NavSpark PX1172R User manual
Getting Started with
PX1172R Evaluation Board
Top View of RTK EVB
USB 1Not Used
Not UsedRF Input
Install USB Driver from Silicon Lab Site
https://www.silabs.com/developers/usb-to-uart-bridge-vcp-drivers
After connecting USB cable to
USB1 port, user should see a
COM port appear on Device
Manager.
Interface of RTK EVB (1/3)
Interface of RTK EVB (2/3)
NAME DESCRIPTION
USB_1
USB
port for NMEA out, RTK correction & binary command in, 115200
USB_2
Not
Used
RTK_STAT_R
Not Used
RTK_STAT_B
Status signal
Low :
RTK Fix for Positioning
Blink
:RTK Float for Positioning
High
: otherwise
1PPS
One
‐pulse‐per‐second (1PPS) time mark output, 3.3V LV‐TTL. The rising
edge
synchronized to UTC second when getting 3D position fix. The pulse
d
uration
is about 100msec at rate of 1Hz.
VDD33
3.3V power input
GND
Ground
Interface of RTK EVB (3/3)
NAME DESCRIPTION
VCC_RF
Power for antenna or external LNA
RF_IN1
RF
input #1
RTK
Position: RF_IN1 antenna position
RF_IN2
Not Used
RSTN
External
active-low reset input. Only needed when power supply rise time
is
very
slow or software controlled reset is desired.
BOOT_SEL
Leave
unconnected for normal use. Pull-low for loading firmware into
empty
or
corrupted flash memory from ROM mode.
TRIG
External interrupt trig input.
G/H
Jumper G/H must be short for normal use.
EVB Usage (1/3)
USB 1
RF_IN1 Not Used
1. Connect RTK antennas to RF_IN1
2. Run GNSS Viewer on Windows laptop
3. Connect USB cable to USB1 and
Windows laptop
4. Connect GNSS Viewer to EVB at 115200
baud rate
Not Used
EVB Usage (2/3)
Configure NTRIP Connection Setting
Result on GNSS Viewer
After NTRIP Client getting RTK correction data and EVB
receiving signal testing outdoors under open sky, the
receiver will go from 3D Fix to RTK Float to RTK Fix state.
Firmware Update
To update firmware to PX1172R EVB:
•1. Unzip the firmware file
•2. Connect EVB USB1 to a Windows PC running GNSS Viewer.
Connect GNSS Viewer to the EVB.
•3. Select the unzipped .bin file using the small button on right of
the Download button.
•4. Click the Download button, first boot-loader will be downloaded,
and then main firmware will be downloaded. After downloading is
done, the pop-up window will close and module will reboot.
EVB Schematic 1/3
EVB Schematic 2/3
EVB Schematic 3/3
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