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Add a framework for an ADC test

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4180 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-12-14 23:37:38 +00:00
parent 24fea8daaa
commit f31ebb053b
5 changed files with 451 additions and 1 deletions
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5
examples/Makefile
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@ -37,7 +37,7 @@
# Sub-directories
SUBDIRS = buttons dhcpd ftpc hello helloxx hidkbd igmp lcdrw mm mount \
SUBDIRS = adc buttons dhcpd ftpc hello helloxx hidkbd igmp lcdrw mm mount \
nettest nsh null nx nxffs nxflat nxhello nximage nxlines \
nxtext ostest pashello pipe poll rgmp romfs sendmail serloop \
thttpd tiff touchscreen udp uip usbserial usbstorage usbterm wget wlan
@ -46,6 +46,9 @@ SUBDIRS = buttons dhcpd ftpc hello helloxx hidkbd igmp lcdrw mm mount \
CNTXTDIRS =
ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
CNTXTDIRS += adc
endif
ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
CNTXTDIRS += dhcpd
endif

17
examples/README.txt
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@ -30,6 +30,23 @@ examples
the specific example. See the following for examples that
support this option).
examples/adc
^^^^^^^^^^^^
A mindlessly simple test of an ADC devices. It simply reads from the
ADC device and dumps the data to the console forever.
- 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_SAMPLESIZE - The number of bytes to read in one sample.
Default: 8
examples/buttons
^^^^^^^^^^^^^^^^

105
examples/adc/Makefile Normal file
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@ -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

116
examples/adc/adc.h Executable file
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@ -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_SAMPLESIZE - The number of bytes to read in one sample.
* Default: 8
*/
#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_SAMPLESIZE
# define CONFIG_EXAMPLES_ADC_SAMPLESIZE 8
#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
*
****************************************************************************/
void adc_devinit(void);
#endif /* __APPS_EXAMPLES_ADC_ADC_H */

209
examples/adc/adc_main.c Normal file
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@ -0,0 +1,209 @@
/****************************************************************************
* 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[])
{
uintt_t sample[CONFIG_EXAMPLES_ADC_SAMPLESIZE];
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;
}
/* 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.
*/
#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 one sample */
nbytes = read(fd, sample,CONFIG_EXAMPLES_ADC_SAMPLESIZE ));
ivdbg("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 != CONFIG_EXAMPLES_ADC_SAMPLESIZE)
{
message(MAIN_STRING "Unexpected read size=%d, expected=%d, Ignoring\n",
nbytes, CONFIG_EXAMPLES_ADC_SAMPLESIZE);
}
/* Print the sample data on successful return */
else
{
message("Sample :\n");
for (i = 0; i < CONFIG_EXAMPLES_ADC_SAMPLESIZE; i++)
{
message("%d: %02x\n", i, sample[i]);
}
}
}
errout_with_dev:
close(fd);
errout_with_dev:
errout:
message("Terminating!\n");
msgflush();
return errval;
}