Merge pull request #543 from tuna-f1sh/sam

Arduino Atmel SAM family Support (ARM architecture)

Thanks @tuna-f1sh !

1 files changed, 481 insertions, 0 deletions

diff --git a/Sam.mk b/Sam.mk
new file mode 100644
index 0000000..8b93ee4
--- /dev/null
+++ b/Sam.mk
@@ -0,0 +1,481 @@
+########################################################################
+#
+# Support for Arduino Atmel SAM boards (sam and samd)
+#
+# You must install a SAM board hardware support package (such as Arduino Zero)
+# to use this, then define ARDUINO_PACKAGE_DIR as the path to the root
+# directory containing the support package.
+#
+# 2018 John Whittington @j_whittington
+#
+########################################################################
+
+arduino_output =
+# When output is not suppressed and we're in the top-level makefile,
+# running for the first time (i.e., not after a restart after
+# regenerating the dependency file), then output the configuration.
+ifndef ARDUINO_QUIET
+    ifeq ($(MAKE_RESTARTS),)
+        ifeq ($(MAKELEVEL),0)
+            arduino_output = $(info $(1))
+        endif
+    endif
+endif
+
+ifndef ARDMK_DIR
+    ARDMK_DIR := $(realpath $(dir $(realpath $(lastword $(MAKEFILE_LIST)))))
+endif
+
+# include Common.mk now we know where it is
+ifndef COMMON_INCLUDED
+    include $(ARDMK_DIR)/Common.mk
+endif
+
+ifndef ARDUINO_PACKAGE_DIR
+    # attempt to find based on Linux, macOS and Windows default
+    ARDUINO_PACKAGE_DIR := $(firstword \
+        $(call dir_if_exists,$(HOME)/.arduino15/packages) \
+        $(call dir_if_exists,$(ARDUINO_DIR)/packages) \
+        $(call dir_if_exists,$(HOME)/Library/Arduino15/packages) \
+        $(call dir_if_exists,$(USERPROFILE)/AppData/Local/Arduino15/packages) )
+    $(call show_config_variable,ARDUINO_PACKAGE_DIR,[AUTODETECTED],(from DEFAULT))
+else
+    $(call show_config_variable,ARDUINO_PACKAGE_DIR,[USER])
+endif
+
+ifndef ARDMK_VENDOR
+    ARDMK_VENDOR := arduino
+endif
+
+ifndef ARCHITECTURE
+    ARCHITECTURE := samd
+endif
+
+ifndef CORE_VER
+    CORE_VER := $(wildcard $(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/hardware/$(ARCHITECTURE)/1.*)
+    ifdef CORE_VER
+        CORE_VER := $(shell basename $(CORE_VER))
+        $(call show_config_variable,CORE_VER,[AUTODETECTED],(from ARDUINO_PACKAGE_DIR))
+    endif
+else
+    $(call show_config_variable,CORE_VER,[USER])
+endif
+
+ifndef CMSIS_VER
+    CMSIS_VER := $(shell basename $(wildcard $(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/tools/CMSIS/4.*))
+    $(call show_config_variable,CMSIS_VER,[AUTODETECTED],(from ARDUINO_PACKAGE_DIR))
+else
+    $(call show_config_variable,CMSIS_VER,[USER])
+endif
+
+ifndef CMSIS_ATMEL_VER
+    CMSIS_ATMEL_VER := $(shell basename $(wildcard $(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/tools/CMSIS-Atmel/1.*))
+    $(call show_config_variable,CMSIS_ATMEL_VER,[AUTODETECTED],(from ARDUINO_PACKAGE_DIR))
+else
+    $(call show_config_variable,CMSIS_ATMEL_VER,[USER])
+endif
+
+ifndef CMSIS_DIR
+    CMSIS_DIR := $(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/tools/CMSIS/$(CMSIS_VER)/CMSIS
+    $(call show_config_variable,CMSIS_DIR,[AUTODETECTED],(from ARDUINO_PACKAGE_DIR))
+else
+    $(call show_config_variable,CMSIS_DIR,[USER])
+endif
+
+ifndef CMSIS_ATMEL_DIR
+    CMSIS_ATMEL_DIR := $(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/tools/CMSIS-Atmel/$(CMSIS_ATMEL_VER)/CMSIS
