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author | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2011-12-19 19:24:09 +0000 |
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committer | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2011-12-19 19:24:09 +0000 |
commit | add995c32e86f9de8fa8fc05172435332c25a895 (patch) | |
tree | 0191fde92a5c4dcd55a24b2aa760fa4c88713242 /apps/examples/adc | |
download | px4-firmware-add995c32e86f9de8fa8fc05172435332c25a895.tar.gz px4-firmware-add995c32e86f9de8fa8fc05172435332c25a895.tar.bz2 px4-firmware-add995c32e86f9de8fa8fc05172435332c25a895.zip |
Completes coding of the PWM module
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
Diffstat (limited to 'apps/examples/adc')
-rw-r--r-- | apps/examples/adc/Makefile | 105 | ||||
-rwxr-xr-x | apps/examples/adc/adc.h | 116 | ||||
-rw-r--r-- | apps/examples/adc/adc_main.c | 215 |
3 files changed, 436 insertions, 0 deletions
diff --git a/apps/examples/adc/Makefile b/apps/examples/adc/Makefile new file mode 100644 index 000000000..d9b2162e9 --- /dev/null +++ b/apps/examples/adc/Makefile @@ -0,0 +1,105 @@ +############################################################################ +# apps/examples/touchscreen/Makefile +# +# Copyright (C) 2011 Gregory Nutt. All rights reserved. +# Author: Gregory Nutt <spudmonkey@racsa.co.cr> +# +# 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 + +# NuttX NX Graphics Example. + +ASRCS = +CSRCS = adc_main.c + +AOBJS = $(ASRCS:.S=$(OBJEXT)) +COBJS = $(CSRCS:.c=$(OBJEXT)) + +SRCS = $(ASRCS) $(CSRCS) +OBJS = $(AOBJS) $(COBJS) + +ifeq ($(WINTOOL),y) + BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}" +else + BIN = "$(APPDIR)/libapps$(LIBEXT)" +endif + +ROOTDEPPATH = --dep-path . + +# Touchscreen built-in application info + +APPNAME = adc +PRIORITY = SCHED_PRIORITY_DEFAULT +STACKSIZE = 2048 + +# Common build + +VPATH = + +all: .built +.PHONY: context clean depend distclean + +$(AOBJS): %$(OBJEXT): %.S + $(call ASSEMBLE, $<, $@) + +$(COBJS): %$(OBJEXT): %.c + $(call COMPILE, $<, $@) + +.built: $(OBJS) + @( for obj in $(OBJS) ; do \ + $(call ARCHIVE, $(BIN), $${obj}); \ + done ; ) + @touch .built + +.context: +ifeq ($(CONFIG_NSH_BUILTIN_APPS),y) + $(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main) + @touch $@ +endif + +context: .context + +.depend: Makefile $(SRCS) + @$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep + @touch $@ + +depend: .depend + +clean: + @rm -f *.o *~ .*.swp .built + $(call CLEAN) + +distclean: clean + @rm -f Make.dep .depend + +-include Make.dep diff --git a/apps/examples/adc/adc.h b/apps/examples/adc/adc.h new file mode 100755 index 000000000..901f84940 --- /dev/null +++ b/apps/examples/adc/adc.h @@ -0,0 +1,116 @@ +/**************************************************************************** + * examples/examples/adc.h + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +#ifndef __APPS_EXAMPLES_ADC_ADC_H +#define __APPS_EXAMPLES_ADC_ADC_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +/**************************************************************************** + * Definitions + ****************************************************************************/ +/* Configuration ************************************************************/ +/* CONFIG_NSH_BUILTIN_APPS - Build the ADC test as an NSH built-in function. + * Default: Built as a standalone problem + * CONFIG_EXAMPLES_ADC_DEVPATH - The path to the ADC device. Default: /dev/adc0 + * CONFIG_EXAMPLES_ADC_NSAMPLES - If CONFIG_NSH_BUILTIN_APPS + * is defined, then the number of samples is provided on the command line + * and this value is ignored. Otherwise, this number of samples is + * collected and the program terminates. Default: Samples are collected + * indefinitely. + * CONFIG_EXAMPLES_ADC_GROUPSIZE - The number of samples to read at once. + * Default: 4 + */ + +#ifndef CONFIG_ADC +# error "ADC device support is not enabled (CONFIG_ADC)" +#endif + +#ifndef CONFIG_EXAMPLES_ADC_DEVPATH +# define CONFIG_EXAMPLES_ADC_DEVPATH "/dev/adc0" +#endif + +#ifndef CONFIG_EXAMPLES_ADC_GROUPSIZE +# define CONFIG_EXAMPLES_ADC_GROUPSIZE 4 +#endif + +/* Debug ********************************************************************/ + +#ifdef CONFIG_CPP_HAVE_VARARGS +# ifdef CONFIG_DEBUG +# define message(...) lib_rawprintf(__VA_ARGS__) +# define msgflush() +# else +# define message(...) printf(__VA_ARGS__) +# define msgflush() fflush(stdout) +# endif +#else +# ifdef CONFIG_DEBUG +# define message lib_rawprintf +# define msgflush() +# else +# define message printf +# define msgflush() fflush(stdout) +# endif +#endif + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Name: adc_devinit() + * + * Description: + * Perform architecuture-specific initialization of the ADC hardware. This + * interface must be provided by all configurations using apps/examples/adc + * + ****************************************************************************/ + +int adc_devinit(void); + +#endif /* __APPS_EXAMPLES_ADC_ADC_H */ diff --git a/apps/examples/adc/adc_main.c b/apps/examples/adc/adc_main.c new file mode 100644 index 000000000..e685f862d --- /dev/null +++ b/apps/examples/adc/adc_main.c @@ -0,0 +1,215 @@ +/**************************************************************************** + * examples/adc/adc_main.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 <sys/types.h> + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <debug.h> + +#include <nuttx/analog/adc.h> + +#include "adc.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#ifdef CONFIG_NSH_BUILTIN_APPS +# define MAIN_NAME adc_main +# define MAIN_STRING "adc_main: " +#else +# define MAIN_NAME user_start +# define MAIN_STRING "user_start: " +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: user_start/adc_main + ****************************************************************************/ + +int MAIN_NAME(int argc, char *argv[]) +{ + struct adc_msg_s sample[CONFIG_EXAMPLES_ADC_GROUPSIZE]; + size_t readsize; + ssize_t nbytes; +#if defined(CONFIG_NSH_BUILTIN_APPS) || defined(CONFIG_EXAMPLES_ADC_NSAMPLES) + long nsamples; +#endif + int fd; + int errval = 0; + int ret; + int i; + + /* If this example is configured as an NX add-on, then limit the number of + * samples that we collect before returning. Otherwise, we never return + */ + +#if defined(CONFIG_NSH_BUILTIN_APPS) + nsamples = 1; + if (argc > 1) + { + nsamples = strtol(argv[1], NULL, 10); + } + message(MAIN_STRING "nsamples: %d\n", nsamples); +#elif defined(CONFIG_EXAMPLES_ADC_NSAMPLES) + message(MAIN_STRING "nsamples: %d\n", CONFIG_EXAMPLES_ADC_NSAMPLES); +#endif + + /* Initialization of the ADC hardware is performed by logic external to + * this test. + */ + + message(MAIN_STRING "Initializing external ADC device\n"); + ret = adc_devinit(); + if (ret != OK) + { + message(MAIN_STRING "adc_devinit failed: %d\n", ret); + errval = 1; + goto errout; + } + message(MAIN_STRING "Hardware initialized. Opening the ADC device\n"); + + /* Open the ADC device for reading */ + + fd = open(CONFIG_EXAMPLES_ADC_DEVPATH, O_RDONLY); + if (fd < 0) + { + message(MAIN_STRING "open %s failed: %d\n", + CONFIG_EXAMPLES_ADC_DEVPATH, errno); + errval = 2; + goto errout_with_dev; + } + + /* Now loop the appropriate number of times, displaying the collected + * ADC samples. + */ + + message(MAIN_STRING "Entering the main loop\n"); + +#if defined(CONFIG_NSH_BUILTIN_APPS) + for (; nsamples > 0; nsamples--) +#elif defined(CONFIG_EXAMPLES_ADC_NSAMPLES) + for (nsamples = 0; nsamples < CONFIG_EXAMPLES_ADC_NSAMPLES; nsamples++) +#else + for (;;) +#endif + { + /* Flush any output before the loop entered or from the previous pass + * through the loop. + */ + + msgflush(); + + /* Read CONFIG_EXAMPLES_ADC_GROUPSIZE samples */ + + readsize = CONFIG_EXAMPLES_ADC_GROUPSIZE * sizeof(struct adc_msg_s); + nbytes = read(fd, sample, readsize); + message("Bytes read: %d\n", nbytes); + + /* Handle unexpected return values */ + + if (nbytes < 0) + { + errval = errno; + if (errval != EINTR) + { + message(MAIN_STRING "read %s failed: %d\n", + CONFIG_EXAMPLES_ADC_DEVPATH, errval); + errval = 3; + goto errout_with_dev; + } + + message(MAIN_STRING "Interrupted read...\n"); + } + else if (nbytes != readsize) + { + message(MAIN_STRING "Unexpected read size=%d, expected=%d, Ignoring\n", + nbytes, readsize); + } + + /* Print the sample data on successful return */ + + else + { + message("Sample :\n"); + for (i = 0; i < CONFIG_EXAMPLES_ADC_GROUPSIZE; i++) + { + message("%d: channel: %d value: %d\n", + i, sample[i].am_channel, sample[i].am_data); + } + } + } + +errout_with_dev: + close(fd); + +errout: + message("Terminating!\n"); + msgflush(); + return errval; +} |