修改了Web后台的部分界面，增加了HAmqtt中的总电量传感器，后台新增mqtt上报频率设置

mico-os/libraries/utilities/json_c/printbuf.h

@@ -0,0 +1,66 @@
+/*
+ * $Id: printbuf.h,v 1.4 2006/01/26 02:16:28 mclark Exp $
+ *
+ * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd.
+ * Michael Clark <michael@metaparadigm.com>
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See COPYING for details.
+ *
+ *
+ * Copyright (c) 2008-2009 Yahoo! Inc.  All rights reserved.
+ * The copyrights to the contents of this file are licensed under the MIT License
+ * (http://www.opensource.org/licenses/mit-license.php)
+ */
+
+#ifndef _printbuf_h_
+#define _printbuf_h_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#undef PRINTBUF_DEBUG
+
+struct printbuf {
+  char *buf;
+  int bpos;
+  int size;
+};
+
+extern struct printbuf*
+printbuf_new(void);
+
+/* As an optimization, printbuf_memappend_fast is defined as a macro
+ * that handles copying data if the buffer is large enough; otherwise
+ * it invokes printbuf_memappend_real() which performs the heavy
+ * lifting of realloc()ing the buffer and copying data.
+ * Your code should not use printbuf_memappend directly--use
+ * printbuf_memappend_fast instead.
+ */
+extern int
+printbuf_memappend(struct printbuf *p, const char *buf, int size);
+
+#define printbuf_memappend_fast(p, bufptr, bufsize)          \
+do {                                                         \
+  if ((p->size - p->bpos) > bufsize) {                       \
+    memcpy(p->buf + p->bpos, (bufptr), bufsize);             \
+    p->bpos += bufsize;                                      \
+    p->buf[p->bpos]= '\0';                                   \
+  } else {  printbuf_memappend(p, (bufptr), bufsize); }      \
+} while (0)
+
+extern int
+sprintbuf(struct printbuf *p, const char *msg, ...);
+
+extern void
+printbuf_reset(struct printbuf *p);
+
+extern void
+printbuf_free(struct printbuf *p);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif