Adding machine dependent SLIP routines for UART0.

2010-09-20 18:30:25 +00:00 · 2010-09-20 18:30:25 +00:00 · ce8bb8df9c
commit ce8bb8df9c
parent 6104922c40
1 changed files with 93 additions and 0 deletions
--- a/platform/micaz/dev/slip_uart0.c
+++ b/platform/micaz/dev/slip_uart0.c
@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2010, University of Colombo School of Computing
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * @(#)$$
+ */
+
+/**
+ * \file
+ *         Machine dependent AVR SLIP routines for UART0.
+ * \author
+ *         Kasun Hewage <kasun.ch@gmail.com>
+ */
+
+#include <stdio.h>
+#include "contiki.h"
+#include "dev/rs232.h"
+#include "slip.h"
+
+/*---------------------------------------------------------------------------*/
+static int
+slip_putchar(char c, FILE *stream)
+{
+#define SLIP_END 0300
+  static char debug_frame = 0;
+
+  if (!debug_frame) {        /* Start of debug output */
+    slip_arch_writeb(SLIP_END);
+    slip_arch_writeb('\r'); /* Type debug line == '\r' */
+    debug_frame = 1;
+  }
+
+  slip_arch_writeb((unsigned char)c);
+          
+  /*
+   * Line buffered output, a newline marks the end of debug output and
+   * implicitly flushes debug output.         
+   */
+  if (c == '\n') {
+    slip_arch_writeb(SLIP_END);
+    debug_frame = 0;
+  }
+
+  return c;
+}
+/*---------------------------------------------------------------------------*/
+static FILE slip_stdout = FDEV_SETUP_STREAM(slip_putchar, NULL,
+                                            _FDEV_SETUP_WRITE);
+/*---------------------------------------------------------------------------*/
+void
+slip_arch_init(unsigned long ubr)
+{
+  rs232_set_input(RS232_PORT_0, slip_input_byte);
+  stdout = &slip_stdout;
+}
+/*---------------------------------------------------------------------------*/
+/*
+ XXX:
+      Currently, the following function is in cpu/avr/dev/rs232.c file. this
+      should be moved to here from there hence this is a platform specific slip 
+      related function. 
+void
+slip_arch_writeb(unsigned char c)
+{
+  rs232_send(RS232_PORT_0, c);
+}
+*/