From 42149b637398df42efa3678daf60dd39add8927c Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Thu, 27 Dec 2012 14:01:59 +0000
Subject: [PATCH] Add support for key release events

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5464 42af7a65-404d-4744-a932-0658087f49c3
---
 ChangeLog.txt                 |  5 ++++-
 examples/hidkbd/hidkbd_main.c | 33 +++++++++++++++++++++++++--------
 2 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/ChangeLog.txt b/ChangeLog.txt
index d156b1065..d6a2f9d90 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -455,4 +455,7 @@
 	  this build phase.
 	* apps/examples/hidbkd: Now supports decoding of encoded special keys
 	  if CONFIG_EXAMPLES_HIDKBD_ENCODED is defined.
-
+	* apps/examples/hidbkd:  Add support for decoding key release events
+	  as well.  However, the USB HID keyboard drier has not yet been
+	  updated to detect key release events.  That is kind of tricky in
+	  the USB HID keyboard report data.
diff --git a/examples/hidkbd/hidkbd_main.c b/examples/hidkbd/hidkbd_main.c
index 8a632bab7..d7e79b121 100644
--- a/examples/hidkbd/hidkbd_main.c
+++ b/examples/hidkbd/hidkbd_main.c
@@ -176,7 +176,7 @@ static void hidkbd_decode(FAR char *buffer, ssize_t nbytes)
     {
       /* Decode the next thing from the buffer */
 
-      ret = kbd_get((FAR struct lib_instream_s *)&kbdstream, &state, &ch);
+      ret = kbd_decode((FAR struct lib_instream_s *)&kbdstream, &state, &ch);
       if (ret == KBD_ERROR)
         {
           break;
@@ -184,14 +184,31 @@ static void hidkbd_decode(FAR char *buffer, ssize_t nbytes)
 
       /* Normal data?  Or special key? */
 
-      if (ret == KBD_NORMAL)
+      switch (ret)
         {
-          printf("Data:   %c [%02x]\n", isprint(ch) ? ch : '.', ch);
-        }
-      else
-        {
-          DEBUGASSERT(ret == KBD_SPECIAL);
-          printf("Special: %d\n", ch);
+        case KBD_PRESS: /* Key press event */
+          printf("Normal Press:    %c [%02x]\n", isprint(ch) ? ch : '.', ch);
+          break;
+
+        case KBD_RELEASE: /* Key release event */
+          printf("Normal Release:  %c [%02x]\n", isprint(ch) ? ch : '.', ch);
+          break;
+
+        case KBD_SPECPRESS: /* Special key press event */
+          printf("Special Press:   %d\n", ch);
+          break;
+
+        case KBD_SPECREL: /* Special key release event */
+          printf("Special Release: %d\n", ch);
+          break;
+
+        case KBD_ERROR: /* Error or end-of-file */
+          printf("EOF:             %d\n", ret);
+          break;
+
+        default:
+          printf("Unexpected:      %d\n", ret);
+          break;
         }
     }
 }