ex2_f10 - EEL 4744C – Dr Gugel Last Name First Name Fall...

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Unformatted text preview: EEL 4744C – Dr. Gugel Last Name______________________________ First Name ______________ Fall 2010 Exam #2 UFID#__________________________________________ • Open book and open notes, 90-minute examination to be done in pencil. • No electronic devices are permitted. • All work and solutions are to be written on the exam where appropriate. Point System (for instructor and TA use only) Page 2 12 points _________________ Page 3 14 points _________________ Page 4 20 points _________________ Page 5 18 points _________________ Page 6 10 points _________________ Page 7 26 points _________________ Brought my Board! 3 points _________________ TOTAL _________________ out of 103 Grade Review Information: ( NOTE: deadline of request for grade review is the day the exam is returned .) Page 2 Page Score = 1.0 Assuming that we are using our lab’s 15 MHz DSP board , design a system that will do the following: Read in 100 10 characters from a PC via the USB port (SCI B) and write the characters to a SERIAL LCD at a rate of 1 character per 1 mSec . Repeat for every new 100 characters read in from the PC. You must read in all 100 characters before sending them out at the specified rate. Assume the PC sends 100 characters and then waits at least 1 second to send another group of 100 characters. The SERIAL LCD has the following connections: Pin 1 –> VCC , Pin 2 –> GND , Pin 3 –> Sin , Pin 4 –> /CS The SERIAL LCD has the following functionality: When /CS is high, characters sent to the LCD go to the Command Register. The command register has the same function/commands as a typical 4 bit parallel LCD. When /CS is low, characters sent to the LCD are written to the Data Register and therefore show up on the screen. The SERIAL LCD has a fixed communication protocol of 1 start bit, 1 stop bit, 7 data bits, 1 Odd parity bit and a BAUD Rate = 7.5K Hz . Design Rules: A. Use UART SCI A on our DSP board to interface to the Serial LCD. B. Use TIMER 0 in an interrupt driven manner to set up the 1 msec timing interval. C. Once the TIMER 0 interrupt has been enabled, it should not be disabled for any reason. D. Use polling for all serial communications. Therefore only the Timer is interrupt driven. 1.1 Show the physical connections required on the LCD. Label all signals with as much detail as possible for maximum points. i.e. Show the connections between the DSP and LCD! Show all LCD pin connections! (5 pt.): 1.2 Write the code to initialize the SCIA UART attached to the Serial LCD. Assume the clocks have been set up already for SCIB (USB) . Specify all Register Addresses Used. (3 pt.) ______________________________________________ ______________________________________________ ______________________________________________ ______________________________________________ ______________________________________________ ______________________________________________ ______________________________________________ ______________________________________________ ______________________________________________...
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ex2_f10 - EEL 4744C – Dr Gugel Last Name First Name Fall...

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