UART
所属分类:DSP编程
开发工具:VHDL
文件大小:42KB
下载次数:5
上传日期:2011-06-04 21:48:41
上 传 者:
ryan001
说明: DSP 编程,实现跑马灯的功能,通过控制变量的值可以实现控制跑马灯的时间间隔
(DSP programming, feature marquees, by controlling the value of a variable can control the time interval Marquee)
文件列表:
UART\ADSP-BF533_ASM.ldf (1529, 2005-02-15)
UART\Debug\linker_log.xml (41713, 2006-10-05)
UART\Debug\main.doj (5856, 2006-10-05)
UART\Debug\startup.doj (4896, 2006-10-05)
UART\Debug\uart.dxe (27256, 2006-10-05)
UART\Debug\uart.log (111, 2011-06-03)
UART\Debug\uartlib.doj (4880, 2006-10-05)
UART\Debug\_desktop.ini (9, 2006-11-09)
UART\main.asm (13914, 2006-10-04)
UART\sicnames.h (2236, 2005-02-15)
UART\startup.asm (5605, 2005-02-15)
UART\startup.h (906, 2005-02-15)
UART\uart.dpj (4415, 2006-09-29)
UART\uart.dxe (32952, 2005-02-15)
UART\uart.mak (3700, 2011-06-03)
UART\uartlib.asm (12023, 2005-02-15)
UART\uartlib.h (890, 2005-02-15)
UART\_desktop.ini (9, 2006-11-09)
UART\Debug (0, 2011-06-03)
UART (0, 2011-06-03)
****************************************************************************************************
ADSP-BF533 EZ-KIT Lite UART Example
Analog Devices, Inc.
DSP Division
Three Technology Way
Norwood, MA 02062
Date Created: 04/03/03
____________________________________________________________________________________________________
This directory contains an example ADSP-BF533 UART Example Project.
The example illustrates autobaud detection and UART polling and interrupt
operation.
Files contained in this directory:
uart.dpj VisualDSP++ project file
uart.mak Make file
main.asm Main assembly source file
uartlib.asm Assembly library file containing some UART subfunctions
startup.asm Default system initialization assembly file
uartlib.h .extern directives for uartlib.asm library functions
startup.h defines for startup.asm
sicnames.h some more SIC register and bit names
adsp-BF533_asm.ldf default linker description file
readme.txt this file
____________________________________________________________________________________________________
CONTENTS
I. FUNCTIONAL DESCRIPTION
II. IMPLEMENTATION DESCRIPTION
III. OPERATION DESCRIPTION
I. FUNCTIONAL DESCRIPTION
II. IMPLEMENTATION DESCRIPTION
The Blackfin replies with a string send by polling operation. It returns
also the calculated UART divisor latch value of the DLH:DLL register pair.
Furthermore it sends another string using interrupt mode. Afterward it
performs simple echo operation based on RX interrupts. Every received
character will be sent back to the TX line.
III. OPERATION DESCRIPTION
- Open the project "uart.dpj" in an ADSP-BF533 EZ-KIT Lite session in the VisualDSP Integrated
Development Environment (IDDE).
- Under the "Project" tab, select "Build Project" (program is then loaded automatically into DSP).
- Connect the EZ-KIT to the PC using a 1:1 EIA-232 serial cable.
- Invoke any terminal program, for example the Windows Hyperterminal. Choose any bit rate you
like, but make sure that you use 8-bit, no parity format. Don't use any handshake, such as
XON/XOFF software handshake or RTS/CTS hardware handshake! Also make sure echo mode is off.
If using Hyperterminal this can be done by selecting Properties from the file menu and clicking
on the ASCII Setup button from the Settings tab.
- Once terminal connection is established, select "Run" from the "Debug" tab on the menu bar
of VisualDSP.
- Press the '@' key (ASCII 0x40) in the terminal program to start autobaud detection.
- See the character echo back in the terminal program.
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