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Initial commit.

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What do initial commits and orphans have in common?

Neither have got parents.
This commit is contained in:
Philipp Joram 2016-05-09 18:43:38 +02:00
commit 88b15511a3
28 changed files with 3102 additions and 0 deletions
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13
.gitignore vendored Normal file
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# binaries
*.elf
*.3dsx
*.smdh
linux/ctroller
# build directories
3DS/build
linux/build
linux/bin
# misc files
.ycm_extra_conf.pyc

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---
Language: Cpp
# BasedOnStyle: LLVM
AccessModifierOffset: -2
AlignAfterOpenBracket: true
AlignConsecutiveAssignments: true
AlignEscapedNewlinesLeft: false
AlignOperands: true
AlignTrailingComments: true
AllowAllParametersOfDeclarationOnNextLine: true
AllowShortBlocksOnASingleLine: false
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: Inline
AllowShortIfStatementsOnASingleLine: false
AllowShortLoopsOnASingleLine: false
AlwaysBreakAfterDefinitionReturnType: None
AlwaysBreakBeforeMultilineStrings: false
AlwaysBreakTemplateDeclarations: false
BinPackArguments: false
BinPackParameters: false
BreakBeforeBinaryOperators: None
BreakBeforeBraces: Linux
BreakBeforeTernaryOperators: true
BreakConstructorInitializersBeforeComma: false
ColumnLimit: 80
CommentPragmas: '^ IWYU pragma:'
ConstructorInitializerAllOnOneLineOrOnePerLine: true
ConstructorInitializerIndentWidth: 4
ContinuationIndentWidth: 4
Cpp11BracedListStyle: true
DerivePointerAlignment: false
DisableFormat: false
ExperimentalAutoDetectBinPacking: false
ForEachMacros: [ foreach, Q_FOREACH, BOOST_FOREACH ]
IndentCaseLabels: false
IndentWidth: 4
IndentWrappedFunctionNames: false
KeepEmptyLinesAtTheStartOfBlocks: true
MacroBlockBegin: ''
MacroBlockEnd: ''
MaxEmptyLinesToKeep: 1
NamespaceIndentation: None
ObjCBlockIndentWidth: 2
ObjCSpaceAfterProperty: false
ObjCSpaceBeforeProtocolList: true
PenaltyBreakBeforeFirstCallParameter: 19
PenaltyBreakComment: 300
PenaltyBreakFirstLessLess: 120
PenaltyBreakString: 1000
PenaltyExcessCharacter: 1000000
PenaltyReturnTypeOnItsOwnLine: 60
PointerAlignment: Right
SpaceAfterCStyleCast: true
SpaceBeforeAssignmentOperators: true
SpaceBeforeParens: ControlStatements
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 1
SpacesInAngles: false
SpacesInContainerLiterals: true
SpacesInCStyleCastParentheses: false
SpacesInParentheses: false
SpacesInSquareBrackets: false
Standard: Cpp11
TabWidth: 8
UseTab: Never
...

138
3DS/.ycm_extra_conf.py Normal file
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import os
import logging
import ycm_core
if not 'DEVKITARM' in os.environ:
logging.info("Please set $DEVKITARM in your environment.")
flags = [
'-x',
'c',
'-g',
'-fomit-frame-pointer',
'-ffunction-sections',
'-Wall',
'-Wextra',
'-Werror',
'--sysroot=' + os.path.expandvars('${DEVKITARM}/arm-none-eabi'),
'-I', os.path.expandvars('${DEVKITARM}/arm-none-eabi/include'),
'-I', os.path.expandvars('${DEVKITPRO}/libctru/include'),
'-I', 'include',
'-I', 'source',
'-DARM11',
'-D_3DS',
'-DDEBUG',
'-DVERSION_MAJOR=0',
'-DVERSION_MINOR=0',
'-DVERSION_PATCH=0',
]
source_dir = 'source'
# Set this to the absolute path to the folder (NOT the file!) containing the
# compile_commands.json file to use that instead of 'flags'. See here for
# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
#
# You can get CMake to generate this file for you by adding:
# set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
# to your CMakeLists.txt file.
#
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
compilation_database_folder = ''
if os.path.exists( compilation_database_folder ):
database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
database = None
SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
def DirectoryOfThisScript():
return os.path.dirname( os.path.abspath( __file__ ) )
def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
if not working_directory:
return list( flags )
new_flags = []
make_next_absolute = False
path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
for flag in flags:
new_flag = flag
if make_next_absolute:
make_next_absolute = False
if not flag.startswith( '/' ):
new_flag = os.path.join( working_directory, flag )
for path_flag in path_flags:
if flag == path_flag:
make_next_absolute = True
break
if flag.startswith( path_flag ):
path = flag[ len( path_flag ): ]
new_flag = path_flag + os.path.join( working_directory, path )
break
if new_flag:
new_flags.append( new_flag )
return new_flags
def IsHeaderFile( filename ):
extension = os.path.splitext( filename )[ 1 ]
return extension in [ '.h', '.hxx', '.hpp', '.hh' ]
def GetCompilationInfoForFile( filename ):
# The compilation_commands.json file generated by CMake does not have entries
# for header files. So we do our best by asking the db for flags for a
# corresponding source file, if any. If one exists, the flags for that file
# should be good enough.
if IsHeaderFile( filename ):
basename = os.path.splitext( os.path.basename( filename ) )[ 0 ]
for extension in SOURCE_EXTENSIONS:
replacement_file = DirectoryOfThisScript() + '/' + source_dir + '/' + basename + extension
if os.path.exists( replacement_file ):
logging.info("Replacement is " + replacement_file)
compilation_info = database.GetCompilationInfoForFile(
replacement_file )
if compilation_info.compiler_flags_:
logging.info("Found compiler flags.")
return compilation_info
return None
return database.GetCompilationInfoForFile( filename )
def FlagsForFile( filename, **kwargs ):
if database:
# Bear in mind that compilation_info.compiler_flags_ does NOT return a
# python list, but a "list-like" StringVec object
logging.info("Loaded database from " + compilation_database_folder)
compilation_info = GetCompilationInfoForFile( filename )
if not compilation_info:
return None
final_flags = MakeRelativePathsInFlagsAbsolute(
compilation_info.compiler_flags_,
compilation_info.compiler_working_dir_ )
else:
logging.info("Getting flags")
relative_to = DirectoryOfThisScript()
final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
logging.info(final_flags)
return {
'flags': final_flags,
'do_cache': True
}

