added support for pic32 (PIC32MX795F512L)

2012-12-17 09:14:23 +01:00 · 2012-12-17 09:14:23 +01:00 · f68df3a81c
commit f68df3a81c
parent 70e46f3248
21 changed files with 2414 additions and 0 deletions
--- a/cpu/pic32/rtimer-arch.c
+++ b/cpu/pic32/rtimer-arch.c
@ -0,0 +1,112 @@
+/*
+ * Contiki PIC32 Port project
+ * 
+ * Copyright (c) 2012,
+ *  Scuola Superiore Sant'Anna (http://www.sssup.it) and
+ *  Consorzio Nazionale Interuniversitario per le Telecomunicazioni
+ *  (http://www.cnit.it).
+ *
+ * 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.
+ *
+ */
+
+/**
+ * \addtogroup pic32 PIC32 Contiki Port
+ *
+ * @{
+ */
+
+/**
+ * \file   rtimer-arch.c
+ * \brief  PIC32MX RTIMER routines
+ * \author Giovanni Pellerano <giovanni.pellerano@evilaliv3.org>
+ * \date   2012-04-11
+ */
+
+/*
+ * PIC32MX795F512L - Specific Functions
+ * 
+ * All the functions in this part of the file are specific for the
+ * pic32mx795f512l that is characterized by registers' name that differ from
+ * the 3xx and 4xx families of the pic32mx.
+ */
+
+#include <pic32_timer.h>
+
+#include "contiki.h"
+
+#include <sys/rtimer.h>
+#include <sys/clock.h>
+
+#include <stdio.h>
+
+#include <p32xxxx.h>
+
+static uint32_t schedule;
+
+/*---------------------------------------------------------------------------*/
+void
+rtimer_callback(void)
+{
+  pic32_timer23_disable_irq();
+  TMR2 = schedule;
+
+  rtimer_run_next();
+}
+/*---------------------------------------------------------------------------*/
+void
+rtimer_arch_init(void)
+{
+  pic32_timer23_disable_irq();
+  IPC3CLR = _IPC3_T3IP_MASK | _IPC3_T3IS_MASK;
+  IPC3SET = (7 << _IPC3_T3IP_POSITION) | (3 << _IPC3_T3IS_POSITION);
+  T2CON = 0;
+  T3CON = 0;     
+  T2CONSET = _T2CON_T32_MASK | (TIMER_B_PRESCALE_256 << _T2CON_TCKPS_POSITION);
+  PR2 =  0xFFFFFFFF;
+  TMR2 = 0;
+  pic32_timer23_start();
+}
+/*---------------------------------------------------------------------------*/
+rtimer_clock_t
+rtimer_arch_now(void)
+{
+  return TMR2;
+}
+/*---------------------------------------------------------------------------*/
+void
+rtimer_arch_schedule(rtimer_clock_t t)
+{
+  schedule = t;
+  PR2 =  t;
+  pic32_timer23_enable_irq();
+}
+/*---------------------------------------------------------------------------*/
+
+TIMER_INTERRUPT(3, rtimer_callback);
+
+/** @} */