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https://github.com/switchbrew/switch-examples.git
synced 2025-06-20 13:02:49 +02:00
Added usbhs example.
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yellows8
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@ -1,3 +1,5 @@
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# usb
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See libnx usb_comms.h. If you want to use usbds directly, see libnx usb_comms.c source and usb.h/usbds.h.
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For using USB devices, see the usbhs example.
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193
usb/usbhs/Makefile
Normal file
193
usb/usbhs/Makefile
Normal file
@ -0,0 +1,193 @@
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#---------------------------------------------------------------------------------
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.SUFFIXES:
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(DEVKITPRO)),)
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$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
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endif
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TOPDIR ?= $(CURDIR)
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include $(DEVKITPRO)/libnx/switch_rules
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#---------------------------------------------------------------------------------
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# TARGET is the name of the output
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# BUILD is the directory where object files & intermediate files will be placed
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# SOURCES is a list of directories containing source code
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# DATA is a list of directories containing data files
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# INCLUDES is a list of directories containing header files
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# EXEFS_SRC is the optional input directory containing data copied into exefs, if anything this normally should only contain "main.npdm".
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# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional)
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#
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# NO_ICON: if set to anything, do not use icon.
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# NO_NACP: if set to anything, no .nacp file is generated.
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# APP_TITLE is the name of the app stored in the .nacp file (Optional)
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# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
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# APP_VERSION is the version of the app stored in the .nacp file (Optional)
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# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
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# ICON is the filename of the icon (.jpg), relative to the project folder.
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# If not set, it attempts to use one of the following (in this order):
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# - <Project name>.jpg
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# - icon.jpg
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# - <libnx folder>/default_icon.jpg
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#---------------------------------------------------------------------------------
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TARGET := $(notdir $(CURDIR))
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BUILD := build
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SOURCES := source
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DATA := data
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INCLUDES := include
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EXEFS_SRC := exefs_src
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#ROMFS := romfs
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#---------------------------------------------------------------------------------
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# options for code generation
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#---------------------------------------------------------------------------------
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ARCH := -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE
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CFLAGS := -g -Wall -O2 -ffunction-sections \
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$(ARCH) $(DEFINES)
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CFLAGS += $(INCLUDE) -D__SWITCH__
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CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions
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ASFLAGS := -g $(ARCH)
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LDFLAGS = -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
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LIBS := -lnx
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#---------------------------------------------------------------------------------
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# list of directories containing libraries, this must be the top level containing
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# include and lib
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#---------------------------------------------------------------------------------
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LIBDIRS := $(PORTLIBS) $(LIBNX)
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#---------------------------------------------------------------------------------
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# no real need to edit anything past this point unless you need to add additional
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# rules for different file extensions
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#---------------------------------------------------------------------------------
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ifneq ($(BUILD),$(notdir $(CURDIR)))
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#---------------------------------------------------------------------------------
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export OUTPUT := $(CURDIR)/$(TARGET)
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export TOPDIR := $(CURDIR)
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export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
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$(foreach dir,$(DATA),$(CURDIR)/$(dir))
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export DEPSDIR := $(CURDIR)/$(BUILD)
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CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
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CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
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SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
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BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
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#---------------------------------------------------------------------------------
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# use CXX for linking C++ projects, CC for standard C
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(CPPFILES)),)
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#---------------------------------------------------------------------------------
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export LD := $(CC)
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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export LD := $(CXX)
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#---------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------
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export OFILES_BIN := $(addsuffix .o,$(BINFILES))
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export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
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export OFILES := $(OFILES_BIN) $(OFILES_SRC)
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export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES)))
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export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
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$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
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-I$(CURDIR)/$(BUILD)
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export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
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export BUILD_EXEFS_SRC := $(TOPDIR)/$(EXEFS_SRC)
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ifeq ($(strip $(ICON)),)
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icons := $(wildcard *.jpg)
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ifneq (,$(findstring $(TARGET).jpg,$(icons)))
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export APP_ICON := $(TOPDIR)/$(TARGET).jpg
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else
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ifneq (,$(findstring icon.jpg,$(icons)))
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export APP_ICON := $(TOPDIR)/icon.jpg
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endif
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endif
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else
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export APP_ICON := $(TOPDIR)/$(ICON)
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endif
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ifeq ($(strip $(NO_ICON)),)
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export NROFLAGS += --icon=$(APP_ICON)
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endif
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ifeq ($(strip $(NO_NACP)),)
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export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
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endif
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ifneq ($(APP_TITLEID),)
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export NACPFLAGS += --titleid=$(APP_TITLEID)
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endif
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ifneq ($(ROMFS),)
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export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
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endif
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.PHONY: $(BUILD) clean all
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#---------------------------------------------------------------------------------
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all: $(BUILD)
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$(BUILD):
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@[ -d $@ ] || mkdir -p $@
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@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
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#---------------------------------------------------------------------------------
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clean:
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@echo clean ...
