD
+
+
+
+
+#ifdef SUART_RXD
+SIGNAL (SIG_OUTPUT_COMPARE1B)
+{
+    uint16_t data = inframe >> 1;
+   
+    if (SUART_RXD_PIN & (1 << SUART_RXD_BIT))
+        data |= (1 << 9);
+      
+    uint8_t bits = inbits+1;
+   
+    if (10 == bits)
+    {
+        if ((data & 1) == 0)
+            if (data >= (1 << 9))
+            {
+#ifdef _FIFO_H_         
+                _inline_fifo_put (&infifo, data >> 1);
+#else            
+                indata = data >> 1;
+#endif // _FIFO_H_            
+                received = 1;
+            }
+      
+        TIMSK = (TIMSK & ~(1 << OCIE1B)) | (1 << TICIE1);
+        TIFR = (1 << ICF1);
+    }
+    else
+    {
+        inbits = bits;
+        inframe = data;
+    }
+}
+#endif // SUART_RXD
+
+
+
+#ifdef SUART_RXD
+#ifdef _FIFO_H_
+
+uint8_t uart_getc_wait()
+{
+    return (int) fifo_get_wait (&infifo);
+}
+
+int uart_getc_nowait()
+{
+    return fifo_get_nowait (&infifo);
+}
+
+#else // _FIFO_H_
+
+uint8_t uart_getc_wait()
+{
+    while (!received)   {}
+    received = 0;
+   
+    return (uint8_t) indata;
+}
+
+uint8_t uart_getc_nowait()
+{
+    if (received)
+    {
+        received = 0;
+        return (uint8_t) indata;
+    }
+   
+    return -1;
+}
+
+#endif // _FIFO_H_
+#endif // SUART_RXD
+

+ 23 - 0
poc/avr_sdcard/uart.h

@@ -0,0 +1,23 @@
+#ifndef _UART_H_
+#define _UART_H_
+
+#define SUART_TXD
+#define SUART_RXD
+
+#include <avr/io.h>
+#include <stdio.h>
+
+void uart_init();
+
+#ifdef SUART_TXD
+    void uart_putc(uint8_t byte);
+    void uart_puts(uint8_t *buf);
+#endif // SUART_RXD
+
+#ifdef SUART_RXD
+    uint8_t uart_getc_wait();
+    uint8_t uart_getc_nowait();
+#endif // SUART_RXD
+
+#endif /* _UART_H_ */
+

+ 7 - 0
poc/poc_mmc/Makefile

@@ -212,6 +212,13 @@ AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
 #
 
 
+#flashmac:
+#	uisp  -dprog=avr910 -dpart=ATmega8 -dserial=/dev/cu.PL2303-00002326  --erase -v --upload if=$(TARGET).hex 
+
+
+
+
+
 # ---------------------------------------------------------------------------
 
 # Define directories, if needed.