laboratory 3f liquid crystal display Alarm time Fall 2009 Page 3f.1 Lab 3f LCD Alarm clock This laboratory assignment accompanies the book, Embedded personal computer Systems: Real time Interfacing, Second edition, by Jonathan W. Valvano, published by Thomson, copyright Â© 2006. Goals optimise an existing computer hardware/ parcel embrasure between a LCD pageant and a microcomputer, chassis a hardware/software interface for three switches apply key wakeup, plan a hardware/software device driver for generating star tones on a speaker, Measure supply original incumbent to run the embedded system, Implement a digital dispirit clock. Valvano Chapter 3 on Basic Handshake Mechanisms, Valvano class 3.2.2 on key wakeup, Valvano subsection 8.3 on LCD fundamentals, Valvano Section 2.7 on device drivers. hypertext transfer protocol://users.ece.utexas.edu/~valvano/Datasheets/LCDOptrex.pdf http://users.ece.utexas.edu/~valvano/Datasheets/LCD.pdf http://users. ece.utexas.edu/~valvano/Datasheets/LCD100.pdf http://users.ece.utexas.edu/~valvano/Datasheets/LCDHD44780.pdf OC_DP512.zip and LCD_9S12.zip projects, Lab3f_Artist.sch diagram Review crackpot files Background Microprocessor-controlled LCD displays are widely use having replaced just about of their LED counterparts, because of their low power and flexible display graphics.
This examine give illustrate how a handshaked parallel embrasure of the microcomputer will be used to output to the LCD display. The hardware for the display uses an industry standard HD44780 controller. The low-level software initializ es and outputs to the HD44780 controller. r! edden though our 9S12DP512 has many I/O pins, you will employ the 4- crook data interface. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Vss (ground) Vdd (+5V power) Vlc (0 to +5 communication channel adjustment) RS (0=instruction, 1=data) R/W (0=write to LCD, 1= represent from LCD) E (enable) DB0 (data tour 0) DB1 (data bit 1) DB2 (data bit 2) DB3 (data bit 3) DB4 (data bit 4) DB5 (data bit 5) DB6 (data bit 6) DB7 (data bit 7) LCD display...If you want to square up forth a full essay, order it on our website: OrderCustomPaper.com
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