Linux之蓝牙协议栈 bluez移植
一、前言
使用情景：将嵌入式Linux系统作为slaver，并定义相关服务与手机进行发送接受及通知等相关操作。
二、编译依赖和BlueZ
1、zlib
LIB_TAR = zlib-1.2.11
LIB_PATH = $(PWD)/../libtar/zlib-1.2.11.tar.gz
all:
cd $(LIB_TAR) && CC=$(LIB_CC) ./configure --prefix=$(OUT_DIR)
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvzf $(LIB_PATH) -C ./
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
2、libffi
LIB_TAR = libffi-3.0.13
LIB_PATH = $(PWD)/../libtar/libffi-3.0.13.tar.gz
all:
cd $(LIB_TAR) && ./configure --prefix=$(OUT_DIR) --host=arm-linux CC=$(LIB_CC)
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvzf $(LIB_PATH) -C ./
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
3、glib
LIB_TAR = glib-2.40.0
LIB_PATH = $(PWD)/../libtar/glib-2.40.0.tar.xz
all:
cd $(LIB_TAR) && ./configure --prefix=$(OUT_DIR) --host=arm-linux CC=$(LIB_CC) PKG_CONFIG_PATH=$(OUT_DIR)/lib/pkgconfig glib_cv_stack_grows=no glib_cv_uscore=yes ac_cv_func_posix_getpwuid_r=yes ac_cv_func_posix_getgrgid_r=yes CPPFLAGS="-I$(OUT_DIR)/include/" LDFLAGS="-L$(OUT_DIR)/lib/"
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvJf $(LIB_PATH) -C ./
cd $(LIB_TAR) && git apply $(PWD)/patch/glib/001-glib-gdate-suppress-string-format-literal-warning.patch
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
PS：编译该库的时候出现异常报错，解决方法如下
diff --git a/code/glib-2.40.0/glib/gdate.c b/code/glib-2.40.0/glib/gdate.c
index 670f7aa..5f03e61 100644
--- a/code/glib-2.40.0/glib/gdate.c
+++ b/code/glib-2.40.0/glib/gdate.c
@@ -2439,6 +2439,9 @@ win32_strftime_helper (const GDate *d,
*
* Returns: number of characters written to the buffer, or 0 the buffer was too small
*/
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+
gsize
g_date_strftime (gchar *s,
gsize slen,
@@ -2549,3 +2552,5 @@ g_date_strftime (gchar *s,
return retval;
#endif
}
+
+#pragma GCC diagnostic pop
4、expat
LIB_TAR = expat-2.1.0
LIB_PATH = $(PWD)/../libtar/expat-2.1.0.tar.gz
all:
cd $(LIB_TAR) && ./configure --prefix=$(OUT_DIR) --host=arm-linux CC=$(LIB_CC)
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvzf $(LIB_PATH) -C ./
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
5、dbus
LIB_TAR = dbus-1.9.4
LIB_PATH = $(PWD)/../libtar/dbus-1.9.4.tar.gz
all:
cd $(LIB_TAR) && ./configure --prefix=$(OUT_DIR) --host=arm-linux --with-x=no --disable-tests --enable-abstract-sockets CC=$(LIB_CC) CPPFLAGS="-I$(OUT_DIR)/include/" LDFLAGS="-L$(OUT_DIR)/lib/"
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvzf $(LIB_PATH) -C ./
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
6、libical
LIB_TAR = libical-1.0
LIB_PATH = $(PWD)/../libtar/libical-1.0.tar.gz
all:
cd $(LIB_TAR) && ./bootstrap
