From 6ce955a71f31f0a190574de268f86395610310a4 Mon Sep 17 00:00:00 2001
From: Edvard Pettersen <a0132644@ti.com>
Date: Fri, 16 Feb 2018 18:50:09 +0100
Subject: [PATCH] Added slip driver

---
 arch/cpu/simplelink/Makefile.simplelink |  2 +-
 arch/cpu/simplelink/dev/slip-arch.c     | 68 +++++++++++++++++++++++++
 arch/cpu/simplelink/dev/uart0-arch.h    |  6 +--
 3 files changed, 72 insertions(+), 4 deletions(-)
 create mode 100644 arch/cpu/simplelink/dev/slip-arch.c

diff --git a/arch/cpu/simplelink/Makefile.simplelink b/arch/cpu/simplelink/Makefile.simplelink
index 0f8765d44..8f6a1e51c 100644
--- a/arch/cpu/simplelink/Makefile.simplelink
+++ b/arch/cpu/simplelink/Makefile.simplelink
@@ -64,7 +64,7 @@ CONTIKI_CPU_DIRS += dev rf-settings
 ### CPU-dependent source files
 CONTIKI_CPU_SOURCEFILES += rtimer-arch.c clock-arch.c
 CONTIKI_CPU_SOURCEFILES += watchdog-arch.c putchar-arch.c
-CONTIKI_CPU_SOURCEFILES += uart0-arch.c
+CONTIKI_CPU_SOURCEFILES += uart0-arch.c slip-arch.c
 CONTIKI_CPU_SOURCEFILES += rf-common.c
 CONTIKI_CPU_SOURCEFILES += rf-prop-mode.c rf-prop-settings.c
 CONTIKI_CPU_SOURCEFILES += rf-ieee-mode.c rf-ieee-settings.c
diff --git a/arch/cpu/simplelink/dev/slip-arch.c b/arch/cpu/simplelink/dev/slip-arch.c
new file mode 100644
index 000000000..c8d3cea2a
--- /dev/null
+++ b/arch/cpu/simplelink/dev/slip-arch.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2018, Texas Instruments Incorporated - http://www.ti.com/
+ * 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 copyright holder 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT HOLDER 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.
+ */
+/*---------------------------------------------------------------------------*/
+/**
+ * \addtogroup cc26xx-char-io
+ * @{
+ *
+ * \file
+ * Arch-specific SLIP functions for the CC13xx/CC26xx
+ */
+/*---------------------------------------------------------------------------*/
+#include <contiki.h>
+#include <dev/slip.h>
+/*---------------------------------------------------------------------------*/
+#include "dev/uart0-arch.h"
+/*---------------------------------------------------------------------------*/
+/**
+ * \brief Write a byte over SLIP
+ * \param c the byte
+ */
+void
+slip_arch_writeb(unsigned char c)
+{
+  uart0_write(&c, 1);
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * \brief Initialise the arch-specific SLIP driver
+ */
+void
+slip_arch_init()
+{
+  // Enable an input handler. In doing so, the driver will make sure that UART
+  // RX stays operational during deep sleep
+  uart0_init();
+  uart0_set_callback(slip_input_byte);
+}
+/*---------------------------------------------------------------------------*/
+
+/** @} */
diff --git a/arch/cpu/simplelink/dev/uart0-arch.h b/arch/cpu/simplelink/dev/uart0-arch.h
index 7266a4db5..0a54d2a73 100644
--- a/arch/cpu/simplelink/dev/uart0-arch.h
+++ b/arch/cpu/simplelink/dev/uart0-arch.h
@@ -41,11 +41,11 @@
  */
 #ifndef UART0_ARCH_H_
 #define UART0_ARCH_H_
-
+/*---------------------------------------------------------------------------*/
+#include <stddef.h>
 #include <stdint.h>
-
+/*---------------------------------------------------------------------------*/
 typedef int (*uart0_input_cb)(unsigned char);
-
 /*---------------------------------------------------------------------------*/
 /** \name UART functions
  * @{