diff options
Diffstat (limited to 'apps/examples/pwm')
| -rw-r--r-- | apps/examples/pwm/Kconfig | 48 | ||||
| -rw-r--r-- | apps/examples/pwm/Makefile | 109 | ||||
| -rw-r--r-- | apps/examples/pwm/pwm.h | 134 | ||||
| -rw-r--r-- | apps/examples/pwm/pwm_main.c | 395 |
4 files changed, 0 insertions, 686 deletions
diff --git a/apps/examples/pwm/Kconfig b/apps/examples/pwm/Kconfig deleted file mode 100644 index 78edd2178..000000000 --- a/apps/examples/pwm/Kconfig +++ /dev/null @@ -1,48 +0,0 @@ -# -# For a description of the syntax of this configuration file, -# see misc/tools/kconfig-language.txt. -# - -config EXAMPLES_PWM - bool "Pulse width modulation (PWM) example" - default n - depends on PWM && NSH_BUILTIN_APPS - ---help--- - Enable the Pulse width modulation (PWM) example - -if EXAMPLES_PWM - -config EXAMPLES_PWM_DEVPATH - string "PWM device path" - default "/dev/pwm0" - ---help--- - The path to the PWM device. Default: /dev/pwm0 - -config EXAMPLES_PWM_FREQUENCY - int "Default PWM freququency" - default 100 - ---help--- - The default PWM frequency. Default: 100 Hz - -config EXAMPLES_PWM_DUTYPCT - int "Default PWM duty percentage" - default 50 - ---help--- - The default PWM duty as a percentage. Default: 50% - -config EXAMPLES_PWM_DURATION - int "Default PWM duration" - default 5 if !EXAMPLES_PWM_PULSECOUNT - ---help--- - The default PWM pulse train duration in seconds. Used only if the current - pulse count is zero (pulse countis only supported if CONFIG_PWM_PULSECOUNT - is defined). Default: 5 seconds - -config EXAMPLES_PWM_PULSECOUNT - int "Default pulse count" - default 0 - ---help--- - The initial PWM pulse count. This option is only available if CONFIG_PWM_PULSECOUNT - is nonzero. Default: 0 (i.e., use the duration, not the count). - -endif diff --git a/apps/examples/pwm/Makefile b/apps/examples/pwm/Makefile deleted file mode 100644 index ece901a99..000000000 --- a/apps/examples/pwm/Makefile +++ /dev/null @@ -1,109 +0,0 @@ -############################################################################ -# apps/examples/pwm/Makefile -# -# 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. -# -############################################################################ - --include $(TOPDIR)/.config --include $(TOPDIR)/Make.defs -include $(APPDIR)/Make.defs - -# PWM Example. - -ASRCS = -CSRCS = pwm_main.c - -AOBJS = $(ASRCS:.S=$(OBJEXT)) -COBJS = $(CSRCS:.c=$(OBJEXT)) - -SRCS = $(ASRCS) $(CSRCS) -OBJS = $(AOBJS) $(COBJS) - -ifeq ($(CONFIG_WINDOWS_NATIVE),y) - BIN = ..\..\libapps$(LIBEXT) -else -ifeq ($(WINTOOL),y) - BIN = ..\\..\\libapps$(LIBEXT) -else - BIN = ../../libapps$(LIBEXT) -endif -endif - -ROOTDEPPATH = --dep-path . - -# PWM built-in application info - -APPNAME = pwm -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) - $(call ARCHIVE, $(BIN), $(OBJS)) - @touch .built - -ifeq ($(CONFIG_NSH_BUILTIN_APPS),y) -$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(DEPCONFIG) Makefile - $(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main) - -context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat -else -context: -endif - -.depend: Makefile $(SRCS) - @$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep - @touch $@ - -depend: .depend - -clean: - $(call DELFILE, .built) - $(call CLEAN) - -distclean: clean - $(call DELFILE, Make.dep) - $(call DELFILE, .depend) - --include Make.dep diff --git a/apps/examples/pwm/pwm.h b/apps/examples/pwm/pwm.h deleted file mode 100644 index a6132ca8b..000000000 --- a/apps/examples/pwm/pwm.h +++ /dev/null @@ -1,134 +0,0 @@ -/**************************************************************************** - * 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> - -/**************************************************************************** - * Definitions - ****************************************************************************/ -/* Configuration ************************************************************/ -/* CONFIG_NSH_BUILTIN_APPS - Build the PWM test as an NSH built-in function. - * Default: Not built! The example can only be used as an NSH built-in - * application - * 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_NSH_BUILTIN_APPS -# warning "The PWM example only works as an NSH built-in application (CONFIG_NSH_BUILTIN_APPS)" -#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_COUNT -# define CONFIG_EXAMPLES_PWM_COUNT 0 -#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 - ****************************************************************************/ - -/**************************************************************************** - * Public Variables - ****************************************************************************/ - -/**************************************************************************** - * Public Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Name: pwm_devinit() - * - * Description: - * Perform architecuture-specific initialization of the PWM hardware. This - * interface must be provided by all configurations using apps/examples/pwm - * - ****************************************************************************/ - -int pwm_devinit(void); - -#endif /* __APPS_EXAMPLES_PWM_PWM_H */ diff --git a/apps/examples/pwm/pwm_main.c b/apps/examples/pwm/pwm_main.c deleted file mode 100644 index a46c10f55..000000000 --- a/apps/examples/pwm/pwm_main.c +++ /dev/null @@ -1,395 +0,0 @@ -/**************************************************************************** - * examples/pwm/pwm_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 <sys/ioctl.h> - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> -#include <errno.h> -#include <debug.h> -#include <string.h> - -#include <nuttx/pwm.h> - -#include "pwm.h" - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -struct pwm_state_s -{ - bool initialized; - FAR char *devpath; - uint8_t duty; - uint32_t freq; -#ifdef CONFIG_PWM_PULSECOUNT - uint32_t count; -#endif - int duration; -}; - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -static struct pwm_state_s g_pwmstate; - -/**************************************************************************** - * Public Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: pwm_devpath - ****************************************************************************/ - -static void pwm_devpath(FAR struct pwm_state_s *pwm, FAR const char *devpath) -{ - /* Get rid of any old device path */ - - if (pwm->devpath) - { - free(pwm->devpath); - } - - /* Then set-up the new device path by copying the string */ - - pwm->devpath = strdup(devpath); -} - -/**************************************************************************** - * Name: pwm_help - ****************************************************************************/ - -static void pwm_help(FAR struct pwm_state_s *pwm) -{ - message("Usage: pwm [OPTIONS]\n"); - message("\nArguments are \"sticky\". For example, once the PWM frequency is\n"); - message("specified, that frequency will be re-used until it is changed.\n"); - message("\n\"sticky\" OPTIONS include:\n"); - message(" [-p devpath] selects the PWM device. " - "Default: %s Current: %s\n", - CONFIG_EXAMPLES_PWM_DEVPATH, pwm->devpath ? pwm->devpath : "NONE"); - message(" [-f addr] selects the pulse frequency. " - "Default: %d Hz Current: %d Hz\n", - CONFIG_EXAMPLES_PWM_FREQUENCY, pwm->freq); - message(" [-d duty] selcts the pulse duty as a percentage. " - "Default: %d %% Current: %d %%\n", - CONFIG_EXAMPLES_PWM_DUTYPCT, pwm->duty); -#ifdef CONFIG_PWM_PULSECOUNT - message(" [-n count] selects the pulse count. " - "Default: %d Current: %d\n", - CONFIG_EXAMPLES_PWM_COUNT, pwm->count); -#endif - message(" [-t duration] is the duration of the pulse train in seconds. " - "Default: %d Current: %d\n", - CONFIG_EXAMPLES_PWM_DURATION, pwm->duration); - message(" [-h] shows this message and exits\n"); -} - -/**************************************************************************** - * Name: arg_string - ****************************************************************************/ - -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; - } -} - -/**************************************************************************** - * Name: arg_decimal - ****************************************************************************/ - -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; -} - -/**************************************************************************** - * Name: parse_args - ****************************************************************************/ - -static void parse_args(FAR struct pwm_state_s *pwm, 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 'f': - nargs = arg_decimal(&argv[index], &value); - if (value < 1) - { - message("Frequency out of range: %ld\n", value); - exit(1); - } - - pwm->freq = (uint32_t)value; - index += nargs; - break; - - case 'd': - nargs = arg_decimal(&argv[index], &value); - if (value < 1 || value > 99) - { - message("Duty out of range: %ld\n", value); - exit(1); - } - - pwm->duty = (uint8_t)value; - index += nargs; - break; - -#ifdef CONFIG_PWM_PULSECOUNT - case 'n': - nargs = arg_decimal(&argv[index], &value); - if (value < 0) - { - message("Count must be non-negative: %ld\n", value); - exit(1); - } - - pwm->count = (uint32_t)value; - index += nargs; - break; - -#endif - case 'p': - nargs = arg_string(&argv[index], &str); - pwm_devpath(pwm, str); - index += nargs; - break; - - case 't': - nargs = arg_decimal(&argv[index], &value); - if (value < 1 || value > INT_MAX) - { - message("Duration out of range: %ld\n", value); - exit(1); - } - - pwm->duration = (int)value; - index += nargs; - break; - - case 'h': - pwm_help(pwm); - exit(0); - - default: - message("Unsupported option: %s\n", ptr); - pwm_help(pwm); - exit(1); - } - } -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: pwm_main - ****************************************************************************/ - -int pwm_main(int argc, char *argv[]) -{ - struct pwm_info_s info; - int fd; - int ret; - - /* Initialize the state data */ - - if (!g_pwmstate.initialized) - { - g_pwmstate.duty = CONFIG_EXAMPLES_PWM_DUTYPCT; - g_pwmstate.freq = CONFIG_EXAMPLES_PWM_FREQUENCY; - g_pwmstate.duration = CONFIG_EXAMPLES_PWM_DURATION; -#ifdef CONFIG_PWM_PULSECOUNT - g_pwmstate.count = CONFIG_EXAMPLES_PWM_COUNT; -#endif - g_pwmstate.initialized = true; - } - - /* Parse the command line */ - - parse_args(&g_pwmstate, argc, argv); - - /* Has a device been assigned? */ - - if (!g_pwmstate.devpath) - { - /* No.. use the default device */ - - pwm_devpath(&g_pwmstate, CONFIG_EXAMPLES_PWM_DEVPATH); - } - - /* Initialization of the PWM hardware is performed by logic external to - * this test. - */ - - ret = pwm_devinit(); - if (ret != OK) - { - message("pwm_main: pwm_devinit failed: %d\n", ret); - goto errout; - } - - /* Open the PWM device for reading */ - - fd = open(g_pwmstate.devpath, O_RDONLY); - if (fd < 0) - { - message("pwm_main: open %s failed: %d\n", g_pwmstate.devpath, errno); - goto errout; - } - - /* Configure the characteristics of the pulse train */ - - info.frequency = g_pwmstate.freq; - info.duty = ((uint32_t)g_pwmstate.duty << 16) / 100; -#ifdef CONFIG_PWM_PULSECOUNT - info.count = g_pwmstate.count; - - message("pwm_main: starting output with frequency: %d duty: %08x count: %d\n", - info.frequency, info.duty, info.count); - -#else - message("pwm_main: starting output with frequency: %d duty: %08x\n", - info.frequency, info.duty); - -#endif - - ret = ioctl(fd, PWMIOC_SETCHARACTERISTICS, (unsigned long)((uintptr_t)&info)); - if (ret < 0) - { - message("pwm_main: ioctl(PWMIOC_SETCHARACTERISTICS) failed: %d\n", errno); - goto errout_with_dev; - } - - /* Then start the pulse train. Since the driver was opened in blocking - * mode, this call will block if the count value is greater than zero. - */ - - ret = ioctl(fd, PWMIOC_START, 0); - if (ret < 0) - { - message("pwm_main: ioctl(PWMIOC_START) failed: %d\n", errno); - goto errout_with_dev; - } - - /* It a non-zero count was not specified, then wait for the selected - * duration, then stop the PWM output. - */ - -#ifdef CONFIG_PWM_PULSECOUNT - if (info.count == 0) -#endif - { - /* Wait for the specified duration */ - - sleep(g_pwmstate.duration); - - /* Then stop the pulse train */ - - message("pwm_main: stopping output\n", info.frequency, info.duty); - - ret = ioctl(fd, PWMIOC_STOP, 0); - if (ret < 0) - { - message("pwm_main: ioctl(PWMIOC_STOP) failed: %d\n", errno); - goto errout_with_dev; - } - } - - close(fd); - msgflush(); - return OK; - -errout_with_dev: - close(fd); -errout: - msgflush(); - return ERROR; -} |