Page 242 - ARM Based Microcontroller Projects Using MBED

228 8. INTERMEDIATE LEVEL PROJECTS

FIG. 8.100 The generated waveform.

The program consists of an endless loop. Inside this loop, a for loop is used to iterate 10 times.
Inside this for loop, 10 steps are generated where the width of each step is 2ms. Therefore, as
shown in Fig. 8.100, the period of the generated sawtooth waveform is 20ms. In this figure, the
vertical axis is 1V/division and the horizontal axis is 5ms/division.

8.30 PROJECT 25—TRIANGULAR WAVEFORM

8.30.1 Description

In this project, we generate a triangular waveform with 100 steps going up and 100 steps
coming down. The step width is set to 100μs, that is, the period of the generated triangular
waveform is 20ms.

8.30.2 Aim
The aim of this project is to show how a triangular waveform can be generated.