aboutsummaryrefslogtreecommitdiff
path: root/apps/examples/adc/adc_main.c
diff options
context:
space:
mode:
Diffstat (limited to 'apps/examples/adc/adc_main.c')
-rw-r--r--apps/examples/adc/adc_main.c372
1 files changed, 0 insertions, 372 deletions
diff --git a/apps/examples/adc/adc_main.c b/apps/examples/adc/adc_main.c
deleted file mode 100644
index 553658fee..000000000
--- a/apps/examples/adc/adc_main.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/****************************************************************************
- * examples/adc/adc_main.c
- *
- * Copyright (C) 2011-2012 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 <sys/types.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <debug.h>
-
-#include <nuttx/analog/adc.h>
-
-#include "adc.h"
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/* Use CONFIG_EXAMPLES_ADC_NSAMPLES == 0 to mean to collect samples
- * indefinitely.
- */
-
-#ifndef CONFIG_EXAMPLES_ADC_NSAMPLES
-# define CONFIG_EXAMPLES_ADC_NSAMPLES 0
-#endif
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-/****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-static struct adc_state_s g_adcstate;
-
-/****************************************************************************
- * Public Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: adc_devpath
- ****************************************************************************/
-
-static void adc_devpath(FAR struct adc_state_s *adc, FAR const char *devpath)
-{
- /* Get rid of any old device path */
-
- if (adc->devpath)
- {
- free(adc->devpath);
- }
-
- /* Then set-up the new device path by copying the string */
-
- adc->devpath = strdup(devpath);
-}
-
-/****************************************************************************
- * Name: adc_help
- ****************************************************************************/
-
-#ifdef CONFIG_NSH_BUILTIN_APPS
-static void adc_help(FAR struct adc_state_s *adc)
-{
- message("Usage: adc [OPTIONS]\n");
- message("\nArguments are \"sticky\". For example, once the ADC device is\n");
- message("specified, that device will be re-used until it is changed.\n");
- message("\n\"sticky\" OPTIONS include:\n");
- message(" [-p devpath] selects the ADC device. "
- "Default: %s Current: %s\n",
- CONFIG_EXAMPLES_ADC_DEVPATH, g_adcstate.devpath ? g_adcstate.devpath : "NONE");
- message(" [-n count] selects the samples to collect. "
- "Default: 1 Current: %d\n", adc->count);
- message(" [-h] shows this message and exits\n");
-}
-#endif
-
-/****************************************************************************
- * Name: arg_string
- ****************************************************************************/
-
-#ifdef CONFIG_NSH_BUILTIN_APPS
-static int arg_string(FAR char **arg, FAR char **value)
-{
- FAR char *ptr = *arg;
-
- if (ptr[2] == '\0')
- {
- *value = arg[1];
- return 2;
- }
- else
- {
- *value = &ptr[2];
- return 1;
- }
-}
-#endif
-
-/****************************************************************************
- * Name: arg_decimal
- ****************************************************************************/
-
-#ifdef CONFIG_NSH_BUILTIN_APPS
-static int arg_decimal(FAR char **arg, FAR long *value)
-{
- FAR char *string;
- int ret;
-
- ret = arg_string(arg, &string);
- *value = strtol(string, NULL, 10);
- return ret;
-}
-#endif
-
-/****************************************************************************
- * Name: parse_args
- ****************************************************************************/
-
-#ifdef CONFIG_NSH_BUILTIN_APPS
-static void parse_args(FAR struct adc_state_s *adc, int argc, FAR char **argv)
-{
- FAR char *ptr;
- FAR char *str;
- long value;
- int index;
- int nargs;
-
- for (index = 1; index < argc; )
- {
- ptr = argv[index];
- if (ptr[0] != '-')
- {
- message("Invalid options format: %s\n", ptr);
- exit(0);
- }
-
- switch (ptr[1])
- {
- case 'n':
- nargs = arg_decimal(&argv[index], &value);
- if (value < 0)
- {
- message("Count must be non-negative: %ld\n", value);
- exit(1);
- }
-
- adc->count = (uint32_t)value;
- index += nargs;
- break;
-
- case 'p':
- nargs = arg_string(&argv[index], &str);
- adc_devpath(adc, str);
- index += nargs;
- break;
-
- case 'h':
- adc_help(adc);
- exit(0);
-
- default:
- message("Unsupported option: %s\n", ptr);
- adc_help(adc);
- exit(1);
- }
- }
-}
-#endif
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: adc_main
- ****************************************************************************/
-
-int adc_main(int argc, char *argv[])
-{
- struct adc_msg_s sample[CONFIG_EXAMPLES_ADC_GROUPSIZE];
- size_t readsize;
- ssize_t nbytes;
- int fd;
- int errval = 0;
- int ret;
- int i;
-
- /* Check if we have initialized */
-
- if (!g_adcstate.initialized)
- {
- /* Initialization of the ADC hardware is performed by logic external to
- * this test.