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3DS/Makefile Normal file
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#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif
TOPDIR ?= $(CURDIR)
include $(DEVKITARM)/3ds_rules
#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
#
# NO_SMDH: if set to anything, no SMDH file is generated.
# ROMFS is the directory which contains the RomFS, relative to the Makefile (Optional)
# APP_TITLE is the name of the app stored in the SMDH file (Optional)
# APP_DESCRIPTION is the description of the app stored in the SMDH file (Optional)
# APP_AUTHOR is the author of the app stored in the SMDH file (Optional)
# ICON is the filename of the icon (.png), relative to the project folder.
# If not set, it attempts to use one of the following (in this order):
# - <Project name>.png
# - icon.png
# - <libctru folder>/default_icon.png
#---------------------------------------------------------------------------------
TARGET := ctroller
BUILD := build
SOURCES := source
DATA := data
INCLUDES := include
RESOURCES := resources
ICON := $(RESOURCES)/icon.png
VERSION_MAJOR := 0
VERSION_MINOR := 1
VERSION_PATCH := 0
APP_TITLE := $(TARGET)
APP_DESCRIPTION := Use your 3DS as PC gamepad
APP_AUTHOR := phijor
DSHOSTNAME := n3ds
DSIP := $(shell getent hosts $(DSHOSTNAME) | awk '{print $$1}')
#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH := -march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
CFLAGS := -g -Wall -Wextra -O2 -mword-relocations \
-fomit-frame-pointer -ffunction-sections -fshort-enums \
$(ARCH)
CFLAGS += $(INCLUDE)
CFLAGS += -DARM11 -D_3DS \
-DVERSION_MAJOR=$(VERSION_MAJOR) \
-DVERSION_MINOR=$(VERSION_MINOR) \
-DVERSION_PATCH=$(VERSION_PATCH)
CFLAGS_DEBUG := -DDEBUG
CFLAGS_RELEASE := -DNDEBUG -Werror
CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
ASFLAGS := -g $(ARCH)
LDFLAGS = -specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
LIBS := -lctru
#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS := $(CTRULIB)
#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------
export OUTPUT := $(CURDIR)/$(TARGET)
export TOPDIR := $(CURDIR)
export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
$(foreach dir,$(DATA),$(CURDIR)/$(dir))
export DEPSDIR := $(CURDIR)/$(BUILD)
CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
PICAFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.v.pica)))
SHLISTFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.shlist)))
BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
export LD := $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
export LD := $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------
export OFILES := $(addsuffix .o,$(BINFILES)) \
$(PICAFILES:.v.pica=.shbin.o) $(SHLISTFILES:.shlist=.shbin.o) \
$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
-I$(CURDIR)/$(BUILD)
export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
ifeq ($(strip $(ICON)),)
icons := $(wildcard *.png)
ifneq (,$(findstring $(TARGET).png,$(icons)))
export APP_ICON := $(TOPDIR)/$(TARGET).png
else
ifneq (,$(findstring icon.png,$(icons)))
export APP_ICON := $(TOPDIR)/icon.png
endif
endif
else
export APP_ICON := $(TOPDIR)/$(ICON)
endif
ifeq ($(strip $(NO_SMDH)),)
export _3DSXFLAGS += --smdh=$(CURDIR)/$(TARGET).smdh
endif
ifneq ($(ROMFS),)
export _3DSXFLAGS += --romfs=$(CURDIR)/$(ROMFS)
endif
.PHONY: $(BUILD) clean all
#---------------------------------------------------------------------------------
all: release
.PHONY: release
release: export CFLAGS += $(CFLAGS_RELEASE) $(INCLUDE)
release: $(BUILD)
#---------------------------------------------------------------------------------
.PHONY: debug
debug: export CFLAGS += $(CFLAGS_DEBUG) $(INCLUDE)
debug: export APP_TITLE := $(addsuffix -debug, $(APP_TITLE))
debug: $(BUILD)
#---------------------------------------------------------------------------------
$(BUILD):
@[ -d $@ ] || mkdir -p $@
@$(MAKE) -e --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
#---------------------------------------------------------------------------------
clean:
@echo clean ...
@rm -fr $(BUILD) $(TARGET).3dsx $(OUTPUT).smdh $(TARGET).elf
#---------------------------------------------------------------------------------
run: debug
@echo running ...
@3dslink -r 5 -a $(DSIP) $(OUTPUT).3dsx || true
#---------------------------------------------------------------------------------
install: release
@echo uploading to $(DSIP) ...
@./upload.sh $(DSIP) $(TARGET)
#---------------------------------------------------------------------------------
else
DEPENDS := $(OFILES:.o=.d)
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
ifeq ($(strip $(NO_SMDH)),)
$(OUTPUT).3dsx : $(OUTPUT).elf $(OUTPUT).smdh
else
$(OUTPUT).3dsx : $(OUTPUT).elf
endif
$(OUTPUT).elf : $(OFILES)
#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o : %.bin
#---------------------------------------------------------------------------------
@echo $(notdir $<)
@$(bin2o)
#---------------------------------------------------------------------------------
# rules for assembling GPU shaders
#---------------------------------------------------------------------------------
define shader-as
$(eval CURBIN := $(patsubst %.shbin.o,%.shbin,$(notdir $@)))
picasso -o $(CURBIN) $1
bin2s $(CURBIN) | $(AS) -o $@
echo "extern const u8" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"_end[];" > `(echo $(CURBIN) | tr . _)`.h
echo "extern const u8" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"[];" >> `(echo $(CURBIN) | tr . _)`.h
echo "extern const u32" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`_size";" >> `(echo $(CURBIN) | tr . _)`.h
endef
%.shbin.o : %.v.pica %.g.pica
@echo $(notdir $^)
@$(call shader-as,$^)
%.shbin.o : %.v.pica
@echo $(notdir $<)
@$(call shader-as,$<)
%.shbin.o : %.shlist
@echo $(notdir $<)
@$(call shader-as,$(foreach file,$(shell cat $<),$(dir $<)/$(file)))
-include $(DEPENDS)
#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------

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3DS/ctroller.cfg Normal file
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192.0.2.0

103
3DS/include/ctroller.h Normal file
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#ifndef CTROLLER_H
#define CTROLLER_H
#include <stddef.h>
#include "hid.h"
#define _STRINGIFY(a) #a
#define STRINGIFY(a) _STRINGIFY(a)
#if !defined(VERSION_MAJOR) || !defined(VERSION_MINOR) || \
!defined(VERSION_PATCH)
#error "VERSION_[MAJOR|MINOR|PATCH] not defined."
#endif
#define VERSION \
STRINGIFY(VERSION_MAJOR) \
"." STRINGIFY(VERSION_MINOR) "." STRINGIFY(VERSION_PATCH)
#ifdef DEBUG
#define VERSION_BUILD VERSION " debug"
#else
#define VERSION_BUILD VERSION
#endif /* ----- #ifdef DEBUG ----- */
#define MAKEBCDVER(major, minor, patch) \
((major & 0xf) << 8 | (minor & 0xf) << 4 | (patch & 0xf))
/** Location of the config directory on the SD card
**/
#define CFG_DIR "/ctroller/"
/** Location of the config file on the SD card
**/
#define CFG_FILE CFG_DIR "ctroller.cfg"
/** Port of the server to connect to.
**/
#define CFG_PORT "15708"
/** Initialize the ctroller client
**/
Result ctrollerInit(void);
/** Exit the ctroller client and clean up ressources
**/
void ctrollerExit(void);
/** Read the server IP from a file
*
* @param ipstr Pointer to array of chars to be filled with the server IP
* @param len Max. ammmount of bytes to be read from the file
* @param path Location of the file to read from on the SD
*
* @returns 0 on success
* @returns < 0 on failure
**/
int ctrollerReadServerIP(char *ipstr, size_t len, const char *path);
/** Magic constant identifying a ctroller packet
**/
#define PACKET_MAGIC 0x3d5c
/** Constant identifying a packet version
*
* This value is represented in a BCD (binary-coded decimal) format.
* I.e. '0x0123' stands for version 1.2.3
**/
#define PACKET_VERSION MAKEBCDVER(VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH)
/** Minimum number of bytes per package
*
* A package consists of metadata (magic value + version info) and the
* contents of a hidinfo structure encoded in network byte order.
**/
#define PACKET_SIZE (2 * sizeof(uint16_t) + sizeof(struct hidInfo))
/** A network packet that can hold all HID information collected
**/
typedef uint8_t packet_hid_t[PACKET_SIZE];
struct hidInfo;
/** Write HID info into a packet ready to be sent
*
* @param packet Buffer to pack HID info into
* @param hidinfo HID info collected from the system
*
* @returns Number of bytes written to packet
**/
int ctrollerPackHIDInfo(packet_hid_t packet, const struct hidInfo *hid);
/** Send data to the server
*
* @param buf Pointer to data to be sent
* @param len Number of bytes to be sent
**/
int ctrollerSend(const void *buf, size_t len);
/** Collect and send HID information to the server
**/
int ctrollerSendHIDInfo(void);
#endif /* ----- #ifndef CTROLLER_H ----- */

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#ifndef HID_H
#define HID_H
#include <stdint.h>
#include <3ds/types.h>
#include <3ds/services/hid.h>
struct hidInfo {
struct {
u32 up;
u32 down;
u32 held;
} keys;
circlePosition circlepad;
circlePosition cstick;
touchPosition touchscreen;
angularRate gyro;
};
int hidCollectData(struct hidInfo*);
#endif /* ----- #ifndef HID_H ----- */