cd $(LIB_TAR) && ./configure --prefix=$(OUT_DIR) --host=arm-linux CC=$(LIB_CC)
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvzf $(LIB_PATH) -C ./
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
7、ncurses
LIB_TAR = ncurses-5.9
LIB_PATH = $(PWD)/../libtar/ncurses-5.9.tar.gz
all:
cd $(LIB_TAR) && ./configure --prefix=$(OUT_DIR) --host=arm-linux CC=$(LIB_CC) --with-shared
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvzf $(LIB_PATH) -C ./
cd .. && git apply $(PWD)/patch/ncurses/001-ncurses-curses-note-error.patch
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
PS：编译该库时发生异常报错，解决方案如下
diff --git a/code/ncurses-5.9/include/curses.tail b/code/ncurses-5.9/include/curses.tail
index 098c898..e81cc5a 100644
--- a/code/ncurses-5.9/include/curses.tail
+++ b/code/ncurses-5.9/include/curses.tail
@@ -101,7 +101,7 @@ extern NCURSES_EXPORT(mmask_t) mousemask (mmask_t, mmask_t *);
extern NCURSES_EXPORT(bool) wenclose (const WINDOW *, int, int);
extern NCURSES_EXPORT(int) mouseinterval (int);
extern NCURSES_EXPORT(bool) wmouse_trafo (const WINDOW*, int*, int*, bool);
-extern NCURSES_EXPORT(bool) mouse_trafo (int*, int*, bool); /* generated */
+extern NCURSES_EXPORT(bool) mouse_trafo (int*, int*, bool);
#if NCURSES_SP_FUNCS
extern NCURSES_EXPORT(bool) NCURSES_SP_NAME(has_mouse) (SCREEN*);
8、readline
LIB_TAR = readline-6.3
LIB_PATH = $(PWD)/../libtar/readline-6.3.tar.gz
all:
cd $(LIB_TAR) && ./configure --prefix=$(OUT_DIR) --host=arm-linux CC=$(LIB_CC) bash_cv_wcwidth_broken=yes
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvzf $(LIB_PATH) -C ./
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
9、bluez
LIB_TAR = bluez-5.44
LIB_PATH = $(PWD)/../libtar/bluez-5.44.tar.xz
all:
cd $(LIB_TAR) && ./configure --prefix=$(OUT_DIR) --host=arm-linux CC=$(LIB_CC) CFLAGS="-I$(OUT_DIR)/include/ -I$(OUT_DIR)/include/glib-2.0 -I$(OUT_DIR)/include/dbus-1.0" LDFLAGS="-lncurses -lreadline -ldbus-1 -lglib-2.0 -lical -L/$(OUT_DIR)/lib -L$(OUT_DIR)/lib" DBUS_CFLAGS="-I$(OUT_DIR)/lib/dbus-1.0/include" DBUS_LIBS="-L$(OUT_DIR)/lib" GLIB_CFLAGS="-I$(OUT_DIR)/lib/glib-2.0/include" GLIB_LIBS="-L$(OUT_DIR)/lib" ICAL_CFLAGS="-I$(OUT_DIR)/include" ICAL_LIBS="-L$(OUT_DIR)/lib" --enable-library --sysconfdir=/etc --localstatedir=/var --enable-experimental --with-systemdsystemunitdir=/lib/systemd/system --with-systemduserunitdir=/usr/lib/system --with-dbusconfdir=$(OUT_DIR)/dbus-1/system.d --enable-testing --enable-experimental --enable-deprecated --disable-systemd --disable-udev --disable-cups --disable-obex
cd $(LIB_TAR) && make && make install
prepare:
rm -rf $(LIB_TAR)
tar -xvJf $(LIB_PATH) -C ./
clean:
cd $(LIB_TAR) && make clean
