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Add nfc example. (#45)

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* Add nfc example.
This commit is contained in:
averne 2019-02-18 10:06:20 +09:00 committed by yellows8
parent e0bfaf2329
commit e654fde8f9
2 changed files with 445 additions and 0 deletions
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193
nfc/Makefile Normal file
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#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
endif
TOPDIR ?= $(CURDIR)
include $(DEVKITPRO)/libnx/switch_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
# EXEFS_SRC is the optional input directory containing data copied into exefs, if anything this normally should only contain "main.npdm".
# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional)
#
# NO_ICON: if set to anything, do not use icon.
# NO_NACP: if set to anything, no .nacp file is generated.
# APP_TITLE is the name of the app stored in the .nacp file (Optional)
# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
# APP_VERSION is the version of the app stored in the .nacp file (Optional)
# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
# ICON is the filename of the icon (.jpg), relative to the project folder.
# If not set, it attempts to use one of the following (in this order):
# - <Project name>.jpg
# - icon.jpg
# - <libnx folder>/default_icon.jpg
#---------------------------------------------------------------------------------
TARGET := $(notdir $(CURDIR))
BUILD := build
SOURCES := source
DATA := data
INCLUDES := include
EXEFS_SRC := exefs_src
#ROMFS := romfs
#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH := -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE
CFLAGS := -g -Wall -O2 -ffunction-sections \
$(ARCH) $(DEFINES)
CFLAGS += $(INCLUDE) -D__SWITCH__
CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions
ASFLAGS := -g $(ARCH)
LDFLAGS = -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
LIBS := -lnx
#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS := $(PORTLIBS) $(LIBNX)
#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(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)))
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_BIN := $(addsuffix .o,$(BINFILES))
export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES := $(OFILES_BIN) $(OFILES_SRC)
export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES)))
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)
export BUILD_EXEFS_SRC := $(TOPDIR)/$(EXEFS_SRC)
ifeq ($(strip $(ICON)),)
icons := $(wildcard *.jpg)
ifneq (,$(findstring $(TARGET).jpg,$(icons)))
export APP_ICON := $(TOPDIR)/$(TARGET).jpg
else
ifneq (,$(findstring icon.jpg,$(icons)))
export APP_ICON := $(TOPDIR)/icon.jpg
endif
endif
else
export APP_ICON := $(TOPDIR)/$(ICON)
endif
ifeq ($(strip $(NO_ICON)),)
export NROFLAGS += --icon=$(APP_ICON)
endif
ifeq ($(strip $(NO_NACP)),)
export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
endif
ifneq ($(APP_TITLEID),)
export NACPFLAGS += --titleid=$(APP_TITLEID)
endif
ifneq ($(ROMFS),)
export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
endif
.PHONY: $(BUILD) clean all
#---------------------------------------------------------------------------------
all: $(BUILD)
$(BUILD):
@[ -d $@ ] || mkdir -p $@
@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
#---------------------------------------------------------------------------------
clean:
@echo clean ...
@rm -fr $(BUILD) $(TARGET).pfs0 $(TARGET).nso $(TARGET).nro $(TARGET).nacp $(TARGET).elf
#---------------------------------------------------------------------------------
else
.PHONY: all
DEPENDS := $(OFILES:.o=.d)
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
all : $(OUTPUT).pfs0 $(OUTPUT).nro
$(OUTPUT).pfs0 : $(OUTPUT).nso
$(OUTPUT).nso : $(OUTPUT).elf
ifeq ($(strip $(NO_NACP)),)
$(OUTPUT).nro : $(OUTPUT).elf $(OUTPUT).nacp
else
$(OUTPUT).nro : $(OUTPUT).elf
endif
$(OUTPUT).elf : $(OFILES)
$(OFILES_SRC) : $(HFILES_BIN)
#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o %_bin.h : %.bin
#---------------------------------------------------------------------------------
@echo $(notdir $<)
@$(bin2o)
-include $(DEPENDS)
#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------

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nfc/source/main.c Normal file
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// Include the most common headers from the C standard library
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
// Include the main libnx system header, for Switch development
#include <switch.h>
// See also libnx nfc.h.
// Indefinitely wait for an event to be signaled
// Break when + is pressed, or if the application should quit (in this case, return value will be non-zero)
Result eventWaitLoop(Event *event) {
Result rc = 1;
while (appletMainLoop()) {
rc = eventWait(event, 0);
hidScanInput();
if (R_SUCCEEDED(rc) || (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_PLUS))
break;
consoleUpdate(NULL);
}
return rc;
}
// Print raw data as hexadecimal numbers.
void print_hex(void *buf, size_t size) {
for (size_t i=0; i<size; i++)
printf("%02X", ((u8*)buf)[i]);
printf("\n");
consoleUpdate(NULL);
}
Result process_amiibo(u32 app_id) {
Result rc = 0;
// Get the handle of the first controller with NFC capabilities.
HidControllerID controller = 0;
if (R_SUCCEEDED(rc)) {
u32 device_count;
rc = nfpuListDevices(&device_count, &controller, 1);
if (R_FAILED(rc))
return rc;
}
// Get the activation event. This is signaled when a tag is detected.
Event activate_event = {0};
if (R_FAILED(nfpuAttachActivateEvent(controller, &activate_event)))
goto fail_0;
// Get the deactivation event. This is signaled when a tag is removed.
