forked from Archive/PX4-Autopilot
Add a test for PWM drivers
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4202 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
parent
c0424dae99
commit
b7edb56d6f
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@ -146,3 +146,5 @@
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built for performance evaluation.
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* apps/examples/adc: Add a very simple test to drive and test an ADC
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driver.
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* apps/examples/pwm: Add an NSH PWM command to drive and test a PWM
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driver.
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@ -39,12 +39,12 @@
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SUBDIRS = adc buttons dhcpd ftpc hello helloxx hidkbd igmp lcdrw mm mount \
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nettest nsh null nx nxffs nxflat nxhello nximage nxlines \
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nxtext ostest pashello pipe poll rgmp romfs sendmail serloop \
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nxtext ostest pashello pipe poll pwm rgmp romfs sendmail serloop \
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thttpd tiff touchscreen udp uip usbserial usbstorage usbterm wget wlan
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# Sub-directories that might need context setup
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CNTXTDIRS =
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CNTXTDIRS = pwm
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ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
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CNTXTDIRS += adc
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@ -678,6 +678,22 @@ examples/poll
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CONFIGURED_APPS += uiplib
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examples/pwm
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^^^^^^^^^^^^
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A test of a PWM device driver. It simply enables a pulsed output for
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a specified frequency and duty for a specified period of time. This
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example can ONLY be built as an NSH built-in function.
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CONFIG_NSH_BUILTIN_APPS - Build the PWM test as an NSH built-in function.
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Default: Not built! The example can only be used as an NSH built-in
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application
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CONFIG_EXAMPLES_PWM_DEVPATH - The path to the PWM device. Default: /dev/pwm0
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CONFIG_EXAMPLES_PWM_FREQUENCY - The initial PWM frequency. Default: 100 Hz
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CONFIG_EXAMPLES_PWM_DUTYPCT - The initial PWM duty as a percentage. Default: 50%
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CONFIG_EXAMPLES_PWM_DURATION - The initial PWM pulse train duration in sectonds.
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as a percentage. Default: 5 seconds
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examples/rgmp
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^^^^^^^^^^^^^
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@ -1,8 +1,8 @@
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############################################################################
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# apps/examples/touchscreen/Makefile
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# apps/examples/adc/Makefile
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#
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# Copyright (C) 2011 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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@ -1,8 +1,8 @@
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/****************************************************************************
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* examples/examples/adc.h
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* examples/examples/adc/adc.h
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -132,10 +132,10 @@ int MAIN_NAME(int argc, char *argv[])
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errval = 1;
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goto errout;
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}
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message(MAIN_STRING "Hardware initialized. Opening the ADC device\n");
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/* Open the ADC device for reading */
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message(MAIN_STRING "Hardware initialized. Opening the ADC device\n");
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fd = open(CONFIG_EXAMPLES_ADC_DEVPATH, O_RDONLY);
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if (fd < 0)
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{
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@ -0,0 +1,103 @@
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############################################################################
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# apps/examples/pwm/Makefile
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#
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# Copyright (C) 2011 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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-include $(TOPDIR)/.config
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-include $(TOPDIR)/Make.defs
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include $(APPDIR)/Make.defs
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# NuttX NX Graphics Example.
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ASRCS =
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CSRCS = pwm_main.c
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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COBJS = $(CSRCS:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS)
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OBJS = $(AOBJS) $(COBJS)
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ifeq ($(WINTOOL),y)
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BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}"
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else
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BIN = "$(APPDIR)/libapps$(LIBEXT)"
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endif
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ROOTDEPPATH = --dep-path .
