davinci: Drop unused gnsspps
Change-Id: I5811042197ffc19dd56c3609afafa6e10acf48c8
This commit is contained in:
parent
3476ddfcaf
commit
3613fe7f16
@ -174,7 +174,6 @@ PRODUCT_PACKAGES += \
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libbatching \
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libgeofencing \
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libgnss \
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libgnsspps \
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libsensorndkbridge
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PRODUCT_COPY_FILES += \
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@ -1,36 +0,0 @@
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ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
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LOCAL_PATH := $(call my-dir)
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include $(CLEAR_VARS)
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LOCAL_MODULE := libgnsspps
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LOCAL_MODULE_PATH_32 := $(TARGET_OUT_VENDOR)/lib
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LOCAL_MODULE_PATH_64 := $(TARGET_OUT_VENDOR)/lib64
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LOCAL_MODULE_TAGS := optional
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LOCAL_SHARED_LIBRARIES := \
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libutils \
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libcutils \
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libgps.utils \
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liblog
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LOCAL_SRC_FILES += \
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gnsspps.c
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LOCAL_CFLAGS += \
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-fno-short-enums \
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-D_ANDROID_
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## Includes
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LOCAL_HEADER_LIBRARIES := \
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libgps.utils_headers \
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libloc_pla_headers
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LOCAL_CFLAGS += $(GNSS_CFLAGS)
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include $(BUILD_SHARED_LIBRARY)
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include $(CLEAR_VARS)
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LOCAL_MODULE := libgnsspps_headers
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LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
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include $(BUILD_HEADER_LIBRARY)
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endif
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@ -1,37 +0,0 @@
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AM_CFLAGS = \
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$(LOCPLA_CFLAGS) \
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$(GPSUTILS_CFLAGS) \
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-I$(WORKSPACE)/system/core/include \
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-I./
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ACLOCAL_AMFLAGS = -I m4
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libgnsspps_la_SOURCES = \
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gnsspps.c
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if USE_GLIB
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libgnsspps_la_CFLAGS = -DUSE_GLIB $(AM_CFLAGS) @GLIB_CFLAGS@
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libgnsspps_la_LDFLAGS = -lstdc++ -Wl,-z,defs -lpthread @GLIB_LIBS@ -shared -version-info 1:0:0
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libgnsspps_la_CPPFLAGS = -DUSE_GLIB $(AM_CFLAGS) $(AM_CPPFLAGS) @GLIB_CFLAGS@
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else
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libgnsspps_la_CFLAGS = $(AM_CFLAGS)
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libgnsspps_la_LDFLAGS = -Wl,-z,defs -lpthread -shared -version-info 1:0:0
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libgnsspps_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
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endif
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libgnsspps_la_LIBADD = -lstdc++ $(GPSUTILS_LIBS)
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library_include_HEADERS = \
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gnsspps.h
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#Create and Install libraries
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lib_LTLIBRARIES = libgnsspps.la
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library_includedir = $(pkgincludedir)
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pkgconfigdir = $(libdir)/pkgconfig
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pkgconfig_DATA = gnsspps.pc
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EXTRA_DIST = $(pkgconfig_DATA)
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@ -1,70 +0,0 @@
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# configure.ac -- Autoconf script for gps lbs-core
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#
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# Process this file with autoconf to produce a configure script
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# Requires autoconf tool later than 2.61
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AC_PREREQ(2.61)
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# Initialize the gps lbs-core package version 1.0.0
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AC_INIT([gnsspps],1.0.0)
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# Does not strictly follow GNU Coding standards
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AM_INIT_AUTOMAKE([foreign])
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# Disables auto rebuilding of configure, Makefile.ins
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AM_MAINTAINER_MODE
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# Verifies the --srcdir is correct by checking for the path
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AC_CONFIG_SRCDIR([Makefile.am])
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# defines some macros variable to be included by source
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AC_CONFIG_HEADERS([config.h])
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AC_CONFIG_MACRO_DIR([m4])
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# Checks for programs.
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AC_PROG_LIBTOOL
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AC_PROG_CXX
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AC_PROG_CC
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AM_PROG_CC_C_O
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AC_PROG_AWK
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AC_PROG_CPP
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AC_PROG_INSTALL
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AC_PROG_LN_S
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AC_PROG_MAKE_SET
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PKG_PROG_PKG_CONFIG
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# Checks for libraries.
