c serial port communication

... non-overlapped communication because over- lapped communication requires complicated operat- ing system features such as threads, mutexes, and semaphores making cross-platform operation much harder. 5 Conclusion This ... 2003 Abstract While devices that use RS−232 and the serial port to communicate are becoming increasingly rare, it is still an important skill to have. Serial port programming, at its most basic level, consists ... the port, configur- ing the port, reading and writing to the port, and fi- nally, closing the port. It is possible then to create an API that contains the functions necessary to success- fully communicate...

Ngày tải lên: 05/11/2013, 20:15

... Framework class library can use the SerialPort class to access COM ports. Some USB devices function as virtual COM ports, which applications can access in the same way as physical serial ports. ... other support for serial- port communications. Pro- grammers thus can access ports without understanding every detail of the UART’s architecture. To gain access to a port, an application selects a ... particular topic, you can skip right to it. The first chapters focus on hardware and interfacing. Chapters 1–2 are an introduction to asynchronous serial communications. Chapter 3 discusses serial ports...

Ngày tải lên: 06/11/2013, 08:15

... Xóa c ngắt thu (RI=0) ⇒ Vi c thu dữ liệu bắt ñầu: C c xung clock dịch bit ñư c gởi ra chân TxD và dữ liệu từ thiết bị bên ngoài ñư c dịch vào chân RxD bởi c c xung clock dịch bit này (vi c ... SM0: Serial Mode 0 Bit 0 chọn chế độ c a port noái tieáp. C c chế ñộ c a port nối tiếp: Trư c khi sử dụng port nối tiếp c n phải: Chương 5: Hoạt ñộng c a port nối tiếp (Serial Port) . ... KHIỂN PORT NỐI TIẾP (SCON): Thanh ghi SCON (Serial Control Register): chứa c c bit dùng ñể ñiều khiển chế ñộ hoạt ñộng và báo trạng thái c a port nối tiếp. C u tr c của thanh ghi SCON: SCON: Serial...

Ngày tải lên: 20/01/2014, 19:20

... SerialPort1.Close() End If 'Lấy danh sách c c cổng c trên máy' For i As Integer = 0 To My.Computer.Ports.SerialPortNames.Count - 1 ComboBox1.Items.Add(My.Computer.Ports.SerialPortNames(i)) ... Chat giữa hai máy tính qua c ng Com TextBox1 TextBox RichTextBox RichTextBox1 SerialPort SerialPort1 1.2: Lập trình Để lập trình cho c c đối tượng bạn double click vào c c ... Sonbui1903 Chat giữa hai máy tính qua c ng Com II: C c ví dụ C c câu lệnh sử dụng với Serialport c thể xem tại: http://msdn.microsoft.com/en-us/library/system.io.ports.serialport.aspx#Y3078...

Ngày tải lên: 09/03/2014, 20:20

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Ngày tải lên: 19/10/2014, 23:57

... In (MOSI) microcontroller pin on every SERIAL COMMUNICATIONSUBSYSTEM 27 2.2.5 The RS-232 Communication Protocol When serial transmission occurs over a long distance, additional techniques may ... serial communication features aboard the ATmega16, we review serial communication terminology. 2.2 SERIAL COMMUNICATION TERMINOLOGY In this section, we review common terminology associated with serial ... commence. Functions for initialization, transmission, and reception are provided below. In this specific example, we divide the clock oscillator frequency by 128 to set the SCK clock frequency. //************************************************************* //spi_init:...

Ngày tải lên: 29/09/2013, 20:20

... Jeng 2002 MuDer Jeng Basics of serial communication Basics of serial communication   2002 MuDer Jeng 2002 MuDer Jeng Data communication classification Data communication classification   2002 ... communication communication ♦ List the advantages of serial communication List the advantages of serial communication over parallel over parallel ♦ Explain serial communication protocol Explain serial communication ... 8051 ♦ Describe serial communication features of the 8051 Describe serial communication features of the 8051 ♦ Program the 8051 for serial data communication Program the 8051 for serial data communication ...

Ngày tải lên: 19/10/2013, 14:15

... start-stop communication. Synchronous communication By contrast with asynchronous communication, synchronous communication comes from the mainframe world, and it assumes that data does not come one ... clocal and waits for DCD. Youcan check this with the stty command: # stty -f /dev/cuaa2 -a ppp disc; speed 57600 baud; 0 rows; 0 columns; lflags: -icanon -isig -iexten -echo -echoe -echok -echoke ... you could send up to 12, as in this example. We’ll see that synchronous communication doesn’thav e this problem. Users of synchronous communication protocols often refer to asynchronous communication...

Ngày tải lên: 11/12/2013, 00:15

... directly connected to a data bus. But in terms of transmission channel costs such as data bus cable length, data bus buffers, interface connectors, area occupied on printed circuit board (PCB), ... self-clocking (Receiver Setting the clock matching the sender’s ) Line CodingLine Coding Unipolar encoding (NRZ) RZ encoding Signal element versus data element Serial Vs Parallel Communication ... elements in Serial Communication. This application note attempts to cover enough technical details of RS232, RS422 and RS485. EIA - Electroonic Industries Association 5 Basic Components ...

Ngày tải lên: 23/03/2014, 13:20

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Ngày tải lên: 04/08/2012, 14:33

... that he so far to seek. a. had come b. had been coming c. has come d. has been coming  a 29. I tried the bus, but I missed it. a. catching b. to catch c. catch d. catch up >b 30. Women only ... am c. be d. have been > c 50. She often uses her goods as as she can. a. economic b. economically c. economical d. economicly 31. War stole his youth and his home. Everything in his life changed ... stay b. can stay c. could stay d. stay > c 46. Each athlete has to take part in the Olympic Games in the true spirit of a. sportsman b. sportsmanlike c. sportsmanship d. sports  c 47. “Why...

Ngày tải lên: 05/08/2012, 12:27

... axit hổợu c tổỡ ca c cacbuahydro dổồùi ta c duỷng cuớa VSV, do tờch luợy ca c axit beùo tổỷ do tỉì c c cháút bẹo dỉåïi t c dủng ca enzim phitaza. C ồỡng õọỹ cuớa ca c quaù trỗnh naỡy tng cuỡng ... nọng. T c hải c thãø ca sỉû tỉû bä c nọng nhỉ sau: 1/ Thay âäøi ca c chè säú caím quan : C c chè säú cm quan thay âäøi phủ th c vo mỉ c âäü tỉû bä c nọng ca khäúi hảt. Khi nhiãût âäü cuía ... giåïi hản âãø mä c bàõt âáưu mc. Âäü áøm cng cao th c cng chọng bë mä c v mä c phạt triãøn cng nhanh thaình hãû såüi náúm vaì tiãút ra ca c enzim phỏn huớy ca c chỏỳt hổợu c coù trong haỷt....

Ngày tải lên: 11/08/2012, 12:43