HL6528 - Kpattern problem

Hi,

i’m using an HL6528 2.8V
When connecting as a tcp client to a server, it happens that sometimes the kpattern is not recognized by the HL6528. the escape char is sent to the server as a data…i can see it in the log of the server
I try to send it three times with a pause of 1 second between each try… but i never get the OK from the HL6528. it is sent three time as a data to the server
It happens approximatively 1 times every 15 frames successfully sent to the server.
it seems that the module don’t understand the escape pattern…

it tried to use “\x1A” and also --EOF–Pattern-- as kpattern
it tried to make a pause of 300ms between the end of my data and the sending of the escape pattern…but pb is still there…

Do you have any lead to solve with this problem ?

below are the commands i send to the module (in case of a success):
(when it fails, we stopped after the “sending data + escape char” line - send three time the escape char without having the ok…)

Changing the escape pattern…
AT+KPATTERN="–EOF–Pattern–"
Rx HL6528: OK
Sending data to server…
AT+KCNXCFG=1,“GPRS”,“orange”,“orange”,“orange”,“0.0.0.0”,“0.0.0.0”,“0.0.0.0”
Rx HL6528: OK
AT+KTCPCFG=1,0,“xx.xxx.xx.xx”,xxxx
Rx HL6528: +KTCPCFG: 1
Rx HL6528: OK
AT+KTCPCNX=1
Rx HL6528: OK
Rx HL6528: +KCNX_IND: 1,4,1
Rx HL6528: +KCNX_IND: 1,1,0
Rx HL6528: +KTCP_IND: 1,1
AT+KTCPSND=1,100
Rx HL6528: CONNECT
sending data + escape char
Rx HL6528: OK
Rx HL6528: +KTCP_NOTIF: 1,8
Rx HL6528: +KTCP_DATA: 1,5
Receiving data from server …
AT+KTCPRCV=1,1000
Rx HL6528: CONNECT
Rx HL6528: 12345–EOF–Pattern–
Rx HL6528: OK
Closing Socket…
AT+KTCPCLOSE=1,1
Rx HL6528: OK
Delete Session…
AT+KTCPDEL=1
Rx HL6528: OK
Power Down Module…
AT+CPOF
Rx HL6528: +KCNX_IND: 1,5,30
Rx HL6528: OK
Module Powering down…
Rx HL6528: +KCNX_IND: 1,0,0

Hello,
Are you using latest FW ? If not then please try to reproduce the issue using the latest FW.

If you can observe the issue in the latest FW then please contact your Sierra Wireless distributor as this issue need a detailed technical analysis.

Note: Link to download latest FW.
https://source.sierrawireless.com/resources/airprime/software/hl6528x-firmware-8,-d-,10/

Thanks & Regards,
Moderator