[gnome-color-manager: 21/80] huey: discover a 32 bit register with no clear meaning

[Richard Hughes <rhughes src gnome org>]

commit 0375ef91fab87cb37fb742b7cce82aef2a7e4196
Author: Richard Hughes <richard hughsie com>
Date:   Sat Jul 17 22:48:18 2010 +0100

    huey: discover a 32 bit register with no clear meaning
    
    Although, it only ever seems to have 3 values...

 src/gcm-huey-example.c |   40 +++++++++++++++++++++++++++++++++++-----
 1 files changed, 35 insertions(+), 5 deletions(-)
---
diff --git a/src/gcm-huey-example.c b/src/gcm-huey-example.c
index 05c0d59..3da349f 100644
--- a/src/gcm-huey-example.c
+++ b/src/gcm-huey-example.c
@@ -57,15 +57,24 @@
  * Only used when doing profiling */
 #define HUEY_COMMAND_UNKNOWN_03		0x03
 
-/* returns: all NULL for NULL input: 00 05 00 00 00 00 00 00 for f1 f2 f3 f4 f5 f6 f7 f8 */
-#define HUEY_COMMAND_UNKNOWN_05		0x05
+/* input:   11 12 13 14 15 16 17 18
+ * returns: 00 05 00 00 00 00 00 00
+ *              ^--- always the same no matter the input
+ *
+ * never used in profiling */
+#define HUEY_COMMAND_SET_VALUE		0x05
 
 /* input:   06 f1 f2 f3 f4 f5 f6 f7
- * returns: 00 06 f1 f2 f3 f4 00 00
- *    4 bytes ----^
+ * returns: 00 06 11 12 13 14 00 00
+ *    4 bytes ----^^^^^^^^^^^ (from HUEY_COMMAND_SET_VALUE)
+ *
+ * This is some sort of 32bit register on the device -- the
+ * default value at plug-in is 00 0f 42 40, although during profiling it is set to
+ * 00 00 6f 00 and then 00 00 61 00.
+ *
  * returns: all NULL for NULL input
  */
-#define HUEY_COMMAND_UNKNOWN_06		0x06
+#define HUEY_COMMAND_GET_VALUE		0x06
 
 /* returns: all NULL all of the time
  * NEVER USED */
@@ -481,6 +490,27 @@ if (0) {
 	}
 }
 
+{
+	guchar payload[] = { 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 };
+	g_warning ("moo");
+
+	/* get default value when device is plugged */
+	send_command (priv, HUEY_COMMAND_GET_VALUE, payload, &error);
+
+	send_command (priv, HUEY_COMMAND_SET_VALUE, payload, &error);
+
+	payload[0] = 0x01;
+	payload[1] = 0x02;
+	payload[2] = 0x03;
+	payload[3] = 0x04;
+	payload[4] = 0x05;
+	payload[5] = 0x06;
+	payload[6] = 0x07;
+
+	send_command (priv, HUEY_COMMAND_GET_VALUE, payload, &error);
+	g_warning ("moo");
+}
+
 	/* set LEDs */
 	ret = send_leds (priv, 0x00, &error);
 	if (!ret) {