Changeset 2f60e57d in mainline for uspace/lib/usb/src/hidparser.c

Timestamp:

2011-01-14T13:05:17Z (13 years ago)

Author:

Matej Klonfar <maklf@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0a9ea4a, 1d7a74e, 7a725b13, 976f546

Parents:

00c2d035

Message:

trac #27 - Boot protocol HID report parser

File:

• uspace/lib/usb/src/hidparser.c (modified) (5 diffs)

uspace/lib/usb/src/hidparser.c

@@ -40 +40 @@
  * @param parser Opaque HID report parser structure.
  * @param data Data describing the report.
- * @param size Size of the descriptor in bytes.
  * @return Error code.
  */
@@ -55 +54 @@
  * @param parser Opaque HID report parser structure.
  * @param data Data for the report.
- * @param size Size of the data in bytes.
  * @param callbacks Callbacks for report actions.
  * @param arg Custom argument (passed through to the callbacks).
@@ -66 +64 @@
         int i;
         
-        // TODO: parse report
+        /* main parsing loop */
+        while(0){
+        }
         
-        uint16_t keys[6];
+        
+        uint8_t keys[6];
         
         for (i = 0; i < 6; ++i) {
@@ -74 +75 @@
         }
         
-        callbacks->keyboard(keys, 6, arg);
-        
+        callbacks->keyboard(keys, 6, 0, arg);
+
+        return EOK;
+}
+
+/** Free the HID report parser structure 
+ *
+ * @param parser Opaque HID report parser structure
+ * @return Error code
+ */
+int usb_hid_free_report_parser(usb_hid_report_parser_t *parser)
+{
+
         return EOK;
 }
@@ -81 +93 @@
 
 /**
+ * Parse input report.
+ *
+ * @param data Data for report
+ * @param size Size of report
+ * @param callbacks Callbacks for report actions
+ * @param arg Custom arguments
+ *
+ * @return Error code
+ */
+int usb_hid_boot_keyboard_input_report(const uint8_t *data, size_t size,
+        const usb_hid_report_in_callbacks_t *callbacks, void *arg)
+{
+        int i;
+        usb_hid_report_item_t item;
+
+        /* fill item due to the boot protocol report descriptor */
+        // modifier keys are in the first byte
+        uint8_t modifiers = data[0];
+
+        item.offset = 2; /* second byte is reserved */
+        item.size = 8;
+        item.count = 6;
+        item.usage_min = 0;
+        item.usage_max = 255;
+        item.logical_min = 0;
+        item.logical_max = 255;
+
+        if(size != 8){
+                return -1;
+        }
+
+        uint8_t keys[6];
+        for(i=item.offset; i<item.count; i++) {
+                keys[i-2] = data[i];
+        }
+
+        callbacks->keyboard(keys, 6, modifiers, arg);
+        return EOK;
+}
+
+/**
+ * Makes output report for keyboard boot protocol
+ *
+ * @param leds
+ * @param output Output report data buffer
+ * @param size Size of the output buffer
+ * @return Error code
+ */
+int usb_hid_boot_keyboard_output_report(uint8_t leds, uint8_t *data, size_t size)
+{
+        if(size != 1){
+                return -1;
+        }
+
+        /* used only first five bits, others are only padding*/
+        *data = leds;
+        return EOK;
+}
+
+/**
  * @}
  */