modify nuttx bug of lack of files

2021-06-11 11:25:07 +08:00
parent 4a7f51a5e9
commit 6d0f2ca39a
6752 changed files with 1528133 additions and 0 deletions
@@ -0,0 +1,88 @@
+/****************************************************************************
+ * net/can/can_poll.c
+ * Poll for the availability of packet TX data
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#if defined(CONFIG_NET) && defined(CONFIG_NET_CAN)
+
+#include <debug.h>
+
+#include <nuttx/net/netconfig.h>
+#include <nuttx/net/netdev.h>
+
+#include "devif/devif.h"
+#include "can/can.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: can_poll
+ *
+ * Description:
+ *   Poll a packet "connection" structure for availability of TX data
+ *
+ * Input Parameters:
+ *   dev - The device driver structure to use in the send operation
+ *   conn - The packet "connection" to poll for TX data
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *   The network is locked.
+ *
+ ****************************************************************************/
+
+void can_poll(FAR struct net_driver_s *dev, FAR struct can_conn_s *conn)
+{
+  /* Verify that the packet connection is valid */
+
+  if (conn != NULL)
+    {
+      /* Setup for the application callback */
+
+      dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev)];
+      dev->d_len     = 0;
+      dev->d_sndlen  = 0;
+
+      /* Perform the application callback */
+
+      can_callback(dev, conn, CAN_POLL);
+
+      /* Check if the application has data to send */
+
+      if (dev->d_sndlen > 0)
+        {
+          return;
+        }
+    }
+
+  /* Make sure that d_len is zero meaning that there is nothing to be sent */
+
+  dev->d_len = 0;
+}
+
+#endif /* CONFIG_NET && CONFIG_NET_CAN */