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# Touchscreen built-in application info
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APPNAME = pwm
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PRIORITY = SCHED_PRIORITY_DEFAULT
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STACKSIZE = 2048
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# Common build
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VPATH =
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all: .built
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.PHONY: context clean depend distclean
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$(AOBJS): %$(OBJEXT): %.S
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$(call ASSEMBLE, $<, $@)
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$(COBJS): %$(OBJEXT): %.c
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$(call COMPILE, $<, $@)
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.built: $(OBJS)
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@( for obj in $(OBJS) ; do \
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$(call ARCHIVE, $(BIN), $${obj}); \
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done ; )
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@touch .built
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.context:
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$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
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@touch $@
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context: .context
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.depend: Makefile $(SRCS)
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@$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
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@touch $@
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depend: .depend
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clean:
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@rm -f *.o *~ .*.swp .built
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$(call CLEAN)
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distclean: clean
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@rm -f Make.dep .depend
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-include Make.dep
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@ -0,0 +1,126 @@
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/****************************************************************************
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* examples/examples/pwm.h
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __APPS_EXAMPLES_PWM_PWM_H
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#define __APPS_EXAMPLES_PWM_PWM_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* CONFIG_NSH_BUILTIN_APPS - Build the PWM test as an NSH built-in function.
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* Default: Not built! The example can only be used as an NSH built-in
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* application
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* CONFIG_EXAMPLES_PWM_DEVPATH - The path to the PWM device. Default: /dev/pwm0
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* CONFIG_EXAMPLES_PWM_FREQUENCY - The initial PWM frequency. Default: 100 Hz
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* CONFIG_EXAMPLES_PWM_DUTYPCT - The initial PWM duty as a percentage. Default: 50%
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* CONFIG_EXAMPLES_PWM_DURATION - The initial PWM pulse train duration in sectonds.
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* as a percentage. Default: 5 seconds
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*/
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#ifndef CONFIG_PWM
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# error "PWM device support is not enabled (CONFIG_PWM)"
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#endif
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#ifndef CONFIG_NSH_BUILTIN_APPS
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# warning "The PWM example only works as an NSH built-in application (CONFIG_NSH_BUILTIN_APPS)"
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#endif
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#ifndef CONFIG_EXAMPLES_PWM_DEVPATH
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# define CONFIG_EXAMPLES_PWM_DEVPATH "/dev/pwm0"
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#endif
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#ifndef CONFIG_EXAMPLES_PWM_FREQUENCY
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# define CONFIG_EXAMPLES_PWM_FREQUENCY 100
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#endif
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#ifndef CONFIG_EXAMPLES_PWM_DUTYPCT
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# define CONFIG_EXAMPLES_PWM_DUTYPCT 50
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#endif
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#ifndef CONFIG_EXAMPLES_PWM_DURATION
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# define CONFIG_EXAMPLES_PWM_DURATION 5
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#endif
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/* Debug ********************************************************************/
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#ifdef CONFIG_CPP_HAVE_VARARGS
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# ifdef CONFIG_DEBUG
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# define message(...) lib_rawprintf(__VA_ARGS__)
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# define msgflush()
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# else
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# define message(...) printf(__VA_ARGS__)
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# define msgflush() fflush(stdout)
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# endif
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#else
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# ifdef CONFIG_DEBUG
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# define message lib_rawprintf
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# define msgflush()
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# else
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# define message printf
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# define msgflush() fflush(stdout)
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# endif
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: pwm_devinit()
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*
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* Description:
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* Perform architecuture-specific initialization of the PWM hardware. This
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* interface must be provided by all configurations using apps/examples/pwm
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*
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****************************************************************************/
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int pwm_devinit(void);
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#endif /* __APPS_EXAMPLES_PWM_PWM_H */
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@ -0,0 +1,308 @@
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/****************************************************************************
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* examples/pwm/pwm_main.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
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* are met:
|
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*
|
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* 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
|
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* distribution.
|
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* 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.
