| /**************************************************************************** |
| * examples/examples/pwm/pwm.h |
| * |
| * 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. |
| * |
| ****************************************************************************/ |
| |
| #ifndef __APPS_EXAMPLES_PWM_PWM_H |
| #define __APPS_EXAMPLES_PWM_PWM_H |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| /**************************************************************************** |
| * Pre-processor Definitions |
| ****************************************************************************/ |
| /* Configuration ************************************************************/ |
| /* CONFIG_NSH_BUILTIN_APPS - Build the PWM test as an NSH built-in function. |
| * CONFIG_EXAMPLES_PWM_DEVPATH - The path to the PWM device. Default: /dev/pwm0 |
| * CONFIG_EXAMPLES_PWM_FREQUENCY - The initial PWM frequency. Default: 100 Hz |
| * CONFIG_EXAMPLES_PWM_DUTYPCT - The initial PWM duty as a percentage. Default: 50% |
| * CONFIG_EXAMPLES_PWM_DURATION - The initial PWM pulse train duration in seconds. |
| * Used only if the current pulse count is zero (pulse count is only supported |
| * if CONFIG_PWM_PULSECOUNT is defined). Default: 5 seconds |
| * CONFIG_EXAMPLES_PWM_PULSECOUNT - The initial PWM pulse count. This option is |
| * only available if CONFIG_PWM_PULSECOUNT is defined. Default: 0 (i.e., use |
| * the duration, not the count). |
| */ |
| |
| #ifndef CONFIG_PWM |
| # error "PWM device support is not enabled (CONFIG_PWM)" |
| #endif |
| |
| #ifndef CONFIG_EXAMPLES_PWM_DEVPATH |
| # define CONFIG_EXAMPLES_PWM_DEVPATH "/dev/pwm0" |
| #endif |
| |
| #ifndef CONFIG_EXAMPLES_PWM_FREQUENCY |
| # define CONFIG_EXAMPLES_PWM_FREQUENCY 100 |
| #endif |
| |
| #ifndef CONFIG_EXAMPLES_PWM_DUTYPCT |
| # define CONFIG_EXAMPLES_PWM_DUTYPCT 50 |
| #endif |
| |
| #ifndef CONFIG_EXAMPLES_PWM_DURATION |
| # define CONFIG_EXAMPLES_PWM_DURATION 5 |
| #endif |
| |
| #ifndef CONFIG_EXAMPLES_PWM_PULSECOUNT |
| # define CONFIG_EXAMPLES_PWM_PULSECOUNT 0 |
| #endif |
| |
| /**************************************************************************** |
| * Public Types |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Public Data |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Public Function Prototypes |
| ****************************************************************************/ |
| |
| #endif /* __APPS_EXAMPLES_PWM_PWM_H */ |