NEO-M8T GNSS TIMING HAT

Working with windows

1. Download and install u-centersoftware, then open the u-center
2. Set the jumpers in A area, connect GNSS antenna,Put the receiver of the antenna in an open area outside for receive GPS signal, Connect the Module to PC by Micro USB cable
3. Note that you need to set the side of the antenna without sticker upward, check the COM port in Device Manager. Use the u-center to connect MAX-M8Q by select the COM port and select auto baud rate.
4. Enable 3D mode and export the file by selecting File -> Database Export -> Google Map Html.
5. Download Text_Release software and unzip. Open the file by Chrome, then import the HTML file which we saved above to check the position.
6. For detailed information about the u-center software, please refer to User guide

Working with RaspberryPi

Hardware connection

PIN	Raspberry Pi(BCM)	Raspberry Pi(WiringPi)	Description
5V	-	-	5V Power input
GND	-	-	Ground
RXD	P14	P15	Receive pin of UART
TXD	P15	P16	Transmit pin of UART
SDA	P2	P8	SDA pin of I2C
SCL	P3	P9	SCL pin of I2C
PPS	P18	P1	PPS pin of Module
INT	P27	P2	Wakeup pin, low active

Enable UART interface

Open a terminal and run the following commands

sudo raspi-config
#Choose Interfacing Options -> Serial -> No -> Yes
sudo reboot

Libraries installation

Install wiringPi

sudo apt-get install wiringpi
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
gpio -v
# Check the revision of libraries, it should be 2.52.

Install Python libraries

sudo apt-get update
sudo pip install RPi.GPIO
sudo apt-get install python-serial
sudo apt-get install gpsd gpsd-clients python-gps

Modify gpsd

#Open gpsd file
sudo nano /etc/default/gpsd
#Change the lines below and save
USBAUTO="false"
DEVICES="/dev/ttyS0"
GPSD_OPTIONS="/dev/ttyUSB0"

Donwload demo codes

mkdir ~/Documents/MAX-XXX_GNSS_HAT_Code
cd ~/Documents/MAX-XXX_GNSS_HAT_Code/
wget https://www.waveshare.net/w/upload/0/0f/MAX-XXX_GNSS_HAT_Code.zip
unzip MAX-XXX_GNSS_HAT_Code.zip

wiring Example

...

python Examples

Enter the folded rand run the following commands:

cd ~/Documents/MAX-XXX_GNSS_HAT_Code/RaspberryPi/python/coordinate_converter
sudo python3 main.py

Working with STM32

Hardware connection

PIN	XNUCLEO-F103RB	Description
5V	-	5V power input
GND	GND	Ground
RXD	P9(TX)	Receive pin of UART
TXD	P10(RX)	Transmit pin of UART

HAL examples

Download the demo codes
Unzip and go into the directory of STM32 example
Open the STM32 project by Keil software
Compile and download the code to the XNUCLEO-F103RB board.
Connect the UART2 of the XNUCLEO-F103RB board to PC and check the debug information by Serial Port Utility