W&T Electronics 58210, Manual

Page: 51 / 63

51
W&T
Firmware-Update
Subject to error and alteration
5.2 Serial update of the AT command interpreter
For this the LAN-Modem must have a serial connection to a
terminal program whose transmission parameters are
configured as follows:
Baud rate: same as the LAN-Modem
Data format: 8 data bits, no parity, 1 stop bit
Handshake: RTS/CTS (required)
The command AT** is used to place the LAN-Modem in
serial update mode, which is acknowledged with the
following message:
MB90F562 bootloader v1.x W&T xx/xxxx
Invoked by software, ESC to cancel
Waiting (Port 0)...
The function „ Send text file " of the terminal program can
n o w b e u s e d t o s e n t t h e m h x - f i l e w i t h t h e c u r r e n t
firmware. The LAN-Modem sends a continuous byte
c o u n t e r d u r i n g t h e t r a n s m i s s i o n a n d r e t u r n s t h e
message „OK“ after successful completion of the update.
The new firmware version can now be checked using the
command
AT13 .
1
You cannot use the binary data transmission
function offered by terminal programs, since this
uses additional protocols such as ZModem or Kermit.
The update mode is protected with a timeout of 30s. If no
data are transmitted within this time, the LAN-Modem
automatically resumes normal operating mode.