Initial commitHEADmaster

6 files changed, 415 insertions, 0 deletions

diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c4a0df1
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "libopencm3"]
+	path = libopencm3
+	url = https://github.com/libopencm3/libopencm3.git
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..7623935
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,12 @@
+BINARY = bluetooth
+DEVICE = STM32F407VG
+
+all: $(BINARY).elf libopencm3/lib/libopencm3_stm32f4.a
+
+libopencm3/lib/libopencm3_stm32f4.a:
+	make -C libopencm3
+
+flash: $(BINARY).stlink-flash
+
+include Makefile.include
+
diff --git a/Makefile.include b/Makefile.include
new file mode 100644
index 0000000..5e49e85
--- /dev/null
+++ b/Makefile.include
@@ -0,0 +1,48 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+## Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
+##
+## This library is free software: you can redistribute it and/or modify
+## it under the terms of the GNU Lesser General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU Lesser General Public License for more details.
+##
+## You should have received a copy of the GNU Lesser General Public License
+## along with this library.  If not, see <http://www.gnu.org/licenses/>.
+##
+
+# You should use linker script generation! Specify device!
+ifeq ($(DEVICE),)
+LIBNAME		= opencm3_stm32f4
+DEFS		+= -DSTM32F4
+
+FP_FLAGS	?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
+ARCH_FLAGS	= -mthumb -mcpu=cortex-m4 $(FP_FLAGS)
+endif
+
+################################################################################
+# OpenOCD specific variables
+
+OOCD		?= openocd
+OOCD_INTERFACE	?= stlink-v2
+OOCD_TARGET	?= stm32f4x
+
+################################################################################
+# Black Magic Probe specific variables
+# Set the BMP_PORT to a serial port and then BMP is used for flashing
+BMP_PORT	?=
+
+################################################################################
+# texane/stlink specific variables
+#STLINK_PORT	?= :4242
+
+
+include rules.mk
diff --git a/bluetooth.c b/bluetooth.c
new file mode 100644
index 0000000..9d203f4
--- /dev/null
+++ b/bluetooth.c
@@ -0,0 +1,89 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
+ *
+ * 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/>.
+ */
+
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/usart.h>
+
+static void clock_setup(void)
+{
+	rcc_clock_setup_hse_3v3(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_48MHZ]);
+
+	/* Enable GPIOD clock for LED & USARTs. */
+	rcc_periph_clock_enable(RCC_GPIOD);
+	rcc_periph_clock_enable(RCC_GPIOA);
+
+	/* Enable clocks for USART2. */
+	rcc_periph_clock_enable(RCC_USART2);
+}
+static void usart_setup(void)
+{
+	/* Setup USART2 parameters. */
+	usart_set_baudrate(USART2, 9600);
+	usart_set_databits(USART2, 8);
+	usart_set_stopbits(USART2, USART_STOPBITS_1);
+	usart_set_mode(USART2, USART_MODE_TX_RX);
+	usart_set_parity(USART2, USART_PARITY_NONE);
+	usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
+
+	/* Finally enable the USART. */
+	usart_enable(USART2);
+}
+
+static void gpio_setup(void)
+{
+	/* Setup GPIO pin GPIO12 on GPIO port D for LED. */
+	gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO12);
+
+	/* Setup GPIO pins for USART2 transmit. */
+	gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO2);
+
+	/* Setup GPIO pins for USART2 receive. */
+	gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO3);
+	gpio_set_output_options(GPIOA, GPIO_OTYPE_OD, GPIO_OSPEED_25MHZ, GPIO3);
+
+	/* Setup USART2 TX pin as alternate function. */
+	gpio_set_af(GPIOA, GPIO_AF7, GPIO2); // PA2 -- TX
+	gpio_set_af(GPIOA, GPIO_AF7, GPIO3); // PA3 -- RX
+}
+
+#define RXSIZE 2
+int main(void)
+{
+	clock_setup();
+	gpio_setup();
+	usart_setup();
+
+	char data_tx[] = "AT";
+	char data_rx[1024];
+  unsigned int i = 0;
+
+  for( i = 0; i < sizeof(data_tx)-1; i++ )
+	  usart_send_blocking(USART2, data_tx[i]);
+
+  for( i = 0; i < RXSIZE; i++ )
+	  data_rx[i] = usart_recv_blocking(USART2);
+
+	if( data_rx[0] == 'O' )
+	  gpio_toggle(GPIOD, GPIO12);
+
+	while(1){}
+	return 0;
+}
diff --git a/libopencm3 b/libopencm3
new file mode 160000
+Subproject 599dd43190efd48d5a4086de46d96ec4652a5fb
diff --git a/rules.mk b/rules.mk
new file mode 100644
index 0000000..97e83f6
--- /dev/null
+++ b/rules.mk
@@ -0,0 +1,263 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+## Copyright (C) 2013 Frantisek Burian <BuFran@seznam.cz>
+##
+## 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)
+Q		:= @
+NULL		:= 2>/dev/null
+endif
+
+###############################################################################
+# Executables
+
+PREFIX		?= arm-none-eabi
+
+CC		:= $(PREFIX)-gcc
+CXX		:= $(PREFIX)-g++
+LD		:= $(PREFIX)-gcc
+AR		:= $(PREFIX)-ar
+AS		:= $(PREFIX)-as
+OBJCOPY		:= $(PREFIX)-objcopy
+OBJDUMP		:= $(PREFIX)-objdump
+GDB		:= $(PREFIX)-gdb
+STFLASH		= $(shell which st-flash)
+STYLECHECK	:= /checkpatch.pl
+STYLECHECKFLAGS	:= --no-tree -f --terse --mailback
+STYLECHECKFILES	:= $(shell find . -name '*.[ch]')
+OPT		:= -Os
+CSTD		?= -std=c99
+
+
+###############################################################################
+# Source files
+
+OBJS		+= $(BINARY).o
+
+
+ifeq ($(strip $(OPENCM3_DIR)),)
+# user has not specified the library path, so we try to detect it
+
+# where we search for the library
+LIBPATHS := libopencm3
+
+OPENCM3_DIR := $(wildcard $(LIBPATHS:=/locm3.sublime-project))
+OPENCM3_DIR := $(firstword $(dir $(OPENCM3_DIR)))
+
+ifeq ($(strip $(OPENCM3_DIR)),)
+$(warning Cannot find libopencm3 library in the standard search paths.)