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PKG_CHECK_MODULES([GPSUTILS], [gps-utils])
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AC_SUBST([GPSUTILS_CFLAGS])
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AC_SUBST([GPSUTILS_LIBS])
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AC_ARG_WITH([locpla_includes],
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AC_HELP_STRING([--with-locpla-includes=@<:@dir@:>@],
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[Specify the path to locpla-includes in loc-pla_git.bb]),
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[locpla_incdir=$withval],
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with_locpla_includes=no)
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if test "x${with_locpla_includes}" != "xno"; then
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AC_SUBST(LOCPLA_CFLAGS, "-I${locpla_incdir}")
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fi
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AC_ARG_WITH([glib],
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AC_HELP_STRING([--with-glib],
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[enable glib, building HLOS systems which use glib]))
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if (test "x${with_glib}" = "xyes"); then
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AC_DEFINE(ENABLE_USEGLIB, 1, [Define if HLOS systems uses glib])
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PKG_CHECK_MODULES(GTHREAD, gthread-2.0 >= 2.16, dummy=yes,
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AC_MSG_ERROR(GThread >= 2.16 is required))
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PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.16, dummy=yes,
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AC_MSG_ERROR(GLib >= 2.16 is required))
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GLIB_CFLAGS="$GLIB_CFLAGS $GTHREAD_CFLAGS"
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GLIB_LIBS="$GLIB_LIBS $GTHREAD_LIBS"
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AC_SUBST(GLIB_CFLAGS)
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AC_SUBST(GLIB_LIBS)
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fi
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AM_CONDITIONAL(USE_GLIB, test "x${with_glib}" = "xyes")
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AC_CONFIG_FILES([ \
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Makefile \
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gnsspps.pc
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])
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AC_OUTPUT
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@ -1,391 +0,0 @@
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/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
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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 are
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* met:
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundatoin, nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <log_util.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 <sys/types.h>
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#include <sys/stat.h>
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#include <pthread.h>
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#include <timepps.h>
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#include <linux/types.h>
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#include <stdbool.h>
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#include "loc_cfg.h"
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#include <inttypes.h>
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#include <time.h>
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#include <math.h>
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#define BILLION_NSEC (1E9)
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typedef struct timespec pps_sync_time;
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//DRsync kernel timestamp
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static struct timespec drsyncKernelTs = {0,0};
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//DRsync userspace timestamp
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static struct timespec drsyncUserTs = {0,0};
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static struct timespec prevDrsyncKernelTs = {0,0};
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//flag to stop fetching timestamp
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static int isActive = 0;
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static pps_handle handle;
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static pthread_mutex_t ts_lock;
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static int skipPPSPulseCnt = 0;
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static int gnssOutageInSec = 1;
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static loc_param_s_type gps_conf_param_table[] =
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{
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{"IGNORE_PPS_PULSE_COUNT", &skipPPSPulseCnt, NULL, 'n'},
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{"GNSS_OUTAGE_DURATION", &gnssOutageInSec, NULL, 'n'}
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};
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typedef enum {
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KERNEL_REPORTED_CLOCK_BOOTTIME = 0,
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KERNEL_REPORTED_CLOCK_REALTIME,
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KERNEL_REPORTED_CLOCK_UNKNOWN = 0xfe,
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KERNEL_REPORTED_CLOCK_MAX = 0xff
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} kernel_reported_time_e;
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/* checks the PPS source and opens it */
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int check_device(char *path, pps_handle *handle)
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{
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int ret;
