K-series OEM Board User Guide
5.12 PPS
Format:
PPSCONTROL <switch><polarity><period><pulse-width>
Description:
This command can be used to set the polarity, period and pulse-width of PPS output.
The PPS can’t be disabled and the update rate can be up to 10 Hz.
Parameters:
switch ‘enable’ or ‘disable’, the switch should be set to ‘enable’, and ‘disable’ is not
allowed.
polarity ‘positive’ and ‘negative’, if ‘positive’, it should be a high level pulse, a low level
pulse correspond to a ‘negative’ mode.
Period in seconds, ‘period’ can’t be configured, it is constantly 1 second temporary.
Pulse-width in microseconds, pulse-width should be less than half of period.
Example:
PPSCONTROL ENABLE POSITIVE 1 1000
5.13 Freset
This command clears data which is stored in non-volatile memory, and set the baud rate
to 115200. No data log is outputted.
Freset //Reset to the factory default
6. Firmware update
6.1 Auto Update
To update firmware of GNSS OEM board, you should follow:
1.
Connect your OEM board with your PC.
2.
Change the baud rate to 115200 in CRU software, enter commands:
com com1 115200
3.
Open firmware upgrade software, click Break -> Setting -> select serial port and
click OK. If Boot message output as below, it means the OEM board is
successfully connected; otherwise try FORCE UPDATE.
4． If parameters are incompatible after upgrading, please send command Freset to
clean all previous settings. Download the latest firmware at
http://www.comnavtech.com/download.asp?bigclassid=28.
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