【每周推荐】存储涨价，这款RISC-V单板计算机依旧好价，速看玩家评测：GPS定位

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本测评由创作者“无垠的广袤”分享，文章介绍了昉·星光2单板计算机结合GPS模块和串口通信功能实现GPS定位的项目设计，原文链接：【昉·星光2 RISC-V 单板计算机】GPS定位。

硬件连接

实物连接

参考：使用昉·星光 2的UART读取GPS数据 .

流程图

代码

import serial

#Set serial port parameters(adjust according to your GPS module)

SERIAL_PORT ="/dev/ttyS0" # It might be /dev/ttyUSB0 or others

BAUDRATE =9600 # Common baud rate for GPS modules is 9600

def read_all_gps_data():

try:

print(f"Starting to read GPS data (Serial port: {SERIAL_PORT}, Baudrate: {BAUDRATE})...")

with serial.Serial(SERIAL_PORT, BAUDRATE, timeout=1) as ser:

while True:

line = ser.readline().decode('ascii', errors='ignore').strip()

if line: # Print only if not an empty line

print(line)

except KeyboardInterrupt:

print("\nStopping GPS data reading")

except Exception as e:

print(f"An error occurred: {e}")

if __name__ =="__main__":

read_all_gps_data()

效果

打印GPS原始数据，包括多套卫星定位系统

解析GPS原始数据

安装NMEA解析库

apt install python3-nmea2

代码

调用pynmea2和serial库函数，实现串口数据读取与时间及坐标转换，并将结果打印至终端。

import serial

import time

from pynmea2 import parse

def parse_gps_data():

try:

ser = serial.Serial("/dev/ttyS0", baudrate=9600, timeout=1)

print("Reading GPS data...")

while True:

line = ser.readline().decode('ascii', errors='ignore').strip()

if not line:

continue

try:

data =parse(line)

#Force extraction of time(return"00:00:00"if it doesn't exist)

time_utc =getattr(data,'timestamp',"0").strftime("%H:%M:%S")ifhasattr(data,'timestamp')else"00:00:00"

#Force extraction of latitude and longitude(return0.0if they don't exist)

lat =getattr(data,'latitude',0.0)

lon =getattr(data,'longitude',0.0)

lat_dir ='N'if lat >=0else'S'

lon_dir ='E'if lon >=0else'W'

lat_deg = f"{abs(lat):.6f} deg {lat_dir}"

lon_deg = f"{abs(lon):.6f} deg {lon_dir}"

#Print a single set of data

print(f"Time (UTC): {time_utc}")

print(f"Latitude: {lat_deg}")

print(f"Longitude: {lon_deg}")

time.sleep(1)

except Exception as e:

continue # Silently ignore parsing errors

except KeyboardInterrupt:

print("\nStopping GPS data reading")

except Exception as e:

print(f"Serial port error: {e}")

finally:

if'ser' in locals():

ser.close()

print("Serial port closed")

if __name__ =="__main__":

parse_gps_data()

保存代码，终端执行指令python3 gps_time_coordinate.py 运行串口数据转换程序；

效果

终端打印时间和经纬度信息，更新的时间间隔为1秒。

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