From 2a8ae89c7a77dcc0c0d5f1a4ec918032051c59f0 Mon Sep 17 00:00:00 2001 From: Fergus Noble Date: Thu, 15 Sep 2011 02:53:16 -0700 Subject: [PATCH] First F2 example working! --- examples/stm32f2/Makefile.include | 129 ++++++++++++++++++ examples/stm32f2/jobygps/miniblink/Makefile | 23 ++++ examples/stm32f2/jobygps/miniblink/README | 6 + .../stm32f2/jobygps/miniblink/miniblink.c | 77 +++++++++++ .../stm32f2/jobygps/miniblink/miniblink.ld | 31 +++++ 5 files changed, 266 insertions(+) create mode 100644 examples/stm32f2/Makefile.include create mode 100644 examples/stm32f2/jobygps/miniblink/Makefile create mode 100644 examples/stm32f2/jobygps/miniblink/README create mode 100644 examples/stm32f2/jobygps/miniblink/miniblink.c create mode 100644 examples/stm32f2/jobygps/miniblink/miniblink.ld diff --git a/examples/stm32f2/Makefile.include b/examples/stm32f2/Makefile.include new file mode 100644 index 00000000..6ec9f65b --- /dev/null +++ b/examples/stm32f2/Makefile.include @@ -0,0 +1,129 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## Copyright (C) 2010 Piotr Esden-Tempski +## Copyright (C) 2011 Fergus Noble +## +## This program is free software: you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This program 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 General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program. If not, see . +## + +PREFIX ?= arm-none-eabi +#PREFIX ?= arm-elf +CC = $(PREFIX)-gcc +LD = $(PREFIX)-gcc +OBJCOPY = $(PREFIX)-objcopy +OBJDUMP = $(PREFIX)-objdump +# Uncomment this line if you want to use the installed (not local) library. +#TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX) +TOOLCHAIN_DIR = ../../../.. +CFLAGS += -Os -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include \ + -fno-common -mcpu=cortex-m3 -mthumb -msoft-float -MD -DSTM32F2 +LDSCRIPT = $(BINARY).ld +LDFLAGS += -lc -lnosys -L$(TOOLCHAIN_DIR)/lib \ + -L$(TOOLCHAIN_DIR)/lib/stm32f2 \ + -T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \ + -mthumb -march=armv7 -mfix-cortex-m3-ldrd -msoft-float +OBJS += $(BINARY).o + +OOCD ?= openocd +OOCD_INTERFACE ?= flossjtag +OOCD_BOARD ?= olimex_stm32_h103 + +# Be silent per default, but 'make V=1' will show all compiler calls. +ifneq ($(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 + +foo.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/stm32f2/libopencm3_stm32f2.a + @#printf " LD $(subst $(shell pwd)/,,$(@))\n" + $(Q)$(LD) -o foo.elf $(OBJS) -lopencm3_stm32f2 $(LDFLAGS) + +%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/stm32f2/libopencm3_stm32f2.a + @#printf " LD $(subst $(shell pwd)/,,$(@))\n" + $(Q)$(LD) -o $(*).elf $(OBJS) -lopencm3_stm32f2 $(LDFLAGS) + +%.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 + $(Q)rm -f *.list + +ifeq ($(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/stm32f2/jobygps/miniblink/Makefile b/examples/stm32f2/jobygps/miniblink/Makefile new file mode 100644 index 00000000..24a478b4 --- /dev/null +++ b/examples/stm32f2/jobygps/miniblink/Makefile @@ -0,0 +1,23 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## +## This program is free software: you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This program 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 General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program. If not, see . +## + +BINARY = miniblink + +include ../../Makefile.include + diff --git a/examples/stm32f2/jobygps/miniblink/README b/examples/stm32f2/jobygps/miniblink/README new file mode 100644 index 00000000..01301125 --- /dev/null +++ b/examples/stm32f2/jobygps/miniblink/README @@ -0,0 +1,6 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +This is the smallest-possible example program using libopencm3. + diff --git a/examples/stm32f2/jobygps/miniblink/miniblink.c b/examples/stm32f2/jobygps/miniblink/miniblink.c new file mode 100644 index 00000000..2927df5e --- /dev/null +++ b/examples/stm32f2/jobygps/miniblink/miniblink.c @@ -0,0 +1,77 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +//#include +#include + +void gpio_setup(void) +{ + /* Enable GPIOC clock. */ + /* Manually: */ + // RCC_APB2ENR |= RCC_APB2ENR_IOPCEN; + /* Using API functions: */ + //rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN); + + /* Set GPIO12 (in GPIO port C) to 'output push-pull'. */ + /* Manually: */ + // GPIOC_CRH = (GPIO_CNF_OUTPUT_PUSHPULL << (((12 - 8) * 4) + 2)); + // GPIOC_CRH |= (GPIO_MODE_OUTPUT_2_MHZ << ((12 - 8) * 4)); + /* Using API functions: */ + MMIO32(RCC_BASE+0x30) |= (1<<2); + gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO3|GPIO4); +} + +int main(void) +{ + int i; + + gpio_setup(); + + /* Blink the LED (PC12) on the board. */ + while (1) { + /* Manually: */ + // GPIOC_BSRR = GPIO12; /* LED off */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + // GPIOC_BRR = GPIO12; /* LED on */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + + /* Using API functions gpio_set()/gpio_clear(): */ + // gpio_set(GPIOC, GPIO12); /* LED off */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + // gpio_clear(GPIOC, GPIO12); /* LED on */ + // for (i = 0; i < 800000; i++) /* Wait a bit. */ + // __asm__("nop"); + + /* Using API function gpio_toggle(): */ + //gpio_toggle(GPIOC, GPIO3); /* LED on/off */ + gpio_set(GPIOC, GPIO3); + gpio_clear(GPIOC, GPIO4); + for (i = 0; i < 800000; i++) /* Wait a bit. */ + __asm__("nop"); + gpio_clear(GPIOC, GPIO3); + gpio_set(GPIOC, GPIO4); + for (i = 0; i < 800000; i++) /* Wait a bit. */ + __asm__("nop"); + } + + return 0; +} diff --git a/examples/stm32f2/jobygps/miniblink/miniblink.ld b/examples/stm32f2/jobygps/miniblink/miniblink.ld new file mode 100644 index 00000000..cfe9ab7b --- /dev/null +++ b/examples/stm32f2/jobygps/miniblink/miniblink.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* Linker script for Olimex STM32-H103 (STM32F103RBT6, 128K flash, 20K RAM). */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 256K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32f2.ld +