Hi,
1. I'm working on AM263x EVM with SDK 8.2, and followed the instructions in the document to practice timesync example.
But I didn't get the prospective result, it seems not follow the IEEE 1588v2 PTP timesync flow and the target always repeat the packets get from host.
2. After print timestamp few times, we got some error messages and the target stop sending packets
Can you help to clarify these questions, thanks!
Regards,
Josh
Hi Prasad,
Thanks for your quick reply.
Here is my HW environment
And I generate PTP packet using ptp4l tool in ubuntu.
joshhsiao@joshhsiao-Ubuntu:~$ sudo ptp4l -P -2 -S -f /etc/linuxptp/ptp4l.conf -i enp0s3 -m -q -p -l 7 /dev/ptp0
My ptp4l configuration file list below:
joshhsiao@joshhsiao-Ubuntu:/media/Shared_Folder$ cat /etc/linuxptp/ptp4l.conf
[global]
#
# Default Data Set
#
twoStepFlag 1
slaveOnly 0
priority1 128
priority2 128
domainNumber 0
clockClass 248
clockAccuracy 0xFE
offsetScaledLogVariance 0xFFFF
free_running 0
freq_est_interval 1
dscp_event 0
dscp_general 0
#
# Port Data Set
#
logAnnounceInterval 1
logSyncInterval 0
logMinDelayReqInterval 0
logMinPdelayReqInterval 0
announceReceiptTimeout 3
syncReceiptTimeout 0
delayAsymmetry 0
fault_reset_interval 4
neighborPropDelayThresh 20000000
#
# Run time options
#
assume_two_step 0
logging_level 6
path_trace_enabled 0
follow_up_info 0
hybrid_e2e 0
tx_timestamp_timeout 1
use_syslog 1
verbose 0
summary_interval 0
kernel_leap 1
check_fup_sync 0
#
# Servo Options
#
pi_proportional_const 0.0
pi_integral_const 0.0
pi_proportional_scale 0.0
pi_proportional_exponent -0.3
pi_proportional_norm_max 0.7
pi_integral_scale 0.0
pi_integral_exponent 0.4
pi_integral_norm_max 0.3
step_threshold 0.0
first_step_threshold 0.00002
max_frequency 900000000
clock_servo pi
sanity_freq_limit 200000000
ntpshm_segment 0
#
# Transport options
#
transportSpecific 0x0
#ptp_dst_mac 01:1B:19:00:00:00
ptp_dst_mac 01:80:C2:00:00:0E
p2p_dst_mac 01:80:C2:00:00:0E
udp_ttl 1
udp6_scope 0x0E
uds_address /var/run/ptp4l
#
# Default interface options
#
network_transport UDPv4
delay_mechanism E2E
time_stamping hardware
tsproc_mode filter
delay_filter moving_median
delay_filter_length 10
egressLatency 0
ingressLatency 0
boundary_clock_jbod 0
#
# Clock description
#
productDescription ;;
revisionData ;;
manufacturerIdentity 00:00:00
userDescription ;
timeSource 0xA0
This is the default config file and I only modified the MAC address.
I also tried the config file that only contain below settings:
[global]
ptp_dst_mac 01:80:C2:00:00:0E
p2p_dst_mac 01:80:C2:00:00:0E
But the result is the same.
Thanks for your help!
Regards,
Josh
