mirror of
https://github.com/afska/gba-link-connection.git
synced 2026-04-25 16:23:41 -05:00
Implementing IR adapter detection
This commit is contained in:
Rodrigo Alfonso
parent
5ad59ea2e1
commit
a83ed0a6e3
289
examples/LinkIR_demo/Makefile
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289
examples/LinkIR_demo/Makefile
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@ -0,0 +1,289 @@
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#
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# Template tonc makefile
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#
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# Yoinked mostly from DKP's template
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#
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# === SETUP ===========================================================
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# --- No implicit rules ---
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.SUFFIXES:
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# --- Paths ---
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export TONCLIB := ${DEVKITPRO}/libtonc
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# === TONC RULES ======================================================
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#
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# Yes, this is almost, but not quite, completely like to
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# DKP's base_rules and gba_rules
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#
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export PATH := $(DEVKITARM)/bin:$(PATH)
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# --- Executable names ---
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PREFIX ?= arm-none-eabi-
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export CC := $(PREFIX)gcc
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export CXX := $(PREFIX)g++
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export AS := $(PREFIX)as
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export AR := $(PREFIX)ar
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export NM := $(PREFIX)nm
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export OBJCOPY := $(PREFIX)objcopy
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# LD defined in Makefile
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# === LINK / TRANSLATE ================================================
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%.gba : %.elf
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@$(OBJCOPY) -O binary $< $@
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@echo built ... $(notdir $@)
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@gbafix $@ -t$(TITLE)
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#----------------------------------------------------------------------
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%.mb.elf :
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@echo Linking multiboot
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$(LD) -specs=gba_mb.specs $(LDFLAGS) $(OFILES) $(LIBPATHS) $(LIBS) -o $@
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$(NM) -Sn $@ > $(basename $(notdir $@)).map
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#----------------------------------------------------------------------
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%.elf :
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@echo Linking cartridge
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$(LD) -specs=gba.specs $(LDFLAGS) $(OFILES) $(LIBPATHS) $(LIBS) -o $@
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$(NM) -Sn $@ > $(basename $(notdir $@)).map
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#----------------------------------------------------------------------
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%.a :
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@echo $(notdir $@)
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@rm -f $@
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$(AR) -crs $@ $^
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# === OBJECTIFY =======================================================
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%.iwram.o : %.iwram.cpp
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@echo $(notdir $<)
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$(CXX) -MMD -MP -MF $(DEPSDIR)/$*.d $(CXXFLAGS) $(IARCH) -c $< -o $@
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#----------------------------------------------------------------------
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%.iwram.o : %.iwram.c
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@echo $(notdir $<)
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$(CC) -MMD -MP -MF $(DEPSDIR)/$*.d $(CFLAGS) $(IARCH) -c $< -o $@
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#----------------------------------------------------------------------
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%.o : %.cpp
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@echo $(notdir $<)
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$(CXX) -MMD -MP -MF $(DEPSDIR)/$*.d $(CXXFLAGS) $(RARCH) -c $< -o $@
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#----------------------------------------------------------------------
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%.o : %.c
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@echo $(notdir $<)
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$(CC) -MMD -MP -MF $(DEPSDIR)/$*.d $(CFLAGS) $(RARCH) -c $< -o $@
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#----------------------------------------------------------------------
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%.o : %.s
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@echo $(notdir $<)
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$(CC) -MMD -MP -MF $(DEPSDIR)/$*.d -x assembler-with-cpp $(ASFLAGS) -c $< -o $@
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#----------------------------------------------------------------------
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%.o : %.S
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@echo $(notdir $<)
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$(CC) -MMD -MP -MF $(DEPSDIR)/$*.d -x assembler-with-cpp $(ASFLAGS) -c $< -o $@
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#----------------------------------------------------------------------
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# canned command sequence for binary data
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#----------------------------------------------------------------------
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define bin2o
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bin2s $< | $(AS) -o $(@)
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echo "extern const u8" `(echo $(<F) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"_end[];" > `(echo $(<F) | tr . _)`.h
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echo "extern const u8" `(echo $(<F) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"[];" >> `(echo $(<F) | tr . _)`.h
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echo "extern const u32" `(echo $(<F) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`_size";" >> `(echo $(<F) | tr . _)`.h
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endef
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# =====================================================================
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# --- Main path ---
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export PATH := $(DEVKITARM)/bin:$(PATH)
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# === PROJECT DETAILS =================================================
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# PROJ : Base project name
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# TITLE : Title for ROM header (12 characters)
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# LIBS : Libraries to use, formatted as list for linker flags
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# BUILD : Directory for build process temporaries. Should NOT be empty!
