deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Initial PicoRV32 target

Browse source
This commit is contained in:
Ralf Schlatterbeck 2016-03-31 12:47:05 +02:00
parent 743245e230
commit 57959a53f6
17 changed files with 1714 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

77
cpu/pico-rv32/Makefile.pico-rv32 Normal file
View file

@ -0,0 +1,77 @@
CONTIKI_CPU_DIRS = . dev
### Define the CPU directory of the AVR port
CONTIKI_CPU=$(CONTIKI)/cpu/pico-rv32
PICORV32_SOURCES = mtarch.c rtimer-arch.c clock.c watchdog.c
CONTIKI_TARGET_SOURCEFILES += $(PICORV32_SOURCES) $(SENSORS) $(SYSAPPS) \
nullsec.c
CONTIKI_SOURCEFILES += $(CONTIKI_TARGET_SOURCEFILES)
### Compiler definitions
CC = riscv32-unknown-elf-gcc
CXX = riscv32-unknown-elf-g++
LD = riscv32-unknown-elf-gcc
AS = riscv32-unknown-elf-as
AR = riscv32-unknown-elf-ar
ELF_SIZE = riscv32-unknown-elf-size
NM = riscv32-unknown-elf-nm
OBJCOPY = riscv32-unknown-elf-objcopy
STRIP = riscv32-unknown-elf-strip
ifdef WERROR
CFLAGSWERROR=-Werror
endif
CFLAGSNO = -Wall -g \
-I$(CONTIKI)/platform/$(TARGET) \
-I. -I$(CONTIKI)/core -I$(CONTIKI_CPU)
CFLAGS += $(CFLAGSNO) -Os
ifeq ($(HOST_OS),Darwin)
AROPTS = -r
LDFLAGS += -Wl,-flat_namespace
CFLAGS += -DHAVE_SNPRINTF=1 -U__ASSERT_USE_STDERR
else
ifeq ($(HOST_OS),Linux)
LDFLAGS += -Wl,-Map=contiki-$(TARGET).map,-export-dynamic
endif
endif
### Setup directory search path for source files
CONTIKI_TARGET_DIRS_CONCAT = ${addprefix $(CONTIKI)/platform/$(TARGET)/, \
$(CONTIKI_TARGET_DIRS)}
### Compilation rules
# Vertical bar | symbol denotes an order-only dependency: Timestamp is
# ignored on the directory (otherwise everything would be rebuilt
# everytime)
$(OBJECTDIR)/%.o: %.c | $(OBJECTDIR)
$(CC) $(CFLAGS) -c $< -o $@
%.o: %.c
$(CC) $(CFLAGS) -c $< -o $@
$(OBJECTDIR)/%.o: %.cpp | $(OBJECTDIR)
$(CXX) $(CFLAGS) -c $< -o $@
%.o: %.cpp
$(CXX) $(CFLAGS) -c $< -o $@
%.ko: %.o
$(STRIP) -K _init -K _fini --strip-unneeded -g -x $< -o $@
%.elf: %.co $(PROJECT_OBJECTFILES) contiki-$(TARGET).a symbols.o
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(filter-out %.a,$^) \
$(filter %.a,$^) $(LDLIBS)
%.hex: %.$(TARGET)
$(OBJCOPY) $^ -j .text -j .data -O ihex $@
%.ihex: %.$(TARGET)
$(OBJCOPY) $^ -O ihex $@
%-stripped.o: %.o
$(STRIP) --strip-unneeded -g -x -o $@ $<

