Chengdu Ebyte Electronic Technology Co., Ltd.
Copyright © 2012–2022 , Chengdu Ebyte Electronic Technology Co., Ltd.
36
Parameter D
escription
When mode is 1, it enters transparent transmission mode. For con
firm and nbtrials, please refer to the corresponding AT command,
which is only valid for this transmission, and needs to be reset af
ter exiting.
Return valu
e descriptio
n
OK means to enter the transparent transmission mode.
Description of return value in transparent transmission mode:
fram
e he
ader
Status bit 1byt
e
1byte
1byte
nbyte
A 1
A1
00 (not conne
cted to the net
work)
\
\
\
01 (send data) send length
\
\
02 (data sendi
ng)
\
\
\
03 (send time
out, unconfirm
msg has no s
uch return)
Send timeout \
\
04 (successfull
y sent, the ser
ver return valu
e is received,
unconfirm msg
has no such
return)
The port nu
mber
Length of
received d
ata (when
it is 0, no
data is se
nt)
Send data
(when the
data length
is 0, this
bit is inv
alid)
05 (Exit trans
parent transmis
sion mode)
\
\
\
FF (data too l
ong)
\
\
\
Example
In AT command mode:
AT+CPASSTHOUGHMODE=1,1,8