You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
125 lines
4.7 KiB
125 lines
4.7 KiB
/**************************************************************************** |
|
* examples/examples/adc/adc.h |
|
* |
|
* Copyright (C) 2011 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. |
|
* |
|
****************************************************************************/ |
|
|
|
#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 default 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(...) syslog(__VA_ARGS__) |
|
# define msgflush() |
|
# else |
|
# define message(...) printf(__VA_ARGS__) |
|
# define msgflush() fflush(stdout) |
|
# endif |
|
#else |
|
# ifdef CONFIG_DEBUG |
|
# define message syslog |
|
# define msgflush() |
|
# else |
|
# define message printf |
|
# define msgflush() fflush(stdout) |
|
# endif |
|
#endif |
|
|
|
/**************************************************************************** |
|
* Public Types |
|
****************************************************************************/ |
|
|
|
struct adc_state_s |
|
{ |
|
bool initialized; |
|
FAR char *devpath; |
|
#if defined(CONFIG_NSH_BUILTIN_APPS) || defined(CONFIG_EXAMPLES_ADC_NSAMPLES) |
|
int count; |
|
#endif |
|
}; |
|
|
|
/**************************************************************************** |
|
* 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 */
|
|
|