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/* Try to find the source by using the supplied "path" name */
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ret = open(path, O_RDONLY);
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if (ret < 0)
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{
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LOC_LOGV("%s:%d unable to open device %s", __func__, __LINE__, path);
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return ret;
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}
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/* Open the PPS source */
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ret = pps_create(ret, handle);
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if (ret < 0)
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{
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LOC_LOGV( "%s:%d cannot create a PPS source from device %s", __func__, __LINE__, path);
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return -1;
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}
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return 0;
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}
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/* calculate the time difference between two given times in argument -
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** returns the result in timeDifference parametter*/
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static inline void calculate_time_difference(pps_sync_time time1,
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pps_sync_time time2, pps_sync_time* timeDifference)
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{
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if (time2.tv_nsec < time1.tv_nsec) {
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timeDifference->tv_sec = time2.tv_sec - 1 - time1.tv_sec;
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timeDifference->tv_nsec = BILLION_NSEC + time2.tv_nsec - time1.tv_nsec;
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} else {
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timeDifference->tv_sec = time2.tv_sec - time1.tv_sec;
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timeDifference->tv_nsec = time2.tv_nsec - time1.tv_nsec;
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}
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}
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/*add two timespec values and return the result in third resultTime parameter*/
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static inline void pps_sync_time_add(pps_sync_time time1,
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pps_sync_time time2, pps_sync_time* resultTime)
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{
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if (time2.tv_nsec + time1.tv_nsec >= BILLION_NSEC) {
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resultTime->tv_sec = time2.tv_sec + time1.tv_sec + 1;
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resultTime->tv_nsec = time2.tv_nsec + time1.tv_nsec - BILLION_NSEC;
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} else {
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resultTime->tv_sec = time2.tv_sec + time1.tv_sec;
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resultTime->tv_nsec = time2.tv_nsec + time1.tv_nsec;
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}
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}
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#define MAX_REALTIME_OFFSET_DELTA_DIFFERENCE 10
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#define MAX_PPS_KERNEL_TO_USERSPACE_LATENCY 100 /*in milli-second*/
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static inline double convertTimeToMilliSec(pps_sync_time timeToConvert)
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{
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return ((double)(timeToConvert.tv_sec * 1000) + (double)(timeToConvert.tv_nsec * 0.000001));
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}
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/*returnValue: 1 = offsetTime OK, 0 = offsetTime NOT OK*/
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static inline bool isTimeOffsetOk(pps_sync_time offsetTime)
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{
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double offsetInMillis = convertTimeToMilliSec(offsetTime);
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return (fabs(offsetInMillis) <= MAX_REALTIME_OFFSET_DELTA_DIFFERENCE)? true: false;
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}
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/*check whether kernel PPS timestamp is a CLOCK_BOOTTIME or CLOCK_REALTIME*/
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static kernel_reported_time_e get_reported_time_type(pps_sync_time userBootTs,
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pps_sync_time userRealTs,
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pps_sync_time kernelTs)
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{
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double userRealMs, userBootMs, kernelTsMs;
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kernel_reported_time_e reportedTime = KERNEL_REPORTED_CLOCK_UNKNOWN;
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userRealMs = convertTimeToMilliSec(userRealTs);
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userBootMs = convertTimeToMilliSec(userBootTs);
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kernelTsMs = convertTimeToMilliSec(kernelTs);
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if(fabs(userBootMs - kernelTsMs) <= MAX_PPS_KERNEL_TO_USERSPACE_LATENCY) {
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reportedTime = KERNEL_REPORTED_CLOCK_BOOTTIME;
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} else if (fabs(userRealMs - kernelTsMs) <= MAX_PPS_KERNEL_TO_USERSPACE_LATENCY) {
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reportedTime = KERNEL_REPORTED_CLOCK_REALTIME;
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} else {
