Initial commit with blink example.
This commit is contained in:
Tony DiCola
parent
ec0af90fb6
commit
7a262a6be0
7 changed files with 535 additions and 0 deletions
4
.gitignore
vendored
4
.gitignore
vendored
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@ -1,3 +1,6 @@
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*.d
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*.map
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# Object files
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*.o
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*.ko
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@ -27,6 +30,7 @@
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*.i*86
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*.x86_64
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*.hex
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*.bin
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# Debug files
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*.dSYM/
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93
Makefile
Normal file
93
Makefile
Normal file
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@ -0,0 +1,93 @@
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## Dash Example Makefile
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## Author: Tony DiCola
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##
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## This file is based on the libopencm3-examples project which is released with
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## the following license:
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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 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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# 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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# Do not print "Entering directory ...".
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MAKEFLAGS += --no-print-directory
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endif
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OPENCM3_DIR := $(realpath libopencm3)
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EXAMPLE_RULES = elf
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all: build
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bin: EXAMPLE_RULES += bin
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hex: EXAMPLE_RULES += hex
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srec: EXAMPLE_RULES += srec
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list: EXAMPLE_RULES += list
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images: EXAMPLE_RULES += images
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bin: build
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hex: build
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srec: build
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list: build
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images: build
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build: lib examples
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lib:
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$(Q)if [ ! "`ls -A libopencm3`" ] ; then \
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printf "######## ERROR ########\n"; \
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printf "\tlibopencm3 is not initialized.\n"; \
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printf "\tPlease run:\n"; \
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printf "\t$$ git submodule init\n"; \
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printf "\t$$ git submodule update\n"; \
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printf "\tbefore running make.\n"; \
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printf "######## ERROR ########\n"; \
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exit 1; \
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fi
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$(Q)$(MAKE) -C libopencm3
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EXAMPLE_DIRS:=$(sort $(dir $(wildcard ./examples/*/Makefile)))
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$(EXAMPLE_DIRS): lib
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@printf " BUILD $@\n";
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$(Q)$(MAKE) --directory=$@ OPENCM3_DIR=$(OPENCM3_DIR) $(EXAMPLE_RULES)
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examples: $(EXAMPLE_DIRS)
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$(Q)true
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clean: $(EXAMPLE_DIRS:=.clean) styleclean
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$(Q)$(MAKE) -C libopencm3 clean
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stylecheck: $(EXAMPLE_DIRS:=.stylecheck)
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styleclean: $(EXAMPLE_DIRS:=.styleclean)
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%.clean:
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$(Q)if [ -d $* ]; then \
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printf " CLEAN $*\n"; \
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$(MAKE) -C $* clean OPENCM3_DIR=$(OPENCM3_DIR) || exit $?; \
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fi;
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%.styleclean:
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$(Q)$(MAKE) -C $* styleclean OPENCM3_DIR=$(OPENCM3_DIR)
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%.stylecheck:
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$(Q)$(MAKE) -C $* stylecheck OPENCM3_DIR=$(OPENCM3_DIR)
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.PHONY: build lib examples $(EXAMPLE_DIRS) install clean stylecheck styleclean \
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bin hex srec list images
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35
dash.ld
Normal file
35
dash.ld
Normal file
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@ -0,0 +1,35 @@
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/*
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* Dash Linker Configuration
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* Author: Tony DiCola
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*
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* This file is based on the libopencm3-examples project which is released with
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* the following license:
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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 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
|
||||
* 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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* Define memory regions for Dash's STM32F205GR6 CPU, with 1 megabyte of flash
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* and 128 kilobytes of memory.
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*/
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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_stm32f2.ld
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54
examples/Makefile.include
Normal file
54
examples/Makefile.include
Normal file
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@ -0,0 +1,54 @@
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##
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## Dash Example Makefile Includes
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## Author: Tony DiCola
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##
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## This file is based on the libopencm3-examples project which is released with
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## the following license:
|
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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 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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## 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
|
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## GNU Lesser General Public License for more details.
