Add miniblink example for STM32F4 discovery board
This commit is contained in:
Stephen Caudle
parent
5a89d44591
commit
59df80398b
138
examples/stm32/f4/Makefile.include
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138
examples/stm32/f4/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) 2011 Fergus Noble <fergusnoble@gmail.com>
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##
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## This program is free software: you can redistribute it and/or modify
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## it under the terms of the GNU 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 program 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 General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program. 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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GDB = $(PREFIX)-gdb
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# Uncomment this line if you want to use the installed (not local) library.
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#TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
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TOOLCHAIN_DIR = ../../../../..
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CFLAGS += -Os -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include \
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-fno-common -mcpu=cortex-m3 -mthumb -msoft-float -MD -DSTM32F4
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LDSCRIPT = $(BINARY).ld
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LDFLAGS += -lc -lnosys -L$(TOOLCHAIN_DIR)/lib \
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-L$(TOOLCHAIN_DIR)/lib/stm32/f4 \
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-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \
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-mthumb -march=armv7 -mfix-cortex-m3-ldrd -msoft-float
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OBJS += $(BINARY).o
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OOCD ?= openocd
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OOCD_INTERFACE ?= flossjtag
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OOCD_BOARD ?= olimex_stm32_h103
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# Black magic probe specific variables
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# Set the BMP_PORT to a serial port and then BMP is used for flashing
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BMP_PORT ?=
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# Be silent per default, but 'make V=1' will show all compiler calls.
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ifneq ($(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/stm32/f4/libopencm3_stm32f4.a
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@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
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$(Q)$(LD) -o $(*).elf $(OBJS) -lopencm3_stm32f4 $(LDFLAGS)
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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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ifeq ($(BMP_PORT),)
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ifeq ($(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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else
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%.flash: %.elf
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@echo " GDB $(*).elf (flash)"
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$(Q)$(GDB) --batch \
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-ex 'target extended-remote $(BMP_PORT)' \
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-x $(TOOLCHAIN_DIR)/scripts/black_magic_probe_flash.scr \
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$(*).elf
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endif
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.PHONY: images clean
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-include $(OBJS:.o=.d)
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23
examples/stm32/f4/stm32-discovery/miniblink/Makefile
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23
examples/stm32/f4/stm32-discovery/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) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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##
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## This program is free software: you can redistribute it and/or modify
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## it under the terms of the GNU 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 program 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 General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program. If not, see <http://www.gnu.org/licenses/>.
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##
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BINARY = miniblink
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include ../../Makefile.include
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9
examples/stm32/f4/stm32-discovery/miniblink/README
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9
examples/stm32/f4/stm32-discovery/miniblink/README
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------------------------------------------------------------------------------
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README
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------------------------------------------------------------------------------
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This is the smallest-possible example program using libopencm3.
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It's intended for the ST STM32VLDISCOVERY eval board. It should blink
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the blue LED on the board.
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73
examples/stm32/f4/stm32-discovery/miniblink/miniblink.c
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73
examples/stm32/f4/stm32-discovery/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) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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* Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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 program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/stm32/f4/rcc.h>
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#include <libopencm3/stm32/f4/gpio.h>
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void gpio_setup(void)
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{
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/* Enable GPIOD clock. */
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/* Manually: */
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// RCC_AHB1ENR |= RCC_AHB1ENR_IOPDEN;
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/* Using API functions: */
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
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/* Set GPIO12 (in GPIO port D) to 'output push-pull'. */
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/* Manually: */
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// GPIOD_CRH = (GPIO_CNF_OUTPUT_PUSHPULL << (((8 - 8) * 4) + 2));
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// GPIOD_CRH |= (GPIO_MODE_OUTPUT_2_MHZ << ((8 - 8) * 4));
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/* Using API functions: */
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gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT,
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GPIO_PUPD_NONE,
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GPIO12);
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}
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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 the LED (PC8) on the board. */
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while (1) {
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/* Manually: */
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// GPIOD_BSRR = GPIO12; /* LED off */
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// for (i = 0; i < 1000000; i++) /* Wait a bit. */
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// __asm__("nop");
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// GPIOD_BRR = GPIO12; /* LED on */
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// for (i = 0; i < 1000000; i++) /* Wait a bit. */
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// __asm__("nop");
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/* Using API functions gpio_set()/gpio_clear(): */
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// gpio_set(GPIOD, GPIO12); /* LED off */
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// for (i = 0; i < 1000000; i++) /* Wait a bit. */
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// __asm__("nop");
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// gpio_clear(GPIOD, GPIO12); /* LED on */
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// for (i = 0; i < 1000000; i++) /* Wait a bit. */
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// __asm__("nop");
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/* Using API function gpio_toggle(): */
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gpio_toggle(GPIOD, GPIO12); /* LED on/off */
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for (i = 0; i < 1000000; 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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32
examples/stm32/f4/stm32-discovery/miniblink/miniblink.ld
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examples/stm32/f4/stm32-discovery/miniblink/miniblink.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) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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* Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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 program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* Linker script for ST STM32F4DISCOVERY (STM32F407VG, 1024K flash, 128K RAM). */
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/* Define memory regions. */
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MEMORY
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{
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rom (rx) : ORIGIN = 0x08000000, LENGTH = 1024K
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ram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K
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}
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/* Include the common ld script. */
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INCLUDE libopencm3_stm32f4.ld
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