barcode scanner sdk vb.net Binary Pulsing in Software

Generation QR-Code in Software Binary Pulsing

Binary Pulsing
QR Code JIS X 0510 Reader In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Printing QR Code In None
Using Barcode creator for Software Control to generate, create QR Code JIS X 0510 image in Software applications.
Program 13-1
QR Code ISO/IEC18004 Recognizer In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
QR Code ISO/IEC18004 Creator In Visual C#.NET
Using Barcode generator for Visual Studio .NET Control to generate, create Denso QR Bar Code image in .NET applications.
Blinking an LED: Simple Method Calls (continued)
QR Code 2d Barcode Creation In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
Making Denso QR Bar Code In .NET
Using Barcode maker for .NET framework Control to generate, create QR Code ISO/IEC18004 image in Visual Studio .NET applications.
PRI turnOn_LED 'method to set the LED line high outa[output_pin] :=inv_high 'line that actually sets the LED high PRI turnOff_LED outa[output_pin] :=inv_low PRI wait waitCnt(waitPeriod + cnt) 'method to set the LED line low 'line that actually sets the LED low 'delay method 'delay is specified by the waitPeriod
QR Code JIS X 0510 Generation In VB.NET
Using Barcode maker for Visual Studio .NET Control to generate, create QR image in Visual Studio .NET applications.
Bar Code Drawer In None
Using Barcode encoder for Software Control to generate, create bar code image in Software applications.
Here is what is going on in Program 13-1:
EAN13 Printer In None
Using Barcode creator for Software Control to generate, create EAN-13 image in Software applications.
Code 39 Encoder In None
Using Barcode encoder for Software Control to generate, create Code 39 Full ASCII image in Software applications.
Program 13-1 declares four constants and then starts a public procedure that calls
ECC200 Creator In None
Using Barcode creation for Software Control to generate, create Data Matrix ECC200 image in Software applications.
Making Bar Code In None
Using Barcode creator for Software Control to generate, create barcode image in Software applications.
the three private methods that control the LED and the timing delay. All are named to be easy to remember. The CON block states the constants that will be used in the program. In this particular case, we have four constants that define the operating parameters for the program. PUB Go, the main procedure, defines the pin we are going to use as an output and then repeats the main loop of the program. The three PRI (private) methods that are called provide the On/Off and delay functions used by the program. Other programs you write may be much more complicated, but they will follow this basic layout. We will creep up on more complex programs so that you will have no problem following what is going on. The wiring needed between the Propeller chip and the LED is shown in Figure 13-1. I have omitted all the power wiring so that we can concentrate on the wiring we have to create. The power wiring follows the recommendation of Parallax for their Education Kit, which will be used as the basic layout throughout this book. All the experiments will fit on the prescribed Education Kit assemblage of breadboards. The layout of the basic electronics that power the board is shown in Figure 13-2.
Paint Code 9/3 In None
Using Barcode encoder for Software Control to generate, create Code 93 Full ASCII image in Software applications.
UPC Code Scanner In Visual C#
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET framework applications.
Figure 13-1 Wiring layout for blinking an LED
Scan Bar Code In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
EAN-13 Supplement 5 Generation In .NET
Using Barcode printer for ASP.NET Control to generate, create EAN / UCC - 13 image in ASP.NET applications.
Binary Pulsing
Make Bar Code In Java
Using Barcode maker for Android Control to generate, create barcode image in Android applications.
Recognize UPC A In Visual Studio .NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in .NET framework applications.
Once you have the wiring connected up and the program running, you will have learned the basic procedure for running all programs. As a general rule, we will reserve pins P26 and P27 for general output from the Propeller chip. These lines need to go through a 7404 hex buffer to prevent overloading the very limited current capacity of the Propeller pins. Figure 13-3 shows the placement of the 7404 hex buffer on the breadboards to accomplish this. For the record, Figure 13-2 provides the schematic for wiring up the basic Propeller layout. This is as suggested for the Propeller Education Kit by Parallax.
Encode Code 39 Extended In Objective-C
Using Barcode creator for iPhone Control to generate, create Code 39 Extended image in iPhone applications.
Code128 Printer In None
Using Barcode drawer for Online Control to generate, create Code 128A image in Online applications.
note This layout will be used for all the experiments in this book.
The Memory module is not shown in this layout, and we will not need it for any of our experiments. However, you can install it if you like for your own experiments. All experiments use this basic layout. Parallax recommends that you connect power and ground to both sides of the Propeller, as is shown in Figure 13-2.
Figure 13-2 Basic power-up layout and USB connection for a Propeller chip
Binary Pulsing
Figure 13-3 Hex buffer placement and wiring layout
This page intentionally left blank
Setting Up a 16-CharaCter-by2-Line LiqUid CryStaL diSpLay
Although this is early in the game, we absolutely have to have some way to look at the results of what we are doing in the Propeller as we develop our programs. We will go over the operation of a 16-character-by-2-line LCD in absolute detail later in 21. For now, we just need to design the wiring layout and develop the code that will allow us to start using the LCD with our experiments (with minimal explanations). The minimal discussion provided in this chapter is designed to keep you from getting completely lost as you install your LCD onto the breadboard. Almost all the 16-character-by-2-line displays on the market are controlled by the Hitachi HD44780 or a compatible LCD controller. Do not purchase an LCD that does not meet this specification because all the work described in the book is based on LCDs as controlled by this Hitachi controller. The possibility that we could buy a bare LCD and write all the code to control it is beyond the scope of this book. Looking through the data sheet that comes with the display, you will find a pinout table very similar to the one shown in Table 14-1. We will use this table to wire the LCD to the Propeller chip. We will be using the Parallax Education Kit wired exactly as suggested by Parallax for their educational materials. See Figure 14-1 for a pictorial representation of the connections.
note Many of the units do not support lines 15 and 16, and we will not be using them in any of our experiments either.
Position the LCD on a bottom line of the board, as shown, with pin 14 in the rightmost holes at the bottom of the perforated board assembly. The wiring scheme we will be using is listed in Table 14-2.
Copyright © OnBarcode.com . All rights reserved.