lm4f: Add exammple for Stellaris Launchpad board
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Alexandru Gagniuc
parent
326c945b55
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c02fba51a4
134
examples/lm4f/Makefile.include
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134
examples/lm4f/Makefile.include
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##
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## This file is part of the libopencm3 project.
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##
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## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
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## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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##
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## This library is free software: you can redistribute it and/or modify
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## it under the terms of the GNU Lesser General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## This library is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU Lesser General Public License for more details.
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##
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## You should have received a copy of the GNU Lesser General Public License
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## along with this library. If not, see <http://www.gnu.org/licenses/>.
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##
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PREFIX ?= arm-none-eabi
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#PREFIX ?= arm-elf
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CC = $(PREFIX)-gcc
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LD = $(PREFIX)-gcc
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OBJCOPY = $(PREFIX)-objcopy
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OBJDUMP = $(PREFIX)-objdump
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TOOLCHAIN_DIR ?= ../../../..
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ifeq ($(wildcard ../../../../lib/libopencm3_lm4f.a),)
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ifneq ($(strip $(shell which $(CC))),)
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TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
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endif
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else
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ifeq ($(V),1)
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$(info We seem to be building the example in the source directory. Using local library!)
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endif
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endif
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CFLAGS += -O0 -g3 -Wall -Wextra -I$(TOOLCHAIN_DIR)/include -fno-common \
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-mcpu=cortex-m3 -mthumb -MD -DLM3S
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LDSCRIPT ?= $(BINARY).ld
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LDFLAGS += -L$(TOOLCHAIN_DIR)/lib \
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-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections
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OBJS += $(BINARY).o
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OOCD ?= openocd
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OOCD_INTERFACE ?= flossjtag
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OOCD_BOARD ?= olimex_stm32_h103
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# FIXME
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# Be silent per default, but 'make V=1' will show all compiler calls.
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ifneq ($(V),1)
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Q := @
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NULL := 2>/dev/null
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else
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LDFLAGS += -Wl,--print-gc-sections
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endif
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.SUFFIXES: .elf .bin .hex .srec .list .images
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.SECONDEXPANSION:
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.SECONDARY:
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all: images
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images: $(BINARY).images
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flash: $(BINARY).flash
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%.images: %.bin %.hex %.srec %.list
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@#echo "*** $* images generated ***"
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%.bin: %.elf
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@#printf " OBJCOPY $(*).bin\n"
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$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
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%.hex: %.elf
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@#printf " OBJCOPY $(*).hex\n"
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$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
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%.srec: %.elf
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@#printf " OBJCOPY $(*).srec\n"
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$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
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%.list: %.elf
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@#printf " OBJDUMP $(*).list\n"
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$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
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%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_lm3s.a
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@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
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$(Q)$(LD) $(LDFLAGS) -o $(*).elf $(OBJS) -lopencm3_lm3s
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%.o: %.c Makefile
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@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
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$(Q)$(CC) $(CFLAGS) -o $@ -c $<
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clean:
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$(Q)rm -f *.o
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$(Q)rm -f *.d
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$(Q)rm -f *.elf
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$(Q)rm -f *.bin
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$(Q)rm -f *.hex
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$(Q)rm -f *.srec
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$(Q)rm -f *.list
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# FIXME: Replace STM32 stuff with proper LPC13XX OpenOCD support later.
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ifeq ($(OOCD_SERIAL),)
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%.flash: %.hex
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@printf " FLASH $<\n"
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@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
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$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
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-f board/$(OOCD_BOARD).cfg \
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-c "init" -c "reset init" \
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-c "stm32x mass_erase 0" \
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-c "flash write_image $(*).hex" \
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-c "reset" \
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-c "shutdown" $(NULL)
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else
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%.flash: %.hex
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@printf " FLASH $<\n"
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@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
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$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
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-f board/$(OOCD_BOARD).cfg \
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-c "ft2232_serial $(OOCD_SERIAL)" \
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-c "init" -c "reset init" \
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-c "stm32x mass_erase 0" \
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-c "flash write_image $(*).hex" \
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-c "reset" \
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-c "shutdown" $(NULL)
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endif
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.PHONY: images clean
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-include $(OBJS:.o=.d)
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31
examples/lm4f/stellaris-ek-lm4f120xl/ek-lm4f120xl.ld
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31
examples/lm4f/stellaris-ek-lm4f120xl/ek-lm4f120xl.ld
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* Linker script for TI Stellaris EX-LM4F120XL evaluation board. */
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/* Define memory regions. */
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MEMORY
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{
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rom (rx) : ORIGIN = 0x00000000, LENGTH = 256K
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ram (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
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}
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/* Include the common ld script. */
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INCLUDE libopencm3_lm4f.ld
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25
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile
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25
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile
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##
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## This file is part of the libopencm3 project.
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##
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## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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##
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## This library is free software: you can redistribute it and/or modify
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## it under the terms of the GNU Lesser General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## This library is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU Lesser General Public License for more details.
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##
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## You should have received a copy of the GNU Lesser General Public License
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## along with this library. If not, see <http://www.gnu.org/licenses/>.
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##
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BINARY = miniblink
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LDSCRIPT = ../ek-lm4f120xl.ld
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include ../../Makefile.include
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9
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/README
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examples/lm4f/stellaris-ek-lm4f120xl/miniblink/README
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------------------------------------------------------------------------------
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README
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------------------------------------------------------------------------------
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Flashes the Red, Green and Blue diodes on the board, in order.
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RED controlled by PF1
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Green controlled by PF3
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Blue controlled by PF2
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93
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c
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examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
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* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* \addtogroup Examples
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*
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* Flashes the Red, Green and Blue diodes on the board, in order.
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*
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* RED controlled by PF1
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* Green controlled by PF3
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* Blue controlled by PF2
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*/
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#include <libopencm3/lm4f/systemcontrol.h>
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#include <libopencm3/lm4f/gpio.h>
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void gpio_setup(void)
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{
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SYSTEMCONTROL_RCGC2 |= 0x20; /* Enable GPIOF in run mode. */
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const u32 outpins = ((1<<3) | (1<<2) | (1<<1));
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GPIO_DIR(GPIOF) |= outpins; /* Configure outputs. */
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GPIO_DEN(GPIOF) |= outpins; /* Enable digital function on outputs. */
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}
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#define FLASH_DELAY 800000
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int main(void)
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{
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int i;
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gpio_setup();
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/* Blink STATUS LED (PF0) on the board. */
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while (1) {
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/*
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* Flash the Red diode
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*/
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gpio_set(GPIOF, GPIO1);
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for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
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__asm__("nop");
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gpio_clear(GPIOF, GPIO1);
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for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
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__asm__("nop");
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/*
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* Flash the Green diode
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*/
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gpio_set(GPIOF, GPIO3);
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for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
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__asm__("nop");
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gpio_clear(GPIOF, GPIO3);
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for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
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__asm__("nop");
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/*
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* Flash the Blue diode
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*/
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gpio_set(GPIOF, GPIO2);
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for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
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__asm__("nop");
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gpio_clear(GPIOF, GPIO2);
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for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
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__asm__("nop");
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}
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return 0;
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}
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