distclean:
rm -rf $(LIB_TAR)
10、Makefile
export LIB_CC=arm-himix200-linux-gcc
export OUT_DIR=/usr/etc/bluez/
all:
$(MAKE) -f ./zlib.mk
$(MAKE) -f ./libffi.mk
$(MAKE) -f ./glib.mk
$(MAKE) -f ./expat.mk
$(MAKE) -f ./dbus.mk
$(MAKE) -f ./libical.mk
$(MAKE) -f ./ncurses.mk
$(MAKE) -f ./readline.mk
$(MAKE) -f ./bluez.mk
prepare:
$(MAKE) prepare -f ./zlib.mk
$(MAKE) prepare -f ./libffi.mk
$(MAKE) prepare -f ./glib.mk
$(MAKE) prepare -f ./expat.mk
$(MAKE) prepare -f ./dbus.mk
$(MAKE) prepare -f ./libical.mk
$(MAKE) prepare -f ./ncurses.mk
$(MAKE) prepare -f ./readline.mk
$(MAKE) prepare -f ./bluez.mk
clean:
$(MAKE) clean -f ./zlib.mk
$(MAKE) clean -f ./libffi.mk
$(MAKE) clean -f ./glib.mk
$(MAKE) clean -f ./expat.mk
$(MAKE) clean -f ./dbus.mk
$(MAKE) clean -f ./libical.mk
$(MAKE) clean -f ./ncurses.mk
$(MAKE) clean -f ./readline.mk
$(MAKE) clean -f ./bluez.mk
distclean:
$(MAKE) distclean -f ./zlib.mk
$(MAKE) distclean -f ./libffi.mk
$(MAKE) distclean -f ./glib.mk
$(MAKE) distclean -f ./expat.mk
$(MAKE) distclean -f ./dbus.mk
$(MAKE) distclean -f ./libical.mk
$(MAKE) distclean -f ./ncurses.mk
$(MAKE) distclean -f ./readline.mk
$(MAKE) distclean -f ./bluez.mk
PS：在运行bluez的时候，指定的bluez配置文件路径为编译时–prefix参数所指定的路径。为了方便交叉编译后文件的移植，该参数最好为绝对根路径。
三、移植库
编译好后的文件输出目录：
bin/ dbus-1/ etc/ include/ lib/ libexec/ man/ share/ var/
挂载该目录后将下列文件依次拷贝到对应目录下
cp /mnt/bin/* /usr/bin/ -rf
cp /mnt/lib/* /usr/lib/ -rf
cp /mnt/libexec/* /usr/libexec/ -rf
cp /mnt/libexec/bluetooth/bluetoothd /usr/lib/ -rf
cp /mnt/share/* /share/ -rf
上面我说过注意–prefix=$(PATH) 参数所指定的路径，如果不是交叉编译的话，var和etc会考到跟目录下的var和etc下并为本机配置该参数。但由于我们是交叉编译的，该配置文件要集中输出到输出目录$(PATH) 去，然而有个问题是该路径为dbus和bluez运行时寻找的配置路径，因此本应该在根目录下etc和var目录下寻找的配置文件就变成了$(PATH)/etc和$(PATH)/var。（有兴趣的小伙伴可以研究下代码改下这个路径）
因此需要将该目录创建出来，然后将etc和var拷贝到这里。
mkdir -p $(PATH)
cp /mnt/etc $(PATH) -rf
cp /mnt/var $(PATH) -rf
cp /mnt/dbus-1/system.d/dbus-1/system.d/bluetooth.conf $(PATH)/etc/dbus-1/system.d/bluetooth.conf
dbus需要有个messagebus用户，创建一个
adduser messagebus
开启蓝牙模块
hciconfig hci0 up
启动dbus和bluez
dbus-daemon --system --print-pid --print-address
bluetoothd -d -n --compat &
然后就可以用下列命令控制蓝牙了
扫描周围传统/低功耗蓝牙：hcitool scan/lescan
发送广播：hciconfig hci0 leadv
四、效果演示
这里我定义了一个具有读、写、通知功能的服务
开启通知按钮，收到notify字符串。
写个个字符串进去。
读到的就是写进去的字符串。
emmmmmmmmmmmmmm，完美
五、异常问题
1、
Unknown group "lp" in message bus configuration file
Failed to start message bus: The pid file "/usr/etc/bluez/var/run/dbus/pid" exists, if the message bus is not running, remove this file
将/usr/etc/bluez/var/run/dbus/pid删除掉再运行就好了。
2、
src/adapter.c:read_index_list_complete() Number of controllers: 0
当Number of controllers为0时说明蓝牙模块驱动异常。
吐槽下hcitool是真的难用，连bluez的官方都是不推荐使用了。