|
||||
*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/pwm.h>
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#include "pwm.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct pwm_state_s
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{
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bool initialized;
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uint8_t duty;
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uint32_t freq;
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int duration;
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct pwm_state_s g_pwmstate;
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pwm_help
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****************************************************************************/
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static void pwm_help(FAR struct pwm_state_s *pwm)
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{
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message("Usage: pwm [OPTIONS]\n");
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message("\nArguments are \"sticky\". For example, once the PWM frequency is\n");
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message("specified, that frequency will be re-used until it is changed.\n");
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message("\n\"sticky\" OPTIONS include:\n");
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message(" [-f addr] selects the pulse frequency. "
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"Default: %d Hz Current: %d Hz\n",
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CONFIG_EXAMPLES_PWM_FREQUENCY, pwm->freq);
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message(" [-d duty] selcts the pulse duty as a percentage. "
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"Default: %d %% Current: %d %%\n",
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CONFIG_EXAMPLES_PWM_DUTYPCT, pwm->duty);
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message(" [-t duration] is the duration of the pulse train in seconds. "
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"Default: %d Current: %d\n",
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CONFIG_EXAMPLES_PWM_DURATION, pwm->duration);
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message(" [-t] shows this message and extis\n");
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}
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/****************************************************************************
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* Name: arg_string
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****************************************************************************/
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int arg_string(FAR char **arg, FAR char **value)
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{
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FAR char *ptr = *arg;
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if (ptr[2] == '\0')
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{
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*value = arg[1];
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return 2;
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}
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else
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{
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*value = &ptr[2];
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return 1;
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}
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}
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/****************************************************************************
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* Name: arg_decimal
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****************************************************************************/
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int arg_decimal(FAR char **arg, FAR long *value)
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{
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FAR char *string;
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int ret;
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ret = arg_string(arg, &string);
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*value = strtol(string, NULL, 10);
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return ret;
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}
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/****************************************************************************
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* Name: parse_args
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||||
****************************************************************************/
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void parse_args(FAR struct pwm_state_s *pwm, int argc, FAR char **argv)
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||||
{
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FAR char *ptr;
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long value;
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int index;
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int nargs;
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for (index = 1; index < argc; )
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{
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ptr = argv[index];
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if (ptr[0] != '-')
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{
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message("Invalid options format: %s\n", ptr);
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exit(0);
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}
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switch (ptr[1])
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{
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case 'f':
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nargs = arg_decimal(&argv[index], &value);
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if (value < 1)
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{
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message("Frequency out of range: %ld\n", value);
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exit(1);
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}
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pwm->freq = (uint32_t)value;
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index += nargs;
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break;
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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;
|
||||
|
||||
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: user_start/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;
|
||||
g_pwmstate.initialized = true;
|
||||
}
|
||||
|
||||
/* Parse the command line */
|
||||
|
||||
parse_args(&g_pwmstate, argc, argv);
|
||||
|
||||
/* 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(CONFIG_EXAMPLES_PWM_DEVPATH, O_RDONLY);
|
||||
if (fd < 0)
|
||||
{
|
||||
message("pwm_main: open %s failed: %d\n",
|
||||
CONFIG_EXAMPLES_PWM_DEVPATH, errno);
|
||||
goto errout;
|
||||
}
|
||||
|
||||
/* Configure the characteristics of the pulse train */
|
||||
|
||||
info.frequency = g_pwmstate.freq;
|
||||
info.duty = (info.duty < 16) / 100;
|
||||
|
||||
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 */
|
||||
|
||||
ret = ioctl(fd, PWMIOC_START, 0);
|
||||
if (ret < 0)
|
||||
{
|
||||
message("pwm_main: ioctl(PWMIOC_START) failed: %d\n", errno);
|
||||
goto errout_with_dev;
|
||||
}
|
||||
|
||||
/* Wait for the specified duration */
|
||||
|
||||
sleep(g_pwmstate.duration);
|
||||
|
||||
/* Then stop the pulse train */
|
||||
|
||||
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;
|
||||
}
|
||||
|
|
@ -2281,5 +2281,7 @@
|
|||
that this latter bugfix also fixes some STM32 USB performance problems.
|
||||
* configs/hymini-stm32v: A configuration for the HY-Mini STM32v board contributed
|
||||
by Laurent Latil. Theses changes also include support for the STM32F103VCT6.
|
||||
* arch/configs/stm3240g-eval/src/up_pwm.c: Add hooks needed to use the new
|
||||
apps/examples/pwm test of the STM32 PWM driver.