+    $(call show_config_variable,CMSIS_ATMEL_DIR,[AUTODETECTED],(from ARDUINO_PACKAGE_DIR))
+else
+    $(call show_config_variable,CMSIS_ATMEL_DIR,[USER])
+endif
+
+# Arduino Settings (will get shown in Arduino.mk as computed)
+ifndef ALTERNATE_CORE_PATH
+    ifdef CORE_VER
+        ALTERNATE_CORE_PATH = $(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/hardware/$(ARCHITECTURE)/$(CORE_VER)
+    else
+        ALTERNATE_CORE_PATH = $(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/hardware/$(ARCHITECTURE)
+    endif
+endif
+ifndef ARDUINO_CORE_PATH
+    ARDUINO_CORE_PATH   = $(ALTERNATE_CORE_PATH)/cores/arduino
+endif
+ifndef BOARD_TXT
+    BOARDS_TXT          = $(ALTERNATE_CORE_PATH)/boards.txt
+endif
+
+# Check boards file exists before continuing as parsing non-existant file can create problems
+ifneq ($(findstring boards.txt, $(wildcard $(ALTERNATE_CORE_PATH)/*.txt)), boards.txt)
+    echo $(error $(CORE_VER) Cannot find boards file $(BOARDS_TXT). Check ARDUINO_PACKAGE_DIR path: $(ARDUINO_PACKAGE_DIR) and board support installed)
+endif
+
+# add CMSIS includes
+CPPFLAGS += -I$(CMSIS_DIR)/Include/
+CPPFLAGS += -I$(CMSIS_ATMEL_DIR)/Device/ATMEL
+# path for Cortex library
+LIB_PATH  =  $(CMSIS_DIR)/Lib/GCC
+BOOTLOADER_PARENT = $(ALTERNATE_CORE_PATH)/bootloaders
+
+# Utility from ard-mk to parse boards.txt for flags
+ifndef PARSE_BOARD
+    PARSE_BOARD = $(shell grep -Ev '^\#' $(BOARDS_TXT) | grep -E '^[ \t]*$(1).$(2)=' | cut -d = -f 2 | cut -d : -f 2)
+endif
+
+ifndef VARIANT
+    VARIANT := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).build.variant)
+    ifndef VARIANT
+        VARIANT := $(call PARSE_BOARD,$(BOARD_TAG),build.variant)
+    endif
+endif
+
+# grab any sources in the variant core path (variant.cpp defines pin/port mapping on SAM devices)
+ALT_CORE_C_SRCS := $(wildcard $(ALTERNATE_CORE_PATH)/variants/$(VARIANT)/*.c)
+ALT_CORE_CPP_SRCS := $(wildcard $(ALTERNATE_CORE_PATH)/variants/$(VARIANT)/*.cpp)
+ALT_CORE_S_SRCS := $(wildcard $(ALTERNATE_CORE_PATH)/variants/$(VARIANT)/*.S)
+
+# Use arm-toolchain from Arduino install if exists and user has not defined global version
+ifndef ARM_TOOLS_DIR
+    ARM_TOOLS_DIR = $(call dir_if_exists,$(wildcard $(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/tools/arm-none-eabi-gcc/*))
+    $(call show_config_variable,ARM_TOOLS_DIR,[COMPUTED],(from ARDUINO_PACKAGE_DIR))
+else
+    $(call show_config_variable,ARM_TOOLS_DIR,[USER])
+endif
+
+# define plaform lib dir from Arduino ARM support
+ifndef ARDUINO_PLATFORM_LIB_PATH
+    ARDUINO_PLATFORM_LIB_PATH := $(ALTERNATE_CORE_PATH)/libraries
+    $(call show_config_variable,ARDUINO_PLATFORM_LIB_PATH,[COMPUTED],(from ARDUINO_PACKAGE_DIR))
+endif
+
+########################################################################
+# command names
+
+ifndef CC_NAME
+    CC_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.gcc)
+    ifndef CC_NAME
+        CC_NAME := arm-none-eabi-gcc
+    else
+        $(call show_config_variable,CC_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef CXX_NAME
+    CXX_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.g++)
+    ifndef CXX_NAME
+        CXX_NAME := arm-none-eabi-g++
+    else
+        $(call show_config_variable,CXX_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef AS_NAME
+    AS_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.as)
+    ifndef AS_NAME
+        AS_NAME := arm-none-eabi-gcc-as