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reportedTime = KERNEL_REPORTED_CLOCK_UNKNOWN;
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}
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LOC_LOGV("[%s] Detected PPS timestamp type (0:Boot, 1:Real, 0xfe:Unknown):0x%x",
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__func__, reportedTime);
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return reportedTime;
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}
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/*compute_real_to_boot_time - converts the kernel real time stamp to boot time reference*/
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static int compute_real_to_boot_time(pps_info ppsFetchTime)
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{
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int retVal = 0;
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/*Offset between REAL_TIME to BOOT_TIME*/
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static pps_sync_time time_offset = {0, 0};
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pps_sync_time drSyncUserRealTs, drSyncUserBootTs;
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pps_sync_time deltaRealToBootTime = {0, 0};
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pps_sync_time deltaOffsetTime = {0, 0};
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kernel_reported_time_e ppsTimeType;
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retVal = clock_gettime(CLOCK_BOOTTIME,&drSyncUserBootTs);
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if (retVal != 0) {
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LOC_LOGE("[%s]Error Reading CLOCK_BOOTTIME", __func__);
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retVal = -1;
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goto exit0;
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}
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retVal = clock_gettime(CLOCK_REALTIME,&drSyncUserRealTs);
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if (retVal != 0){
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LOC_LOGE("[%s]Error Reading CLOCK_REALTIME", __func__);
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retVal = -1;
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goto exit0;
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}
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ppsTimeType = get_reported_time_type(drSyncUserBootTs, drSyncUserRealTs, ppsFetchTime);
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if (KERNEL_REPORTED_CLOCK_BOOTTIME == ppsTimeType) {
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/*Store PPS kernel time*/
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drsyncKernelTs.tv_sec = ppsFetchTime.tv_sec;
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drsyncKernelTs.tv_nsec = ppsFetchTime.tv_nsec;
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/*Store User PPS fetch time*/
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drsyncUserTs.tv_sec = drSyncUserBootTs.tv_sec;
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drsyncUserTs.tv_nsec = drSyncUserBootTs.tv_nsec;
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LOC_LOGV("[compute_real_to_boot] PPS TimeType CLOCK_BOOTTIME -- report as is");
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retVal = 0;
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} else if (KERNEL_REPORTED_CLOCK_REALTIME == ppsTimeType) {
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/* Calculate time difference between REALTIME to BOOT_TIME*/
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calculate_time_difference(drSyncUserRealTs, drSyncUserBootTs, &deltaRealToBootTime);
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/* Calculate the time difference between stored offset and computed one now*/
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calculate_time_difference(time_offset, deltaRealToBootTime, &deltaOffsetTime);
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if ((0 == time_offset.tv_sec && 0 == time_offset.tv_nsec) ||
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(isTimeOffsetOk(deltaOffsetTime))) {
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/* if Time Offset does not change beyond threshold then
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** convert to boot time*/
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drsyncUserTs.tv_sec = drSyncUserBootTs.tv_sec;
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drsyncUserTs.tv_nsec = drSyncUserBootTs.tv_nsec;
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pps_sync_time_add(ppsFetchTime, deltaRealToBootTime, &drsyncKernelTs);
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retVal = 0;
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} else {
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/*The offset is too high, jump detected in realTime tick, either
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** wall clock changed by user of NTP, skip PPS, re-sync @ next tick
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*/
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LOC_LOGE("[%s] Jump detected in CLOCK_REALTIME - Offset %ld:%ld", __func__,
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deltaOffsetTime.tv_sec, deltaOffsetTime.tv_nsec);
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retVal = -1;
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}
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time_offset.tv_sec = deltaRealToBootTime.tv_sec;
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time_offset.tv_nsec = deltaRealToBootTime.tv_nsec;
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LOC_LOGV("[compute_real_to_boot] KernelRealTs %ld:%ld ComputedTs %ld:%ld RealTs %ld:%ld BootTs %ld:%ld Offset %ld:%ld retVal %d ",
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ppsFetchTime.tv_sec, ppsFetchTime.tv_nsec,
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drsyncKernelTs.tv_sec, drsyncKernelTs.tv_nsec, drSyncUserRealTs.tv_sec,
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drSyncUserRealTs.tv_nsec, drsyncUserTs.tv_sec, drsyncUserTs.tv_nsec,
