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author | Gregory Nutt <gnutt@nuttx.org> | 2014-04-22 07:52:08 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2014-04-22 07:52:08 -0600 |
commit | 5ac1c9adabdb5bd299c3bedaf7e09f1971797d04 (patch) | |
tree | b138385468cded7e833068bda695ecfe5f9fbd6e /apps/examples/cpuhog | |
parent | b73c2bdabb5dc418b587d7c70a502831ece7d38e (diff) | |
download | px4-nuttx-5ac1c9adabdb5bd299c3bedaf7e09f1971797d04.tar.gz px4-nuttx-5ac1c9adabdb5bd299c3bedaf7e09f1971797d04.tar.bz2 px4-nuttx-5ac1c9adabdb5bd299c3bedaf7e09f1971797d04.zip |
examples/cpuhog and serialblaster from Bob Doiron
Diffstat (limited to 'apps/examples/cpuhog')
-rw-r--r-- | apps/examples/cpuhog/.gitignore | 11 | ||||
-rw-r--r-- | apps/examples/cpuhog/Kconfig | 13 | ||||
-rw-r--r-- | apps/examples/cpuhog/Makefile | 109 | ||||
-rw-r--r-- | apps/examples/cpuhog/cpuhog_main.c | 163 |
4 files changed, 296 insertions, 0 deletions
diff --git a/apps/examples/cpuhog/.gitignore b/apps/examples/cpuhog/.gitignore new file mode 100644 index 000000000..fa1ec7579 --- /dev/null +++ b/apps/examples/cpuhog/.gitignore @@ -0,0 +1,11 @@ +/Make.dep +/.depend +/.built +/*.asm +/*.obj +/*.rel +/*.lst +/*.sym +/*.adb +/*.lib +/*.src diff --git a/apps/examples/cpuhog/Kconfig b/apps/examples/cpuhog/Kconfig new file mode 100644 index 000000000..a74074537 --- /dev/null +++ b/apps/examples/cpuhog/Kconfig @@ -0,0 +1,13 @@ +# +# For a description of the syntax of this configuration file, +# see misc/tools/kconfig-language.txt. +# + +config EXAMPLES_CPUHOG + bool "CPU Hog" + default n + ---help--- + Enable the cpuhog example + +if EXAMPLES_CPUHOG +endif diff --git a/apps/examples/cpuhog/Makefile b/apps/examples/cpuhog/Makefile new file mode 100644 index 000000000..995380b0e --- /dev/null +++ b/apps/examples/cpuhog/Makefile @@ -0,0 +1,109 @@ +############################################################################ +# apps/examples/cpuhog/Makefile +# +# Copyright (C) 2014 Gregory Nutt. All rights reserved. +# Author: Gregory Nutt <gnutt@nuttx.org> +# +# 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 NuttX 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 OWNER 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 $(TOPDIR)/.config +-include $(TOPDIR)/Make.defs +include $(APPDIR)/Make.defs + +# do nothing loop to use up cpu time + +ASRCS = +CSRCS = cpuhog_main.c + +AOBJS = $(ASRCS:.S=$(OBJEXT)) +COBJS = $(CSRCS:.c=$(OBJEXT)) + +SRCS = $(ASRCS) $(CSRCS) +OBJS = $(AOBJS) $(COBJS) + +ifeq ($(CONFIG_WINDOWS_NATIVE),y) + BIN = ..\..\libapps$(LIBEXT) +else +ifeq ($(WINTOOL),y) + BIN = ..\\..\\libapps$(LIBEXT) +else + BIN = ../../libapps$(LIBEXT) +endif +endif + +ROOTDEPPATH = --dep-path . + +# Built-in application info + +APPNAME = cpuhog +PRIORITY = SCHED_PRIORITY_LOW +STACKSIZE = 1024 + +# Common build + +VPATH = + +all: .built +.PHONY: clean depend distclean + +$(AOBJS): %$(OBJEXT): %.S + $(call ASSEMBLE, $<, $@) + +$(COBJS): %$(OBJEXT): %.c + $(call COMPILE, $<, $@) + +.built: $(OBJS) + $(call ARCHIVE, $(BIN), $(OBJS)) + @touch .built + +ifeq ($(CONFIG_NSH_BUILTIN_APPS),y) +$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(DEPCONFIG) Makefile + $(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main) + +context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat +else +context: +endif + +.depend: Makefile $(SRCS) + @$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep + @touch $@ + +depend: .depend + +clean: + $(call DELFILE, .built) + $(call CLEAN) + +distclean: clean + $(call DELFILE, Make.dep) + $(call DELFILE, .depend) + +-include Make.dep diff --git a/apps/examples/cpuhog/cpuhog_main.c b/apps/examples/cpuhog/cpuhog_main.c new file mode 100644 index 000000000..26c456952 --- /dev/null +++ b/apps/examples/cpuhog/cpuhog_main.c @@ -0,0 +1,163 @@ +/**************************************************************************** + * examples/cpuhog/cpuhog_main.c + * + * Copyright (C) 2014 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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 NuttX 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 OWNER 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <stdio.h> +#include <unistd.h> +#include <nuttx/clock.h> +#include <nuttx/arch.h> +#include <semaphore.h> +#include <errno.h> +#include <fcntl.h> +#include <sys/stat.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#define CPUHOG_FIFO_FNAME "/dev/cpuhogfifo" + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static struct state_s +{ + volatile bool initialized; + sem_t sem; + int count; +} g_state; + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +int cpuhog_main(int argc, char *argv[]) +{ + int id = -1; + char buf[256]; + int fd = -1; + + if (!g_state.initialized) + { + sem_init(&g_state.sem, 0, 1); + mkfifo(CPUHOG_FIFO_FNAME, 0666); + g_state.count = 0; + g_state.initialized = true; + printf("cpuhog initialized\n"); + } + + while(1) + { + /* To test semaphore interaction (debugging system crashes...) */ + + while (sem_wait(&g_state.sem) != 0) + { + ASSERT(errno == EINTR); + } + + /* Burn some inside semlock */ + + up_udelay(3000); + sem_post(&g_state.sem); + + /* Unassigned */ + + if (id == -1) + { + id = g_state.count++; + printf("cpuhog %d", id); + if (id == 0) + { + printf(": consumer\n"); + fd = open(CPUHOG_FIFO_FNAME, O_RDONLY); + } + else if (id == 1) + { + printf(": producer\n"); + fd = open(CPUHOG_FIFO_FNAME, O_WRONLY); + } + else + { + printf("\n"); + } + } + + /* Consumer */ + + else if (id == 0) + { + if (read(fd, buf, sizeof(buf)) > 0) + { + printf("-"); + } + else + { + perror("fifo: "); + } + } + + /* Producer */ + + else if (id == 1) + { + if (write(fd, buf, sizeof(buf)) > 0) + { + printf("+"); + } + else + { + perror("fifo: "); + } + } + + /* Otherwise just a cpu burner */ + + else + { + /* Burn some outside semlock */ + + up_udelay(3000); + } + } + + return 0; +} |