# Teensyduino Core Library
# http://www.pjrc.com/teensy/
# Copyright (c) 2019 PJRC.COM, LLC.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# 1. The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# 2. If the Software is incorporated into a build system that allows
# selection among a list of target devices, then similar target
# devices manufactured by PJRC.COM must be included in the list of
# target devices and selectable in the same manner.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

# Use these lines for Teensy 4.0
MCU = IMXRT1062
MCU_LD = imxrt1062.ld
MCU_DEF = ARDUINO_TEENSY40

# Use these lines for Teensy 4.1
#MCU = IMXRT1062
#MCU_LD = imxrt1062_t41.ld
#MCU_DEF = ARDUINO_TEENSY41

# The name of your project (used to name the compiled .hex file)
TARGET = main

# configurable options
OPTIONS = -DF_CPU=600000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -DUSING_MAKEFILE
#
# USB Type configuration:
#   -DUSB_SERIAL
#   -DUSB_DUAL_SERIAL
#   -DUSB_TRIPLE_SERIAL
#   -DUSB_KEYBOARDONLY
#   -DUSB_TOUCHSCREEN
#   -DUSB_HID_TOUCHSCREEN
#   -DUSB_HID
#   -DUSB_SERIAL_HID
#   -DUSB_MIDI
#   -DUSB_MIDI4
#   -DUSB_MIDI16
#   -DUSB_MIDI_SERIAL
#   -DUSB_MIDI4_SERIAL
#   -DUSB_MIDI16_SERIAL
#   -DUSB_AUDIO
#   -DUSB_MIDI_AUDIO_SERIAL
#   -DUSB_MIDI16_AUDIO_SERIAL
#   -DUSB_MTPDISK
#   -DUSB_RAWHID
#   -DUSB_FLIGHTSIM
#   -DUSB_FLIGHTSIM_JOYSTICK

# options needed by many Arduino libraries to configure for Teensy model
OPTIONS += -D__$(MCU)__ -DARDUINO=10813 -DTEENSYDUINO=159 -D$(MCU_DEF)

# for Cortex M7 with single & double precision FPU
CPUOPTIONS = -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -mthumb

# use this for a smaller, no-float printf
#SPECS = --specs=nano.specs

# Other Makefiles and project templates for Teensy
#
# https://forum.pjrc.com/threads/57251?p=213332&viewfull=1#post213332
# https://github.com/apmorton/teensy-template
# https://github.com/xxxajk/Arduino_Makefile_master
# https://github.com/JonHylands/uCee


#************************************************************************
# Location of Teensyduino utilities, Toolchain, and Arduino Libraries.
#
# To get all files needed, install Arduino IDE 1.8.19 and then run the
# Teensyduno installer, available here:
#   https://www.pjrc.com/teensy/td_download.html#installer
#
# Newer Arduino IDE 2.x.x has a completely different folder structure
# which can be made to work, but the defines below assume the folders
# used by Arduino IDE 1.8.19.  You do not need to actually run Arduino.
# Simply installing without running gives you all the files and tools
# in the folder structure compatible with this Makefile.
#
# To use this makefile without Arduino, copy the resources from these
# locations and edit the pathnames.  The rest of Arduino is not needed.
#************************************************************************

# Those that specify a NO_ARDUINO environment variable will
# be able to use this Makefile with no Arduino dependency.
# Please note that if ARDUINOPATH was set, it will override
# the NO_ARDUINO behaviour.
ifndef NO_ARDUINO
# Path to your arduino installation
ARDUINOPATH ?= ../../../../..
endif

ifdef ARDUINOPATH

# path location for Teensy Loader, teensy_post_compile and teensy_reboot (on Linux)
TOOLSPATH = $(abspath $(ARDUINOPATH)/hardware/tools)

# path location for Arduino libraries (currently not used)
LIBRARYPATH = $(abspath $(ARDUINOPATH)/libraries)

# path location for the arm-none-eabi compiler
COMPILERPATH = $(abspath $(ARDUINOPATH)/hardware/tools/arm/bin)

else
# Default to the normal GNU/Linux compiler path if NO_ARDUINO
# and ARDUINOPATH was not set.
COMPILERPATH ?= /usr/bin

endif

#************************************************************************
# Settings below this point usually do not need to be edited
#************************************************************************

# CPPFLAGS = compiler options for C and C++
CPPFLAGS = -Wall -g -O2 $(CPUOPTIONS) -MMD $(OPTIONS) -I. -ffunction-sections -fdata-sections

# compiler options for C++ only
CXXFLAGS = -std=gnu++17 -felide-constructors -fno-exceptions -fpermissive -fno-rtti -Wno-error=narrowing

# compiler options for C only
CFLAGS =

# linker options
LDFLAGS = -Os -Wl,--gc-sections,--relax $(SPECS) $(CPUOPTIONS) -T$(MCU_LD)

# additional libraries to link
LIBS = -larm_cortexM7lfsp_math -lm -lstdc++


# names for the compiler programs
CC = $(COMPILERPATH)/arm-none-eabi-gcc
CXX = $(COMPILERPATH)/arm-none-eabi-g++
OBJCOPY = $(COMPILERPATH)/arm-none-eabi-objcopy
SIZE = $(COMPILERPATH)/arm-none-eabi-size

# automatically create lists of the sources and objects
# TODO: this does not handle Arduino libraries yet...
C_FILES := $(wildcard *.c)
CPP_FILES := $(wildcard *.cpp)
OBJS := $(C_FILES:.c=.o) $(CPP_FILES:.cpp=.o)


# the actual makefile rules (all .o files built by GNU make's default implicit rules)

all: $(TARGET).hex

$(TARGET).elf: $(OBJS) $(MCU_LD)
	$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)

%.hex: %.elf
	$(SIZE) $<
	$(OBJCOPY) -O ihex -R .eeprom $< $@
ifneq (,$(wildcard $(TOOLSPATH)))
	$(TOOLSPATH)/teensy_post_compile -file=$(basename $@) -path=$(shell pwd) -tools=$(TOOLSPATH)
	-$(TOOLSPATH)/teensy_reboot
endif

# compiler generated dependency info
-include $(OBJS:.o=.d)

clean:
	rm -f *.o *.d $(TARGET).elf $(TARGET).hex