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -8,7 +8,7 @@
|
|||
<tr align="center" bgcolor="#e4e4e4">
|
||||
<td>
|
||||
<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
|
||||
<p>Last Updated: December 6, 2011</p>
|
||||
<p>Last Updated: December 19, 2011</p>
|
||||
</td>
|
||||
</tr>
|
||||
</table>
|
||||
|
|
@ -463,7 +463,7 @@
|
|||
<td>
|
||||
<p>
|
||||
<li>
|
||||
Network, USB (host), USB (device), serial, CAN, ADC, DAC driver architectures.
|
||||
Network, USB (host), USB (device), serial, CAN, ADC, DAC, and PWM driver architectures.
|
||||
</li>
|
||||
</p>
|
||||
</tr>
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@
|
|||
<h1><big><font color="#3c34ec">
|
||||
<i>NuttX RTOS Porting Guide</i>
|
||||
</font></big></h1>
|
||||
<p>Last Updated: December 14, 2011</p>
|
||||
<p>Last Updated: December 19, 2011</p>
|
||||
</td>
|
||||
</tr>
|
||||
</table>
|
||||
|
|
@ -126,7 +126,8 @@
|
|||
<a href="#sdiodrivers">6.3.8 SDIO Device Drivers</a><br>
|
||||
<a href="#usbhostdrivers">6.3.9 USB Host-Side Drivers</a><br>
|
||||
<a href="#usbdevdrivers">6.3.10 USB Device-Side Drivers</a><br>
|
||||
<a href="#analogdrivers">6.3.11 Analog (ADC/DAC) Drivers</a>
|
||||
<a href="#analogdrivers">6.3.11 Analog (ADC/DAC) Drivers</a><br>
|
||||
<a href="#pwmdrivers">6.3.12 PWM Drivers</a>
|
||||
</ul>
|
||||
<a href="#pwrmgmt">6.4 Power Management</a>
|
||||
<ul>
|
||||
|
|
@ -3120,9 +3121,21 @@ extern void up_ledoff(int led);
|
|||
</ul>
|
||||
|
||||
<h3><a name="analogdrivers">6.3.11 Analog (ADC/DAC) Drivers</a></h3>
|
||||
<p>
|
||||
The NuttX PWM driver is split into two parts:
|
||||
</p>
|
||||
<ol>
|
||||
<li>
|
||||
An "upper half", generic driver that provides the comman PWM interface to application level code, and
|
||||
</li>
|
||||
<li>
|
||||
A "lower half", platform-specific driver that implements the low-level timer controls to implement the PWM functionality.
|
||||
</li>
|
||||
</ol>
|
||||
<ul>
|
||||
<li>
|
||||
General header files for the NuttX analog reside in <code>include/nuttx/analog/</code>.
|
||||
General header files for the NuttX analog drivers reside in <code>include/nuttx/analog/</code>.
|
||||
These header files includes both the application level interface to the analog driver as well as the interface between the "upper half" and "lower half" drivers.
|
||||
</li>
|
||||
<li>
|
||||
Common analog logic and share-able analog drivers reside in the <code>drivers/analog/</code>.
|
||||
|
|
@ -3182,6 +3195,41 @@ extern void up_ledoff(int led);
|
|||
</li>
|
||||
</ul>
|
||||
|
||||
<h3><a name="pwmdrivers">6.3.12 PWM Drivers</a></h3>
|
||||
<p>
|
||||
For the purposes of this driver, a PWM device is any device that generates periodic output pulses of controlled frequency and pulse width.
|
||||
Such a device might be used, for example, to perform pulse-width modulated output or frequency/pulse-count modulated output
|
||||
(such as might be needed to control a stepper motor).
|
||||
</p>
|
||||
<p>
|
||||
The NuttX PWM driver is split into two parts:
|
||||
</p>
|
||||
<ol>
|
||||
<li>
|
||||
An "upper half", generic driver that provides the comman PWM interface to application level code, and
|
||||
</li>
|
||||
<li>
|
||||
A "lower half", platform-specific driver that implements the low-level timer controls to implement the PWM functionality.
|
||||
</li>
|
||||
</ol>
|
||||
|
||||
<ul>
|
||||
<li>
|
||||
The header file for the NuttX PWM driver reside at <code>include/nuttx/pwm.h</code>.
|
||||
This header file includes both the application level interface to the PWM driver as well as the interface between the "upper half" and "lower half" drivers.
|
||||
The PWM module uses a standard character driver framework.
|
||||
However, since the PWM driver is a devices control interface and not a data transfer interface,
|
||||
the majority of the functionality available to the application is implemented in driver ioctl calls.
|
||||
</li>
|
||||
<li>
|
||||
The generic, "upper half" PWM driver resides at <code>drivers/pwm.c</code>.
|
||||
</li>
|
||||
<li>
|
||||
Platform-specific PWM drivers reside in <code>arch/</code><i><architecture></i><code>/src/</code><i><chip></i> directory for the specific processor <i><architecture></i> and for the specific <i><chip></i> analog peripheral devices.
|
||||
</li>
|
||||
</ul>
|
||||
|
||||
|
||||
<h2><a name="pwrmgmt">6.4 Power Management</a></h2>
|
||||
|
||||
<h3><a name="pmoverview">6.4.1 Overview</a></h3>
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@
|
|||
* arch/arm/src/stm32/stm32_internal.h
|
||||
*
|
||||
* Copyright (C) 2009-2011 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
* 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
|
||||
|
|
|
|||
|
|
@ -343,6 +343,8 @@ static int pwm_setup(FAR struct pwm_lowerhalf_s *dev)
|
|||
{
|
||||
FAR struct stm32_pwmtimer_s *priv = (FAR struct stm32_pwmtimer_s *)dev;
|
||||
|
||||
pwmvdbg("TIM%d pincfg: %08x\n", priv->timid, priv->pincfg);
|
||||
|
||||
/* Configure the PWM output pin, but do not start the timer yet */
|
||||
|
||||
stm32_configgpio(priv->pincfg);
|
||||
|
|
@ -370,6 +372,8 @@ static int pwm_shutdown(FAR struct pwm_lowerhalf_s *dev)
|
|||
FAR struct stm32_pwmtimer_s *priv = (FAR struct stm32_pwmtimer_s *)dev;
|
||||
uint32_t pincfg;
|
||||
|
||||
pwmvdbg("TIM%d pincfg: %08x\n", priv->timid, priv->pincfg);
|
||||
|
||||
/* Make sure that the output has been stopped */
|
||||
|
||||
pwm_stop(dev);
|
||||
|
|
@ -430,6 +434,9 @@ static int pwm_start(FAR struct pwm_lowerhalf_s *dev, FAR const struct pwm_info_
|
|||
uint16_t ocmode1;
|
||||
uint16_t ocmode2;
|
||||
|
||||
pwmvdbg("TIM%d channel: %d frequency: %d duty: %08x\n",
|
||||
priv->timid, priv->channel, info->frequency, info->duty);
|
||||
|
||||
/* Caculate optimal values for the timer prescaler and for the timer reload
|
||||
* register. If' frequency' is the desired frequency, then
|
||||
*
|
||||
|
|
@ -599,6 +606,7 @@ static int pwm_start(FAR struct pwm_lowerhalf_s *dev, FAR const struct pwm_info_
|
|||
break;
|
||||
|
||||
default:
|
||||
pwmdbg("No such channel: %d\n", priv->channel);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
|
|
@ -681,6 +689,10 @@ static int pwm_start(FAR struct pwm_lowerhalf_s *dev, FAR const struct pwm_info_
|
|||
|
||||
cr1 |= GTIM_CR1_CEN;
|
||||
pwm_putreg(priv, STM32_GTIM_CR1_OFFSET, ccmr2);
|
||||
|
||||
pwmvdbg("CR1: %04x CR2:%04x CCER: %08x CCMR1: %08x CCMR2: %08x\n",
|
||||
cr1, cr2, ccer, ccmr1, ccmr2);
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
|
|
@ -706,6 +718,8 @@ static int pwm_stop(FAR struct pwm_lowerhalf_s *dev)
