Changes in uspace/lib/usbdev/src/request.c [3238506:49bd7ae2] in mainline

File:

• uspace/lib/usbdev/src/request.c (modified) (1 diff)

uspace/lib/usbdev/src/request.c

@@ -250 +250 @@
 }
 
+/** Change address of connected device.
+ * This function automatically updates the backing connection to point to
+ * the new address.
+ *
+ * @param pipe Control endpoint pipe (session must be already started).
+ * @param new_address New USB address to be set (in native endianness).
+ * @return Error code.
+ */
+int usb_request_set_address(usb_pipe_t *pipe,
+    usb_address_t new_address)
+{
+        if ((new_address < 0) || (new_address >= USB11_ADDRESS_MAX)) {
+                return EINVAL;
+        }
+
+        uint16_t addr = uint16_host2usb((uint16_t)new_address);
+
+        int rc = usb_control_request_set(pipe,
+            USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE,
+            USB_DEVREQ_SET_ADDRESS,
+            addr, 0,
+            NULL, 0);
+
+        if (rc != EOK) {
+                return rc;
+        }
+
+        assert(pipe->wire != NULL);
+        /* TODO: prevent other from accessing wire now. */
+        pipe->wire->address = new_address;
+
+        return EOK;
+}
+
 /** Retrieve USB descriptor of a USB device.
  *