|
||||
##
|
||||
## 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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LIBNAME = opencm3_stm32f2
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DEFS = -DSTM32F2
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FP_FLAGS ?= -msoft-float
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ARCH_FLAGS = -mthumb -mcpu=cortex-m3 $(FP_FLAGS) -mfix-cortex-m3-ldrd
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LDSCRIPT = ../../dash.ld
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OPENCM3_DIR := ../../libopencm3
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################################################################################
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# OpenOCD specific variables
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OOCD ?= openocd
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OOCD_INTEFACE ?= stlink-v2
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OOCD_BOARD ?=
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################################################################################
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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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################################################################################
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# texane/stlink specific variables
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#STLINK_PORT ?= :4242
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include ../Makefile.rules
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250
examples/Makefile.rules
Normal file
250
examples/Makefile.rules
Normal file
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@ -0,0 +1,250 @@
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##
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## Dash Example Makefile Rules
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## Author: Tony DiCola
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##
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## This file is based on the libopencm3-examples project which is released with
|
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## the following license:
|
||||
##
|
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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) 2013 Frantisek Burian <BuFran@seznam.cz>
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##
|
||||
## 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 <http://www.gnu.org/licenses/>.
|
||||
##
|
||||
|
||||
# Be silent per default, but 'make V=1' will show all compiler calls.
|
||||
ifneq ($(V),1)
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Q := @
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NULL := 2>/dev/null
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endif
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###############################################################################
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# Executables
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PREFIX ?= arm-none-eabi
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CC := $(PREFIX)-gcc
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CXX := $(PREFIX)-g++
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LD := $(PREFIX)-gcc
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AR := $(PREFIX)-ar
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AS := $(PREFIX)-as
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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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STFLASH = $(shell which st-flash)
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STYLECHECK := /checkpatch.pl
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STYLECHECKFLAGS := --no-tree -f --terse --mailback
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STYLECHECKFILES := $(shell find . -name '*.[ch]')
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###############################################################################
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# Source files
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LDSCRIPT ?= $(BINARY).ld
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OBJS += $(BINARY).o
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ifeq ($(strip $(OPENCM3_DIR)),)
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# user has not specified the library path, so we try to detect it
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# where we search for the library
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LIBPATHS := ./libopencm3 ../../../../libopencm3 ../../../../../libopencm3
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OPENCM3_DIR := $(wildcard $(LIBPATHS:=/locm3.sublime-project))
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OPENCM3_DIR := $(firstword $(dir $(OPENCM3_DIR)))
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ifeq ($(strip $(OPENCM3_DIR)),)
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$(warning Cannot find libopencm3 library in the standard search paths.)
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$(error Please specify it through OPENCM3_DIR variable!)
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endif
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endif
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|
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ifeq ($(V),1)
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$(info Using $(OPENCM3_DIR) path to library)
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endif
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INCLUDE_DIR = $(OPENCM3_DIR)/include
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LIB_DIR = $(OPENCM3_DIR)/lib
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SCRIPT_DIR = $(OPENCM3_DIR)/scripts