+    else
+        $(call show_config_variable,AS_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef OBJCOPY_NAME
+    OBJCOPY_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.objcopy)
+    ifndef OBJCOPY_NAME
+        OBJCOPY_NAME := arm-none-eabi-objcopy
+    else
+        $(call show_config_variable,OBJCOPY_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef OBJDUMP_NAME
+    OBJDUMP_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.objdump)
+    ifndef OBJDUMP_NAME
+        OBJDUMP_NAME := arm-none-eabi-objdump
+    else
+        $(call show_config_variable,OBJDUMP_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef AR_NAME
+    AR_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.ar)
+    ifndef AR_NAME
+        AR_NAME := arm-none-eabi-ar
+    else
+        $(call show_config_variable,AR_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef SIZE_NAME
+    SIZE_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.size)
+    ifndef SIZE_NAME
+        SIZE_NAME := arm-none-eabi-size
+    else
+        $(call show_config_variable,SIZE_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef NM_NAME
+    NM_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.nm)
+    ifndef NM_NAME
+        NM_NAME := arm-none-eabi-gcc-nm
+    else
+        $(call show_config_variable,NM_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef GDB_NAME
+    GDB_NAME := $(call PARSE_BOARD,$(BOARD_TAG),build.command.gdb)
+    ifndef GDB_NAME
+        GDB_NAME := arm-none-eabi-gdb
+    else
+        $(call show_config_variable,GDB_NAME,[COMPUTED])
+    endif
+endif
+
+ifndef UPLOAD_TOOL
+    UPLOAD_TOOL := $(call PARSE_BOARD,$(BOARD_TAG),upload.tool)
+    ifndef UPLOAD_TOOL
+        UPLOAD_TOOL := openocd
+    else
+        $(call show_config_variable,UPLOAD_TOOL,[COMPUTED])
+    endif
+endif
+
+ifndef BOOTLOADER_UPLOAD_TOOL
+    BOOTLOADER_UPLOAD_TOOL := $(call PARSE_BOARD,$(BOARD_TAG),bootloader.tool)
+    ifndef BOOTLOADER_UPLOAD_TOOL
+        BOOTLOADER_UPLOAD_TOOL := openocd
+    else
+        $(call show_config_variable,BOOTLOADER_UPLOAD_TOOL,[COMPUTED])
+    endif
+endif
+
+# processor stuff
+ifndef MCU
+    MCU := $(call PARSE_BOARD,$(BOARD_TAG),build.mcu)
+endif
+
+ifndef MCU_FLAG_NAME
+    MCU_FLAG_NAME=mcpu
+endif
+
+# native port emulates an AVR chip to use AVRDUDE
+ifndef AVRDUDE_MCU
+    AVRDUDE_MCU := $(call PARSE_BOARD,$(BOARD_TAG),build.emu.mcu)
+endif
+
+# GDP settings
+ifndef GDB_PORT
+    # default to localhost default OpenOCD port
+    GDB_PORT = localhost:3333
+endif
+
+ifndef GDB_OPTS
+    # if using BMP do a scan and attach
+    ifeq ($(findstring /dev/tty, $(strip $(GDB_PORT))), /dev/tty)
+        GDB_OPTS = -ex "target extended-remote $(GDB_PORT)" -ex "monitor swdp_scan" -ex "attach 1" -ex "load" -d $(OBJDIR) $(TARGET_ELF)
+    else
+        GDB_OPTS = -ex "target extended-remote $(GDB_PORT)" -ex "load" -d $(OBJDIR) $(TARGET_ELF)
+    endif
+endif
+
+ifndef GDB_UPLOAD_OPTS
+    GDB_UPLOAD_OPTS = $(GDB_OPTS) -ex "set confirm off" -ex "set target-async off" -ex "set remotetimeout 30" -ex "detach" -ex "kill" -ex "quit"
+endif
+
+########################################################################
+# OpenOCD for SAM devices
+
+ifndef OPENOCD
+    BUNDLED_OPENOCD_DIR := $(call dir_if_exists,$(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/tools/openocd)
+    # Try Arduino support package first