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# SRCDIRS : List of source file directories
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# DATADIRS : List of data file directories
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# INCDIRS : List of header file directories
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# LIBDIRS : List of library directories
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# General note: use `.' for the current dir, don't leave the lists empty.
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export PROJ ?= $(notdir $(CURDIR))
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TITLE := $(PROJ)
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LIBS := -ltonc -lugba
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BUILD := build
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SRCDIRS := src ../_lib ../../lib
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DATADIRS := data
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INCDIRS := src
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LIBDIRS := $(TONCLIB) $(PWD)/../_lib/libugba
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# --- switches ---
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bMB := 0 # Multiboot build
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bTEMPS := 0 # Save gcc temporaries (.i and .s files)
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bDEBUG2 := 0 # Generate debug info (bDEBUG2? Not a full DEBUG flag. Yet)
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# === BUILD FLAGS =====================================================
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# This is probably where you can stop editing
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# NOTE: I've noticed that -fgcse and -ftree-loop-optimize sometimes muck
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# up things (gcse seems fond of building masks inside a loop instead of
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# outside them for example). Removing them sometimes helps
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# --- Architecture ---
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ARCH := -mthumb-interwork -mthumb
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RARCH := -mthumb-interwork -mthumb
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IARCH := -mthumb-interwork -marm -mlong-calls
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# --- Main flags ---
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CFLAGS := -mcpu=arm7tdmi -mtune=arm7tdmi -Ofast
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CFLAGS += -Wall
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CFLAGS += $(INCLUDE)
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CFLAGS += -ffast-math -fno-strict-aliasing
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USERFLAGS ?=
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CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions -std=c++17 -DLINK_DEVELOPMENT $(USERFLAGS)
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ASFLAGS := $(ARCH) $(INCLUDE)
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LDFLAGS := $(ARCH) -Wl,--print-memory-usage,-Map,$(PROJ).map
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# --- switched additions ----------------------------------------------
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# --- Multiboot ? ---
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ifeq ($(strip $(bMB)), 1)
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TARGET := $(PROJ).mb
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CFLAGS += -DMULTIBOOT_BUILD=1
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CXXFLAGS += -DMULTIBOOT_BUILD=1
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else
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TARGET := $(PROJ)
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CFLAGS += -DMULTIBOOT_BUILD=0
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CXXFLAGS += -DMULTIBOOT_BUILD=0
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endif
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# --- Save temporary files ? ---
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ifeq ($(strip $(bTEMPS)), 1)
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CFLAGS += -save-temps
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CXXFLAGS += -save-temps
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endif
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# --- Debug info ? ---
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ifeq ($(strip $(bDEBUG)), 1)
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CFLAGS += -DDEBUG -g
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CXXFLAGS += -DDEBUG -g
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ASFLAGS += -DDEBUG -g
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LDFLAGS += -g
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else
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CFLAGS += -DNDEBUG
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CXXFLAGS += -DNDEBUG
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ASFLAGS += -DNDEBUG
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endif
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# === BUILD PROC ======================================================
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ifneq ($(BUILD),$(notdir $(CURDIR)))
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# Still in main dir:
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# * Define/export some extra variables
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# * Invoke this file again from the build dir
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# PONDER: what happens if BUILD == "" ?
