Changeset 8f62b0f in mainline for uspace/lib/usb/src/hcdhubd.c

Timestamp:

2010-11-21T22:52:34Z (13 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

f0da4eb2

Parents:

c4ba29c7

Message:

Add example of usb_hc_async usage

The example simply sets address of the root hub.

File:

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

uspace/lib/usb/src/hcdhubd.c

@@ -34 +34 @@
  */
 #include <usb/hcdhubd.h>
+#include <usb/devreq.h>
 #include <usbhc_iface.h>
 #include <driver.h>
@@ -55 +56 @@
         .interfaces[USBHC_DEV_IFACE] = &usb_interface
 };
+
+static void set_hub_address(usb_hc_device_t *hc, usb_address_t address);
 
 /** Callback when new device is detected and must be handled by this driver.
@@ -98 +101 @@
                 return EOK;
         } else {
+                usb_hc_device_t *hc = list_get_instance(hc_list.next, usb_hc_device_t, link);
+                set_hub_address(hc, 5);
+
                 /*
                  * We are some (probably deeply nested) hub.
@@ -103 +109 @@
                  * connected devices.
                  */
+
                 return ENOTSUP;
         }
+}
+
+/** Sample usage of usb_hc_async functions.
+ * This function sets hub address using standard SET_ADDRESS request.
+ *
+ * @warning This function shall be removed once you are familiar with
+ * the usb_hc_ API.
+ *
+ * @param hc Host controller the hub belongs to.
+ * @param address New hub address.
+ */
+static void set_hub_address(usb_hc_device_t *hc, usb_address_t address)
+{
+        printf("%s: setting hub address to %d\n", hc->generic->name, address);
+        usb_target_t target = {0, 0};
+        usb_handle_t handle;
+        int rc;
+
+        usb_device_request_setup_packet_t setup_packet = {
+                .request_type = 0,
+                .request = USB_DEVREQ_SET_ADDRESS,
+                .index = 0,
+                .length = 0,
+        };
+        setup_packet.value = address;
+
+        rc = usb_hc_async_control_write_setup(hc, target,
+            &setup_packet, sizeof(setup_packet), &handle);
+        if (rc != EOK) {
+                return;
+        }
+
+        rc = usb_hc_async_wait_for(handle);
+        if (rc != EOK) {
+                return;
+        }
+
+        rc = usb_hc_async_control_write_status(hc, target, &handle);
+        if (rc != EOK) {
+                return;
+        }
+
+        rc = usb_hc_async_wait_for(handle);
+        if (rc != EOK) {
+                return;
+        }
+
+        printf("%s: hub address changed\n", hc->generic->name);
 }
 
@@ -211 +266 @@
 
         /*
-         * For testing/debugging purposes only.
-         * Try to send some data to default USB address.
-         */
-        usb_target_t target = {0, 0};
-        usb_handle_t handle = 0;
-        char *data = (char *) "Hello, World!";
-
-
-        (void)usb_hc_async_interrupt_out(dev, target, data, str_length(data), &handle);
-        (void)usb_hc_async_wait_for(handle);
-
-        /*
          * Announce presence of child device.
          */