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linuxptp/configs/automotive-slave.cfg

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Add example configuration for Automotive Profile. This commit adds example for configuring master and slave devices that support features from the Automotive Profile. Signed-off-by: Vedang Patel <vedang.patel@intel.com>
2018-10-04 00:41:53 +08:00
#
# Automotive Profile example configuration for slaves containing those
# attributes which differ from the defaults. See the file, default.cfg, for
# the complete list of available options.
#
[global]
#
# Options carried over from gPTP.
#
gmCapable 1
priority1 248
priority2 248
logSyncInterval -3
syncReceiptTimeout 3
neighborPropDelayThresh 800
min_neighbor_prop_delay -20000000
assume_two_step 1
path_trace_enabled 1
follow_up_info 1
transportSpecific 0x1
ptp_dst_mac 01:80:C2:00:00:0E
network_transport L2
delay_mechanism P2P
#
# Automotive Profile specific options
#
BMCA noop
slaveOnly 1
inhibit_announce 1
asCapable true
ignore_source_id 1
# Required to quickly correct Time Jumps in master
step_threshold 1
port: Add interval update mechanism. This commit adds functionality to increase the sync and pdelay request intervals once gptp synchronization has been achieved. This is useful while running Automotive Profile where the network is usually static. Here, we are assuming that the gPTP synchronization is achieved whenever the last 'n' offsets calculated using the Sync messages are below a certain threshold. Both, the number of offsets to consider and the offset threshold are configurable. In order to support the interval update, a new clock servo state CLOCK_SERVO_STABLE has been added. The clock will transition to this state whenever the above condition is satisfied. When this transition occurs, the slave will send an "interval request" signaling message asking the master to change the sync interval. It will also update the pdelay request interval locally. Four new config options have been added to provide this functionality: - servo_offset_threshold: All the offset values being considered should be below this value. - servo_num_offset_values: number of previously received offset values to consider. - operLogSyncInterval: slave will ask the master to switch to this interval for sending sync messages when the offset stabilizes. - operLogPdelayReqInterval: the slave will set this interval for pdelay request messages when the offset stabilizes. Signed-off-by: Vedang Patel <vedang.patel@intel.com>
2019-03-29 11:32:30 +08:00
operLogSyncInterval 0
operLogPdelayReqInterval 2
servo_offset_threshold 30
servo_num_offset_values 10