DriverFramework purge

The bulk of this change was tightly coupled and needed to be deleted in one pass. Some of the smaller changes were things that broke as a result of the initial purge and subsequently fixed by further eradicating unnecessary platform differences. Finally, I deleted any dead code I came across in the related files I touched while going through everything.

 - DriverFramework (src/lib/DriverFramework submodule) completely removed
 - added dspal submodule in qurt platform (was brought in via DriverFramework)
 - all df wrapper drivers removed
 - all boards using df wrapper drivers updated to use in tree equivalents
 - unused empty arch/board.h on posix and qurt removed
 - unused IOCTLs removed (pub block, priv, etc)
 - Integrator delete methods only used from df wrapper drivers
 - commander: sensor calibration use "NuttX version" everywhere for now
 - sensors: update to px4_{open, read, close} instead of DevMgr wrapper (adc open for analog differential pressure)
 - battery_status: update to px4_{open, read, close} instead of DevMgr wrapper (adc open for analog differential pressure)
 - cdev cleanup conflicting typedefs and names with actual OS (pollevent_t, etc)
 - load_mon and top remove from linux boards (unused)
 - delete unused PX4_MAIN_FUNCTION
 - delete unused getreg32 macro
 - delete unused SIOCDEVPRIVATE define
 - named each platform tasks consistently
 - posix list_devices and list_topics removed (list_files now shows all virtual files)

platforms/nuttx/src/px4/common/tasks.cpp

@@ -0,0 +1,113 @@
+/****************************************************************************
+ *
+ *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
+ *   Author: @author Lorenz Meier <lm@inf.ethz.ch>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/**
+ * @file tasks.cpp
+ * Implementation of existing task API for NuttX
+ */
+
+#include <px4_platform_common/px4_config.h>
+#include <px4_platform_common/log.h>
+#include <px4_platform_common/tasks.h>
+
+#include <sys/wait.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+#include <sched.h>
+#include <errno.h>
+#include <stdbool.h>
+
+void
+px4_systemreset(bool to_bootloader)
+{
+	board_set_bootload_mode(to_bootloader ? board_reset_enter_bootloader : board_reset_normal);
+	board_system_reset(to_bootloader ? 1 : 0);
+#if defined BOARD_HAS_NO_RESET
+	/* In case there is no HW support Just exit*/
+	PX4_WARN("System Reset Called");
+	exit(1);
+#endif
+}
+
+int px4_task_spawn_cmd(const char *name, int scheduler, int priority, int stack_size, main_t entry, char *const argv[])
+{
+	int pid;
+
+	sched_lock();
+#if !defined(CONFIG_DISABLE_ENVIRON)
+	/* None of the modules access the environment variables (via getenv() for instance), so delete them
+	 * all. They are only used within the startup script, and NuttX automatically exports them to the children
+	 * tasks.
+	 * This frees up a considerable amount of RAM.
+	 */
+	clearenv();
+#endif
+	/* create the task */
+	pid = task_create(name, priority, stack_size, entry, argv);
+
+	if (pid > 0) {
+
+		/* configure the scheduler */
+		struct sched_param param;
+
+		param.sched_priority = priority;
+		sched_setscheduler(pid, scheduler, &param);
+
+		/* XXX do any other private task accounting here before the task starts */
+	}
+
+	sched_unlock();
+
+	return pid;
+}
+
+int px4_task_delete(int pid)
+{
+	return task_delete(pid);
+}
+
+const char *px4_get_taskname(void)
+{
+#if CONFIG_TASK_NAME_SIZE > 0
+	FAR struct tcb_s	*thisproc = sched_self();
+
+	return thisproc->name;
+#else
+	return "app";
+#endif
+}