add the NxScope library - a real-time data logging tool

logging/nxscope/nxscope_internals.c

@@ -0,0 +1,82 @@
+/****************************************************************************
+ * apps/logging/nxscope/nxscope_internals.c
+ *
+ * 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>
+
+#include <assert.h>
+#include <debug.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#include <logging/nxscope/nxscope.h>
+
+#include "nxscope_internals.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxscope_stream_send
+ *
+ * Description:
+ *   Send stream buffer
+ *
+ * Input Parameters:
+ *   s      - a pointer to a nxscope instance
+ *   buff   - buffer to send
+ *   buff_i - buffer cursor
+ *
+ ****************************************************************************/
+
+int nxscope_stream_send(FAR struct nxscope_s *s, FAR uint8_t *buff,
+                        FAR size_t *buff_i)
+{
+  int ret = OK;
+
+  DEBUGASSERT(s);
+  DEBUGASSERT(buff);
+  DEBUGASSERT(buff_i);
+
+  /* Finalize stream frame */
+
+  ret = PROTO_FRAME_FINAL(s, s->proto_stream,
+                          NXSCOPE_HDRID_STREAM, buff, buff_i);
+  if (ret < 0)
+    {
+      _err("ERROR: PROTO_FRAME_FINAL failed %d\n", ret);
+      goto errout;
+    }
+
+  /* Send stream data */
+
+  ret = INTF_SEND(s, s->intf_stream, buff, *buff_i);
+  if (ret < 0)
+    {
+      _err("ERROR: INTF_SEND failed %d\n", ret);
+    }
+
+errout:
+  return ret;
+}