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@rm -fr $(BUILD) $(TARGET).pfs0 $(TARGET).nso $(TARGET).nro $(TARGET).nacp $(TARGET).elf
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#---------------------------------------------------------------------------------
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else
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.PHONY: all
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DEPENDS := $(OFILES:.o=.d)
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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all : $(OUTPUT).pfs0 $(OUTPUT).nro
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$(OUTPUT).pfs0 : $(OUTPUT).nso
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$(OUTPUT).nso : $(OUTPUT).elf
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ifeq ($(strip $(NO_NACP)),)
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$(OUTPUT).nro : $(OUTPUT).elf $(OUTPUT).nacp
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else
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$(OUTPUT).nro : $(OUTPUT).elf
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endif
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$(OUTPUT).elf : $(OFILES)
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$(OFILES_SRC) : $(HFILES_BIN)
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#---------------------------------------------------------------------------------
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# you need a rule like this for each extension you use as binary data
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#---------------------------------------------------------------------------------
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%.bin.o %_bin.h : %.bin
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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-include $(DEPENDS)
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#---------------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------------
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184
usb/usbhs/source/main.c
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184
usb/usbhs/source/main.c
Normal file
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// Include the most common headers from the C standard library
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <malloc.h>
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// Include the main libnx system header, for Switch development
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#include <switch.h>
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// This example shows how to use USB devices via usbhs, see also libnx usbhs.h/usb.h.
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// Only devices which are not used by sysmodules are usable, hence HID devices are not usable with this for example.
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// Main program entrypoint
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int main(int argc, char* argv[])
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{
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Result rc=0;
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s32 total_entries=0;
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s32 i, epi, tmpi;
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Event inf_event;
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struct usb_endpoint_descriptor *ep_desc = NULL;
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UsbHsClientIfSession inf_session;//This example only uses 1 interface/endpoint, an actual app may use multiple.
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UsbHsClientEpSession ep_session;
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UsbHsInterfaceFilter filter;
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UsbHsInterface interfaces[8];
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// This example uses a text console, as a simple way to output text to the screen.
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// If you want to write a software-rendered graphics application,
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// take a look at the graphics/simplegfx example, which uses the libnx gfx API instead.
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// If on the other hand you want to write an OpenGL based application,
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// take a look at the graphics/opengl set of examples, which uses EGL instead.
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consoleInit(NULL);
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printf("usbhs example\n");
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memset(&inf_event, 0, sizeof(inf_event));
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memset(&filter, 0, sizeof(filter));
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memset(interfaces, 0, sizeof(interfaces));
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memset(&inf_session, 0, sizeof(inf_session));
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memset(&ep_session, 0, sizeof(ep_session));
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//Leave filter at all-zero to disable filtering. If you want to use filtering, see libnx usbhs.h.
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rc = usbHsInitialize();
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if (R_FAILED(rc)) printf("usbHsInitialize() failed: 0x%x\n", rc);
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if (R_SUCCEEDED(rc)) {
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rc = usbHsCreateInterfaceAvailableEvent(&inf_event, true, 0, &filter);
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if (R_FAILED(rc)) printf("usbHsCreateInterfaceAvailableEvent() failed: 0x%x\n", rc);
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}
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if (R_SUCCEEDED(rc)) printf("Ready.\n");
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// Main loop
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while (appletMainLoop())
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{
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// Scan all the inputs. This should be done once for each frame
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hidScanInput();
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// hidKeysDown returns information about which buttons have been
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// just pressed in this frame compared to the previous one
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u64 kDown = hidKeysDown(CONTROLLER_P1_AUTO);
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if (kDown & KEY_PLUS)
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break; // break in order to return to hbmenu
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rc = eventWait(&inf_event, 0);
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if (R_SUCCEEDED(rc)) {
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printf("The available interfaces have changed.\n");
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memset(interfaces, 0, sizeof(interfaces));
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rc = usbHsQueryAvailableInterfaces(&filter, interfaces, sizeof(interfaces), &total_entries);
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if (R_FAILED(rc)) printf("usbHsQueryAvailableInterfaces() failed: 0x%x\n", rc);
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if (R_SUCCEEDED(rc)) {
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printf("total: %d\n", total_entries);
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for(i=0; i<total_entries; i++) {
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printf("%d: pathstr = %s\n", i, interfaces[i].pathstr);//Run any interfaces[i] processing here.
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// You can verify whether this is an interface you want to use by checking the content of interfaces[i], or do so later via control transfers etc.