184
cpu/pico-rv32/dev/clock.c Normal file
View file

@ -0,0 +1,184 @@
/*
* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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.
*
*/
/**
* \brief This module contains PicoRV32-specific code to implement
* the Contiki core clock functions.
*
* \author Ralf Schlatterbeck <rsc@runtux.com>.
*
*/
/** \addtogroup picorv32
* @{
*/
/**
* \defgroup picorv32clock PicoRV32 clock implementation
* @{
*/
/**
* \file
* This file contains PicoRV32-specific code to implement the Contiki
* core clock functions.
*
*/
/**
* These routines define the PicoRV32-specific calls declared in
* /core/sys/clock.h CLOCK_SECOND is the number of ticks per second.
* It is defined through CONF_CLOCK_SECOND in the contiki-conf.h for
* each platform.
* The usual AVR defaults are 128 or 125 ticks per second, counting a
* prescaled CPU clock using the 8 bit timer0.
*
* clock_time_t is usually declared by the platform as an unsigned 16
* bit data type, thus intervals up to 512 or 524 seconds can be
* measured with ~8 millisecond precision.
* For longer intervals the 32 bit clock_seconds() is available.
*/
#include "sys/clock.h"
#include "sys/etimer.h"
static volatile clock_time_t count;
volatile unsigned long seconds;
long sleepseconds;
/*---------------------------------------------------------------------------*/
/**
* Start the clock by enabling the timer comparison interrupts.
*/
void
clock_init(void)
{
//cli ();
//OCRSetup();
//sei ();
}
/*---------------------------------------------------------------------------*/
/**
* Return the tick counter. When 16 bit it typically wraps every 10 minutes.
* The comparison avoids the need to disable clock interrupts for an atomic
* read of the multi-byte variable.
*/
clock_time_t
clock_time(void)
{
static clock_time_t counter = 0;
return counter++;
}
/*---------------------------------------------------------------------------*/
/**
* Return seconds, default is time since startup.
* The comparison avoids the need to disable clock interrupts for an atomic
* read of the four-byte variable.
*/
unsigned long
clock_seconds(void)
{
unsigned long tmp;
do {
tmp = seconds;
} while(tmp != seconds);
return tmp;
}
/*---------------------------------------------------------------------------*/
/**
* Set seconds, e.g. to a standard epoch for an absolute date/time.
*/
void
clock_set_seconds(unsigned long sec)
{
seconds = sec;
}
/*---------------------------------------------------------------------------*/
/*
* Wait for a number of clock ticks.
*/
void
clock_wait(clock_time_t t)
{
clock_time_t endticks = clock_time() + t;
if (sizeof(clock_time_t) == 1) {
while ((signed char )(clock_time() - endticks) < 0) {;}
} else if (sizeof(clock_time_t) == 2) {
while ((signed short)(clock_time() - endticks) < 0) {;}
} else {
while ((signed long )(clock_time() - endticks) < 0) {;}
}
}
/*---------------------------------------------------------------------------*/
void
clock_delay_usec(uint16_t dt)
{
}
/*---------------------------------------------------------------------------*/
/**
* Delay up to 65535 milliseconds.
* \param howlong How many milliseconds to delay.
*
* Neither interrupts nor the watchdog timer is disabled over the delay.
* Platforms are not required to implement this call.
* \note This will break for CPUs clocked above 260 MHz.
*/
void
clock_delay_msec(uint16_t howlong)
{
#if F_CPU>=16000000
while(howlong--) clock_delay_usec(1000);
#elif F_CPU>=8000000
uint16_t i=996;
while(howlong--) {clock_delay_usec(i);i=999;}
#elif F_CPU>=4000000
uint16_t i=992;
while(howlong--) {clock_delay_usec(i);i=999;}
#elif F_CPU>=2000000
uint16_t i=989;
while(howlong--) {clock_delay_usec(i);i=999;}
#else
uint16_t i=983;
while(howlong--) {clock_delay_usec(i);i=999;}
#endif
}
/*---------------------------------------------------------------------------*/
/**
* Adjust the system current clock time.
* \param howmany How many ticks to add
*
* Typically used to add ticks after an MCU sleep
* clock_seconds will increment if necessary to reflect the tick addition.
* Leap ticks or seconds can (rarely) be introduced if the ISR is not blocked.
*/
void
clock_adjust_ticks(clock_time_t howmany)
{
}
/** @} */
/** @} */