Event deactivate_event = {0};
if (R_FAILED(nfpuAttachDeactivateEvent(controller, &deactivate_event)))
goto fail_1;
NfpuState state = 0;
if (R_SUCCEEDED(rc)) {
rc = nfpuGetState(&state);
if (R_SUCCEEDED(rc) && state == NfpuState_NonInitialized) {
printf("Bad nfpu state: %u\n", state);
consoleUpdate(NULL);
rc = -1;
}
}
NfpuDeviceState device_state = 0;
if (R_SUCCEEDED(rc)) {
rc = nfpuGetDeviceState(controller, &device_state);
if (R_SUCCEEDED(rc) && device_state > NfpuDeviceState_TagFound) {
printf("Bad nfpu device state: %u\n", device_state);
consoleUpdate(NULL);
rc = -1;
}
}
if (R_FAILED(rc))
goto fail_1;
// Start the detection of tags.
rc = nfpuStartDetection(controller);
if (R_SUCCEEDED(rc)) {
printf("Scanning for a tag...\n");
consoleUpdate(NULL);
}
// Wait until a tag is detected.
// You could also wait until nfpuGetDeviceState returns NfpuDeviceState_TagFound.
if (R_SUCCEEDED(rc)) {
rc = eventWaitLoop(&activate_event);
if (R_SUCCEEDED(rc)) {
printf("A tag was detected, please do not remove it from the NFC spot.\n");
consoleUpdate(NULL);
}
}
// If a tag was successfully detected, load it into memory.
if (R_SUCCEEDED(rc))
rc = nfpuMount(controller, NfpuDeviceType_Amiibo, NfpuMountTarget_All);
// Retrieve the model info data, which contains the amiibo id.
if (R_SUCCEEDED(rc)) {
NfpuModelInfo model_info = {0};
rc = nfpuGetModelInfo(controller, &model_info);
if (R_SUCCEEDED(rc)) {
printf("Amiibo ID: ");
print_hex(model_info.amiibo_id, 8);
}
}
// Retrieve the common info data, which contains the application area size.
u32 app_area_size = 0;
if (R_SUCCEEDED(rc)) {
NfpuCommonInfo common_info = {0};
rc = nfpuGetCommonInfo(controller, &common_info);
if (R_SUCCEEDED(rc))
app_area_size = common_info.application_area_size;
}
u32 npad_id = 0;
if (R_SUCCEEDED(rc)) {
rc = nfpuOpenApplicationArea(controller, app_id, &npad_id);
if (rc == 0x10073) // 2115-0128
printf("This tag contains no application data.\n");
if (rc == 0x13073) // 2115-0152
printf("This tag contains application data associated with an ID other than 0x%x.\n", app_id);
}
u8 app_area[0xd8] = {0}; // Maximum size of the application area.
if (R_SUCCEEDED(rc)) {
rc = nfpuGetApplicationArea(controller, app_area, app_area_size);
if (R_SUCCEEDED(rc)) {
printf("App area:\n");
print_hex(app_area, app_area_size);
}
}
// Wait until the tag is removed.
// You could also wait until nfpuGetDeviceState returns NfpuDeviceState_TagRemoved.
if (R_SUCCEEDED(rc)) {
printf("You can now remove the tag.\n");
consoleUpdate(NULL);
eventWaitLoop(&deactivate_event);
}
// Unmount the tag.
nfpuUnmount(controller);
// Stop the detection of tags.
nfpuStopDetection(controller);
// Cleanup.
fail_1:
eventClose(&deactivate_event);
fail_0:
eventClose(&activate_event);
return rc;
}
// Main program entrypoint
int main(int argc, char* argv[])
{
Result rc = 0;
// Hardcoded for Super Smash Bros. Ultimate.
// See also: https://switchbrew.org/wiki/NFC_services#Application_IDs
u32 app_id = 0x34f80200;
// This example uses a text console, as a simple way to output text to the screen.
// If you want to write a software-rendered graphics application,
// take a look at the graphics/simplegfx example, which uses the libnx Framebuffer API instead.
// If on the other hand you want to write an OpenGL based application,
// take a look at the graphics/opengl set of examples, which uses EGL instead.
consoleInit(NULL);
printf("NFC example program.\n");
printf("Scan an amiibo tag to display information about it.\n\n");
consoleUpdate(NULL);
// Initialize the nfp:user and nfc:user services.
rc = nfpuInitialize(NULL);
// Check if NFC is enabled. If not, wait until it is.
if (R_SUCCEEDED(rc)) {
bool nfc_enabled = false;
rc = nfpuIsNfcEnabled(&nfc_enabled);
if (R_SUCCEEDED(rc) && !nfc_enabled) {
// Get the availability change event. This is signaled when a change in NFC availability happens.
Event availability_change_event = {0};
rc = nfpuAttachAvailabilityChangeEvent(&availability_change_event);
// Wait for a change in availability.
if (R_SUCCEEDED(rc)) {
printf("NFC is disabled. Please turn off plane mode via the quick settings to continue.\n");
consoleUpdate(NULL);
rc = eventWaitLoop(&availability_change_event);
}
eventClose(&availability_change_event);
}
}
if (R_FAILED(rc))
goto fail_main;
printf("Press A to process an amiibo.\n");
printf("Press + at any time to exit.\n");
printf("Waiting for user input...\n\n");
consoleUpdate(NULL);
// Main loop
while (appletMainLoop()) {
// Scan all the inputs. This should be done once for each frame
hidScanInput();
// hidKeysDown returns information about which buttons have been
// just pressed in this frame compared to the previous one
if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_A) {
rc = process_amiibo(app_id);
// If an error happened, print it.
if (R_FAILED(rc))
printf("Error: 0x%x.\n", rc);
printf("Waiting for user input...\n\n");
}
// If + was pressed to exit an eventWaitLoop(), we also catch it here.
if (hidKeysDown(CONTROLLER_P1_AUTO) & KEY_PLUS)
break; // break in order to return to hbmenu
// Update the console, sending a new frame to the display
consoleUpdate(NULL);
}
fail_main:
nfpuExit();
// Deinitialize and clean up resources used by the console (important!)
consoleExit(NULL);
return 0;
}