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half-duplex

  • Description: This program demonstrates a half-duplex 9600-baud UART using // Timer_A3 using no XTAL

    Description: This program demonstrates a half-duplex 9600-baud UART using // Timer_A3 using no XTAL and an external resistor for DCO ROSC. DCO used for // TACLK UART baud generation. The program will wait in LPM4, echoing back // a received character using 8N1 protocol. On valid RX character, the // character is echoed back. // Using a 100k resistor on ROSC, with default DCO setting, set DCOCLK ~ 2MHz. // ACLK = n/a, MCLK = SMCLK ~2MHz DCOCLK

    標簽: using demonstrates Description half-duplex

    上傳時間: 2014-01-14

    上傳用戶:cuiyashuo

  • Software uart using a general purpose io and an external interrupt pin of an atmel uc. half duplex o

    Software uart using a general purpose io and an external interrupt pin of an atmel uc. half duplex operation, adjustable baud rate

    標簽: interrupt Software external general

    上傳時間: 2013-12-31

    上傳用戶:zhangyigenius

  • 基于51單片機的無線識別裝置系統

    介紹一種簡單射頻識別系統設計。該設計包括閱讀器、應答器和線圈3部分。由單片機控制閱讀器向應答器發射無線信號,并接收應答器回送的信號,再通過分析回送信號識別物品。閱讀器和應答器之間以半雙工通信方式通信。 Abstract:  A simple design of radio frequency identification system is given in this paper.The design includes reader,responder and winding.Through MCU,signals are sent to responder from reader,then corresponding signals are sent back. According to the analysis of the signals sent back,the objects can be identified.half-duplex communication is adopted? between? reader? and? responder.

    標簽: 51單片機 無線識別 裝置

    上傳時間: 2013-10-11

    上傳用戶:plsee

  • 基于C8051F系列單片機的無線收發電路設計

    基于幅移鍵控技術ASK(Amplitude-Shift Keying),以C8051F340單片機作為監測終端控制器,C8051F330D單片機作為探測節點控制器,采用半雙工的通信方式,通過監控終端和探測節點的無線收發電路,實現數據的雙向無線傳輸。收發電路采用直徑為0.8 mm的漆包線自行繞制成圓形空心線圈天線,天線直徑為(3.4±0.3)cm。試驗表明,探測節點與監測終端的通信距離為24 cm,通過橋接方式,節點收發功率為102 mW時,節點間的通信距離可達20 cm。與傳統無線收發模塊相比,該無線收發電路在受體積、功耗、成本限制的場合有廣闊的應用前景。 Abstract:  Based on ASK technology and with the C8051F340 and C8051F330D MCU as the controller, using half-duplex communication mode, this paper achieves bi-directional data transfer. Transceiver circuit constituted by enameled wire which diameter is 0.8mm and wound into a diameter (3.4±0.3) cm circular hollow coil antenna. Tests show that the communication distance between detection and monitoring of the terminal is 24cm,the distance is up to 20cm between two nodes when using the manner of bridging and the node transceiver power is 102mW. Compared with the conventional wireless transceiver modules, the circuit has wide application prospect in small size, low cost and low power consumption and other characteristics.

    標簽: C8051F 單片機 無線收發 電路設計

    上傳時間: 2013-10-19

    上傳用戶:xz85592677

  • Emulating a synchronous serial

    The C500 microcontroller family usually provides only one on-chip synchronous serialchannel (SSC). If a second SSC is required, an emulation of the missing interface mayhelp to avoid an external hardware solution with additional electronic components.The solution presented in this paper and in the attached source files emulates the mostimportant SSC functions by using optimized SW routines with a performance up to 25KBaud in Slave Mode with half duplex transmission and an overhead less than 60% atSAB C513 with 12 MHz. Due to the implementation in C this performance is not the limitof the chip. A pure implementation in assembler will result in a strong reduction of theCPU load and therefore increase the maximum speed of the interface. In addition,microcontrollers like the SAB C505 will speed up the interface by a factor of two becauseof an optimized architecture compared with the SAB C513.Moreover, this solution lays stress on using as few on-chip hardware resources aspossible. A more excessive consumption of those resources will result in a highermaximum speed of the emulated interface.Due to the restricted performance of an 8 bit microcontroller a pin compatible solution isprovided only; the internal register based programming interface is replaced by a set ofsubroutine calls.The attached source files also contain a test shell, which demonstrates how to exchangeinformation between an on-chip HW-SSC and the emulated SW-SSC via 5 external wiresin different operation modes. It is based on the SAB C513 (Siemens 8 bit microcontroller).A table with load measurements is presented to give an indication for the fraction of CPUperformance required by software for emulating the SSC.

    標簽: synchronous Emulating serial

    上傳時間: 2014-01-31

    上傳用戶:z1191176801

  • LPC1700以太網MIIM接口應用筆記

    The LPC1700 Ethernet block contains a full featured 10 Mbps or 100 Mbps Ethernet MAC (Media Access Controller) designed to provide optimized performance through the use of DMA hardware acceleration. Features include a generous suite of control registers, half or full duplex operation, flow control, control frames, hardware acceleration for transmit retry, receive packet filtering and wake-up on LAN activity. Automatic frame transmission and reception with Scatter-Gather DMA off-loads many operations from the CPU.

    標簽: 1700 MIIM LPC 以太網

    上傳時間: 2013-11-09

    上傳用戶:geshaowei

  • 半條命2(Half Life2)源碼

    半條命2(Half Life2)源碼,據說是泄漏出來的游戲源碼,其中還包含了反恐精英CS游戲以及其他部分的源碼。有興趣的朋友可以去研究一下,請勿用于非法用途。

    標簽: Life2 Half 源碼

    上傳時間: 2013-12-20

    上傳用戶:1966640071

  • 這是Half rate speech(GSM 06.20)

    這是Half rate speech(GSM 06.20)

    標簽: speech 06.20 Half rate

    上傳時間: 2013-12-11

    上傳用戶:q123321

  • A language monitor provides a full duplex communications path between the print spooler and bi-direc

    A language monitor provides a full duplex communications path between the print spooler and bi-directional printers that are capable of providing software-accessible status information and adds printer control information, such as commands defined by a printer job language, to the data stream s.

    標簽: communications language bi-direc provides

    上傳時間: 2015-03-29

    上傳用戶:comua

  • Half-wavelength dipole antenna (FDTD simulation)

    Half-wavelength dipole antenna (FDTD simulation)

    標簽: Half-wavelength simulation antenna dipole

    上傳時間: 2014-08-14

    上傳用戶:hopy

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