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https://github.com/switchbrew/switch-examples.git
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Added usbds example.
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yellows8
parent
09b9bbdc0c
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138
usb/usbds/Makefile
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138
usb/usbds/Makefile
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#---------------------------------------------------------------------------------
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.SUFFIXES:
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(DEVKITA64)),)
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$(error "Please set DEVKITA64 in your environment. export DEVKITA64=<path to>DEVKITA64")
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endif
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TOPDIR ?= $(CURDIR)
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include $(DEVKITA64)/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 input directory containing data copied into exefs, normally should only contain "main.npdm".
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#---------------------------------------------------------------------------------
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TARGET := $(notdir $(CURDIR))
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BUILD := build
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SOURCES := source
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DATA := data
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INCLUDES := include
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EXEFS_SRC := exefs_src
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#---------------------------------------------------------------------------------
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# options for code generation
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#---------------------------------------------------------------------------------
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ARCH := -march=armv8-a -fPIE
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CFLAGS := -g -Wall -O2 \
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-ffast-math \
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$(ARCH) $(DEFINES)
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CFLAGS += $(INCLUDE)
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CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
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ASFLAGS := -g $(ARCH)
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LDFLAGS = -specs=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 := $(addsuffix .o,$(BINFILES)) \
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$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
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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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.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).elf
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#---------------------------------------------------------------------------------
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else
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DEPENDS := $(OFILES:.o=.d)
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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$(OUTPUT).pfs0 : $(OUTPUT).nso
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$(OUTPUT).nso : $(OUTPUT).elf
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$(OUTPUT).elf : $(OFILES)
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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
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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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133
usb/usbds/source/main.c
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133
usb/usbds/source/main.c
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#include <string.h>
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#include <stdio.h>
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#include <malloc.h>
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#include <switch.h>
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//Example for usbds, see libnx usb.h. Switch-as-device<>host USB comms.
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//Linux detects this as a serial device.
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//Data transfer over USB works fine with this, however data isn't returned by "/dev/{device}" (depending on what is used for reading it) due to the header(?) from the device->host transfer not being valid.
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Result usbds_test(u8 *tmpbuf)
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{
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Result ret=0;
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s32 tmpindex=0;
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Handle usb_state_event;
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UsbDsInterface* interface = NULL;
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UsbDsEndpoint *endpoint_in = NULL, *endpoint_out = NULL;
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struct usb_interface_descriptor interface_descriptor = {
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.bLength = USB_DT_INTERFACE_SIZE,
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.bDescriptorType = USB_DT_INTERFACE,
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.bInterfaceNumber = USBDS_DEFAULT_InterfaceNumber,
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.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
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.bInterfaceSubClass = USB_CLASS_VENDOR_SPEC,
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.bInterfaceProtocol = USB_CLASS_VENDOR_SPEC,
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};
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struct usb_endpoint_descriptor endpoint_descriptor_in = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_ENDPOINT_IN,
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.bmAttributes = USB_TRANSFER_TYPE_BULK,
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.wMaxPacketSize = 0x40,
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};
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struct usb_endpoint_descriptor endpoint_descriptor_out = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_ENDPOINT_OUT,
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.bmAttributes = USB_TRANSFER_TYPE_BULK,
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.wMaxPacketSize = 0x40,
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};
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usb_state_event = usbDsGetStateChangeEvent();
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//Setup interface.
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ret = usbDsGetDsInterface(&interface, &interface_descriptor, "usb");
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if(R_FAILED(ret))return ret;
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//Setup endpoints.
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ret = usbDsInterface_GetDsEndpoint(interface, &endpoint_in, &endpoint_descriptor_in);//device->host
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if(R_FAILED(ret))return ret;
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ret = usbDsInterface_GetDsEndpoint(interface, &endpoint_out, &endpoint_descriptor_out);//host->device
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if(R_FAILED(ret))return ret;
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ret = usbDsInterface_EnableInterface(interface);
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if(R_FAILED(ret))return ret;
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//Wait for usb comms init to start, which includes waiting for the usb cable to be inserted if it's not already.
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svcWaitSynchronization(&tmpindex, &usb_state_event, 1, U64_MAX);
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svcClearEvent(usb_state_event);
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svcSleepThread(5000000000);//The above will be signalled before the endpoints are ready for use, so just delay 5s (there's currently no known way to properly wait for endpoints-ready).
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memset(tmpbuf, 0, 0x1000);
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tmpbuf[0] = 0x11;
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tmpbuf[1] = 0x1;
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char *strptr = "Hello World!\n";
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strncpy((char*)&tmpbuf[2], strptr, 0x1000-2);
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//Start a device->host transfer.
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ret = usbDsEndpoint_PostBufferAsync(endpoint_in, tmpbuf, 2+strlen(strptr), NULL);
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if(R_FAILED(ret))return ret;
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//Wait for the transfer to finish.
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svcWaitSynchronization(&tmpindex, &endpoint_in->CompletionEvent, 1, U64_MAX);
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svcClearEvent(endpoint_in->CompletionEvent);
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//Start a host->device transfer.
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ret = usbDsEndpoint_PostBufferAsync(endpoint_out, tmpbuf, 0x200, NULL);
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if(R_FAILED(ret))return ret;
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//Wait for the transfer to finish.
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svcWaitSynchronization(&tmpindex, &endpoint_out->CompletionEvent, 1, U64_MAX);
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svcClearEvent(endpoint_out->CompletionEvent);
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memcpy(&tmpbuf[0x400], tmpbuf, 0x200-2);
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tmpbuf[0] = 0x11;
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tmpbuf[1] = 0x1;
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memcpy(&tmpbuf[2], &tmpbuf[0x400], 0x200-2);
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//Start a device->host transfer.
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ret = usbDsEndpoint_PostBufferAsync(endpoint_in, tmpbuf, 0x200, NULL);
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if(R_FAILED(ret))return ret;
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//Wait for the transfer to finish.
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svcWaitSynchronization(&tmpindex, &endpoint_in->CompletionEvent, 1, U64_MAX);
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svcClearEvent(endpoint_in->CompletionEvent);
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return 0;
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}
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int main(int argc, char **argv)
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{
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Result ret;
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usbDsDeviceInfo deviceinfo = {
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.idVendor = 0x0403, // "Future Technology Devices International, Ltd"
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.idProduct = 0x6001, // "FT232 USB-Serial (UART) IC"
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.bcdDevice = 0x0200,
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.Manufacturer = "libnx",
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.Product = "usbds-example",
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.SerialNumber = "1337",
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};
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ret = usbDsInitialize(USBCOMPLEXID_Default, &deviceinfo);
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if (R_SUCCEEDED(ret)) {
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u8 *tmpbuf = memalign(0x1000, 0x1000);//The buffer for PostBufferAsync commands must be 0x1000-byte aligned.
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if(tmpbuf==NULL)ret = -4;
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if (R_SUCCEEDED(ret)) ret = usbds_test(tmpbuf);
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usbDsExit();
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}
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if(R_FAILED(ret))fatalSimple(ret);
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svcSleepThread(5000000000);//Delay 5s
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return 0;
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}
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