cmake remove circular linking and reorganize

- px4_add_module now requires MAIN
 - px4_add_library doesn't automatically link

src/modules/simulator/ledsim/CMakeLists.txt

@@ -0,0 +1,35 @@
+############################################################################
+#
+#   Copyright (c) 2015 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.
+#
+############################################################################
+
+px4_add_library(drivers__ledsim led.cpp)
+target_link_libraries(drivers__ledsim PRIVATE drivers__led drivers_board)

src/modules/simulator/ledsim/led.cpp

@@ -0,0 +1,139 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 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.
+ *
+ ****************************************************************************/
+
+/**
+ * @file led.cpp
+ *
+ * LED driver.
+ */
+
+#include <px4_config.h>
+#include <drivers/drv_board_led.h>
+#include <stdio.h>
+
+#include "VirtDevObj.hpp"
+
+using namespace DriverFramework;
+
+/*
+ * Ideally we'd be able to get these from up_internal.h,
+ * but since we want to be able to disable the NuttX use
+ * of leds for system indication at will and there is no
+ * separate switch, we need to build independent of the
+ * CONFIG_ARCH_LEDS configuration switch.
+ */
+__BEGIN_DECLS
+extern void led_init();
+extern void led_on(int led);
+extern void led_off(int led);
+extern void led_toggle(int led);
+__END_DECLS
+
+class LED : public VirtDevObj
+{
+public:
+	LED();
+	virtual ~LED();
+
+	virtual int		init();
+	virtual int		devIOCTL(unsigned long cmd, unsigned long arg);
+
+protected:
+	virtual void		_measure() {}
+};
+
+LED::LED() :
+	VirtDevObj("led", "/dev/ledsim", LED_BASE_DEVICE_PATH, 0)
+{
+	// force immediate init/device registration
+	init();
+}
+
+LED::~LED()
+{
+}
+
+int
+LED::init()
+{
+	int ret = VirtDevObj::init();
+
+	if (ret == 0) {
+		led_init();
+	}
+
+	return ret;
+}
+
+int
+LED::devIOCTL(unsigned long cmd, unsigned long arg)
+{
+	int result = OK;
+
+	switch (cmd) {
+	case LED_ON:
+		led_on(arg);
+		break;
+
+	case LED_OFF:
+		led_off(arg);
+		break;
+
+	case LED_TOGGLE:
+		led_toggle(arg);
+		break;
+
+
+	default:
+		result = VirtDevObj::devIOCTL(cmd, arg);
+	}
+
+	return result;
+}
+
+namespace
+{
+LED	*gLED;
+}
+
+void
+drv_led_start(void)
+{
+	if (gLED == nullptr) {
+		gLED = new LED;
+
+		if (gLED != nullptr) {
+			gLED->init();
+		}
+	}
+}