Changes so this checkout exactly matches CVS at -r release_tinyos_2_0_2_2.

[tinyos-2.x.git] / tos / lib / TOSBoot / telosb / PowerOffM.nc

diff --git a/tos/lib/TOSBoot/telosb/PowerOffM.nc b/tos/lib/TOSBoot/telosb/PowerOffM.nc
new file mode 100644 (file)
index 0000000..404f892
--- /dev/null
+++ b/tos/lib/TOSBoot/telosb/PowerOffM.nc
@@ -0,0 +1,85 @@
+// $Id$
+
+/*                                                                     tab:2
+ *
+ *
+ * "Copyright (c) 2000-2004 The Regents of the University  of California.  
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice, the following
+ * two paragraphs and the author appear in all copies of this software.
+ * 
+ * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
+ * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
+ *
+ */
+
+/**
+ * @author Jonathan Hui <jwhui@cs.berkeley.edu>
+ */
+
+module PowerOffM {
+  provides {
+    interface Init;
+    interface StdControl;
+  }
+  uses {
+    interface Leds;
+    interface StdControl as SubControl;
+  }
+}
+
+implementation {
+
+  void haltsystem() {
+
+    uint16_t _lpmreg;
+
+    TOSH_SET_PIN_DIRECTIONS();
+
+    call SubControl.stop();
+
+    call Leds.glow(0x7, 0x0);
+
+    _lpmreg = LPM4_bits;
+    _lpmreg |= SR_GIE;
+
+    __asm__ __volatile__( "bis  %0, r2" : : "m" ((uint16_t)_lpmreg) );
+
+  }
+
+  command error_t Init.init() {
+    return SUCCESS;
+  }
+
+  command error_t StdControl.start() {
+
+    int i;
+
+    // wait a short period for things to stabilize
+    for ( i = 0; i < 4; i++ )
+      wait(0xffff);
+
+    // if user button is pressed, power down
+    if (!TOSH_READ_USERINT_PIN())
+      haltsystem();
+
+    return SUCCESS;
+
+  }
+
+  command error_t StdControl.stop() {
+    return SUCCESS;
+  }
+
+}