barcode scanner c# code project VHDL Synthesis in C#

Decode Denso QR Bar Code in C# VHDL Synthesis

VHDL Synthesis
Denso QR Bar Code Scanner In Visual C#
Using Barcode scanner for .NET framework Control to read, scan QR Code 2d barcode image in .NET applications.
www.OnBarcode.com
QR Code Decoder In C#
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Figure 10-10 The Synthesis Tool Produces a Schematic
Barcode Decoder In Visual C#
Using Barcode reader for Visual Studio .NET Control to read, scan bar code image in .NET framework applications.
www.OnBarcode.com
Decode Bar Code In Visual C#
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
PACKAGE vm_pack IS TYPE t_vm_state IS (main_st, review_st, repeat_st, TYPE t_vm_state IS (save_st, TYPE t_vm_state IS (erase_st, send_st, TYPE t_vm_state IS (address_st, record_st, TYPE t_vm_state IS (begin_rec_st, message_st); TYPE t_key IS ( 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , TYPE t_key IS ( * , # ); END vm_pack; USE WORKvm_packALL; LIBRARY IEEE; USE IEEEstd_logic_1164ALL; ENTITY control IS PORT( clk : in std_logic; PORT( key : in t_key;
Recognize Denso QR Bar Code In C#.NET
Using Barcode decoder for VS .NET Control to read, scan QR Code JIS X 0510 image in Visual Studio .NET applications.
www.OnBarcode.com
Recognize QR Code 2d Barcode In .NET
Using Barcode scanner for ASP.NET Control to read, scan QR Code 2d barcode image in ASP.NET applications.
www.OnBarcode.com
Figure 10-11 State Transition Diagram for Voicemail Controller
Recognizing QR In .NET Framework
Using Barcode reader for Visual Studio .NET Control to read, scan QR-Code image in VS .NET applications.
www.OnBarcode.com
QR Code JIS X 0510 Scanner In Visual Basic .NET
Using Barcode scanner for VS .NET Control to read, scan QR Code image in .NET applications.
www.OnBarcode.com
Ten
Barcode Scanner In C#
Using Barcode scanner for Visual Studio .NET Control to read, scan bar code image in Visual Studio .NET applications.
www.OnBarcode.com
Linear Barcode Recognizer In C#
Using Barcode decoder for .NET Control to read, scan 1D Barcode image in .NET framework applications.
www.OnBarcode.com
Main
EAN13 Recognizer In C#.NET
Using Barcode decoder for VS .NET Control to read, scan EAN 13 image in Visual Studio .NET applications.
www.OnBarcode.com
Read Data Matrix ECC200 In Visual C#.NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan Data Matrix ECC200 image in Visual Studio .NET applications.
www.OnBarcode.com
# 1 Review 3
Recognize Royal Mail Barcode In Visual C#.NET
Using Barcode scanner for Visual Studio .NET Control to read, scan RM4SCC image in Visual Studio .NET applications.
www.OnBarcode.com
UCC - 12 Scanner In None
Using Barcode scanner for Office Word Control to read, scan UCC.EAN - 128 image in Office Word applications.
www.OnBarcode.com
# Send
Decode Bar Code In Java
Using Barcode scanner for BIRT reports Control to read, scan bar code image in BIRT applications.
www.OnBarcode.com
Scan Barcode In None
Using Barcode scanner for Office Word Control to read, scan barcode image in Microsoft Word applications.
www.OnBarcode.com
Repeat
Barcode Reader In None
Using Barcode recognizer for Word Control to read, scan bar code image in Word applications.
www.OnBarcode.com
Decoding PDF417 In None
Using Barcode scanner for Software Control to read, scan PDF 417 image in Software applications.
www.OnBarcode.com
Save
Barcode Decoder In .NET
Using Barcode reader for Visual Studio .NET Control to read, scan bar code image in .NET framework applications.
www.OnBarcode.com
ECC200 Recognizer In None
Using Barcode decoder for Font Control to read, scan DataMatrix image in Font applications.
www.OnBarcode.com
Erase
Address
Record
5 Begin Record
Record Message #
PORT( play, recrd, erase, save, address : out std_logic); END control; ARCHITECTURE synth OF control IS SIGNAL next_state, current_state : t_vm_state; BEGIN
VHDL Synthesis
PROCESS(current_state, key) BEGIN play <= 0 ; save <= 0 ; erase <= 0 ; recrd <= 0 ; address <= 0 ; CASE current_state IS WHEN main_st => IF (key = 1 ) THEN next_state <= review_st; ELSEIF (key = 2 ) THEN next_state <= send_st; ELSE next_state <= main_st; END IF; WHEN review_st => IF (key = 1 ) THEN next_state <= repeat_st; ELSEIF (key = 2 ) THEN next_state <= save_st; ELSEIF (key = 3 ) THEN next_state <= erase_st; ELSEIF (key = # ) THEN next_state <= main_st; ELSE next_state <= review_st; END IF; WHEN repeat_st => play <= 1 ; next_state <= review_st; WHEN save_st => save <= 1 ; next_state <= review_st; WHEN erase_st => erase <= 1 ; next_state <= review_st; WHEN send_st => next_state <= address_st; WHEN address_st => address <= 1 ; IF (key = # ) THEN next_state <= record_st; ELSE next_state <= address_st;
END IF; WHEN record_st => IF (key = 5 ) THEN next_state <= begin_rec_st; ELSE next_state <= record_st; END IF; WHEN begin_rec_st => recrd <= 1 ; next_state <= message_st; WHEN message_st => recrd <= 1 ; IF (key = # ) THEN next_state <= send_st; ELSE next_state <= message_st; END IF; END CASE; END PROCESS; PROCESS BEGIN WAIT UNTIL clk = 1 AND clk EVENT; current_state <= next_state; END PROCESS; END synth;
Ten
Package vm_types contains the type declarations for the state values and keys allowed by the voicemail controller Notice that the states are all named something meaningful as opposed to S1, S2, S3, and so on This makes the model much more readable This package is used by the entity to declare local signals and the key input port The entity only has one input, the key input, which represents the possible key values from a touch-tone phone keypad All of the other ports of the entity are output ports (except clk) and are used to control the voicemail system operations This model uses the two-process style to describe the operation of the state machine This style is very useful for describing state machines as one process represents the current state register, and the other process represents the next state logic The next state process starts by initializing all of the output signals to 0 The reason for this is to provide the synthesis tool with a default value to assign the signal if the signal was not assigned in the CASE statement
VHDL Synthesis
The rest of the next state process consists of one CASE statement This CASE statement describes the action to occur based on the current state of the state machine and any inputs that affect the state machine The condition that the CASE statement keys from is the current state The state machine can be placed in a different state depending on the inputs that are being tested by the current state For instance, if the current state is main_st, when the key input is 1 , the next state is review_st; when the key input is 2 , the next state is send_st When this description is synthesized using the Leonardo synthesis tool, the schematic shown in Figure 10-12 is generated The key and clk inputs are shown coming into the left side of the schematic and outputs save, recrd, address, erase, and play are shown coming out of the right side of the schematic Intermixed in the design are the state flip-flops that are used to hold the current state of the voicemail controller and the logic used to generate the next state of the controller This type of output is indicative of state machine descriptions
Copyright © OnBarcode.com . All rights reserved.