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export OUTPUT := $(CURDIR)/$(TARGET)
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export VPATH := \
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$(foreach dir, $(SRCDIRS) , $(CURDIR)/$(dir)) \
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$(foreach dir, $(DATADIRS), $(CURDIR)/$(dir))
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export DEPSDIR := $(CURDIR)/$(BUILD)
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# --- List source and data files ---
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CFILES := $(foreach dir, $(SRCDIRS) , $(notdir $(wildcard $(dir)/*.c)))
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CPPFILES := $(foreach dir, $(SRCDIRS) , $(notdir $(wildcard $(dir)/*.cpp)))
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SFILES := $(foreach dir, $(SRCDIRS) , $(notdir $(wildcard $(dir)/*.s)))
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BINFILES := $(foreach dir, $(DATADIRS), $(notdir $(wildcard $(dir)/*.*)))
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# --- Set linker depending on C++ file existence ---
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ifeq ($(strip $(CPPFILES)),)
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export LD := $(CC)
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else
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export LD := $(CXX)
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endif
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# --- Define object file list ---
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export OFILES := $(addsuffix .o, $(BINFILES)) \
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$(CFILES:.c=.o) $(CPPFILES:.cpp=.o) \
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$(SFILES:.s=.o)
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# --- Create include and library search paths ---
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export INCLUDE := $(foreach dir,$(INCDIRS),-I$(CURDIR)/$(dir)) \
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$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
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-I$(CURDIR)/$(BUILD)
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export LIBPATHS := -L$(CURDIR) $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
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# --- Create BUILD if necessary, and run this makefile from there ---
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$(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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arm-none-eabi-nm -Sn $(OUTPUT).elf > $(BUILD)/$(TARGET).map
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all : $(BUILD)
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clean:
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@echo clean ...
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@rm -rf $(BUILD) $(TARGET).elf $(TARGET).gba $(TARGET).sav
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else # If we're here, we should be in the BUILD dir
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DEPENDS := $(OFILES:.o=.d)
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# --- Main targets ----
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$(OUTPUT).gba : $(OUTPUT).elf
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$(OUTPUT).elf : $(OFILES)
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-include $(DEPENDS)
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endif # End BUILD switch
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# --- More targets ----------------------------------------------------
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.PHONY: clean rebuild start
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rebuild: clean $(BUILD)
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start:
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start "$(TARGET).gba"
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restart: rebuild start
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# EOF
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38
examples/LinkIR_demo/src/main.cpp
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38
examples/LinkIR_demo/src/main.cpp
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// (0) Include the header
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#include "../../../lib/LinkIR.hpp"
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#include "../../_lib/common.h"
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#include "../../_lib/interrupt.h"
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// (1) Create a LinkIR instance
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LinkIR* linkIR = new LinkIR();
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void init() {
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Common::initTTE();
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// (2) Add the required interrupt service routines
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interrupt_init();
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interrupt_add(INTR_VBLANK, []() {});
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interrupt_add(INTR_SERIAL, LINK_IR_ISR_SERIAL);
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interrupt_add(INTR_TIMER3, []() {});
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// (3) Initialize the library
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// linkIR->activate();
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}
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int main() {
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init();
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bool isConnected = linkIR->activate();
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if (isConnected) {
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Common::log("Adapter connected!");
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} else {
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Common::log("NOT connected");
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}
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while (true) {
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VBlankIntrWait();
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}
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return 0;
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}
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159
lib/LinkIR.hpp
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159
lib/LinkIR.hpp
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#ifndef LINK_IR_H
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#define LINK_IR_H
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// --------------------------------------------------------------------------
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// A driver for the Infrared Adapter (AGB-006).
