
V1.4
– Apr-13
User’s Manual
Page 17 of 34
3.5.2 OSP MID 148 Command
It simply puts the receiver into internal boot mode. It is designed for receiver which
has a problem of doing the Hardware Bootstrap due to the design. Internal boot mode
allows you to reflash the embedded code in the receiver. Firmware loaded with 4.1.0
and above could take advantage of this procedure.
A0A20001
– Start sequence and payload length (1 byte )
94
– Payload
0094B0B3
– Message checksum and end sequence
3.5.3 NMEA MID 117 Command
This command is a request that the GPS receiver perform an orderly shutdown and
switch to boot mode. Firmware loaded with 4.1.0 and above could take advantage of
this procedure.
$PSRF117,32*0D<CR><LF>
Note:
Maestro highly recommends that all hardware designs provide access to the
hardware bootstrap configuration input (pin) in case of failed flash upload.