Import of the contiki-2.x development code from the SICS internal CVS server

cpu/avr/dev/rs232.c

@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2005, Swedish Institute of Computer Science
+ * 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.
+ *
+ * @(#)$Id: rs232.c,v 1.1 2006/06/17 22:41:21 adamdunkels Exp $
+ */
+
+#include <avr/io.h>
+#include <avr/signal.h>
+#include <avr/interrupt.h>
+#include <avr/pgmspace.h>
+
+#include "contiki.h"
+#include "dev/slip.h"
+#include "dev/serial.h"
+#include "dev/rs232.h"
+
+static volatile unsigned char txwait;
+/*static unsigned char slipmode;*/
+
+static int (* input_handler)(unsigned char) = NULL;
+
+/*---------------------------------------------------------------------------*/
+SIGNAL(SIG_UART0_TRANS)
+{
+  txwait = 0;
+}
+/*---------------------------------------------------------------------------*/
+SIGNAL(SIG_UART0_RECV)
+{
+  unsigned char c;
+
+  c = UDR0;
+
+  if(input_handler != NULL) {
+    input_handler(c);
+  }
+  
+  /*  if(slipmode) {
+    slip_input_byte(c);
+  } else {
+    serial_input_byte(c);
+    }*/
+}
+/*---------------------------------------------------------------------------*/
+void
+rs232_init(void)
+{
+  /* Enable transmit. */
+  UCSR0B = _BV(RXCIE) | _BV(TXCIE) | _BV(RXEN) | _BV(TXEN);
+  /* Set baud rate (23 =~ 38400) */
+  UBRR0H = 0;
+  UBRR0L = 23;
+
+  /*  slipmode = 0;*/
+  txwait = 0;
+
+  input_handler = NULL;
+}
+/*---------------------------------------------------------------------------*/
+/*void
+rs232_init_slip(void)
+{
+  rs232_init();
+  slipmode  = 1;
+}*/
+/*---------------------------------------------------------------------------*/
+void
+rs232_print_p(prog_char *buf)
+{
+  while(pgm_read_byte(buf)) {
+    rs232_send(pgm_read_byte(buf));
+    ++buf;
+  }
+}
+/*---------------------------------------------------------------------------*/
+void
+rs232_print(char *buf)
+{
+  while(*buf) {
+    rs232_send(*buf++);
+  }
+}
+/*---------------------------------------------------------------------------*/
+void
+rs232_send(unsigned char c)
+{
+  txwait = 1;
+  UDR0 = c;
+  while(txwait);
+}
+/*---------------------------------------------------------------------------*/
+void
+rs232_set_input(int (*f)(unsigned char))
+{
+  input_handler = f;
+}
+/*---------------------------------------------------------------------------*/
+void
+slip_arch_writeb(unsigned char c)
+{
+  rs232_send(c);
+}
+/*---------------------------------------------------------------------------*/