- */
-
- message("adc_main: Initializing external ADC device\n");
- ret = adc_devinit();
- if (ret != OK)
- {
- message("adc_main: adc_devinit failed: %d\n", ret);
- errval = 1;
- goto errout;
- }
-
- /* Set the default values */
-
- adc_devpath(&g_adcstate, CONFIG_EXAMPLES_ADC_DEVPATH);
-
-#if CONFIG_EXAMPLES_ADC_NSAMPLES > 0
- g_adcstate.count = CONFIG_EXAMPLES_ADC_NSAMPLES;
-#else
- g_adcstate.count = 1;
-#endif
- g_adcstate.initialized = true;
- }
-
- /* Parse the command line */
-
-#ifdef CONFIG_NSH_BUILTIN_APPS
- parse_args(&g_adcstate, argc, argv);
-#endif
-
- /* 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) || CONFIG_EXAMPLES_ADC_NSAMPLES > 0
- message("adc_main: g_adcstate.count: %d\n", g_adcstate.count);
-#endif
-
- /* Open the ADC device for reading */
-
- message("adc_main: Hardware initialized. Opening the ADC device: %s\n",
- g_adcstate.devpath);
-
- fd = open(g_adcstate.devpath, O_RDONLY);
- if (fd < 0)
- {
- message("adc_main: open %s failed: %d\n", g_adcstate.devpath, errno);
- errval = 2;
- goto errout;
- }
-
- /* Now loop the appropriate number of times, displaying the collected
- * ADC samples.
- */
-
-#if defined(CONFIG_NSH_BUILTIN_APPS)
- for (; g_adcstate.count > 0; g_adcstate.count--)
-#elif CONFIG_EXAMPLES_ADC_NSAMPLES > 0
- for (g_adcstate.count = 0; g_adcstate.count < CONFIG_EXAMPLES_ADC_NSAMPLES; g_adcstate.count++)
-#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);
-
- /* Handle unexpected return values */
-
- if (nbytes < 0)
- {
- errval = errno;
- if (errval != EINTR)
- {
- message("adc_main: read %s failed: %d\n",
- g_adcstate.devpath, errval);
- errval = 3;
- goto errout_with_dev;
- }
-
- message("adc_main: Interrupted read...\n");
- }
- else if (nbytes == 0)
- {
- message("adc_main: No data read, Ignoring\n");
- }
-
- /* Print the sample data on successful return */
-
- else
- {
- int nsamples = nbytes / sizeof(struct adc_msg_s);
- if (nsamples * sizeof(struct adc_msg_s) != nbytes)
- {
- message("adc_main: read size=%d is not a multiple of sample size=%d, Ignoring\n",
- nbytes, sizeof(struct adc_msg_s));
- }
- else
- {
- message("Sample:\n");
- for (i = 0; i < nsamples ; i++)
- {
- message("%d: channel: %d value: %d\n",
- i, sample[i].am_channel, sample[i].am_data);
- }
- }
- }
- }
-
- close(fd);
- return OK;
-
- /* Error exits */
-
-errout_with_dev:
- close(fd);
-
-errout:
- message("Terminating!\n");
- msgflush();
- return errval;
-}