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###############################################################################
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# C flags
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CFLAGS += -std=c99
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CFLAGS += -Os -g
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CFLAGS += -Wextra -Wshadow -Wimplicit-function-declaration
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CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
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CFLAGS += -fno-common -ffunction-sections -fdata-sections
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|
||||
###############################################################################
|
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# C++ flags
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CXXFLAGS += -Os -g
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CXXFLAGS += -Wextra -Wshadow -Wredundant-decls -Weffc++
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CXXFLAGS += -fno-common -ffunction-sections -fdata-sections
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||||
|
||||
###############################################################################
|
||||
# C & C++ preprocessor common flags
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||||
|
||||
CPPFLAGS += -MD
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CPPFLAGS += -Wall -Wundef
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CPPFLAGS += -I$(INCLUDE_DIR) $(DEFS)
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||||
|
||||
###############################################################################
|
||||
# Linker flags
|
||||
|
||||
LDFLAGS += --static -nostartfiles
|
||||
LDFLAGS += -L$(LIB_DIR)
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||||
LDFLAGS += -T$(LDSCRIPT)
|
||||
LDFLAGS += -Wl,-Map=$(*).map
|
||||
LDFLAGS += -Wl,--gc-sections
|
||||
ifeq ($(V),99)
|
||||
LDFLAGS += -Wl,--print-gc-sections
|
||||
endif
|
||||
|
||||
###############################################################################
|
||||
# Used libraries
|
||||
|
||||
LDLIBS += -l$(LIBNAME)
|
||||
LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
|
||||
|
||||
###############################################################################
|
||||
###############################################################################
|
||||
###############################################################################
|
||||
|
||||
.SUFFIXES: .elf .bin .hex .srec .list .map .images
|
||||
.SECONDEXPANSION:
|
||||
.SECONDARY:
|
||||
|
||||
all: elf
|
||||
|
||||
elf: $(BINARY).elf
|
||||
bin: $(BINARY).bin
|
||||
hex: $(BINARY).hex
|
||||
srec: $(BINARY).srec
|
||||
list: $(BINARY).list
|
||||
|
||||
images: $(BINARY).images
|
||||
flash: $(BINARY).flash
|
||||
stlink-flash: $(BINARY).stlink-flash
|
||||
|
||||
$(LDSCRIPT):
|
||||
ifeq (,$(wildcard $(LDSCRIPT)))
|
||||
$(error Unable to find specified linker script: $(LDSCRIPT))
|
||||
endif
|
||||
|
||||
%.images: %.bin %.hex %.srec %.list %.map
|
||||
@#printf "*** $* images generated ***\n"
|
||||
|
||||
%.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 %.map: $(OBJS) $(LDSCRIPT) $(LIB_DIR)/lib$(LIBNAME).a
|
||||
@#printf " LD $(*).elf\n"
|
||||
$(Q)$(LD) $(LDFLAGS) $(ARCH_FLAGS) $(OBJS) $(LDLIBS) -o $(*).elf
|
||||
|
||||
%.o: %.c
|
||||
@#printf " CC $(*).c\n"
|
||||
$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -o $(*).o -c $(*).c
|
||||
|
||||
%.o: %.cxx
|
||||
@#printf " CXX $(*).cxx\n"
|
||||
$(Q)$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -o $(*).o -c $(*).cxx
|
||||
|
||||
%.o: %.cpp
|
||||
@#printf " CXX $(*).cpp\n"
|
||||
$(Q)$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -o $(*).o -c $(*).cpp
|
||||
|
||||
clean:
|
||||
@#printf " CLEAN\n"
|
||||
$(Q)$(RM) *.o *.d *.elf *.bin *.hex *.srec *.list *.map
|
||||
|
||||
stylecheck: $(STYLECHECKFILES:=.stylecheck)
|
||||
styleclean: $(STYLECHECKFILES:=.styleclean)
|
||||
|
||||
# the cat is due to multithreaded nature - we like to have consistent chunks of text on the output
|
||||
%.stylecheck: %
|
||||
$(Q)$(SCRIPT_DIR)$(STYLECHECK) $(STYLECHECKFLAGS) $* > $*.stylecheck; \
|
||||
if [ -s $*.stylecheck ]; then \
|
||||
cat $*.stylecheck; \
|
||||
else \
|
||||
rm -f $*.stylecheck; \
|
||||
fi;
|
||||
|
||||
%.styleclean:
|
||||
$(Q)rm -f $*.stylecheck;
|
||||
|
||||
|
||||
%.stlink-flash: %.bin
|
||||
@printf " FLASH $<\n"
|
||||
$(Q)$(STFLASH) write $(*).bin 0x8000000
|
||||
|
||||
ifeq ($(STLINK_PORT),)
|
||||
ifeq ($(BMP_PORT),)
|
||||
ifeq ($(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 "flash write_image erase $(*).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 "flash write_image erase $(*).hex" \
|
||||
-c "reset" \
|
||||
-c "shutdown" $(NULL)
|
||||
endif
|
||||
else
|
||||
%.flash: %.elf
|
||||
@printf " GDB $(*).elf (flash)\n"
|
||||
$(Q)$(GDB) --batch \
|
||||
-ex 'target extended-remote $(BMP_PORT)' \
|
||||
-x $(SCRIPT_DIR)/black_magic_probe_flash.scr \
|
||||
$(*).elf
|
||||
endif
|
||||
else
|
||||
%.flash: %.elf
|
||||
@printf " GDB $(*).elf (flash)\n"
|
||||
$(Q)$(GDB) --batch \
|
||||
-ex 'target extended-remote $(STLINK_PORT)' \
|
||||
-x $(SCRIPT_DIR)/stlink_flash.scr \
|
||||
$(*).elf
|
||||
endif
|
||||
|
||||
.PHONY: images clean stylecheck styleclean elf bin hex srec list
|
||||
|
||||
-include $(OBJS:.o=.d)
|
||||
7
examples/blink/Makefile
Normal file
7
examples/blink/Makefile
Normal file
|
|
@ -0,0 +1,7 @@
|
|||
# Dash Blink Example Makefile
|
||||
# Copyright (c) 2015 Tony DiCola
|
||||
# Released under a MIT license: http://opensource.org/licenses/MIT
|
||||
|
||||
BINARY = blink
|
||||
|
||||
include ../Makefile.include
|
||||
92
examples/blink/blink.c
Normal file
92
examples/blink/blink.c
Normal file
|
|
@ -0,0 +1,92 @@
|
|||
// Dash Blink Example
|
||||
//
|
||||
// Cycle through blinking the red, green, blue LEDs on the dash every second.