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// --------------------------------------------------------------------------
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// Usage:
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// - 1) Include this header in your main.cpp file and add:
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// LinkIR* linkIR = new LinkIR();
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// - 2) Add the interrupt service routines:
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// interrupt_init();
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// interrupt_add(INTR_SERIAL, LINK_IR_ISR_SERIAL);
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// interrupt_add(INTR_TIMER3, []() {});
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// - 3) Initialize the library with:
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// linkIR->activate();
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// - 4) Send IR signals:
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// linkIR->send({21, 2, 40, 4, 32, 0});
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// // u16 array
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// // even indices: marks (IR on)
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// // odd indices: spaces (IR off)
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// // numbers represent microseconds
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// // 0 = EOS
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// - 5) Receive IR signals;
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// u16 pulses[2000];
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// linkIR->receive(pulses, 2000, 30000);
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// // out array, max entries, timeout (in microseconds)
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// --------------------------------------------------------------------------
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#ifndef LINK_DEVELOPMENT
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#pragma GCC system_header
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#endif
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#include "LinkGPIO.hpp"
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#include "_link_common.hpp"
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LINK_VERSION_TAG LINK_IR_VERSION = "vLinkIR/v8.0.0";
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#define LINK_IR_SIGNAL_END 0
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#define LINK_IR_DEFAULT_TIMER_ID 3
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/**
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* @brief A driver for the Infrared Adapter (AGB-006).
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*/
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class LinkIR {
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private:
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using u32 = Link::u32;
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using u16 = Link::u16;
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using u8 = Link::u8;
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using Pin = LinkGPIO::Pin;
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using Direction = LinkGPIO::Direction;
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static constexpr int TIMEOUT_MICROSECONDS = 1000;
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static constexpr int TO_TICKS = 17;
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public:
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/**
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* @brief Constructs a new LinkIR object.
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* @param timerId `(0~3)` GBA Timer to use for waiting.
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*/
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explicit LinkIR(u8 timerId = LINK_IR_DEFAULT_TIMER_ID) {
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config.timerId = timerId;
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}
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/**
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* @brief Returns whether the library is active or not.
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*/
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[[nodiscard]] bool isActive() { return isEnabled; }
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/**
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* @brief Activates the library. Returns if the adapter is connected or not.
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*/
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bool activate() {
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LINK_READ_TAG(LINK_IR_VERSION);
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LINK_BARRIER;
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isEnabled = false;
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LINK_BARRIER;
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resetState();
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linkGPIO.reset();
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LINK_BARRIER;
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isEnabled = true;
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LINK_BARRIER;
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linkGPIO.setMode(Pin::SC, Direction::OUTPUT);
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linkGPIO.writePin(Pin::SC, false);
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linkGPIO.setMode(Pin::SO, Direction::OUTPUT);
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linkGPIO.writePin(Pin::SO, false);
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linkGPIO.setSIInterrupts(true);
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linkGPIO.writePin(Pin::SO, true);
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setTimer(TIMEOUT_MICROSECONDS);
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Link::_IntrWait(0,
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Link::_IRQ_SERIAL | Link::_TIMER_IRQ_IDS[config.timerId]);
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bool success = irq;
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irq = false;
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return success;
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}
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/**
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* @brief Deactivates the library.
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*/
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void deactivate() {
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isEnabled = false;
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linkGPIO.reset();
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}
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/**
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* @brief This method is called by the SERIAL interrupt handler.
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* \warning This is internal API!
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*/
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void _onSerial() {
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if (!isEnabled)
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return;
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irq = true;
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}
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struct Config {
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u8 timerId;
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};
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/**
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* @brief LinkIR configuration.
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* \warning `deactivate()` first, change the config, and `activate()` again!
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*/
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Config config;
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private:
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LinkGPIO linkGPIO;
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volatile bool isEnabled = false;
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volatile bool irq = false;
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void resetState() { irq = false; }
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void setTimer(u32 microseconds) {
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u32 cycles = microseconds * TO_TICKS;
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Link::_REG_TM[config.timerId].start = -cycles;
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Link::_REG_TM[config.timerId].cnt =
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Link::_TM_ENABLE | Link::_TM_IRQ | Link::_TM_FREQ_1;
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}
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};
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extern LinkIR* linkIR;
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/**
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* @brief SERIAL interrupt handler.
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*/
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inline void LINK_IR_ISR_SERIAL() {
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linkIR->_onSerial();
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}
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// TODO: IMPLEMENT
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// TODO: C BINDINGS
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#endif // LINK_IR_H
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