+    ifdef BUNDLED_OPENOCD_DIR
+        OPENOCD_VER := $(shell basename $(wildcard $(BUNDLED_OPENOCD_DIR)/*))
+        OPENOCD = $(BUNDLED_OPENOCD_DIR)/$(OPENOCD_VER)/bin/openocd -s $(BUNDLED_OPENOCD_DIR)/$(OPENOCD_VER)/share/openocd/scripts/
+        $(call show_config_variable,OPENOCD,[AUTODETECTED],(from ARDUINO_PACKAGE_DIR))
+    else
+        # Otherwise look on user path
+        OPENOCD := $(shell which openocd 2>/dev/null)
+        ifdef OPENOCD
+            $(call show_config_variable,OPENOCD,[AUTODETECTED],(found in $$PATH))
+        endif
+    endif
+else
+    $(call show_config_variable,OPENOCD,[USER])
+endif
+
+ifndef OPENOCD_OPTS
+    OPENOCD_OPTS += -d2 -f $(ALTERNATE_CORE_PATH)/variants/$(VARIANT)/$(OPENOCD_SCRIPT)
+endif
+
+########################################################################
+# Bossa for SAM devices
+
+ifndef BOSSA
+    BUNDLED_BOSSA_DIR := $(call dir_if_exists,$(ARDUINO_PACKAGE_DIR)/$(ARDMK_VENDOR)/tools/bossac)
+    # Try Arduino support package first
+    ifdef BUNDLED_BOSSA_DIR
+        BOSSA_VER := $(shell basename $(wildcard $(BUNDLED_BOSSA_DIR)/*))
+        BOSSA = $(BUNDLED_BOSSA_DIR)/$(BOSSA_VER)/bossac
+        $(call show_config_variable,BOSSA,[AUTODETECTED],(from ARDUINO_PACKAGE_DIR))
+    else
+        # Otherwise look on user path
+        BOSSA := $(shell which bossac 2>/dev/null)
+        ifdef BOSSA
+            $(call show_config_variable,BOSSA,[AUTODETECTED],(found in $$PATH))
+        endif
+    endif
+else
+    $(call show_config_variable,BOSSA,[USER])
+endif
+
+ifndef BOSSA_OPTS
+    BOSSA_OPTS += -d --info --erase --write --verify --reset
+endif
+
+get_bootloader = $(shell $(RESET_CMD) | tail -1)
+
+# if not bootloader port defined (ISP_PORT), automatically grab first port after reset
+# if not on windows
+ifndef ISP_PORT
+    ifeq ($(CURRENT_OS), WINDOWS)
+        BOSSA_OPTS += --port=$(COM_STYLE_MONITOR_PORT)
+    else
+        BOSSA_OPTS += --port=$(call get_monitor_port)
+    endif
+else
+    BOSSA_OPTS += --port=$(ISP_PORT)
+endif
+
+########################################################################
+# EXECUTABLES
+# Define them here to use ARM_TOOLS_PATH and allow auto finding of AVR_TOOLS_PATH
+OVERRIDE_EXECUTABLES = 1
+
+ARM_TOOLS_PATH := $(ARM_TOOLS_DIR)/bin
+CC      = $(ARM_TOOLS_PATH)/$(CC_NAME)
+CXX     = $(ARM_TOOLS_PATH)/$(CXX_NAME)
+AS      = $(ARM_TOOLS_PATH)/$(AS_NAME)
+OBJCOPY = $(ARM_TOOLS_PATH)/$(OBJCOPY_NAME)
+OBJDUMP = $(ARM_TOOLS_PATH)/$(OBJDUMP_NAME)
+AR      = $(ARM_TOOLS_PATH)/$(AR_NAME)
+SIZE    = $(ARM_TOOLS_PATH)/$(SIZE_NAME)
+NM      = $(ARM_TOOLS_PATH)/$(NM_NAME)
+#GDB     = $(ARM_TOOLS_PATH)/$(GDB_NAME)
+# Use system gdb for now as Arduino supplied has lib error?
+GDB     = $(GDB_NAME)
+
+########################################################################
+# FLAGS
+
+ifndef USB_TYPE
+    USB_TYPE = USBCON
+endif
+
+ifndef USB_PRODUCT
+    USB_PRODUCT := $(call PARSE_BOARD,$(BOARD_TAG),build.usb_product)
+    ifdef USB_PRODUCT
+        $(call show_config_variable,USB_PRODUCT,[COMPUTED])
+    endif
+endif
+
+ifndef USB_MANUFACTURER
+    USB_MANUFACTURER := $(call PARSE_BOARD,$(BOARD_TAG),build.usb_manufacturer)
+    ifndef USB_MANUFACTURER
+        USB_MANUFACTURER = "Unknown"
+    else
+        $(call show_config_variable,USB_MANUFACTURER,[COMPUTED])
+    endif
+endif
+
+ifndef USB_VID
+    USB_VID := $(call PARSE_BOARD,$(BOARD_TAG),build.vid)
