SWM050: Finishes GPIO, IAP flash, sysclock, sleep/stop, and the sysctl memory map.

Updates the main memory map and the makefile.
Adds the SWM050 to devices.data, so that a linker script can be automatically generated.

Reviewed-by: Karl Palsson <karlp@tweak.net.au>

lib/swm050/pwr.c

@@ -0,0 +1,41 @@
+/** @addtogroup pwr_file Power/Sleep API
+ * @ingroup peripheral_apis
+ * LGPL License Terms @ref lgpl_license
+ * @author @htmlonly © @endhtmlonly 2019
+ * Caleb Szalacinski <contact@skiboy.net>
+ */
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2019 Caleb Szalacinski <contact@skiboy.net>
+ *
+ * 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/swm050/sysctl.h>
+#include <libopencm3/swm050/pwr.h>
+
+/*---------------------------------------------------------------------------*/
+/** @brief Go into sleep mode
+
+Goes to sleep and wakes up on when GPIO pin 9 is pulled low.  Please give
+yourself enough time to connect the debugger before calling this, in order to
+not get locked out of the MCU.
+
+*/
+void pwr_sleep(void)
+{
+	SYSCTL_SYS_CFG_2 |= (1<<4);
+}
+/**@}*/