Add a tiny system application to read the current temperature
This commit is contained in:
Gregory Nutt
parent
63566455d8
commit
40d2de6b83
@ -75,6 +75,10 @@ menu "Sysinfo"
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source "$APPSDIR/system/sysinfo/Kconfig"
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endmenu
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menu "Temperature"
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source "$APPSDIR/system/lm75/Kconfig"
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endmenu
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menu "VI Work-Alike Editor"
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source "$APPSDIR/system/vi/Kconfig"
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endmenu
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@ -126,6 +126,10 @@ ifeq ($(CONFIG_SYSTEM_CLE),y)
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CONFIGURED_APPS += system/cle
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endif
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ifeq ($(CONFIG_SYSTEM_LM75),y)
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CONFIGURED_APPS += system/lm75
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endif
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ifeq ($(CONFIG_SYSTEM_VI),y)
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CONFIGURED_APPS += system/vi
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endif
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@ -38,8 +38,8 @@
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# Sub-directories containing system tasks/libraries
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SUBDIRS = cdcacm cle composite cu flash_eraseall free i2c hex2bin inifile
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SUBDIRS += install mdio nxplayer poweroff ramtest ramtron readline sdcard
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SUBDIRS += stackmonitor sudoku sysinfo usbmonitor usbmsc vi zmodem
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SUBDIRS += install lm75 mdio nxplayer poweroff ramtest ramtron readline
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SUBDIRS += sdcard stackmonitor sudoku sysinfo usbmonitor usbmsc vi zmodem
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# Create the list of installed runtime modules (INSTALLED_DIRS)
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11
system/lm75/.gitignore
vendored
Normal file
11
system/lm75/.gitignore
vendored
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@ -0,0 +1,11 @@
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/Make.dep
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/.depend
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/.built
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/*.asm
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/*.rel
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/*.lst
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/*.sym
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/*.adb
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/*.lib
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/*.src
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/*.obj
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41
system/lm75/Kconfig
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41
system/lm75/Kconfig
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@ -0,0 +1,41 @@
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#
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# For a description of the syntax of this configuration file,
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# see misc/tools/kconfig-language.txt.
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#
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config SYSTEM_LM75
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bool "Temperature"
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default n
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depends on I2C_LM75
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---help---
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Enable support for the NSH temp command. This command will read the
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current temperature from an LM-75 (or compatible) temperature sensor
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and show the temperature on stdout.
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if SYSTEM_LM75
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config SYSTEM_LM75_DEVNAME
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string "Temperature sensing device"
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default "/dev/temp"
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choice
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prompt "Temperature units"
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default SYSTEM_LM75_FAHRENHEIT
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config SYSTEM_LM75_FAHRENHEIT
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bool "Fahrenheit"
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config SYSTEM_LM75_CENTIGRADE
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bool "Centigrade"
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endchoice
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config SYSTEM_LM75_STACKSIZE
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int "Stack size (bytes)"
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default 1024
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config SYSTEM_LM75_PRIORITY
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int "Command priority"
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default 100
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endif
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149
system/lm75/Makefile
Normal file
149
system/lm75/Makefile
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@ -0,0 +1,149 @@
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############################################################################
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# apps/system/lm75/Makefile
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#
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# Copyright (C) 2015 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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# TODO, this makefile should run make under the app dirs, instead of
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# sourcing the Make.defs!
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-include $(TOPDIR)/.config
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-include $(TOPDIR)/Make.defs
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include $(APPDIR)/Make.defs
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ifeq ($(WINTOOL),y)
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INCDIROPT = -w
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endif
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# LM-75 Temperature Sensor Application
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CONFIG_SYSTEM_LM75_PRIORITY ?= 100
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CONFIG_SYSTEM_LM75_STACKSIZE ?= 1024
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APPNAME = temp
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PRIORITY = $(CONFIG_SYSTEM_LM75_PRIORITY)
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STACKSIZE = $(CONFIG_SYSTEM_LM75_STACKSIZE)
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ASRCS =
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CSRCS =
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MAINSRC = lm75.c
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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COBJS = $(CSRCS:.c=$(OBJEXT))
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MAINOBJ = $(MAINSRC:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS) $(MAINSRC)
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OBJS = $(AOBJS) $(COBJS)
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ifneq ($(CONFIG_BUILD_KERNEL),y)
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OBJS += $(MAINOBJ)
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endif
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ifeq ($(CONFIG_WINDOWS_NATIVE),y)
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BIN = ..\..\libapps$(LIBEXT)
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else
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ifeq ($(WINTOOL),y)
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BIN = ..\\..\\libapps$(LIBEXT)
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else
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BIN = ../../libapps$(LIBEXT)
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endif
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endif
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ifeq ($(WINTOOL),y)
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INSTALL_DIR = "${shell cygpath -w $(BIN_DIR)}"
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else
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INSTALL_DIR = $(BIN_DIR)
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endif
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CONFIG_XYZ_PROGNAME ?= lm75$(EXEEXT)
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PROGNAME = $(CONFIG_XYZ_PROGNAME)
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ROOTDEPPATH = --dep-path .
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# Common build
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VPATH =
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all: .built
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.PHONY: context depend clean distclean
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$(AOBJS): %$(OBJEXT): %.S
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$(call ASSEMBLE, $<, $@)
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$(COBJS) $(MAINOBJ): %$(OBJEXT): %.c
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$(call COMPILE, $<, $@)
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.built: $(OBJS)
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$(call ARCHIVE, $(BIN), $(OBJS))
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$(Q) touch .built
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ifeq ($(CONFIG_BUILD_KERNEL),y)
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$(BIN_DIR)$(DELIM)$(PROGNAME): $(OBJS) $(MAINOBJ)
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@echo "LD: $(PROGNAME)"
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$(Q) $(LD) $(LDELFFLAGS) $(LDLIBPATH) -o $(INSTALL_DIR)$(DELIM)$(PROGNAME) $(ARCHCRT0OBJ) $(MAINOBJ) $(LDLIBS)
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$(Q) $(NM) -u $(INSTALL_DIR)$(DELIM)$(PROGNAME)
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install: $(BIN_DIR)$(DELIM)$(PROGNAME)
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else
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install:
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endif
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# Register application
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ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
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$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(DEPCONFIG) Makefile
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$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),lm75_main)
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context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
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else
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context:
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endif
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# Create dependencies
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.depend: Makefile $(SRCS)
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$(Q) $(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
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$(Q) touch $@
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depend: .depend
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clean:
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$(call DELFILE, .built)
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$(call CLEAN)
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distclean: clean
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$(call DELFILE, Make.dep)
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$(call DELFILE, .depend)
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-include Make.dep
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156
system/lm75/lm75.c
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156
system/lm75/lm75.c
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@ -0,0 +1,156 @@
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/****************************************************************************
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* apps/system/lm75/lm75.c
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*
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* Copyright (C) 2015 Gregory Nutt. All rights reserved.
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* Authors: 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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/****************************************************************************
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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 <fcntl.h>
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#include <errno.h>
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#include <fixedmath.h>
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#include <nuttx/sensors/lm75.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef CONFIG_SYSTEM_LM75_DEVNAME
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# warning CONFIG_SYSTEM_LM75_DEVNAME is not defined
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# define CONFIG_SYSTEM_LM75_DEVNAME"/dev/temp"
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#endif
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#if !defined(CONFIG_SYSTEM_LM75_FAHRENHEIT) && !defined(CONFIG_SYSTEM_LM75_CENTIGRADE)
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# warning one of CONFIG_SYSTEM_LM75_FAHRENHEIT or CONFIG_SYSTEM_LM75_CENTIGRADE must be defined
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# defeind CONFIG_SYSTEM_LM75_FAHRENHEIT 1
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#endif
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#if defined(CONFIG_SYSTEM_LM75_FAHRENHEIT) && defined(CONFIG_SYSTEM_LM75_CENTIGRADE)
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# warning both of CONFIG_SYSTEM_LM75_FAHRENHEIT and CONFIG_SYSTEM_LM75_CENTIGRADE defined
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# undef CONFIG_SYSTEM_LM75_CENTIGRADE
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#ifdef CONFIG_BUILD_KERNEL
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int main(int argc, FAR char *argv[])
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#else
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int lm75_main(int argc, char *argv[])
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#endif
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{
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#ifdef CONFIG_LIBC_FLOATINGPOINT
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double temp;
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#endif
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b16_t temp16;
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ssize_t nbytes;
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int fd;
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int ret;
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/* Open the temperature sensor device */
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fd = open(CONFIG_SYSTEM_LM75_DEVNAME, O_RDONLY);
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if (fd < 0)
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{
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fprintf(stderr, "ERROR: Failed to open %s: %d\n",
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CONFIG_SYSTEM_LM75_DEVNAME, errno);
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return EXIT_FAILURE;
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}
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#ifdef CONFIG_SYSTEM_LM75_FAHRENHEIT
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/* Select Fahrenheit scaling */
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ret = ioctl(fd, SNIOC_FAHRENHEIT, 0);
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if (ret < 0)
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{
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fprintf(stderr, "ERROR: ioctl(SNIOC_FAHRENHEIT) failed: %d\n",
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errno);
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return EXIT_FAILURE;
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}
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#else
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/* Select Fahrenheit scaling */
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ret = ioctl(fd, SNIOC_CENTIGRADE, 0);
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if (ret < 0)
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{
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fprintf(stderr, "ERROR: ioctl(SNIOC_CENTIGRADE) failed: %d\n",
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errno);
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return EXIT_FAILURE;
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}
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#endif
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/* Read the current temperature as a fixed precision number */
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nbytes = read(fd, &temp16, sizeof(b16_t));
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close(fd);
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if (nbytes < 0)
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{
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fprintf(stderr, "ERROR: read(%d) failed: %d\n",
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sizeof(b16_t), errno);
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return EXIT_FAILURE;
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}
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if (nbytes != sizeof(b16_t))
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{
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fprintf(stderr, "ERROR: Unexpected read size: %Ld vs %d\n",
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(long)nbytes, sizeof(b16_t));
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return EXIT_FAILURE;
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}
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#ifdef CONFIG_LIBC_FLOATINGPOINT
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temp = (double)temp16 / 65536.0
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#ifdef CONFIG_SYSTEM_LM75_FAHRENHEIT
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printf("%3.2f degrees Fahrenheit\n", temp);
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#else
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printf("%3.2f degrees Centigrade\n", temp);
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#endif
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#else
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#ifdef CONFIG_SYSTEM_LM75_FAHRENHEIT
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printf("0x%04x.%04x degrees Fahrenheit\n", temp16 >> 16, temp16 & 0xffff);
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#else
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printf("0x%04x.%04x degrees Centigrade\n", temp16 >> 16, temp16 & 0xffff);
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#endif
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#endif
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return EXIT_SUCCESS;
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}
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