|
|||
uint32_t regaddr;
|
||||
uint32_t regval;
|
||||
|
||||
pwmvdbg("TIM%d\n", priv->timid);
|
||||
|
||||
switch (priv->timid)
|
||||
{
|
||||
#ifdef CONFIG_STM32_TIM1_PWM
|
||||
|
|
@ -792,11 +806,13 @@ static int pwm_stop(FAR struct pwm_lowerhalf_s *dev)
|
|||
|
||||
regval &= ~resetbit;
|
||||
putreg32(regval, regaddr);
|
||||
|
||||
pwmvdbg("regaddr: %08x resetbit: %08x\n", regaddr, resetbit);
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name:
|
||||
* Name: pwm_ioctl
|
||||
*
|
||||
* Description:
|
||||
* Lower-half logic may support platform-specific ioctl commands
|
||||
|
|
@ -813,8 +829,13 @@ static int pwm_stop(FAR struct pwm_lowerhalf_s *dev)
|
|||
|
||||
static int pwm_ioctl(FAR struct pwm_lowerhalf_s *dev, int cmd, unsigned long arg)
|
||||
{
|
||||
#ifdef CONFIG_DEBUG_PWM
|
||||
FAR struct stm32_pwmtimer_s *priv = (FAR struct stm32_pwmtimer_s *)dev;
|
||||
|
||||
/* There are no platform-specific ioctl commands */
|
||||
|
||||
pwmvdbg("TIM%d\n", priv->timid);
|
||||
#endif
|
||||
return -ENOTTY;
|
||||
}
|
||||
|
||||
|
|
@ -843,6 +864,8 @@ FAR struct pwm_lowerhalf_s *stm32_pwminitialize(int timer)
|
|||
{
|
||||
FAR struct stm32_pwmtimer_s *lower;
|
||||
|
||||
pwmvdbg("TIM%d\n", timer);
|
||||
|
||||
switch (timer)
|
||||
{
|
||||
#ifdef CONFIG_STM32_TIM1_PWM
|
||||
|
|
@ -906,6 +929,7 @@ FAR struct pwm_lowerhalf_s *stm32_pwminitialize(int timer)
|
|||
break;
|
||||
#endif
|
||||
default:
|
||||
pwmdbg("No such timer configured\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -33,8 +33,8 @@
|
|||
*
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __ARCH_ARM_SRC_STM32_STM32_TIM_H
|
||||
#define __ARCH_ARM_SRC_STM32_STM32_TIM_H
|
||||
#ifndef __ARCH_ARM_SRC_STM32_STM32_PWM_H
|
||||
#define __ARCH_ARM_SRC_STM32_STM32_PWM_H
|
||||
|
||||
/* The STM32 does not have dedicated PWM hardware. Rather, pulsed output control
|
||||
* is a capabilitiy of the STM32 timers. The logic in this file implements the
|
||||
|
|
@ -303,7 +303,7 @@
|
|||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_STM32_TIM14_PWM)
|
||||
#ifdef CONFIG_STM32_TIM14_PWM
|
||||
# if !defined(CONFIG_STM32_TIM14_CHANNEL)
|
||||
# error "CONFIG_STM32_TIM14_CHANNEL must be provided"
|
||||
# elif CONFIG_STM32_TIM14_CHANNEL == 1
|
||||
|
|
@ -367,4 +367,4 @@ EXTERN FAR struct pwm_lowerhalf_s *stm32_pwminitialize(int timer);
|
|||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* CONFIG_STM32_TIMx_PWM */
|
||||
#endif /* __ARCH_ARM_SRC_STM32_STM32_TIM_H */
|
||||
#endif /* __ARCH_ARM_SRC_STM32_STM32_PWM_H */
|
||||
|
|
|
|||
|
|
@ -263,6 +263,19 @@
|
|||
#define GPIO_ETH_RMII_TXD0 GPIO_ETH_RMII_TXD0_2
|
||||
#define GPIO_ETH_RMII_TXD1 GPIO_ETH_RMII_TXD1_2
|
||||
|
||||
/* PWM
|
||||
*
|
||||
* The STM3240G-Eval has no real on-board PWM devices, but the board can be configured to output
|
||||
* a pulse train using TIM4 CH2. This pin is used by FSMC is connect to CN5 just for this
|
||||
* purpose:
|
||||
*
|
||||
* PD13 FSMC_A18 / MC_TIM4_CH2 pin 33 (EnB)
|
||||
*
|
||||
* FSMC must be disabled in this case!
