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[GPS develop] gps1_5 DL : 0: gps1_5.c begins by opening a file gpsData.txt which will save all GPS message strings in ASCII. Next, the serial port is opened using a function prototype comm_setting() which invokes functions found in the IBMCOM library. A while loop is entered, where the statement charRead = com_rx() serially reads a character and checks if it begins with a dollar sign. If so, this indicates a new GPS message string has been received and more characters are read until a carriage return (CR) is found. tempString holds the GPS message string that was serially read. If it is a $GPGGA message, additional reading is done, where we know that commas separate geospatial data. sscanf is used to extract numerical data from the ASCII characters. -gps1_5.c begins by opening a file gpsData.txt which will save all GPS message strings in ASCII. Next, the serial port is opened using a function prototype comm_setting() which invokes functions found in the IBMCOM library. A while loop is entered, where the statement charRead = com_rx() serially reads a character and checks if it begins with a dollar sign. If so, this indicates a new GPS message string has been received and more characters are read until a carriage return (CR) is found. tempString holds the GPS message string that was serially read. If it is a $GPGGA message, additional reading is done, where we know that commas separate geospatial data. sscanf is used to extract numerical data from the ASCII characters.
Date : 2025-12-22 Size : 3kb User : icach
[GPS develop] Rinex DL : 0: 读取GPS rinex文件，已经经运行无误的c++代码-C++ code for reading/writing the six ASCII file types defined in RINEX version 2.10
Date : 2025-12-22 Size : 141kb User : jgw
[GPS develop] GPSTIMER DL : 0: GPS对时原码 E531GPS模块的ASCII格式报文-GPS on the module when the original code E531GPS ASCII format message
Date : 2025-12-22 Size : 151kb User : lili