NavSpark PX1172RH User manual

GettingStartedwith
PX1172RH EvaluationBoard

TopViewofRTKEVB
USB 1 USB 2

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.

GetWindowsGNSSViewer
•https://navspark.mybigcommerce.com/content/GNSS_Viewer‐
CustomerRelease.zip
•http://navspark.mybigcommerce.com/content/GNSSViewerUserGuide.pdf

InterfaceofRTKEVB(1/3)

InterfaceofRTKEVB(2/3)
NAME DESCRIPTION
USB_1 USB port for NMEAout, RTK correction & binary command in, 115200
USB_2 USB port for updating firmware to R-chip, jumper A/B must be short and C/D
must be open, 460800
RTK_STAT_R Status signal
Low : RTK Fix for Heading
Blink : RTK Float for Heading
High : otherwise
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 1 Hz.
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 Heading: directional vector from RF_IN1 antenna to RF_IN2 antenna
RTK Position: RF_IN1 antenna position
RF_IN2 RF input #2
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 RF_IN2
1. ConnecttwoRTKantennastoRF_IN1
andRF_IN2
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
USB 2

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(1/2)
ToupdatefirmwaretoPX1172RH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with“PreciselyKB”infilename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.

FirmwareUpdate(2/2)
•5. ConnectEVBUSB2toaWindowsPCrunningGNSSViewerusing
a2nd USBcable.ConnectGNSSViewertotheEVB.
•6. Selecttheunzipped.binfilewith“RoverMB”infilenameusing
thesmallbuttononrightoftheDownloadbutton.
•7. 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