From c02fba51a47a68aea3233608f8d127520a1eefec Mon Sep 17 00:00:00 2001 From: Alexandru Gagniuc Date: Thu, 22 Nov 2012 12:05:33 -0600 Subject: lm4f: Add exammple for Stellaris Launchpad board Signed-off-by: Alexandru Gagniuc --- examples/lm4f/Makefile.include | 134 +++++++++++++++++++++ .../lm4f/stellaris-ek-lm4f120xl/ek-lm4f120xl.ld | 31 +++++ .../lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile | 25 ++++ .../lm4f/stellaris-ek-lm4f120xl/miniblink/README | 9 ++ .../stellaris-ek-lm4f120xl/miniblink/miniblink.c | 93 ++++++++++++++ 5 files changed, 292 insertions(+) create mode 100644 examples/lm4f/Makefile.include create mode 100644 examples/lm4f/stellaris-ek-lm4f120xl/ek-lm4f120xl.ld create mode 100644 examples/lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile create mode 100644 examples/lm4f/stellaris-ek-lm4f120xl/miniblink/README create mode 100644 examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c diff --git a/examples/lm4f/Makefile.include b/examples/lm4f/Makefile.include new file mode 100644 index 0000000..332d24b --- /dev/null +++ b/examples/lm4f/Makefile.include @@ -0,0 +1,134 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## Copyright (C) 2010 Piotr Esden-Tempski +## Copyright (C) 2012 Alexandru Gagniuc +## +## This library is free software: you can redistribute it and/or modify +## it under the terms of the GNU Lesser General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This library is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public License +## along with this library. If not, see . +## + +PREFIX ?= arm-none-eabi +#PREFIX ?= arm-elf +CC = $(PREFIX)-gcc +LD = $(PREFIX)-gcc +OBJCOPY = $(PREFIX)-objcopy +OBJDUMP = $(PREFIX)-objdump + +TOOLCHAIN_DIR ?= ../../../.. +ifeq ($(wildcard ../../../../lib/libopencm3_lm4f.a),) +ifneq ($(strip $(shell which $(CC))),) +TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX) +endif +else +ifeq ($(V),1) +$(info We seem to be building the example in the source directory. Using local library!) +endif +endif + +CFLAGS += -O0 -g3 -Wall -Wextra -I$(TOOLCHAIN_DIR)/include -fno-common \ + -mcpu=cortex-m3 -mthumb -MD -DLM3S +LDSCRIPT ?= $(BINARY).ld +LDFLAGS += -L$(TOOLCHAIN_DIR)/lib \ + -T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections +OBJS += $(BINARY).o + +OOCD ?= openocd +OOCD_INTERFACE ?= flossjtag +OOCD_BOARD ?= olimex_stm32_h103 +# FIXME + +# Be silent per default, but 'make V=1' will show all compiler calls. +ifneq ($(V),1) +Q := @ +NULL := 2>/dev/null +else +LDFLAGS += -Wl,--print-gc-sections +endif + +.SUFFIXES: .elf .bin .hex .srec .list .images +.SECONDEXPANSION: +.SECONDARY: + +all: images + +images: $(BINARY).images +flash: $(BINARY).flash + +%.images: %.bin %.hex %.srec %.list + @#echo "*** $* images generated ***" + +%.bin: %.elf + @#printf " OBJCOPY $(*).bin\n" + $(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin + +%.hex: %.elf + @#printf " OBJCOPY $(*).hex\n" + $(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex + +%.srec: %.elf + @#printf " OBJCOPY $(*).srec\n" + $(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec + +%.list: %.elf + @#printf " OBJDUMP $(*).list\n" + $(Q)$(OBJDUMP) -S $(*).elf > $(*).list + +%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_lm3s.a + @#printf " LD $(subst $(shell pwd)/,,$(@))\n" + $(Q)$(LD) $(LDFLAGS) -o $(*).elf $(OBJS) -lopencm3_lm3s + +%.o: %.c Makefile + @#printf " CC $(subst $(shell pwd)/,,$(@))\n" + $(Q)$(CC) $(CFLAGS) -o $@ -c $< + +clean: + $(Q)rm -f *.o + $(Q)rm -f *.d + $(Q)rm -f *.elf + $(Q)rm -f *.bin + $(Q)rm -f *.hex + $(Q)rm -f *.srec + $(Q)rm -f *.list + +# FIXME: Replace STM32 stuff with proper LPC13XX OpenOCD support later. +ifeq ($(OOCD_SERIAL),) +%.flash: %.hex + @printf " FLASH $<\n" + @# IMPORTANT: Don't use "resume", only "reset" will work correctly! + $(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \ + -f board/$(OOCD_BOARD).cfg \ + -c "init" -c "reset init" \ + -c "stm32x mass_erase 0" \ + -c "flash write_image $(*).hex" \ + -c "reset" \ + -c "shutdown" $(NULL) +else +%.flash: %.hex + @printf " FLASH $<\n" + @# IMPORTANT: Don't use "resume", only "reset" will work correctly! + $(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \ + -f board/$(OOCD_BOARD).cfg \ + -c "ft2232_serial $(OOCD_SERIAL)" \ + -c "init" -c "reset init" \ + -c "stm32x mass_erase 0" \ + -c "flash write_image $(*).hex" \ + -c "reset" \ + -c "shutdown" $(NULL) +endif + +.PHONY: images clean + +-include $(OBJS:.o=.d) + diff --git a/examples/lm4f/stellaris-ek-lm4f120xl/ek-lm4f120xl.ld b/examples/lm4f/stellaris-ek-lm4f120xl/ek-lm4f120xl.ld new file mode 100644 index 0000000..8a096fa --- /dev/null +++ b/examples/lm4f/stellaris-ek-lm4f120xl/ek-lm4f120xl.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2010 Uwe Hermann + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + */ + +/* Linker script for TI Stellaris EX-LM4F120XL evaluation board. */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x00000000, LENGTH = 256K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 32K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_lm4f.ld + diff --git a/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile b/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile new file mode 100644 index 0000000..9a014a7 --- /dev/null +++ b/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile @@ -0,0 +1,25 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2012 Alexandru Gagniuc +## +## This library is free software: you can redistribute it and/or modify +## it under the terms of the GNU Lesser General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This library is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public License +## along with this library. If not, see . +## + +BINARY = miniblink + +LDSCRIPT = ../ek-lm4f120xl.ld + +include ../../Makefile.include + diff --git a/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/README b/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/README new file mode 100644 index 0000000..f6441be --- /dev/null +++ b/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/README @@ -0,0 +1,9 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +Flashes the Red, Green and Blue diodes on the board, in order. +RED controlled by PF1 +Green controlled by PF3 +Blue controlled by PF2 + diff --git a/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c b/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c new file mode 100644 index 0000000..e5ebb5c --- /dev/null +++ b/examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c @@ -0,0 +1,93 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2011 Gareth McMullin + * Copyright (C) 2012 Alexandru Gagniuc + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + */ + +/** + * \addtogroup Examples + * + * Flashes the Red, Green and Blue diodes on the board, in order. + * + * RED controlled by PF1 + * Green controlled by PF3 + * Blue controlled by PF2 + */ + +#include +#include + +void gpio_setup(void) +{ + SYSTEMCONTROL_RCGC2 |= 0x20; /* Enable GPIOF in run mode. */ + const u32 outpins = ((1<<3) | (1<<2) | (1<<1)); + + GPIO_DIR(GPIOF) |= outpins; /* Configure outputs. */ + GPIO_DEN(GPIOF) |= outpins; /* Enable digital function on outputs. */ +} + +#define FLASH_DELAY 800000 +int main(void) +{ + int i; + + gpio_setup(); + + /* Blink STATUS LED (PF0) on the board. */ + while (1) { + /* + * Flash the Red diode + */ + gpio_set(GPIOF, GPIO1); + + for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */ + __asm__("nop"); + + gpio_clear(GPIOF, GPIO1); + + for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */ + __asm__("nop"); + + /* + * Flash the Green diode + */ + gpio_set(GPIOF, GPIO3); + + for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */ + __asm__("nop"); + + gpio_clear(GPIOF, GPIO3); + + for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */ + __asm__("nop"); + + /* + * Flash the Blue diode + */ + gpio_set(GPIOF, GPIO2); + + for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */ + __asm__("nop"); + + gpio_clear(GPIOF, GPIO2); + + for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */ + __asm__("nop"); + } + + return 0; +} -- cgit v1.2.3