Page 133 - ARM Based Microcontroller Projects Using MBED
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7.15 PROJECT 12—RANDOM COLORED LED DISPLAY 119
FIG. 7.62 Project constructed on a breadboard.
BEGIN
Group RGB LED pins as a variable
DO FOREVER
Create a random number between 1 and 4
Send the generated number to RGB LED
Wait 250ms
ENDDO
END
FIG. 7.63 PDL of the program.
endless loop is formed where a random number is generated between 1 and 4 and this num-
ber is sent to the LED to display different colors every 250ms.
7.15.8 Suggestions for Additional Work
Modify the program given in Fig. 7.64 by randomly varying the delay between 50 and
300ms. What are the effects of modifying this delay?
