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Based on ARM and μC / OS migration of embedded systems

Purchase Rate Fdiv = (Fpclk/16) / UART-BPS; / / set the rate U0DLM = Fdiv/256: UODLL = Fdiv% 256; U0LCR = 0x03; f0r (; Wink

{ UART0-SendStr (SENDTRING); OSTimeDly (1 );}} voidUART0_SendByte (uint8data) {UOTHR = data; / / send data while ((U0LsR & 0x40) == 0); / / wait for data transmission is completed} voidUART0_SendStr (uint8const * str) {while (1) {if ( * str == \ 0) break; UART0_SendByte (* s Ding +4- );//~ R l} 4.2.2 to send data in the PC software 86 of Shandong University (Natural Science) Vol 25 software LabVIEW serial communication function used in the call path is: hill, hit leTerrnix ~ m port at Functions-~ InstrumentI /()-+ Serial design flow shown in Figure 2. 2 serial communication loop flow chart Fig. 2Designflowchal-tofblockdiagraminserialcommunicationengineer4.3 test results of upper and lower machine running, you can see: SerialRead display character \5 Conclusion From the above transfer, and serial communication process, we can see C/0S a Ⅱ as a multitasking operating system, communications and industrial areas in a good prospect. It is in the embedded operating system has its unique application development, using real-time multitasking operating system management of resources, coordination of tasks, ease of application development. References: 【1] ZLG. ARM Embedded Essentials [M]. Beijing: Beijing Aerospace University Press, 2005. 【2] JeanJ. Labmme. № ∞ 3c / Ⅱ TheReal-TmaeKemd, See. ∞ dFAti ~ [M]. Shao Beibei translation. Beijing: Beijing Aerospace University Press,[link widoczny dla zalogowanych], 2003. 【3] Junhua. Design of Virtual Instrument Based on LabVIEW 【M]. Beijing: Electronic Industry Press, 20o3. (Continued from page 82) of self-developed software. Water measurement software such as the Haida, are set in the software configuration of a 0183 protocol NMEA data. Geophysical exploration in the shallow sea navigation system, integrated use of the GPS, depth sounder, electronic compass, and other marine equipment, measuring instruments, as one of the devices are used NMEA 0183 data protocol,[link widoczny dla zalogowanych], making the system more simple, standard specifications, developing more fast, the system more stable. 4 Conclusion NMEA ~ 0183 protocol standards to solve the different vendors, brands and models of GPS receivers, depth finder, orientation instrument, such as interface issues. This article describes its data format, meaning and method of extracting the data, program code associated with the main study the NMEA 0183 protocol information of a reception and data extraction,[link widoczny dla zalogowanych], but also to the serial programming gives a brief introduction. Through this design method can achieve fast and stable for a NMEA 0183 serial communication and information extraction, and can be applied to other high-level decision-making systems, such as various vehicle monitoring, ocean fishing and marine exploration system. This program Win. dows2000,[link widoczny dla zalogowanych], by MicrosoftVisualBasic (/ .0 compile, and being applied to practical software engineering. References: [1] Yat Fan, Chen Yuan. VisualBasic and RS 232 serial communication control of a [M]. Beijing: Tsinghua University Publishing Social ,2000:23-25. [2] Chen Yonghai, Roderick Woo. Vc + +6.0 PC,[link widoczny dla zalogowanych], under the conditions of the new serial communication with the GPS trying to [J]. Electrical Engineering Technology, 2005,3 (4): 96 -98. [3] & -; t / Bo, Hao Jinming. GPS receiver and PC-Q Serial Communication [J]. Ocean Mapping, 2005,25 (3) ,35-37. [4] Yuan security deposit . Global Positioning System (GPS) principle and application [M]. Dalian: Dalian Maritime University Press ,1999:122-129.
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