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time_offset.tv_sec, time_offset.tv_nsec, retVal);
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} else {
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LOC_LOGV("[compute_real_to_boot] PPS TimeType Unknown -- KernelTs %ld:%ld userRealTs %ld:%ld userBootTs %ld:%ld",
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ppsFetchTime.tv_sec, ppsFetchTime.tv_nsec,
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drSyncUserRealTs.tv_sec, drSyncUserRealTs.tv_nsec,
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drsyncUserTs.tv_sec, drsyncUserTs.tv_nsec);
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retVal = -1;
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}
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exit0:
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return retVal;
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}
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/* fetches the timestamp from the PPS source */
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int read_pps(pps_handle *handle)
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{
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struct timespec timeout;
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pps_info infobuf;
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int ret;
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static bool isFirstPulseReceived = false;
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static unsigned int skipPulseCnt = 0;
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// 3sec timeout
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timeout.tv_sec = 3;
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timeout.tv_nsec = 0;
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ret = pps_fetch(*handle, PPS_TSFMT_TSPEC, &infobuf, &timeout);
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if (ret < 0 && ret !=-EINTR)
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{
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LOC_LOGV("%s:%d pps_fetch() error %d", __func__, __LINE__, ret);
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return -1;
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}
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if (!isFirstPulseReceived && (skipPPSPulseCnt > 0)) {
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skipPulseCnt = skipPPSPulseCnt;
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isFirstPulseReceived = true;
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LOC_LOGV("%s:%d first pps pulse received %ld (sec) %ld (nsec)",
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__func__, __LINE__, infobuf.tv_sec, infobuf.tv_nsec)
|
||||
}else if (isFirstPulseReceived && (skipPPSPulseCnt > 0) &&
|
||||
((infobuf.tv_sec - prevDrsyncKernelTs.tv_sec) > gnssOutageInSec)) {
|
||||
LOC_LOGV("%s:%d long RF outage detected, ignore next %d PPS Pulses",
|
||||
__func__, __LINE__, skipPPSPulseCnt)
|
||||
skipPulseCnt = skipPPSPulseCnt;
|
||||
}
|
||||
prevDrsyncKernelTs.tv_sec = infobuf.tv_sec;
|
||||
prevDrsyncKernelTs.tv_nsec = infobuf.tv_nsec;
|
||||
/* check if this dr sync pulse need to be ignored or not*/
|
||||
if (skipPulseCnt > 0) {
|
||||
LOC_LOGV("%s:%d skip pps count %d, ignoring this pps pulse %ld (sec) %ld (nsec)",
|
||||
__func__,__LINE__, skipPulseCnt, infobuf.tv_sec, infobuf.tv_nsec);
|
||||
skipPulseCnt--;
|
||||
return 0;
|
||||
}
|
||||
/* update dr syncpulse time*/
|
||||
|
||||
pthread_mutex_lock(&ts_lock);
|
||||
|
||||
ret = compute_real_to_boot_time(infobuf);
|
||||
|
||||
pthread_mutex_unlock(&ts_lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
/* infinitely calls read_pps() */
|
||||
void *thread_handle(void *input)
|
||||
{
|
||||
int ret;
|
||||
if(input != NULL)
|
||||
{
|
||||
LOC_LOGV("%s:%d Thread Input is present", __func__, __LINE__);
|
||||
}
|
||||
while(isActive)
|
||||
{
|
||||
ret = read_pps(&handle);
|
||||
|
||||
if (ret == -1 && errno != ETIMEDOUT )
|
||||
{
|
||||
LOC_LOGV("%s:%d Could not fetch PPS source", __func__, __LINE__);
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* opens the device and fetches from PPS source */
|
||||
int initPPS(char *devname)
|
||||
{
|
||||
int ret,pid;
|
||||
pthread_t thread;
|
||||
isActive = 1;
|
||||
|
||||
ret = check_device(devname, &handle);
|
||||
if (ret < 0)
|
||||
{
|
||||
LOC_LOGV("%s:%d Could not find PPS source", __func__, __LINE__);
|
||||
return 0;
|
||||
}
|
||||
UTIL_READ_CONF(LOC_PATH_GPS_CONF, gps_conf_param_table);
|
||||
pthread_mutex_init(&ts_lock,NULL);
|
||||
|
||||
pid = pthread_create(&thread,NULL,&thread_handle,NULL);
|
||||
if(pid != 0)
|
||||
{
|
||||
LOC_LOGV("%s:%d Could not create thread in InitPPS", __func__, __LINE__);
|
||||
return 0;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* stops fetching and closes the device */
|
||||
void deInitPPS()
|
||||
{
|
||||
pthread_mutex_lock(&ts_lock);
|
||||
isActive = 0;
|
||||
pthread_mutex_unlock(&ts_lock);
|
||||
|
||||
pthread_mutex_destroy(&ts_lock);
|
||||
pps_destroy(handle);
|
||||
}
|
||||
|
||||
/* retrieves DRsync kernel timestamp,DRsync userspace timestamp
|
||||
and updates current timestamp */
|
||||
/* Returns:
|
||||
* 1. @Param out DRsync kernel timestamp
|
||||
* 2. @Param out DRsync userspace timestamp
|
||||
* 3. @Param out current timestamp
|
||||
*/
|
||||
int getPPS(struct timespec *fineKernelTs ,struct timespec *currentTs,
|
||||
struct timespec *fineUserTs)
|
||||
{
|
||||
int ret;
|
||||
|
||||
pthread_mutex_lock(&ts_lock);
|
||||
fineKernelTs->tv_sec = drsyncKernelTs.tv_sec;
|
||||
fineKernelTs->tv_nsec = drsyncKernelTs.tv_nsec;
|
||||
|
||||
fineUserTs->tv_sec = drsyncUserTs.tv_sec;
|
||||
fineUserTs->tv_nsec = drsyncUserTs.tv_nsec;
|
||||
|
||||
ret = clock_gettime(CLOCK_BOOTTIME,currentTs);
|
||||
pthread_mutex_unlock(&ts_lock);
|
||||
if(ret != 0)
|
||||
{
|
||||
LOC_LOGV("%s:%d clock_gettime() error",__func__,__LINE__);
|
||||
return 0;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
@ -1,45 +0,0 @@
|
||||
/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are
|
||||
* met:
|
||||
* * Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* * 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.