159
cpu/pico-rv32/mtarch.c Normal file
View file

@ -0,0 +1,159 @@
/*
* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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 PicoRV32 specific implementation of multithreading architecture
*
* \author Ralf Schlatterbeck <rsc@runtux.com>
*
*/
#include <stdio.h>
#include "sys/mt.h"
/*--------------------------------------------------------------------------*/
void
mtarch_init(void)
{
}
/*--------------------------------------------------------------------------*/
void
mtarch_start(struct mtarch_thread *t,
void (*function)(void *), void *data)
{
/* Initialize stack with number sequence (used for
* measuring stack usage */
uint8_t i;
for(i = 0; i < MTARCH_STACKSIZE; ++i) {
t->stack[i] = i;
}
/*
* Push pointer to mt_exit and the thread onto our stack:
* Caveats:
* - The stack is defined as an array of bytes, but pointers are 32 bit wide
* - Function pointers are 32-bit addresses in flash ROM
*/
/* Initialize stack. This is done in reverse order ("pushing") the
* pre-allocated array */
/* mt_exit function that is to be invoked if the thread dies
* function is the thread handler. Invoked when RET is called in mtarch_exec
*/
*((uint32_t *)(t->stack + MTARCH_STACKSIZE - 4)) = (uint32_t)mt_exit;
*((uint32_t *)(t->stack + MTARCH_STACKSIZE - 8)) = (uint32_t)function;
/* FIXME: Push args to function and saved registers, check calling
* conventions
*/
/* Initialize stack pointer: Space for 2 2-byte-addresses and 32 registers,
* post-decrement POP / pre-increment PUSH scheme
* FIXME: Need to calculate correct address here
*/
t->sp = &t->stack[MTARCH_STACKSIZE - 1 - 4 - 32];
}
/*--------------------------------------------------------------------------*/
static unsigned char *sptmp;
static struct mtarch_thread *running;
static void
sw(void)
{
/* Disable interrupts while we perform the context switch */
//cli ();
/* Push 32 general purpuse registers */
/* Switch stack pointer */
sptmp = running->sp;
//running->sp = (unsigned char*)SP;
//SP = (unsigned short)sptmp;
/* Pop 32 general purpose registers */
/* Renable interrupts */
//sei ();
}
/*--------------------------------------------------------------------------*/
void
mtarch_exec(struct mtarch_thread *t)
{
running = t;
sw();
running = NULL;
}
/*--------------------------------------------------------------------------*/
void
mtarch_remove(void)
{
}
/*--------------------------------------------------------------------------*/
void
mtarch_yield(void)
{
sw();
}
/*--------------------------------------------------------------------------*/
void
mtarch_pstop(void)
{
}
/*--------------------------------------------------------------------------*/
void
mtarch_pstart(void)
{
}
/*--------------------------------------------------------------------------*/
void
mtarch_stop(struct mtarch_thread *t)
{
}
/*--------------------------------------------------------------------------*/
int
mtarch_stack_usage(struct mt_thread *t)
{
uint8_t i;
for(i = 0; i < MTARCH_STACKSIZE; ++i) {
if(t->thread.stack[i] != i) {
break;
}
}
return MTARCH_STACKSIZE - i;
}
/*--------------------------------------------------------------------------*/

56
cpu/pico-rv32/mtarch.h Normal file
View file

@ -0,0 +1,56 @@
/*
* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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
* PicoRV32 specific implementation of multithreading architecture
* \author
* Ralf Schlatterbeck <rsc@runtux.com>
*
*/
#ifndef MTARCH_H_
#define MTARCH_H_
#include "contiki-conf.h"
#ifdef MTARCH_CONF_STACKSIZE
#define MTARCH_STACKSIZE MTARCH_CONF_STACKSIZE
#else
#define MTARCH_STACKSIZE 512
#endif
struct mtarch_thread {
unsigned char stack[MTARCH_STACKSIZE];
unsigned char *sp;
};
#endif /* MTARCH_H_ */

53
cpu/pico-rv32/rtimer-arch.c Normal file
View file

@ -0,0 +1,53 @@
/*
* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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
* PicoRV32-specific rtimer code
* \author
* Ralf Schlatterbeck <rsc@runtux.com>
*/
#include <stdio.h>
#include "sys/rtimer.h"
#include "rtimer-arch.h"
void
rtimer_arch_init(void)
{
}
/*---------------------------------------------------------------------------*/
void
rtimer_arch_schedule(rtimer_clock_t t)
{
}

44
cpu/pico-rv32/rtimer-arch.h Normal file
View file

@ -0,0 +1,44 @@
/*
* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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.
*
*/
#ifndef RTIMER_ARCH_H_
#define RTIMER_ARCH_H_
#include <sys/clock.h>
// FIXME
#define RTIMER_ARCH_SECOND 23
#define rtimer_arch_now() (clock_time ())
void rtimer_arch_sleep(rtimer_clock_t howlong);
#endif /* RTIMER_ARCH_H_ */

51
cpu/pico-rv32/rv32def.h Normal file
View file

@ -0,0 +1,51 @@
/*
* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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.
*
*/
#ifndef RV32DEF_H
#define RV32DEF_H
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned long uint32_t;
typedef unsigned long long uint64_t;
typedef signed char int8_t;
typedef short int16_t;
typedef long int32_t;
typedef long long int64_t;
//void cpu_init(void);
//void *sbrk(int);
//typedef unsigned char spl_t;
//static inline void splx(spl_t s) { SREG = s; }
//static inline spl_t splhigh(void) { spl_t s = SREG; cli(); return s; }
#endif /* RV32DEF_H */

62
cpu/pico-rv32/watchdog.c Normal file
View file

@ -0,0 +1,62 @@
/*
* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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.
*
*/
/* Dummy Watchdog routines for the PicoRV32 */
#include "dev/watchdog.h"
/*---------------------------------------------------------------------------*/
void
watchdog_init(void)
{
}
/*---------------------------------------------------------------------------*/
void
watchdog_start(void)
{
}
/*---------------------------------------------------------------------------*/
void
watchdog_periodic(void)
{
}
/*---------------------------------------------------------------------------*/
void
watchdog_stop(void)
{
}
/*---------------------------------------------------------------------------*/
void
watchdog_reboot(void)
{
}
/*---------------------------------------------------------------------------*/