introduce HCI states SLEEPING and FALLING_ASLEEP, introduce HCI power mode command SLEEP

TODO.txt

@@ -11,12 +11,26 @@
 - Cocoa run_loop: added timeouts, include in libBTstack.dylib build
 2010-xxxx: Release 0.2 - revions xxx
 - limit size of /tmp/hci_dump.pklg to 1000 packets (max 1 MB)
-
+- power handling: receive power notifications
    
 NEXT:
-- figure out how to receive iPhone System Power IONotifications (in BTdaemon) to detect, when phone gets locked
-- have a look at External Accessory interface by Apple - it's quite similar
+- power handling
+  - DONE: figure out how to receive iPhone System Power IONotifications (in BTdaemon) to detect, when phone gets locked and wakes up 
+  - DONE: introduce HCI states SLEEPING and FALLING_ASLEEP
+  - DONE: introduce HCI power mode command SLEEP
+  - stop all baseband connections on HCI_POWER_OFF and HCI_POWER_SLEEP
+  - for now, treat sleep/wake the same as power off/on
+  - decide on configure flags
+  - clean up components
+
+- decide what to do with the CocoaTouch code.
+  - do nothing
+  - add it to libBTstack.dylib
+  - provide a libBTstackCocoaTouch.dylib?  
+  
 - move RFCOMM code into BTdaemon
+- have a look at External Accessory interface by Apple - it's quite similar in function to BTstack
+
 - HCI CMD packet is limited to 1024 bytes payload. SDP records could be larger than that. Options:
   - provide a way to transfer SDP records in segments
   - ignore HCI command lenght on socket connection and directly stream data without buffer

include/btstack/hci_cmds.h

@@ -174,7 +174,8 @@ extern "C" {
  */
 typedef enum {
     HCI_POWER_OFF = 0,
-    HCI_POWER_ON 
+    HCI_POWER_ON,
+	HCI_POWER_SLEEP
 } HCI_POWER_MODE;
 
 /**
@@ -184,7 +185,9 @@ typedef enum {
     HCI_STATE_OFF = 0,
     HCI_STATE_INITIALIZING,
     HCI_STATE_WORKING,
-    HCI_STATE_HALTING
+    HCI_STATE_HALTING,
+	HCI_STATE_SLEEPING,
+	HCI_STATE_FALLING_ASLEEP
 } HCI_STATE;
 
 /**