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-rw-r--r--etc/gps.conf44
1 files changed, 32 insertions, 12 deletions
diff --git a/etc/gps.conf b/etc/gps.conf
index 4b48558..cc66792 100644
--- a/etc/gps.conf
+++ b/etc/gps.conf
@@ -138,43 +138,63 @@ LPPE_UP_TECHNOLOGY = 0
# 0: disable
# 1: enable
AGPS_CONFIG_INJECT = 1
+
+##################################################
+# GNSS settings for automotive use cases
+# Configurations in following section are
+# specific to automotive use cases, others
+# please do not change, keep the default values
+##################################################
+
# AP Coarse Timestamp Uncertainty
##################################################
# default : 10
-# or as per clock uncertainty of product
+# AP time stamp uncertainty, until GNSS receiver
+# is able to acquire better timing information
AP_TIMESTAMP_UNCERTAINTY = 10
-#####################################
-# GNSS PPS settings
-#####################################
-#AP DR engine availability status
-# 0 : NO AP DR (default)
-# 1 : AP DR enabled
+##################################################
+# QDR engine availability status
+##################################################
+# 0 : NO QDR (default)
+# 1 : QDR enabled
+# This settings enables QDR Configuration for
+# automotive use case, if enabled then
+# DR_AP_Service needs to be enabled in izat.conf
#EXTERNAL_DR_ENABLED = 0
#####################################
-#DR_SYNC Pulse Availability
+# DR_SYNC Pulse Availability
#####################################
# 0 : DR_SYNC pulse not available (default)
# 1 : DR_SYNC pulse available
+# This configuration enables the driver to make use
+# of PPS events generated by DR_SYNC pulse
+# Standard Linux PPS driver needs to be enabled
DR_SYNC_ENABLED = 0
#####################################
-#PPS Device name
+# PPS Device name
#####################################
PPS_DEVICENAME = /dev/pps0
#####################################
-#AP Clock Accuracy
+# AP Clock Accuracy
#####################################
+# Quality of APPS processor clock (in PPM).
+# Value specified is used for calculation of
+# APPS time stamp uncertainty
AP_CLOCK_PPM = 100
#####################################
-#MAX ms difference to detect missing pulse
+# MAX ms difference to detect missing pulse
#####################################
+# Specifies time threshold in ms to validate any missing PPS pulses
MISSING_PULSE_TIME_DELTA = 900
#####################################
-#Propagation time uncertainty
+# Propagation time uncertainty
#####################################
+# This settings enables time uncertainty propagation
+# logic incase of missing PPS pulse
PROPAGATION_TIME_UNCERTAINTY = 1