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rc = usbHsAcquireUsbIf(&inf_session, &interfaces[i]);
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printf("usbHsAcquireUsbIf(interface index = %d) returned: 0x%x\n", i, rc);
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if (R_SUCCEEDED(rc)) {
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u8* tmpbuf = memalign(0x1000, 0x1000);// The allocated buffer address/size must be 0x1000-byte aligned, for usbHsIfCtrlXfer/usbHsEpPostBuffer.
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if (tmpbuf) {
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u32 transferredSize=0;
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// Note that an actual app may want to validate that transferredSize==<input size>.
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// This shows how to use a control transfer, an actual app might not need this.
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// This gets descriptors starting with the config descriptor, via a control transfer.
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memset(tmpbuf, 0, 0x1000);
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rc = usbHsIfCtrlXfer(&inf_session, USB_ENDPOINT_IN, USB_REQUEST_GET_DESCRIPTOR, (USB_DT_CONFIG<<8) | 0, 0, 0x40, tmpbuf, &transferredSize);
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printf("usbHsIfCtrlXfer(interface index = %d) returned: 0x%x, transferredSize=0x%x\n", i, rc, transferredSize);
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if (R_SUCCEEDED(rc)) {
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for(tmpi=0; tmpi<transferredSize; tmpi++)printf("%02X", tmpbuf[tmpi]);
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printf("\n");
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}
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rc = 1;
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// Locate any endpoints you want to use by going through input_endpoint_descs/output_endpoint_descs.
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for(epi=0; epi<15; epi++) {
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ep_desc = &inf_session.inf.inf.input_endpoint_descs[epi];
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if(ep_desc->bLength != 0) {
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printf("Using endpoint %d.\n", epi);
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rc = usbHsIfOpenUsbEp(&inf_session, &ep_session, 1, ep_desc->wMaxPacketSize, ep_desc);
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printf("usbHsIfOpenUsbEp returned: 0x%x\n", rc);
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break;
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}
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}
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// Since this example uses just any device, this may not work for some devices since this doesn't use a proper protocol. Some devices might need unplugged and plugged back in for this to work, after running this example once.
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if (R_SUCCEEDED(rc)) {
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memset(tmpbuf, 0, 0x1000);
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transferredSize = 0;
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rc = usbHsEpPostBuffer(&ep_session, tmpbuf, 0x10, &transferredSize);
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printf("usbHsEpPostBuffer returned: 0x%x, transferredSize=0x%x\n", rc, transferredSize);
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if (R_SUCCEEDED(rc)) {
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for(tmpi=0; tmpi<transferredSize; tmpi++)printf("%02X", tmpbuf[tmpi]);
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printf("\n");
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}
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usbHsEpClose(&ep_session);//At this point this example is done using the endpoint, close it.
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}
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free(tmpbuf);
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}
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else
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printf("tmpbuf alloc failed.\n");
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usbHsIfClose(&inf_session);//At this point this example is done using the interface, close it.
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}
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}
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}
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}
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// Signaled when a device was removed, cleanup state if our interface can't be found in the usbHsQueryAcquiredInterfaces output.
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rc = eventWait(usbHsGetInterfaceStateChangeEvent(), 0);
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if (R_SUCCEEDED(rc)) {
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eventClear(usbHsGetInterfaceStateChangeEvent());
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printf("InterfaceStateChangeEvent was signaled.\n");
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// Only need to check the rest of this if our interface is actually initialized. This won't actually run since this example already closed the interface above.
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if (usbHsIfIsActive(&inf_session)) {
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memset(interfaces, 0, sizeof(interfaces));
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rc = usbHsQueryAcquiredInterfaces(interfaces, sizeof(interfaces), &total_entries);
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if (R_FAILED(rc)) printf("usbHsQueryAcquiredInterfaces() failed: 0x%x\n", rc);
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if (R_SUCCEEDED(rc)) {
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bool found_flag = 0;
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for(i=0; i<total_entries; i++) {
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if (usbHsIfGetID(&inf_session) == interfaces[i].inf.ID) {
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found_flag = 1;
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break;
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}
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}
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if(!found_flag) {
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printf("Interface not found, cleaning up state...\n");
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usbHsEpClose(&ep_session);
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usbHsIfClose(&inf_session);
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}
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}
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}
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}
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// Update the console, sending a new frame to the display
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consoleUpdate(NULL);
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}
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// Make sure to cleanup interface/endpoint state before exiting, if it's not already closed.
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usbHsDestroyInterfaceAvailableEvent(&inf_event, 0);
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usbHsExit();
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// Deinitialize and clean up resources used by the console (important!)
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consoleExit(NULL);
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return 0;
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}
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Reference in New Issue
Block a user