[cooja-platform] Fixes for slip-bridge compatibility

* Added dev/uart1.h header file to cooja platform
* Added slip arch stub
* Suppress examples putchar definition as cooja platform provides its own

Note that the uart1.h file should only be an intermediate solution.
A generic contiki-wide definition for uart handling is required as each
platform defines its own varying set of uart functions.

platform/cooja/Makefile.cooja

@@ -52,7 +52,7 @@ COOJA_BASE	= simEnvChange.c cooja_mt.c cooja_mtarch.c rtimer-arch.c slip.c watch
 COOJA_INTFS	= beep.c button-sensor.c ip.c leds-arch.c moteid.c \
 		    pir-sensor.c rs232.c vib-sensor.c \
 		    clock.c log.c cfs-cooja.c cooja-radio.c \
-			eeprom.c
+			eeprom.c slip-arch.c
 
 COOJA_CORE = random.c sensors.c leds.c symbols.c
 

platform/cooja/contiki-conf.h

@@ -235,6 +235,10 @@ typedef unsigned long rtimer_clock_t;
 #if UIP_CONF_IPV6
 #endif /* UIP_CONF_IPV6 */
 
+/* Turn off example-provided putchars */
+#define SLIP_BRIDGE_CONF_NO_PUTCHAR 1
+
+
 #define CFS_CONF_OFFSET_TYPE	long
 
 /* include the project config */

platform/cooja/dev/uart1.h

@@ -0,0 +1,31 @@
+/*
+  Copied from mc1322x/dev/cpu. 
+  
+  This file exists as a work-around for the hardware dependant calls
+  to slip_arch_init.
+
+  Current the prototype for slip_arch_init is slip_arch_init(urb)
+
+  and a typical call is something like
+  slip_arch_init(BAUD2URB(115200))
+
+  BAUD2UBR is hardware specific, however. Furthermore, for the sky
+  platform it's typically defined with #include "dev/uart1.h" (see
+  rpl-boarder-router/slip-bridge.c), a sky specific file. dev/uart1.h
+  includes msp430.h which includes the sky contiki-conf.h which
+  defines BAUD2UBR.
+
+  To me, the correct think to pass is simply the baudrate and have the
+  hardware specific conversion happen inside slip_arch_init. 
+
+  Notably, most implementations just ignore the passed parameter
+  anyway. (except AVR)
+  
+ */
+
+#ifndef DEV_UART1_H
+#define DEV_UART1_H
+
+#define BAUD2UBR(x) x
+
+#endif

platform/cooja/slip-arch.c

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2014, TU Braunschweig
+ * 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.
+ *
+ */
+
+#include "dev/slip.h"
+#include "dev/rs232.h"
+
+void
+slip_arch_init(unsigned long ubr)
+{
+  rs232_set_input(slip_input_byte);
+}
+