Changeset dec55ce in mainline for uspace/app/usbinfo/hid.c

Timestamp:

2011-06-17T20:32:22Z (14 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

e9c02b7

Parents:

54d4b9e

Message:

A bit of refactoring

File:

• uspace/app/usbinfo/hid.c (modified) (3 diffs)

uspace/app/usbinfo/hid.c

@@ -61 +61 @@
 }
 
+/** Dumps HID report in raw format.
+ *
+ * @param iface_no USB interface the report belongs to.
+ * @param report Report descriptor.
+ * @param size Size of the @p report in bytes.
+ */
+static void dump_hid_report_raw(int iface_no, uint8_t *report, size_t size)
+{
+        printf("%sHID report descriptor for interface %d", get_indent(0),
+            iface_no);
+        for (size_t i = 0; i < size; i++) {
+                size_t line_idx = i % BYTES_PER_LINE;
+                if (line_idx == 0) {
+                        printf("\n%s", get_indent(1));
+                }
+                printf("%02X", (int) report[i]);
+                if (line_idx + 1 < BYTES_PER_LINE) {
+                        printf(" ");
+                }
+        }
+        printf("\n");
+}
+
 /** Retrieves HID report from given USB device and dumps it.
  *
@@ -72 +95 @@
         assert(report_size > 0);
 
-        uint8_t *report = malloc(report_size);
-        if (report == NULL) {
+        uint8_t *raw_report = malloc(report_size);
+        if (raw_report == NULL) {
                 usb_log_warning(
                     "Failed to allocate %zuB, skipping interface %d.\n",
@@ -84 +107 @@
             USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_INTERFACE,
             USB_DESCTYPE_HID_REPORT, 0, iface_no,
-            report, report_size, &actual_report_size);
+            raw_report, report_size, &actual_report_size);
         if (rc != EOK) {
                 usb_log_error("Failed to retrieve HID report descriptor: %s.\n",
                     str_error(rc));
-                free(report);
+                free(raw_report);
                 return;
         }
 
-        printf("%sHID report descriptor for interface %d", get_indent(0),
-            (int) iface_no);
-        for (size_t i = 0; i < report_size; i++) {
-                size_t line_idx = i % BYTES_PER_LINE;
-                if (line_idx == 0) {
-                        printf("\n%s", get_indent(1));
-                }
-                printf("%02X", (int) report[i]);
-                if (line_idx + 1 < BYTES_PER_LINE) {
-                        printf(" ");
-                }
-        }
-        printf("\n");
+        dump_hid_report_raw(iface_no, raw_report, report_size);
 
-        free(report);
+        free(raw_report);
 }