Task

You have to design a digital system to produce a PWM signal that produces pulses at a frequency in the range 50Hz-100Hz. The pulses will be between 1ms and 2ms duration. The actual length of the pulse will be determined by your name. The 1ms variation in pulse length is to be controlled by the ASCII value. After the first ms of the pulse the remainder of the pulse will be determined by the ASCII value of your initials. The means that the ASCII value determines the length of the pulse is that after the first ms of the remaining length should be:. You are to produce a system that generates two pulses whose lengths are determined by your first initial then two pulses whose lengths are determined by your second initial, then repeating back to your first initial. The system should have an input that allows you to change whether it is using the uppercase value or the lower case value of your initials.

 Testing

The testing will be done individually in the lab. You may choose for your test whether you show us the results using the waveform simulator or as an output from the Cyclone II board connected to an oscilloscope. The test should clearly show the pulses generated and show the ability to change between lower case and upper case representation. In addition you may be requested during the test to perform a minor modification to your design to show your familiarity with the system.