Serial Port Complete - Latest Microcontroller projects
Chapter 7 Figure 7-15: RS-485 lines can use a variety of methods to isolate data and ground. ...
Designing RS-485 Links and Networks / #$# A typical half-duplex RS-485 network has one pair of signal wires that ...
Chapter 7 Figure 7-16: A repeater regenerates the RS-485 signals and enables the network to add nodes and cover longer distances ...
Designing RS-485 Links and Networks RS-485 transceiver, or other component. The primary node’s serial port con- nects to a serie ...
This page intentionally left blank ...
8 0 Communicating without wires has great appeal. Wireless data can pass through walls and travel for miles. Porta ...
Chapter 8 # Designing a wireless communication system requires deciding on a transmis- sion medium, a modulat ...
Going Wireless can save power by defining the data’s idle state as the carrier’s off (absent) state. In typical asynchronous com ...
Chapter 8 typically don’t have dedicated channels for sending flow-control data. Buffers or software flow control can help ensur ...
Going Wireless can transmit at up to 38,400 bps over distances of up to 80 ft. A pair of these modules can replace an RS-232 ser ...
Chapter 8 to perform the tests. On passing compliance tests, the FCC issues an ID num- ber to the product. 6 Desig ...
Going Wireless The duration of transmissions has limits that vary with the activation method and purpose: A transmitter with au ...
Chapter 8 connect to an antenna. The companion RXM-433-LR receiver module has a 433-MHz receiver that can connect to an antenna ...
Going Wireless The physical network is based on the IEEE 802.15.4 standard for wireless per- sonal area networks. The transmitte ...
Chapter 8 two modes. In one mode, the modules configure themselves automatically on powering up. The computers that interface to ...
9 2,! 3 Programmers who use Microsoft’s .NET Framework can use the SerialPort class to access COM-port ...
Chapter 9 . To access a COM port, an application creates a SerialPort object, sets the com- munication pa ...
Using .NET’s SerialPort Class The object’s PortName property should match a name in the array returned by the GetPortNames metho ...
Chapter 9 int index = -1; string[] nameArray = null; string myComPortName = null; // Specify the port to look for. myComPort ...
Using .NET’s SerialPort Class You can also set some of the parameters when initializing a SerialPort object: myComPort = new ...
«
4
5
6
7
8
9
10
11
12
13
»
Free download pdf