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#ifndef UTIL_H
#define UTIL_H
#include <3ds/result.h>
#include <3ds/console.h>
#define inc_mod(a, b) (a = ((a) + 1) % (b))
#define dec_mod(a, b) (a = ((a) + (b) -1) % (b))
#define sizeof_member(s, m) sizeof(((s *) 0)->m)
#define sizeof_array(a) sizeof(a) / sizeof(a[0])
#define UTIL_STR_SUCCESS(s) CONSOLE_GREEN s CONSOLE_RESET
#define UTIL_STR_FAILURE(s) CONSOLE_RED s CONSOLE_RESET
#define CONSOLE_REVERSE CONSOLE_ESC(7m)
#ifdef DEBUG
#undef NDEBUG
#endif
#ifdef NDEBUG
#undef DEBUG
#endif
#if !defined(DEBUG) && !defined(NDEBUG)
#define DEBUG
#endif
#ifdef DEBUG
extern Result util_debug_result;
#define util_debug_exec(task) \
do { \
util_debug_printf(__FILE__ "@l%d:\n " #task "\n", __LINE__); \
if ((util_debug_result = task)) { \
util_debug_printf(UTIL_STR_FAILURE(" Failed: %ld.\n"), \
(long) util_assert_result); \
} \
util_debug_printf(UTIL_STR_SUCCESS(" Success.\n")); \
} while (0);
#else
#define util_debug_exec(task) \
do { \
task; \
} while (0);
#endif
extern PrintConsole debug;
void util_debug_init(void);
void util_hang(Result);
__attribute__((format(printf, 1, 2))) void
util_debug_printf(const char *restrict fmt, ...);
void util_perror(const char *msg);
void util_presult(const char *msg, Result res);
void util_debug_print_delim(void);
#endif /* ----- #ifndef UTIL_H ----- */

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196
3DS/source/ctroller.c Normal file
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@ -0,0 +1,196 @@
#include "ctroller.h"
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "util.h"
#include "hid.h"
struct peer {
int socket;
struct addrinfo *addr_list;
struct addrinfo *addr;
};
static struct peer SERVER = {
.socket = -1, .addr_list = NULL, .addr = NULL,
};
// static int isNew3DS = 0;
Result ctrollerInit(void)
{
int res = 0;
struct sockaddr_in ctroller_addr = {};
ctroller_addr.sin_family = AF_INET;
ctroller_addr.sin_addr.s_addr = gethostid();
struct addrinfo hints = {};
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_flags = 0;
char ctroller_ip[INET_ADDRSTRLEN];
char server_ip[INET_ADDRSTRLEN];
if (ctrollerReadServerIP(server_ip, INET_ADDRSTRLEN, CFG_FILE) < 0) {
util_perror("Reading server IP");
return MAKERESULT(RL_USAGE, RS_NOTFOUND, RM_APPLICATION, RD_NOT_FOUND);
}
util_debug_printf("Initializing ctroller...\n"
"- Version: " VERSION_BUILD " (" __DATE__ ")\n"
"- Config: " CFG_FILE "\n"
"- Client: %s\n"
"- Server: %s\n"
"- Port: " CFG_PORT "\n",
inet_ntop(ctroller_addr.sin_family,
&ctroller_addr.sin_addr,
ctroller_ip,
INET_ADDRSTRLEN),
server_ip);
if ((res = getaddrinfo(server_ip, CFG_PORT, &hints, &SERVER.addr_list))) {
util_debug_printf("getaddrinfo: %s\n", gai_strerror(res));
errno = EADDRNOTAVAIL;
return MAKERESULT(
RL_PERMANENT, RS_NOTFOUND, RM_APPLICATION, RD_NOT_FOUND);
}
struct addrinfo *inf = SERVER.addr_list;
for (; inf != NULL; inf = inf->ai_next) {
SERVER.socket =
socket(inf->ai_family, inf->ai_socktype, inf->ai_protocol);
if (SERVER.socket < 0) {
util_perror("socket");
continue;
}
break;
}
if (inf == NULL || SERVER.socket < 0) {
freeaddrinfo(SERVER.addr_list);
SERVER.addr_list = NULL;
errno = EADDRNOTAVAIL;
return MAKERESULT(
RL_PERMANENT, RS_NOTFOUND, RM_APPLICATION, RD_NOT_FOUND);
}
SERVER.addr = inf;
return SERVER.socket;
}
int ctrollerReadServerIP(char *ipstr, size_t len, const char *path)
{
FILE *fp;
fp = fopen(path, "r");
if (fp == NULL) {
return -1;
}
int res = 0;
if (fgets(ipstr, len, fp) == NULL) {
res = -1;
}
fclose(fp);
/* Trim trailing newline character */
char *lf = strchr(ipstr, '\n');
if (lf != NULL) {
*lf = '\0';
}
return res;
}
int ctrollerSend(const void *buf, size_t len)
{
return sendto(SERVER.socket,
buf,
len,
0,
SERVER.addr->ai_addr,
SERVER.addr->ai_addrlen);
}
int ctrollerSendHIDInfo(void)
{
int res = 0;
struct hidInfo hid;
res = hidCollectData(&hid);
if (res) {
util_debug_printf("Error reading HID peerinfo.\n");
return res;
}
packet_hid_t packet;
ctrollerPackHIDInfo(packet, &hid);
res = ctrollerSend(packet, PACKET_SIZE);
if (res == -1) {
util_perror("HID send");
}
if (res > 0) {
res = 0;
}
return res;
}
#define CTROLLER_PACK_DEFINE(type, packer) \
static inline uint8_t *pack_##type(uint8_t *buf, type val) \
{ \
type *target = (type *) buf; \
*target = packer(val); \
return buf + sizeof(type); \
}
CTROLLER_PACK_DEFINE(int16_t, htons);
CTROLLER_PACK_DEFINE(uint16_t, htons);
CTROLLER_PACK_DEFINE(uint32_t, htonl);
#undef CTROLLER_PACK_DEFINE
int ctrollerPackHIDInfo(packet_hid_t packet, const struct hidInfo *hid)
{
uint8_t *bufptr = packet;
bufptr = pack_uint16_t(bufptr, PACKET_MAGIC);
bufptr = pack_uint16_t(bufptr, PACKET_VERSION);
bufptr = pack_uint32_t(bufptr, hid->keys.up);
bufptr = pack_uint32_t(bufptr, hid->keys.down);
bufptr = pack_uint32_t(bufptr, hid->keys.held);
bufptr = pack_uint16_t(bufptr, hid->touchscreen.px);
bufptr = pack_uint16_t(bufptr, hid->touchscreen.py);
bufptr = pack_int16_t(bufptr, hid->circlepad.dx);
bufptr = pack_int16_t(bufptr, hid->circlepad.dy);
bufptr = pack_int16_t(bufptr, hid->cstick.dx);
bufptr = pack_int16_t(bufptr, hid->cstick.dy);
bufptr = pack_int16_t(bufptr, hid->gyro.x);
bufptr = pack_int16_t(bufptr, hid->gyro.y);
bufptr = pack_int16_t(bufptr, hid->gyro.z);
return bufptr - packet;
}
void ctrollerExit(void)
{
freeaddrinfo(SERVER.addr_list);
SERVER.addr_list = NULL;
SERVER.addr = NULL;
close(SERVER.socket);
SERVER.socket = -1;
return;
}

19
3DS/source/hid.c Normal file
View file

@ -0,0 +1,19 @@
#include "hid.h"
#include <3ds/result.h>
#include <3ds/services/hid.h>
#include <3ds/services/irrst.h>
int hidCollectData(struct hidInfo *info)
{
info->keys.up = hidKeysUp();
info->keys.down = hidKeysDown();
info->keys.held = hidKeysHeld();
hidTouchRead(&info->touchscreen);
hidCircleRead(&info->circlepad);
hidGyroRead(&info->gyro);
hidCstickRead(&info->cstick);
return 0;
}

