Rework HoTT into a proper library, which fixes parallel build breakage

makefiles/config_px4fmu-v2_default.mk

@@ -32,6 +32,7 @@ MODULES		+= drivers/ll40ls
 # MODULES		+= drivers/trone
 MODULES		+= drivers/gps
 MODULES		+= drivers/hil
+MODULES		+= drivers/hott
 MODULES		+= drivers/hott/hott_telemetry
 MODULES		+= drivers/hott/hott_sensors
 # MODULES		+= drivers/blinkm

src/drivers/hott/comms.h

@@ -41,6 +41,6 @@
 #ifndef COMMS_H_
 #define COMMS_H
 
-int open_uart(const char *device);
+__EXPORT int open_uart(const char *device);
 
 #endif /* COMMS_H_ */

src/drivers/hott/hott_sensors/module.mk

@@ -37,8 +37,6 @@
 
 MODULE_COMMAND	= hott_sensors
 
-SRCS		= hott_sensors.cpp \
-		  ../messages.cpp \
-		  ../comms.cpp
+SRCS		= hott_sensors.cpp
 
 MAXOPTIMIZATION	 = -Os

src/drivers/hott/hott_telemetry/module.mk

@@ -37,8 +37,6 @@
 
 MODULE_COMMAND	= hott_telemetry
 
-SRCS		= hott_telemetry.cpp \
-		  ../messages.cpp \
-		  ../comms.cpp
+SRCS		= hott_telemetry.cpp
 
 MAXOPTIMIZATION	 = -Os

src/drivers/hott/messages.h

@@ -235,15 +235,15 @@ struct gps_module_msg {
 // The maximum size of a message.
 #define MAX_MESSAGE_BUFFER_SIZE 45
 
-void init_sub_messages(void);
-void init_pub_messages(void);
-void build_gam_request(uint8_t *buffer, size_t *size);
-void publish_gam_message(const uint8_t *buffer);
-void build_eam_response(uint8_t *buffer, size_t *size);
-void build_gam_response(uint8_t *buffer, size_t *size);
-void build_gps_response(uint8_t *buffer, size_t *size);
-float _get_distance_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next);
-void convert_to_degrees_minutes_seconds(double lat, int *deg, int *min, int *sec);
+__EXPORT void init_sub_messages(void);
+__EXPORT void init_pub_messages(void);
+__EXPORT void build_gam_request(uint8_t *buffer, size_t *size);
+__EXPORT void publish_gam_message(const uint8_t *buffer);
+__EXPORT void build_eam_response(uint8_t *buffer, size_t *size);
+__EXPORT void build_gam_response(uint8_t *buffer, size_t *size);
+__EXPORT void build_gps_response(uint8_t *buffer, size_t *size);
+__EXPORT float _get_distance_to_next_waypoint(double lat_now, double lon_now, double lat_next, double lon_next);
+__EXPORT void convert_to_degrees_minutes_seconds(double lat, int *deg, int *min, int *sec);
 
 
 #endif /* MESSAGES_H_ */

src/drivers/hott/module.mk

@@ -0,0 +1,41 @@
+############################################################################
+#
+#   Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name PX4 nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+#
+# Graupner HoTT Sensors messages.
+#
+
+SRCS		= messages.cpp \
+			  comms.cpp
+
+MAXOPTIMIZATION	 = -Os