|
||||
* * Neither the name of The Linux Foundatoin, 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 "AS IS" AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
|
||||
* 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 _GNSSPPS_H
|
||||
#define _GNSSPPS_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/* opens the device and fetches from PPS source */
|
||||
int initPPS(char *devname);
|
||||
/* updates the fine time stamp */
|
||||
int getPPS(struct timespec *current_ts, struct timespec *current_boottime, struct timespec *last_boottime);
|
||||
/* stops fetching and closes the device */
|
||||
void deInitPPS();
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
@ -1,10 +0,0 @@
|
||||
prefix=@prefix@
|
||||
exec_prefix=@exec_prefix@
|
||||
libdir=@libdir@
|
||||
includedir=@includedir@
|
||||
|
||||
Name: gnsspps
|
||||
Description: QTI GPS gnsspps
|
||||
Version: @VERSION
|
||||
Libs: -L${libdir} -lgnsspps
|
||||
Cflags: -I${includedir}/gnsspps
|
@ -1,106 +0,0 @@
|
||||
/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are
|
||||
* met:
|
||||
* * Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* * 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.
|
||||
* * Neither the name of The Linux Foundatoin, 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 "AS IS" AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
|
||||
* 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 <errno.h>
|
||||
#include <sys/time.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pps.h>
|
||||
|
||||
#ifndef _TIMEPPS_H
|
||||
#define _TIMEPPS_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
/* time of assert event */
|
||||
typedef struct timespec pps_info;
|
||||
/* represents pps source */
|
||||
typedef int pps_handle;
|
||||
|
||||
/* Open the PPS source */
|
||||
static __inline int pps_create(int source, pps_handle *handle)
|
||||
{
|
||||
int ret;
|
||||
struct pps_kparams dummy;
|
||||
|
||||
if (!handle)
|
||||
{
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
/* check if current device is valid pps */
|
||||
ret = ioctl(source, PPS_GETPARAMS, &dummy);
|
||||
if (ret)
|
||||
{
|
||||
errno = EOPNOTSUPP;
|
||||
return -1;
|
||||
}
|
||||
*handle = source;
|
||||
|
||||
return 0;
|
||||
}
|
||||
/* close the pps source */
|
||||
static __inline int pps_destroy(pps_handle handle)
|
||||
{
|
||||
return close(handle);
|
||||
}
|
||||
/*reads timestamp from pps device*/
|
||||
static __inline int pps_fetch(pps_handle handle, const int tsformat,
|
||||
pps_info *ppsinfobuf,
|
||||
const struct timespec *timeout)
|
||||
{
|
||||
struct pps_fdata fdata;
|
||||
int ret;
|
||||
|
||||
if (tsformat != PPS_TSFMT_TSPEC)
|
||||
{
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
if (timeout)
|
||||
{
|
||||
fdata.timeout.sec = timeout->tv_sec;
|
||||
fdata.timeout.nsec = timeout->tv_nsec;
|
||||
fdata.timeout.flags = ~PPS_TIME_INVALID;
|
||||
}
|
||||
else
|
||||
{
|
||||
fdata.timeout.flags = PPS_TIME_INVALID;
|
||||
}
|
||||
ret = ioctl(handle, PPS_FETCH, &fdata);
|
||||
|
||||
ppsinfobuf->tv_sec = fdata.info.assert_tu.sec;
|
||||
ppsinfobuf->tv_nsec = fdata.info.assert_tu.nsec;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
Loading…
Reference in New Issue
Block a user