|
||||
// To access the LEDs the following GPIOs are used:
|
||||
// - Red = PB6
|
||||
// - Green = PB7
|
||||
// - Blue = PA8
|
||||
// When the GPIO is pulled down to a low level the LED will turn on.
|
||||
//
|
||||
// Copyright (c) 2015 Tony DiCola
|
||||
// Released under a MIT license: http://opensource.org/licenses/MIT
|
||||
#include <libopencm3/cm3/nvic.h>
|
||||
#include <libopencm3/cm3/systick.h>
|
||||
#include <libopencm3/stm32/gpio.h>
|
||||
#include <libopencm3/stm32/rcc.h>
|
||||
|
||||
|
||||
// Global state:
|
||||
volatile uint32_t systick_millis = 0; // Millisecond counter.
|
||||
|
||||
|
||||
// Delay for the specified number of milliseconds.
|
||||
// This is implemented by configuring the systick timer to increment a count
|
||||
// every millisecond and then busy waiting in a loop.
|
||||
static void delay(uint32_t milliseconds) {
|
||||
uint32_t target = systick_millis + milliseconds;
|
||||
while (target > systick_millis);
|
||||
}
|
||||
|
||||
// Setup the systick timer to increment a count every millisecond. This is
|
||||
// useful for implementing a delay function based on wall clock time.
|
||||
static void systick_setup(void) {
|
||||
// The Dash has a 26mhz external crystal and the CPU will run at that speed
|
||||
// if no other clock changes are applied. To make the systick timer reset
|
||||
// every millisecond (or 1000 times a second) set its reload value to:
|
||||
// CPU_CLOCK_HZ / 1000
|
||||
systick_set_reload(26000);
|
||||
// Set the systick clock source to the main CPU clock and enable it and its
|
||||
// reload interrupt.
|
||||
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
|
||||
systick_counter_enable();
|
||||
systick_interrupt_enable();
|
||||
}
|
||||
|
||||
// Systick timer reload interrupt handler. Called every time the systick timer
|
||||
// reaches its reload value.
|
||||
void sys_tick_handler(void) {
|
||||
// Increment the global millisecond count.
|
||||
systick_millis++;
|
||||
}
|
||||
|
||||
// Setupo and configure the GPIOs to control the LEDs on the Dash.
|
||||
static void gpio_setup(void) {
|
||||
// Enable the GPIO clocks for the two GPIO ports that will be used (A & B).
|
||||
rcc_periph_clock_enable(RCC_GPIOA);
|
||||
rcc_periph_clock_enable(RCC_GPIOB);
|
||||
|
||||
// Set each LED GPIO as an output.
|
||||
gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO8); // PA8, blue LED
|
||||
gpio_mode_setup(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO6); // PB6, red LED
|
||||
gpio_mode_setup(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO7); // PB7, green LED
|
||||
}
|
||||
|
||||
|
||||
int main(void) {
|
||||
// Setup systick timer and GPIOs.
|
||||
systick_setup();
|
||||
gpio_setup();
|
||||
|
||||
// Main loop.
|
||||
while (true) {
|
||||
// Light the red LED. Note that LEDs light up when the GPIO is pulled low
|
||||
// with the gpio_clear function, and turn off when pulled high with the
|
||||
// gpio_set function.
|
||||
gpio_clear(GPIOB, GPIO6); // Red LED on
|
||||
gpio_set(GPIOB, GPIO7); // Green LED off
|
||||
gpio_set(GPIOA, GPIO8); // Blue LED off
|
||||
delay(1000); // Wait 1 second (1000 milliseconds).
|
||||
// Now light just the green LED.
|
||||
gpio_set(GPIOB, GPIO6); // Red LED off
|
||||
gpio_clear(GPIOB, GPIO7); // Green LED on
|
||||
gpio_set(GPIOA, GPIO8); // Blue LED off
|
||||
delay(1000);
|
||||
// Finally light just the blue LED.
|
||||
gpio_set(GPIOB, GPIO6); // Red LED off
|
||||
gpio_set(GPIOB, GPIO7); // Green LED off
|
||||
gpio_clear(GPIOA, GPIO8); // Blue LED on
|
||||
delay(1000);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in a new issue