+    ifdef USB_VID
+        $(call show_config_variable,USB_VID,[COMPUTED])
+    endif
+endif
+
+ifndef USB_PID
+    USB_PID := $(call PARSE_BOARD,$(BOARD_TAG),build.pid)
+    ifdef USB_PID
+        $(call show_config_variable,USB_PID,[COMPUTED])
+    endif
+endif
+
+# Bootloader settings
+ifndef BOOTLOADER_SIZE
+    BOOTLOADER_SIZE := $(call PARSE_BOARD,$(BOARD_TAG),bootloader.size)
+    ifndef BOOTLOADER_SIZE
+        BOOTLOADER_SIZE := 0x2000
+    else
+        $(call show_config_variable,BOOTLOADER_SIZE,[COMPUTED])
+    endif
+endif
+
+ifndef BOOTLOADER_UNPROTECT
+    BOOTLOADER_UNPROTECT := $(call PARSE_BOARD,$(BOARD_TAG),bootloader.cmd_unprotect)
+    ifndef BOOTLOADER_UNPROTECT
+        BOOTLOADER_UNPROTECT := at91samd bootloader 0
+    else
+        $(call show_config_variable,BOOTLOADER_UNPROTECT,[COMPUTED])
+    endif
+endif
+
+ifndef BOOTLOADER_PROTECT
+    BOOTLOADER_PROTECT := $(call PARSE_BOARD,$(BOARD_TAG),bootloader.cmd_protect)
+    ifndef BOOTLOADER_PROTECT
+        BOOTLOADER_PROTECT := at91samd bootloader 16384
+    else
+        $(call show_config_variable,BOOTLOADER_PROTECT,[COMPUTED])
+    endif
+endif
+
+ifndef BOOTLOADER_PROTECT_VERIFY
+    BOOTLOADER_PROTECT_VERIFY := $(call PARSE_BOARD,$(BOARD_TAG),bootloader.cmd_protect_verify)
+    ifndef BOOTLOADER_PROTECT_VERIFY
+        BOOTLOADER_PROTECT_VERIFY := at91samd bootloader
+    else
+        $(call show_config_variable,BOOTLOADER_PROTECT_VERIFY,[COMPUTED])
+    endif
+endif
+
+# C99 with GNU extensions required for C sources using old compiler
+CC_VERNUM = $(shell $(CC) -dumpversion | sed 's/\.//g')
+ifneq ($(shell expr $(CC_VERNUM) '>' 490), 1)
+    CFLAGS_STD        = -std=gnu99
+endif
+
+CPPFLAGS += -DMD -D$(USB_TYPE) '-DUSB_PRODUCT=$(USB_PRODUCT)' '-DUSB_MANUFACTURER=$(USB_MANUFACTURER)'
+
+# Get extra define flags from boards.txt
+EXFLAGS := $(shell echo $(call PARSE_BOARD,$(BOARD_TAG),build.extra_flags) | grep -oE '(-D)\w+')
+
+# Strip only defines from extra flags as boards file appends user {build.usb}
+CPPFLAGS += $(EXFLAGS)
+CPPFLAGS += -DUSB_VID=$(USB_VID)
+CPPFLAGS += -DUSB_PID=$(USB_PID)
+# Cortex compiler flags
+CPPFLAGS += -mthumb -nostdlib --param max-inline-insns-single=500 -fno-exceptions -Wl,-Map=$(OBJDIR)/$(TARGET).map
+CXXFLAGS += -fno-rtti -fno-threadsafe-statics -std=gnu++11
+
+AMCU := $(call PARSE_BOARD,$(BOARD_TAG),build.mcu)
+BOARD_LINKER_SCRIPT := $(call PARSE_BOARD,$(BOARD_TAG),build.ldscript)
+OPENOCD_SCRIPT := $(call PARSE_BOARD,$(BOARD_TAG),build.openocdscript)
+# TODO Hard defines Cortex M0 math lib - should be dynamic
+LDFLAGS += --specs=nano.specs --specs=nosys.specs -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--start-group -L$(LIB_PATH) -larm_cortexM0l_math -lm
+LINKER_SCRIPTS := -T$(ALTERNATE_CORE_PATH)/variants/$(VARIANT)/$(BOARD_LINKER_SCRIPT)
+OTHER_LIBS := $(call PARSE_BOARD,$(BOARD_TAG),build.flags.libs)
+
+# OpenOCD reset command only for now
+ifeq ($(strip $(UPLOAD_TOOL)), openocd)
+    RESET_CMD = $(OPENOCD) $(OPENOCD_OPTS) -c "telnet_port disabled; init; targets; reset run; shutdown"
+else
+    # Set zero flag for ard-reset for 1200 baud boot to bootloader
+    ARD_RESET_OPTS += --zero
+endif
+
+########################################################################
+# automatially include Arduino.mk for the user
+
+$(call show_separator)
+$(call arduino_output,Arduino.mk Configuration:)
+include $(ARDMK_DIR)/Arduino.mk