|
||||
*/
|
||||
|
||||
#define GPIO_TIM4_CH2 GPIO_TIM4_CH2_1
|
||||
|
||||
/************************************************************************************
|
||||
* Public Data
|
||||
************************************************************************************/
|
||||
|
|
|
|||
|
|
@ -50,4 +50,8 @@ CONFIGURED_APPS += netutils/webclient
|
|||
CONFIGURED_APPS += netutils/tftpc
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_PWM),y)
|
||||
CONFIGURED_APPS += examples/pwm
|
||||
endif
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -302,6 +302,18 @@ CONFIG_STM32_PHYSR_FULLDUPLEX=0x0004
|
|||
CONFIG_STM32_ETH_PTP=n
|
||||
CONFIG_STM32_ETHMAC_REGDEBUG=n
|
||||
|
||||
#
|
||||
# PWM configuration
|
||||
#
|
||||
# The STM3240G-Eval has no real on-board PWM devices, but the board can be configured to output
|
||||
# a pulse train using TIM4 CH2. This pin is used by FSMC is connect to CN5 just for this
|
||||
# purpose.
|
||||
#
|
||||
CONFIG_PWM=n
|
||||
CONFIG_STM32_TIM4=y
|
||||
CONFIG_STM32_TIM4_PWM=y
|
||||
CONFIG_STM32_TIM4_CHANNEL=2
|
||||
|
||||
#
|
||||
# General build options
|
||||
#
|
||||
|
|
@ -1113,7 +1125,7 @@ CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
|
|||
# CONFIG_NSH_FATNSECTORS - FAT FS number of sectors
|
||||
# CONFIG_NSH_FATMOUNTPT - FAT FS mountpoint
|
||||
#
|
||||
CONFIG_NSH_BUILTIN_APPS=n
|
||||
CONFIG_NSH_BUILTIN_APPS=y
|
||||
CONFIG_NSH_FILEIOSIZE=512
|
||||
CONFIG_NSH_STRERROR=n
|
||||
CONFIG_NSH_LINELEN=64
|
||||
|
|
|
|||
|
|
@ -46,6 +46,10 @@ ifeq ($(CONFIG_ADC),y)
|
|||
CSRCS += up_adc.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_PWM),y)
|
||||
CSRCS += up_pwm.c
|
||||
endif
|
||||
|
||||
COBJS = $(CSRCS:.c=$(OBJEXT))
|
||||
|
||||
SRCS = $(ASRCS) $(CSRCS)
|
||||
|
|
|
|||
|
|
@ -84,6 +84,20 @@
|
|||
#define GPIO_BTN_TAMPER (GPIO_INPUT|GPIO_FLOAT|GPIO_EXTI|GPIO_PORTC|GPIO_PIN13)
|
||||
#define GPIO_BTN_USER (GPIO_INPUT|GPIO_FLOAT|GPIO_EXTI|GPIO_PORTG|GPIO_PIN15)
|
||||
|
||||
/* PWM
|
||||
*
|
||||
* The STM3240G-Eval has no real on-board PWM devices, but the board can be configured to output
|
||||
* a pulse train using TIM4 CH2. This pin is used by FSMC is connect to CN5 just for this
|
||||
* purpose:
|
||||
*
|
||||
* PD13 FSMC_A18 / MC_TIM4_CH2 pin 33 (EnB)
|
||||
*
|
||||
* FSMC must be disabled in this case!
|
||||
*/
|
||||
|
||||
#define STM3240G_EVAL_PWMTIMER 4
|
||||
#define STM3240G_EVAL_PWMCHANNEL 2
|
||||
|
||||
/****************************************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************************************/
|
||||
|
|
|
|||
|
|
@ -81,12 +81,11 @@
|
|||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: stm32_boardinitialize
|
||||
* Name: adc_devinit
|
||||
*
|
||||
* Description:
|
||||
* All STM32 architectures must provide the following entry point. This entry point
|
||||
* is called early in the intitialization -- after all memory has been configured
|
||||
* and mapped but before any devices have been initialized.