143
3DS/source/main.c Normal file
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@ -0,0 +1,143 @@
/*
* ctroller -- use your 3DS as a gamepad on your PC
* Copyright (C) 2016 Philipp Joram (phijor)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ctroller.h"
#include "util.h"
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <3ds/result.h>
#include <3ds/console.h>
#include <3ds/services/apt.h>
#include <3ds/services/hid.h>
#include <3ds/services/soc.h>
#include <3ds/services/ac.h>
#include <3ds/services/irrst.h>
#ifdef DEBUG
#define EXIT_KEYS (KEY_START | KEY_SELECT)
#define EXIT_DESC "START+SELECT"
#else
#define EXIT_KEYS (KEY_START | KEY_DUP | KEY_L | KEY_B)
#define EXIT_DESC "START+UP+L+B"
#endif
#define SOCU_BUFSZ 0x100000
#define SOCU_ALIGN 0x1000
static u32 *sock_ctx = NULL;
int main(int argc, char **argv)
{
(void) argc, (void) argv;
Result res = MAKERESULT(RL_SUCCESS, RS_SUCCESS, 0, RD_SUCCESS);
gfxInitDefault();
PrintConsole top;
consoleInit(GFX_TOP, &top);
util_debug_init();
consoleSelect(&top);
if (R_FAILED(res = acInit())) {
util_presult("acInit failed", res);
goto ac_failure;
}
if ((sock_ctx = memalign(SOCU_BUFSZ, SOCU_ALIGN)) == NULL) {
util_perror("Allocating SOC buffer");
res = MAKERESULT(
RL_PERMANENT, RS_OUTOFRESOURCE, RM_SOC, RD_OUT_OF_MEMORY);
goto soc_alloc_failure;
}
if (R_FAILED(res = socInit(sock_ctx, SOCU_BUFSZ))) {
util_presult("socInit failed", res);
goto soc_failure;
}
u32 wifi = 0;
if (R_FAILED(res = ACU_GetWifiStatus(&wifi))) {
util_presult("ACU_GetWifiStatus failed", res);
util_debug_printf("Did you enable Wifi?\n");
goto failure;
}
if (!wifi) {
util_debug_printf("Wifi disabled.\n");
goto failure;
}
u8 isNew3DS = 0;
APT_CheckNew3DS(&isNew3DS);
util_debug_printf("Running on %s3DS.\n", isNew3DS ? "New" : "Old");
if (isNew3DS && R_FAILED(res = irrstInit())) {
util_presult("irrstInit failed", res);
goto irsst_failure;
}
if (R_FAILED(res = ctrollerInit())) {
puts("Do you have a valid IP in\n '" CFG_FILE "'?");
goto failure;
}
printf("Press " EXIT_DESC " to exit.\n");
fflush(stdout);
u32 keys = 0;
while (aptMainLoop()) {
hidScanInput();
keys = hidKeysHeld();
if (keys == EXIT_KEYS) {
res = RL_SUCCESS;
break;
}
if (ctrollerSendHIDInfo()) {
util_perror("Sending HID info");
}
gspWaitForVBlank();
gfxFlushBuffers();
gfxSwapBuffers();
}
puts("Exiting...");
failure:
irrstExit();
irsst_failure:
socExit();
soc_failure:
free(sock_ctx);
soc_alloc_failure:
acExit();
ac_failure:
gfxExit();
if (R_FAILED(res)) {
util_hang(res);
}
return res;
}

95
3DS/source/util.c Normal file
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@ -0,0 +1,95 @@
#include "util.h"
#include <3ds/services/hid.h>
#include <3ds/console.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
Result util_debug_result;
PrintConsole debug;
void util_hang(Result res)
{
util_debug_printf("An error occured (0x%08lx).\n"
"Press START to exit.\n",
(long) res);
while (1) {
hidScanInput();
if (hidKeysDown() & KEY_START)
break;
gspWaitForVBlank();
gfxFlushBuffers();
gfxSwapBuffers();
}
}
void util_debug_init()
{
#ifdef DEBUG
util_debug_result = 0;
#endif
consoleInit(GFX_BOTTOM, &debug);
consoleSetWindow(&debug, 0, 0, 40, 30);
consoleDebugInit(debugDevice_CONSOLE);
}
__attribute__((format(printf, 1, 2))) void
util_debug_printf(const char *restrict fmt, ...)
{
PrintConsole *tmp = consoleSelect(&debug);
va_list ap;
va_start(ap, fmt);
vprintf(fmt, ap);
va_end(ap);
fflush(stderr);
consoleSelect(tmp);
}
void util_perror(const char *msg)
{
char *delim = (msg == NULL) ? "" : ": ";
char *color = (errno == 0) ? CONSOLE_GREEN : CONSOLE_RED;
PrintConsole *tmp = consoleSelect(&debug);
fprintf(stderr,
"%s%s%s%s" CONSOLE_RESET "\n",
msg,
delim,
color,
strerror(errno));
fflush(stderr);
consoleSelect(tmp);
}
void util_presult(const char *msg, Result res)
{
char *delim = (msg == NULL) ? "" : ": ";
char *color = R_SUCCEEDED(res) ? CONSOLE_GREEN : CONSOLE_RED;
PrintConsole *tmp = consoleSelect(&debug);
fprintf(stderr,
"Error %s0x%08x" CONSOLE_RESET "%s%s\n",
color,
(unsigned int) res,
delim,
msg);
fflush(stderr);
consoleSelect(tmp);
}
void util_debug_print_delim()
{
PrintConsole *tmp = consoleSelect(&debug);
for (int i = 0; i < debug.windowWidth; i++) {
putchar('=');
}
consoleSelect(tmp);
}

24
3DS/upload.sh Executable file
View file

@ -0,0 +1,24 @@
#/usr/bin/env bash
if [ $# -ne 2 ]; then
echo "Usage:"
echo " $(basename $0) host application"
exit 1
fi
HOST=$1
TARGET=$2
DSPORT=5000
HOMEBREWDIR="/3ds"
ftp -i $HOST $DSPORT > /dev/null <<EOF
anonymous
mdelete ${HOMEBREWDIR}/${TARGET}
rmdir ${HOMEBREWDIR}/${TARGET}
mkdir ${HOMEBREWDIR}/${TARGET}
put ${TARGET}.3dsx ${HOMEBREWDIR}/${TARGET}/${TARGET}.3dsx
put ${TARGET}.smdh ${HOMEBREWDIR}/${TARGET}/${TARGET}.smdh
EOF

674
LICENSE Normal file
View file

@ -0,0 +1,674 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
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protecting users' freedom to change the software. The systematic
pattern of such abuse occurs in the area of products for individuals to
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have designed this version of the GPL to prohibit the practice for those
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stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-free.
The precise terms and conditions for copying, distribution and
modification follow.
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A "covered work" means either the unmodified Program or a work based
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You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.
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terms of section 4, provided that you also meet all of these conditions:
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b) The work must carry prominent notices stating that it is
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License will therefore apply, along with any applicable section 7
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7. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law. If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
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All other non-permissive additional terms are considered "further
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Additional terms, permissive or non-permissive, may be stated in the
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the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
run a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
modify any covered work. These actions infringe copyright if you do
not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

23
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all: linux 3ds
.PHONY: install
install: linux
@echo -e "\e[1mInstalling linux executable...\e[0m"
@$(MAKE) -C linux install
.PHONY: linux
linux:
@echo -e "\e[1mBuilding linux executable...\e[0m"
@$(MAKE) -C linux
.PHONY: 3ds
3ds:
@echo -e "\e[1mBuilding 3DS application...\e[0m"
@$(MAKE) -C 3DS
.PHONY: clean
clean:
@echo "Cleaning..."
@$(MAKE) -C linux clean
@$(MAKE) -C 3DS clean
@$(RM) -r dist

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@ -0,0 +1,72 @@
# ctroller
*ctroller* lets you use your 3DS as an input device for your Linux system via
the uinput kernel module. It consists of a client that runs on your 3DS,
continously streaming the 3DS input data to a server on your PC. The server
exposes a virtual device to your system, interpretes the data it receives and
writes it to a event node under `/dev/input/event*` or similar.
## Prerequisites
You will need
[DevkitARM](https://sourceforge.net/projects/devkitpro/files/devkitARM/) and the
[ctrulib](https://github.com/smealum/ctrulib) to build the 3DS component.
To run the server, the `uinput` kernel module needs to be loaded:
```bash
$ modprobe uinput
```
## Building
Run `make` to build both components, or enter either of the `3DS`/`linux`
subdirectories to build them individually by running `make` there. You can use
the `debug` target for development.
## Installation
1. Install the server to your system by running `make install`. This is equivalent
to:
```bash
$ cd linux
$ make install DESTDIR="/" BINDIR="usr/bin"
```
2. build the 3DS application:
```bash
$ cd 3DS
$ make release
```
3. Copy `3DS/ctroller.{3dsx,smdh}` to `/3ds/ctroller/` on your SD card. You can
also directly upload the application to your 3DS using
[upload.sh](./3DS/upload.sh) (do not blindly execute unknown scrips, I'm not
responsible if this accidentally deletes your SD card or unfreezes your
fridge). To do so, start a FTP server (such as
[ftpd](https://github.com/mtheall/ftpd)) on your 3DS on port 5000, then run:
```bash
$ cd 3DS
$ make upload DSIP=<IP of your 3DS here>
```
This requires `ftp` to be installed on your system.
4. Create a directory `ctroller` in the root of your SD card
5. **Place [3DS/ctroller.cfg](./3DS/ctroller.cfg) in there and replace the IP
with the one of your PC.** (The config file should now be at
`sdmc:/ctroller/ctroller.cfg`)
## Running
Start the server by running:
```bash
$ ./linux/ctroller
```
Then launch the *ctroller.3dsx* application on your 3DS using a homebrew
launcher of your choice.
For development purposes, the 3DS-Makefile includes a `run` target that uses
`3dslink` to upload and run the application using the Homebrew Menu NetLoader.

67
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---
Language: Cpp
# BasedOnStyle: LLVM
AccessModifierOffset: -2
AlignAfterOpenBracket: true
AlignConsecutiveAssignments: true
AlignEscapedNewlinesLeft: false
AlignOperands: true
AlignTrailingComments: true
AllowAllParametersOfDeclarationOnNextLine: true
AllowShortBlocksOnASingleLine: false
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: Inline
AllowShortIfStatementsOnASingleLine: false
AllowShortLoopsOnASingleLine: false
AlwaysBreakAfterDefinitionReturnType: None
AlwaysBreakBeforeMultilineStrings: false
AlwaysBreakTemplateDeclarations: false
BinPackArguments: false
BinPackParameters: false
BreakBeforeBinaryOperators: None
BreakBeforeBraces: Linux
BreakBeforeTernaryOperators: true
BreakConstructorInitializersBeforeComma: false
ColumnLimit: 80
CommentPragmas: '^ IWYU pragma:'
ConstructorInitializerAllOnOneLineOrOnePerLine: true
ConstructorInitializerIndentWidth: 4
ContinuationIndentWidth: 4
Cpp11BracedListStyle: true
DerivePointerAlignment: false
DisableFormat: false
ExperimentalAutoDetectBinPacking: false
ForEachMacros: [ foreach, Q_FOREACH, BOOST_FOREACH ]
IndentCaseLabels: false
IndentWidth: 4
IndentWrappedFunctionNames: false
KeepEmptyLinesAtTheStartOfBlocks: true
MacroBlockBegin: ''
MacroBlockEnd: ''
MaxEmptyLinesToKeep: 1
NamespaceIndentation: None
ObjCBlockIndentWidth: 2
ObjCSpaceAfterProperty: false
ObjCSpaceBeforeProtocolList: true
PenaltyBreakBeforeFirstCallParameter: 19
PenaltyBreakComment: 300
PenaltyBreakFirstLessLess: 120
PenaltyBreakString: 1000
PenaltyExcessCharacter: 1000000
PenaltyReturnTypeOnItsOwnLine: 60
PointerAlignment: Right
SpaceAfterCStyleCast: true
SpaceBeforeAssignmentOperators: true
SpaceBeforeParens: ControlStatements
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 1
SpacesInAngles: false
SpacesInContainerLiterals: true
SpacesInCStyleCastParentheses: false
SpacesInParentheses: false
SpacesInSquareBrackets: false
Standard: Cpp11
TabWidth: 8
UseTab: Never
...

144
linux/.ycm_extra_conf.py Normal file
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@ -0,0 +1,144 @@
# Generated by YCM Generator at 2016-04-12 21:02:30.885238
# This file is NOT licensed under the GPLv3, which is the license for the rest
# of YouCompleteMe.
#
# Here's the license text for this file:
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# For more information, please refer to <http://unlicense.org/>
import os
import ycm_core
flags = [
'-x',
'c',
'-D',
'-Wall',
'-Wextra',
'-I', 'include/',
'-I', '/usr/include',
'--sysroot=/usr',
'-fsanitize=undefined',
]
# Set this to the absolute path to the folder (NOT the file!) containing the
# compile_commands.json file to use that instead of 'flags'. See here for
# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
#
# You can get CMake to generate this file for you by adding:
# set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
# to your CMakeLists.txt file.
#
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
compilation_database_folder = ''
if os.path.exists( compilation_database_folder ):
database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
database = None
SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
def DirectoryOfThisScript():
return os.path.dirname( os.path.abspath( __file__ ) )
def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
if not working_directory:
return list( flags )
new_flags = []
make_next_absolute = False
path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
for flag in flags:
new_flag = flag
if make_next_absolute:
make_next_absolute = False
if not flag.startswith( '/' ):
new_flag = os.path.join( working_directory, flag )
for path_flag in path_flags:
if flag == path_flag:
make_next_absolute = True
break
if flag.startswith( path_flag ):
path = flag[ len( path_flag ): ]
new_flag = path_flag + os.path.join( working_directory, path )
break
if new_flag:
new_flags.append( new_flag )
return new_flags
def IsHeaderFile( filename ):
extension = os.path.splitext( filename )[ 1 ]
return extension in [ '.h', '.hxx', '.hpp', '.hh' ]
def GetCompilationInfoForFile( filename ):
# The compilation_commands.json file generated by CMake does not have entries
# for header files. So we do our best by asking the db for flags for a
# corresponding source file, if any. If one exists, the flags for that file
# should be good enough.
if IsHeaderFile( filename ):
basename = os.path.splitext( filename )[ 0 ]
for extension in SOURCE_EXTENSIONS:
replacement_file = basename + extension
if os.path.exists( replacement_file ):
compilation_info = database.GetCompilationInfoForFile(
replacement_file )
if compilation_info.compiler_flags_:
return compilation_info
return None
return database.GetCompilationInfoForFile( filename )
def FlagsForFile( filename, **kwargs ):
if database:
# Bear in mind that compilation_info.compiler_flags_ does NOT return a
# python list, but a "list-like" StringVec object
compilation_info = GetCompilationInfoForFile( filename )
if not compilation_info:
return None
final_flags = MakeRelativePathsInFlagsAbsolute(
compilation_info.compiler_flags_,
compilation_info.compiler_working_dir_ )
else:
relative_to = DirectoryOfThisScript()
final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
return {
'flags': final_flags,
'do_cache': True
}

199
linux/Makefile Normal file
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#### PROJECT SETTINGS ####
# The name of the executable to be created
BIN_NAME := ctroller
# Compiler used
CC ?= gcc
# Extension of source files used in the project
SRC_EXT = c
# Path to the source directory, relative to the makefile
SRC_PATH = src
# Space-separated pkg-config libraries used by this project
LIBS =
# General compiler flags
COMPILE_FLAGS = -Wall -Wextra -fstrict-aliasing
# Additional release-specific flags
RCOMPILE_FLAGS = -D NDEBUG -O2
# Additional debug-specific flags
DCOMPILE_FLAGS = -D DEBUG -g -Og
# Add additional include paths
INCLUDES = -I include/
# General linker settings
LINK_FLAGS =
# Additional release-specific linker settings
RLINK_FLAGS =
# Additional debug-specific linker settings
DLINK_FLAGS =
# Destination directory, like a jail or mounted system
DESTDIR = /
# Install path
BINDIR = usr/bin
#### END PROJECT SETTINGS ####
# Generally should not need to edit below this line
# Shell used in this makefile
# bash is used for 'echo -en'
SHELL = /bin/bash
# Clear built-in rules
.SUFFIXES:
# Programs for installation
INSTALL = install
INSTALL_PROGRAM = $(INSTALL) -m 755
INSTALL_DATA = $(INSTALL) -m 644
# Append pkg-config specific libraries if need be
ifneq ($(LIBS),)
COMPILE_FLAGS += $(shell pkg-config --cflags $(LIBS))
LINK_FLAGS += $(shell pkg-config --libs $(LIBS))
endif
# Verbose option, to output compile and link commands
export V := false
export CMD_PREFIX := @
ifeq ($(V),true)
CMD_PREFIX :=
endif
# Combine compiler and linker flags
release: export CFLAGS := $(CFLAGS) $(COMPILE_FLAGS) $(RCOMPILE_FLAGS)
release: export LDFLAGS := $(LDFLAGS) $(LINK_FLAGS) $(RLINK_FLAGS)
debug: export CFLAGS := $(CFLAGS) $(COMPILE_FLAGS) $(DCOMPILE_FLAGS)
debug: export LDFLAGS := $(LDFLAGS) $(LINK_FLAGS) $(DLINK_FLAGS)
# Build and output paths
release: export BUILD_PATH := build/release
release: export BIN_PATH := bin/release
debug: export BUILD_PATH := build/debug
debug: export BIN_PATH := bin/debug
install: export BIN_PATH := bin/release
# Find all source files in the source directory, sorted by most
# recently modified
SOURCES = $(shell find $(SRC_PATH)/ -name '*.$(SRC_EXT)' -printf '%T@\t%p\n' \
| sort -k 1nr | cut -f2-)
# fallback in case the above fails
rwildcard = $(foreach d, $(wildcard $1*), $(call rwildcard,$d/,$2) \
$(filter $(subst *,%,$2), $d))
ifeq ($(SOURCES),)
SOURCES := $(call rwildcard, $(SRC_PATH)/, *.$(SRC_EXT))
endif
# Set the object file names, with the source directory stripped
# from the path, and the build path prepended in its place
OBJECTS = $(SOURCES:$(SRC_PATH)/%.$(SRC_EXT)=$(BUILD_PATH)/%.o)
# Set the dependency files that will be used to add header dependencies
DEPS = $(OBJECTS:.o=.d)
# Macros for timing compilation
TIME_FILE = $(dir $@).$(notdir $@)_time
START_TIME = date '+%s' > $(TIME_FILE)
END_TIME = read st < $(TIME_FILE) ; \
$(RM) $(TIME_FILE) ; \
st=$$((`date '+%s'` - $$st - 86400)) ; \
echo `date -u -d @$$st '+%Hh%Mm%Ss'`
# Version macros
# Comment/remove this section to remove versioning
USE_VERSION := false
# If this isn't a git repo or the repo has no tags, git describe will return non-zero
ifeq ($(shell git describe > /dev/null 2>&1 ; echo $$?), 0)
USE_VERSION := true
VERSION := $(shell git describe --tags --long --dirty --always | \
sed 's/v\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)-\?.*-\([0-9]*\)-\(.*\)/\1 \2 \3 \4 \5/g')
VERSION_MAJOR := $(word 1, $(VERSION))
VERSION_MINOR := $(word 2, $(VERSION))
VERSION_PATCH := $(word 3, $(VERSION))
VERSION_REVISION := $(word 4, $(VERSION))
VERSION_HASH := $(word 5, $(VERSION))
VERSION_STRING := \
"$(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_PATCH).$(VERSION_REVISION)-$(VERSION_HASH)"
override CFLAGS := $(CFLAGS) \
-D VERSION_MAJOR=$(VERSION_MAJOR) \
-D VERSION_MINOR=$(VERSION_MINOR) \
-D VERSION_PATCH=$(VERSION_PATCH) \
-D VERSION_REVISION=$(VERSION_REVISION) \
-D VERSION_HASH=\"$(VERSION_HASH)\"
endif
# Standard, non-optimized release build
.PHONY: release
release: dirs
ifeq ($(USE_VERSION), true)
@echo "Beginning release build v$(VERSION_STRING)"
else
@echo "Beginning release build"
endif
@$(START_TIME)
@$(MAKE) all --no-print-directory
@echo -n "Total build time: "
@$(END_TIME)
# Debug build for gdb debugging
.PHONY: debug
debug: dirs
ifeq ($(USE_VERSION), true)
@echo "Beginning debug build v$(VERSION_STRING)"
else
@echo "Beginning debug build"
endif
@$(START_TIME)
@$(MAKE) all --no-print-directory
@echo -n "Total build time: "
@$(END_TIME)
# Create the directories used in the build
.PHONY: dirs
dirs:
@echo "Creating directories"
@mkdir -p $(dir $(OBJECTS))
@mkdir -p $(BIN_PATH)
# Installs to the set path
.PHONY: install
install: release
@echo "Installing to $(DESTDIR)$(BINDIR)"
@mkdir -p $(DESTDIR)$(BINDIR)
@$(INSTALL_PROGRAM) $(BIN_PATH)/$(BIN_NAME) $(DESTDIR)$(BINDIR)
# Uninstalls the program
.PHONY: uninstall
uninstall:
@echo "Removing $(DESTDIR)$(BINDIR)/$(BIN_NAME)"
@$(RM) $(DESTDIR)$(BINDIR)/$(BIN_NAME)
# Removes all build files
.PHONY: clean
clean:
@echo "Deleting $(BIN_NAME) symlink"
@$(RM) $(BIN_NAME)
@echo "Deleting directories"
@$(RM) -r build
@$(RM) -r bin
# Main rule, checks the executable and symlinks to the output
all: $(BIN_PATH)/$(BIN_NAME)
@echo "Making symlink: $(BIN_NAME) -> $<"
@$(RM) $(BIN_NAME)
@ln -s $(BIN_PATH)/$(BIN_NAME) $(BIN_NAME)
# Link the executable
$(BIN_PATH)/$(BIN_NAME): $(OBJECTS)
@echo "Linking: $@"
@$(START_TIME)
$(CMD_PREFIX)$(CC) $(OBJECTS) $(LDFLAGS) -o $@
@echo -en "\t Link time: "
@$(END_TIME)
# Add dependency files, if they exist
-include $(DEPS)
# Source file rules
# After the first compilation they will be joined with the rules from the
# dependency files to provide header dependencies
$(BUILD_PATH)/%.o: $(SRC_PATH)/%.$(SRC_EXT)
@echo "Compiling: $< -> $@"
@$(START_TIME)
$(CMD_PREFIX)$(CC) $(CFLAGS) $(INCLUDES) -MP -MMD -c $< -o $@
@echo -en "\t Compile time: "
@$(END_TIME)

26
linux/include/ctroller.h Normal file
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#ifndef CTROLLER_H
#define CTROLLER_H
#include <stddef.h>
#include "hid.h"
#define PACKET_MAGIC 0x3d5c
#define PACKET_VERSION 0x0001
#define PACKET_SIZE (2*sizeof(uint16_t) + sizeof(struct hidinfo))
typedef unsigned char packet_hid_t[PACKET_SIZE];
int ctroller_init(void);
int ctroller_listener_init();
int ctroller_uinput_init();
void ctroller_exit(void);
int ctroller_recv(void *buf, size_t len);
int ctroller_poll_hid_info(struct hidinfo *);
int ctroller_unpack_hid_info(unsigned char *sendbuf, struct hidinfo *hid);
int ctroller_write_hid_info(struct hidinfo *hid);
#endif /* ----- #ifndef CTROLLER_H ----- */

75
linux/include/hid.h Normal file
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#ifndef HID_H
#define HID_H
#include <stdint.h>
#define BIT(n) (1 << (n))
#define HID_EVENT_COUNT (14)
#define HID_HAS_KEY(state, key) (((state) & (key)) != 0)
enum {
HID_KEY_A = BIT(0), ///< A
HID_KEY_B = BIT(1), ///< B
HID_KEY_SELECT = BIT(2), ///< Select
HID_KEY_START = BIT(3), ///< Start
HID_KEY_DRIGHT = BIT(4), ///< D-Pad Right
HID_KEY_DLEFT = BIT(5), ///< D-Pad Left
HID_KEY_DUP = BIT(6), ///< D-Pad Up
HID_KEY_DDOWN = BIT(7), ///< D-Pad Down
HID_KEY_R = BIT(8), ///< R
HID_KEY_L = BIT(9), ///< L
HID_KEY_X = BIT(10), ///< X
HID_KEY_Y = BIT(11), ///< Y
HID_KEY_ZL = BIT(14), ///< ZL (New 3DS only)
HID_KEY_ZR = BIT(15), ///< ZR (New 3DS only)
HID_KEY_TOUCH = BIT(20), ///< Touch (Not actually provided by HID)
HID_KEY_CSTICK_RIGHT = BIT(24), ///< C-Stick Right (New 3DS only)
HID_KEY_CSTICK_LEFT = BIT(25), ///< C-Stick Left (New 3DS only)
HID_KEY_CSTICK_UP = BIT(26), ///< C-Stick Up (New 3DS only)
HID_KEY_CSTICK_DOWN = BIT(27), ///< C-Stick Down (New 3DS only)
HID_KEY_CPAD_RIGHT = BIT(28), ///< Circle Pad Right
HID_KEY_CPAD_LEFT = BIT(29), ///< Circle Pad Left
HID_KEY_CPAD_UP = BIT(30), ///< Circle Pad Up
HID_KEY_CPAD_DOWN = BIT(31), ///< Circle Pad Down
// Generic catch-all directions
/// D-Pad Up or Circle Pad Up
HID_KEY_UP = HID_KEY_DUP | HID_KEY_CPAD_UP,
/// D-Pad Down or Circle Pad Down
HID_KEY_DOWN = HID_KEY_DDOWN | HID_KEY_CPAD_DOWN,
/// D-Pad Left or Circle Pad Left
HID_KEY_LEFT = HID_KEY_DLEFT | HID_KEY_CPAD_LEFT,
/// D-Pad Right or Circle Pad Right
HID_KEY_RIGHT = HID_KEY_DRIGHT | HID_KEY_CPAD_RIGHT,
};
struct circlepos {
int16_t dx;
int16_t dy;
};
struct touchpos {
uint16_t px;
uint16_t py;
};
struct gyrorate {
int16_t x;
int16_t y;
int16_t z;
};
struct hidinfo {
uint16_t version;
struct {
uint32_t up;
uint32_t down;
uint32_t held;
} keys;
struct circlepos circlepad;
struct circlepos cstick;
struct touchpos touchscreen;
struct gyrorate gyro;
};
#endif /* ----- #ifndef HID_H ----- */

3
linux/misc/listen.sh Executable file
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#!/usr/bin/env bash
netcat -ulvvp 15708 n3ds | hexdump -f packet.hxfmt

3
linux/misc/packet.hxfmt Normal file
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@ -0,0 +1,3 @@
"0x%06.6_ax_L[yellow] | "
16/2 "%04x_L[green:0x5c3d] "
"\n"

400
linux/src/ctroller.c Normal file
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#include "ctroller.h"
#include <stdio.h>
#include <errno.h>
#include <assert.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/poll.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/uinput.h>
#include <linux/input.h>
#include "hid.h"
#define PORT "15708"
/* Uncomment if you want to see the Gyroscope spam evtest's output. */
// #define USE_GYRO
static int ctroller_socket = 0;
static int ctroller_uinput_device = 0;
struct sockaddr listen_addr;
socklen_t listen_addr_len;
static const struct keymap {
uint16_t keycode;
uint32_t keymask;
const char *desc;
} keymap[] = {
{BTN_TOUCH, HID_KEY_TOUCH, "Touch event"},
{BTN_EAST, HID_KEY_A, "A Button"},
{BTN_SOUTH, HID_KEY_B, "B Button"},
{BTN_NORTH, HID_KEY_X, "X Button"},
{BTN_WEST, HID_KEY_Y, "Y Button"},
{BTN_START, HID_KEY_START, "START Button"},
{BTN_SELECT, HID_KEY_SELECT, "SELECT Button"},
{BTN_TL, HID_KEY_L, "L Button"},
{BTN_TR, HID_KEY_R, "R Button"},
{BTN_TL2, HID_KEY_ZL, "ZL Button"},
{BTN_TR2, HID_KEY_ZR, "ZR Button"},
{BTN_DPAD_UP, HID_KEY_DUP, "D-Pad Up"},
{BTN_DPAD_DOWN, HID_KEY_DDOWN, "D-Pad Down"},
{BTN_DPAD_LEFT, HID_KEY_DLEFT, "D-Pad Left"},
{BTN_DPAD_RIGHT, HID_KEY_DRIGHT, "D-Pad Right"},
};
#define NUMKEYS (sizeof(keymap) / sizeof(keymap[0]))
static const struct axis {
uint16_t axiscode;
const char *desc;
} axis[] = {
{ABS_HAT0X, "Circlepad X-Axis"},
{ABS_HAT0Y, "Circlepad Y-Axis"},
{ABS_HAT1X, "C-Stick X-Axis"},
{ABS_HAT1Y, "C-Stick Y-Axis"},
{ABS_X, "Touchscreen X-Axis"},
{ABS_Y, "Touchscreen Y-Axis"},
#ifdef USE_GYRO
{REL_RX, "Gyroscope X-Axis"},
{REL_RY, "Gyroscope Y-Axis"},
{REL_RZ, "Gyroscope Z-Axis"},
#endif // USE_GYRO
};
#define NUMAXIS (sizeof(axis) / sizeof(axis[0]))
#define NUMEVENTS (NUMKEYS + NUMAXIS + 1)
int ctroller_init()
{
int res;
if ((res = ctroller_listener_init()) < 0) {
fprintf(stderr, "Failed to initialize listener.\n");
return res;
}
if ((res = ctroller_uinput_init()) < 0) {
fprintf(stderr, "Failed to create virtual device.\n");
ctroller_exit();
return res;
}
return 0;
}
int ctroller_listener_init()
{
int res;
struct addrinfo hints = {};
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_flags = AI_PASSIVE;
struct addrinfo *ctroller_info;
if ((res = getaddrinfo(NULL, PORT, &hints, &ctroller_info))) {
fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(res));
return -1;
}
struct addrinfo *addr_info;
ctroller_socket = -1;
for (addr_info = ctroller_info; addr_info != NULL;
addr_info = addr_info->ai_next) {
if ((ctroller_socket = socket(addr_info->ai_family,
addr_info->ai_socktype,
addr_info->ai_protocol)) < 0) {
perror("socket");
continue;
}
if (bind(ctroller_socket, addr_info->ai_addr, addr_info->ai_addrlen) <
0) {
close(ctroller_socket);
perror("bind");
continue;
}
break;
}
if (addr_info == NULL) {
errno = EADDRNOTAVAIL;
return -1;
}
listen_addr = *addr_info->ai_addr;
listen_addr_len = addr_info->ai_addrlen;
freeaddrinfo(ctroller_info);
puts("Listening on port " PORT ".");
return 0;
}
int ctroller_uinput_init()
{
int res = 0;
int uinputfd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
if (uinputfd < 0) {
perror("Error opening uinput device");
return -1;
}
res = ioctl(uinputfd, UI_SET_EVBIT, EV_KEY);
if (res < 0) {
perror("Failed to register event type for keys");
goto failure;
}
for (size_t i = 0; i < NUMKEYS; i++) {
if ((res = ioctl(uinputfd, UI_SET_KEYBIT, keymap[i].keycode)) < 0) {
fprintf(stderr,
"Failed to register %s: %s",
keymap[i].desc,
strerror(errno));
goto failure;
}
}
res = ioctl(uinputfd, UI_SET_EVBIT, EV_ABS);
if (res < 0) {
perror("Failed to register event type for absolute axis "
"(Circlepad/C-Stick/Touchscreen)");
goto failure;
}
for (size_t i = 0; i < NUMAXIS; i++) {
if ((res = ioctl(uinputfd, UI_SET_ABSBIT, axis[i].axiscode)) < 0) {
fprintf(stderr,
"Failed to register %s: %s",
axis[i].desc,
strerror(errno));
goto failure;
}
}
static const struct uinput_user_dev dev3ds = {
.name = "Nintendo 3DS",
.id =
{
.vendor = 0x057e,
.product = 0x0401,
.version = 1,
.bustype = BUS_VIRTUAL,
},
// Circlepad
.absmin[ABS_HAT0X] = -0x9c,
.absmax[ABS_HAT0X] = 0x9c,
.absflat[ABS_HAT0X] = 10,
.absfuzz[ABS_HAT0X] = 3,
.absmin[ABS_HAT0Y] = -0x9c,
.absmax[ABS_HAT0Y] = 0x9c,
.absflat[ABS_HAT0Y] = 10,
.absfuzz[ABS_HAT1Y] = 3,
// C-Stick
.absmin[ABS_HAT1X] = -0x9c,
.absmax[ABS_HAT1X] = 0x9c,
.absflat[ABS_HAT1X] = 10,
.absfuzz[ABS_HAT1X] = 3,
.absmin[ABS_HAT1Y] = -0x9c,
.absmax[ABS_HAT1Y] = 0x9c,
.absflat[ABS_HAT1Y] = 10,
.absfuzz[ABS_HAT0Y] = 3,
// Touchscreen
.absmin[ABS_X] = 0,
.absmax[ABS_X] = 320,
.absflat[ABS_X] = 0,
.absfuzz[ABS_X] = 0,
.absmin[ABS_Y] = 0,
.absmax[ABS_Y] = 240,
.absflat[ABS_Y] = 0,
.absfuzz[ABS_Y] = 0,
};
res = write(uinputfd, &dev3ds, sizeof(dev3ds));
if (res < 0) {
perror("Failed to register virtual device");
goto failure;
}
res = ioctl(uinputfd, UI_DEV_CREATE);
if (res < 0) {
perror("Unable to create virtual device");
goto failure;
}
return ctroller_uinput_device = uinputfd;
failure:
close(uinputfd);
return -1;
}
int ctroller_recv(void *buf, size_t len)
{
return recvfrom(
ctroller_socket, buf, len, 0, &listen_addr, &listen_addr_len);
}
int ctroller_poll_hid_info(struct hidinfo *hid)
{
int res = 0;
packet_hid_t packet __attribute__((aligned(sizeof(uint32_t))));
struct pollfd ufds;
ufds.fd = ctroller_socket;
ufds.events = POLLIN;
res = poll(&ufds, 1, 3 * 1000);
if (res < 0) {
perror("Error polling 3DS");
return -1;
} else if (res == 0) {
// timeout
return 0;
}
if (ufds.revents & (POLLERR | POLLHUP | POLLNVAL)) {
fprintf(stderr, "Polling 3DS: revents indicate error\n");
return -1;
}
if (!(ufds.revents & POLLIN)) {
return 0;
}
res = ctroller_recv(packet, PACKET_SIZE);
if (res < 0) {
perror("Error receiving packet");
return -1;
}
res = ctroller_unpack_hid_info(packet, hid);
return res;
}
inline void *ctroller_unpack_int16_t(unsigned char *buf, int16_t *val)
{
*val = (int16_t) ntohs(*(uint16_t *) buf);
return buf + sizeof(int16_t);
}
inline void *ctroller_unpack_uint16_t(unsigned char *buf, uint16_t *val)
{
*val = ntohs(*(uint16_t *) buf);
return buf + sizeof(uint16_t);
}
inline void *ctroller_unpack_uint32_t(unsigned char *buf, uint32_t *val)
{
*val = ntohl(*(uint32_t *) buf);
return buf + sizeof(uint32_t);
}
inline int ctroller_unpack_hid_info(unsigned char *sendbuf, struct hidinfo *hid)
{
uint16_t magic;
unsigned char *unpack = sendbuf;
unpack = ctroller_unpack_uint16_t(unpack, &magic);
if (magic != PACKET_MAGIC) {
fprintf(stderr, "Invalid package header (%#08x).\n", magic);
return -1;
}
unpack = ctroller_unpack_uint16_t(unpack, &hid->version);
unpack = ctroller_unpack_uint32_t(unpack, &hid->keys.up);
unpack = ctroller_unpack_uint32_t(unpack, &hid->keys.down);
unpack = ctroller_unpack_uint32_t(unpack, &hid->keys.held);
unpack = ctroller_unpack_uint16_t(unpack, &hid->touchscreen.px);
unpack = ctroller_unpack_uint16_t(unpack, &hid->touchscreen.py);
unpack = ctroller_unpack_int16_t(unpack, &hid->circlepad.dx);
unpack = ctroller_unpack_int16_t(unpack, &hid->circlepad.dy);
unpack = ctroller_unpack_int16_t(unpack, &hid->cstick.dx);
unpack = ctroller_unpack_int16_t(unpack, &hid->cstick.dy);
#ifdef USE_GYRO
unpack = ctroller_unpack_int16_t(unpack, &hid->gyro.x);
unpack = ctroller_unpack_int16_t(unpack, &hid->gyro.y);
unpack = ctroller_unpack_int16_t(unpack, &hid->gyro.z);
#endif // USE_GYRO
return unpack - sendbuf;
}
int ctroller_write_hid_info(struct hidinfo *hid)
{
int res;
static struct input_event events[NUMEVENTS];
size_t i = 0;
for (; i < NUMKEYS; i++) {
events[i].type = EV_KEY;
events[i].code = keymap[i].keycode;
events[i].value =
HID_HAS_KEY(hid->keys.held | hid->keys.down, keymap[i].keymask);
}
#define CTROLLER_WRITE_AXIS(ev, idx, axis, src) \
do { \
ev[idx].type = EV_ABS; \
ev[idx].code = axis; \
ev[idx].value = src; \
idx++; \
} while (0)
CTROLLER_WRITE_AXIS(events, i, ABS_HAT0X, hid->circlepad.dx);
CTROLLER_WRITE_AXIS(events, i, ABS_HAT0Y, -hid->circlepad.dy);
CTROLLER_WRITE_AXIS(events, i, ABS_HAT1X, hid->cstick.dx);
CTROLLER_WRITE_AXIS(events, i, ABS_HAT1Y, -hid->cstick.dy);
CTROLLER_WRITE_AXIS(events, i, ABS_X, hid->touchscreen.px);
CTROLLER_WRITE_AXIS(events, i, ABS_Y, hid->touchscreen.py);
#ifdef USE_GYRO
CTROLLER_WRITE_AXIS(events, i, REL_RX, hid->gyro.x);
CTROLLER_WRITE_AXIS(events, i, REL_RY, hid->gyro.y);
CTROLLER_WRITE_AXIS(events, i, REL_RZ, hid->gyro.z);
#endif // USE_GYRO
#undef CTROLLER_WRITE_AXIS
events[i].type = EV_SYN;
events[i].code = SYN_REPORT;
events[i].value = 0;
res = write(ctroller_uinput_device, events, sizeof(events));
if (res < 0) {
perror("Error writing key events");
}
return res;
}
void ctroller_exit()
{
close(ctroller_socket);
ctroller_socket = 0;
ioctl(ctroller_uinput_device, UI_DEV_DESTROY);
ctroller_uinput_device = 0;
return;
}

2
linux/src/hid.c Normal file
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@ -0,0 +1,2 @@
#include "hid.h"

81
linux/src/main.c Normal file
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/*
* ctroller -- use your 3DS as a gamepad on your PC
* Copyright (C) 2016 Philipp Joram (phijor)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include "ctroller.h"
#include "hid.h"
void on_terminate(int signum) {
(void) signum;
puts("Exiting...");
ctroller_exit();
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
(void) argc, (void) argv;
int res = EXIT_SUCCESS;
if (ctroller_init() == -1) {
perror("Error initializing ctroller");
exit(EXIT_FAILURE);
}
if (signal(SIGINT, on_terminate) == SIG_ERR) {
fprintf(stderr, "Failed to register SIGTERM handler.\n");
}
printf("Waiting for incoming packets...\n");
int connected = 0;
struct hidinfo hid = {};
while (1) {
res = ctroller_poll_hid_info(&hid);
if (res < 0) {
fprintf(stderr, "An error occured (%d). Exiting...", res);
fflush(stderr);
res = EXIT_FAILURE;
break;
}
if (res != 0) {
if (!connected) {
printf("Nintendo 3DS connected. (ctroller version "
"%01d.%01d.%01d)\n",
(hid.version & 0x0f00) >> 8,
(hid.version & 0x00f0) >> 4,
(hid.version & 0x000f) >> 0);
connected = 1;
}
ctroller_write_hid_info(&hid);
} else {
connected = 0;
memset(&hid, 0, sizeof(hid));
puts("Timeout waiting for 3DS. Retrying...");
}
}
ctroller_exit();
return res;
}