+$(error Please specify it through OPENCM3_DIR variable!)
+endif
+endif
+
+ifeq ($(V),1)
+$(info Using $(OPENCM3_DIR) path to library)
+endif
+
+define ERR_DEVICE_LDSCRIPT_CONFLICT
+You can either specify DEVICE=blah, and have the LDSCRIPT generated,
+or you can provide LDSCRIPT, and ensure CPPFLAGS, LDFLAGS and LDLIBS
+all contain the correct values for the target you wish to use.
+You cannot provide both!
+endef
+
+ifeq ($(strip $(DEVICE)),)
+# Old style, assume LDSCRIPT exists
+DEFS		+= -I$(OPENCM3_DIR)/include
+LDFLAGS		+= -L$(OPENCM3_DIR)/lib
+LDLIBS		+= -l$(LIBNAME)
+LDSCRIPT	?= $(BINARY).ld
+else
+# New style, assume device is provided, and we're generating the rest.
+ifneq ($(strip $(LDSCRIPT)),)
+$(error $(ERR_DEVICE_LDSCRIPT_CONFLICT))
+endif
+include $(OPENCM3_DIR)/mk/genlink-config.mk
+endif
+
+SCRIPT_DIR	= $(OPENCM3_DIR)/scripts
+
+###############################################################################
+# C flags
+
+TGT_CFLAGS	+= $(OPT) $(CSTD) -g
+TGT_CFLAGS	+= $(ARCH_FLAGS)
+TGT_CFLAGS	+= -Wextra -Wshadow -Wimplicit-function-declaration
+TGT_CFLAGS	+= -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
+TGT_CFLAGS	+= -fno-common -ffunction-sections -fdata-sections
+
+###############################################################################
+# C++ flags
+
+TGT_CXXFLAGS	+= $(OPT) $(CXXSTD) -g
+TGT_CXXFLAGS	+= $(ARCH_FLAGS)
+TGT_CXXFLAGS	+= -Wextra -Wshadow -Wredundant-decls  -Weffc++
+TGT_CXXFLAGS	+= -fno-common -ffunction-sections -fdata-sections
+
+###############################################################################
+# C & C++ preprocessor common flags
+
+TGT_CPPFLAGS	+= -MD
+TGT_CPPFLAGS	+= -Wall -Wundef
+TGT_CPPFLAGS	+= $(DEFS)
+
+###############################################################################
+# Linker flags
+
+TGT_LDFLAGS		+= --static -nostartfiles
+TGT_LDFLAGS		+= -T$(LDSCRIPT)
+TGT_LDFLAGS		+= $(ARCH_FLAGS)
+TGT_LDFLAGS		+= -Wl,-Map=$(*).map
+TGT_LDFLAGS		+= -Wl,--gc-sections
+ifeq ($(V),99)
+TGT_LDFLAGS		+= -Wl,--print-gc-sections
+endif
+
+###############################################################################
+# Used libraries
+
+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: $(BINARY).flash
+
+# Either verify the user provided LDSCRIPT exists, or generate it.
+ifeq ($(strip $(DEVICE)),)
+$(LDSCRIPT):
+    ifeq (,$(wildcard $(LDSCRIPT)))
+        $(error Unable to find specified linker script: $(LDSCRIPT))
+    endif
+else
+include $(OPENCM3_DIR)/mk/genlink-rules.mk
+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)
+	@#printf "  LD      $(*).elf\n"
+	$(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $(*).elf
+
+%.o: %.c
+	@#printf "  CC      $(*).c\n"
+	$(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $(*).o -c $(*).c
+
+%.o: %.cxx
+	@#printf "  CXX     $(*).cxx\n"
+	$(Q)$(CXX) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $(*).o -c $(*).cxx
+
+%.o: %.cpp
+	@#printf "  CXX     $(*).cpp\n"
+	$(Q)$(CXX) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $(*).o -c $(*).cpp
+
+clean:
+	@#printf "  CLEAN\n"
+	$(Q)$(RM) *.o *.d *.elf *.bin *.hex *.srec *.list *.map generated.* ${OBJS} ${OBJS:%.o:%.d}
+
+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_FILE),)
+%.flash: %.elf
+	@printf "  FLASH   $<\n"
+	$(Q)(echo "halt; program $(*).elf verify reset" | nc -4 localhost 4444 2>/dev/null) || \
+		$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
+		-f target/$(OOCD_TARGET).cfg \
+		-c "program $(*).elf verify reset exit" \
+		$(NULL)
+else
+%.flash: %.elf
+	@printf "  FLASH   $<\n"
+	$(Q)(echo "halt; program $(*).elf verify reset" | nc -4 localhost 4444 2>/dev/null) || \
+		$(OOCD) -f $(OOCD_FILE) \
+		-c "program $(*).elf verify reset exit" \
+		$(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)