|
||||
* All STM32 architectures must provide the following interface to work with
|
||||
* examples/adc.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,128 @@
|
|||
/************************************************************************************
|
||||
* configs/stm3240g-eval/src/up_pwm.c
|
||||
* arch/arm/src/board/up_pwm.c
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/pwm.h>
|
||||
#include <arch/board/board.h>
|
||||
|
||||
#include "chip.h"
|
||||
#include "up_arch.h"
|
||||
#include "stm32_pwm.h"
|
||||
#include "stm3240g-internal.h"
|
||||
|
||||
/************************************************************************************
|
||||
* Definitions
|
||||
************************************************************************************/
|
||||
/* Configuration *******************************************************************/
|
||||
/* PWM
|
||||
*
|
||||
* The STM3240G-Eval has no real on-board PWM devices, but the board can be configured to output
|
||||
* a pulse train using TIM4 CH2. This pin is used by FSMC is connect to CN5 just for this
|
||||
* purpose:
|
||||
*
|
||||
* PD13 FSMC_A18 / MC_TIM4_CH2 pin 33 (EnB)
|
||||
*
|
||||
* FSMC must be disabled in this case!
|
||||
*/
|
||||
|
||||
#define HAVE_PWM 1
|
||||
|
||||
#ifndef CONFIG_PWM
|
||||
# undef HAVE_PWM
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_STM32_TIM4
|
||||
# undef HAVE_PWM
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_STM32_TIM4_PWM
|
||||
# undef HAVE_PWM
|
||||
#endif
|
||||
|
||||
#if CONFIG_STM32_TIM4_CHANNEL != STM3240G_EVAL_PWMCHANNEL
|
||||
# undef HAVE_PWM
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_PWM
|
||||
|
||||
/************************************************************************************
|
||||
* Private Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: pwm_devinit
|
||||
*
|
||||
* Description:
|
||||
* All STM32 architectures must provide the following interface to work with
|
||||
* examples/pwm.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
void pwm_devinit(void)
|
||||
{
|
||||
struct pwm_lowerhalf_s *pwm;
|
||||
int ret;
|
||||
|
||||
/* Call stm32_pwminitialize() to get an instance of the PWM interface */
|
||||
|
||||
pwm = stm32_pwminitialize(STM3240G_EVAL_PWMTIMER);
|
||||
if (!pwm)
|
||||
{
|
||||
dbg("Failed to get the STM32 PWM lower half\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* Register the PWM driver at "/dev/pwm0" */
|
||||
|
||||
ret = pwm_register("/dev/pwm0", pwm);
|
||||
if (ret < 0)
|
||||
{
|
||||
adbg("pwm_register failed: %d\n", ret);
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* HAVE_PWM */
|
||||
|
|
@ -36,17 +36,17 @@
|
|||
#ifndef __INCLUDE_NUTTX_PWM_H
|
||||
#define __INCLUDE_NUTTX_PWM_H
|
||||
|
||||
/* For the purposes of this driver, a PWM device is any devices and generates
|
||||
* periodic outputs of controlled frequency and pulse width. Such is device
|
||||
* might be use, for example, to perform pulse-width modulated output or
|
||||
/* For the purposes of this driver, a PWM device is any device that generates
|
||||
* periodic output pulses s of controlled frequency and pulse width. Such a
|
||||
* device might be used, for example, to perform pulse-width modulated output or
|
||||
* frequency/pulse-count modulated output (such as might be needed to control
|
||||
* a stepper motor.
|
||||
* a stepper motor).
|
||||
*
|
||||
* The PWM driver is split into two parts:
|
||||
*
|
||||
* 1) An "upper half", generic driver that provides the comman PWM interface
|
||||
* to application level code, and
|
||||
* 2) An "lower half" platform-specific driver that implements the low-level
|
||||
* 2) A "lower half", platform-specific driver that implements the low-level
|
||||
* timer controls to implement the PWM functionality.
|
||||
*/
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue