SCOPE IT OUT

THE MAGAZINE FOR COMPUTER APPLICATIONS Circuit Cellar Online offers articles illustrating creative solutions and unique applications through complete projects, practical tutorials, and useful design techniques.

	SCOPE IT OUT
Building a MPC555-Based Oscilloscope by Daniel Mihalik Start ı Software Description ı Oscilloscope Operation ı Enhancement Opportunities ı Sources and PDF ENHANCEMENT OPPORTUNITIES Although this program is useful as is for a debug tool, you may want to make software enhancements such as those listed below: add use of interrupts to reduce the CPU load start sampling after a signal changes state to provide an external trigger increase the number of samples to increase accuracy of low frequency signals increase the data transfer rate sample more than one channel use the SCIıs queue features to reduce CPU overhead The overall design of this project can be applied to many microcontrollers. As technology improves and chip speeds increase, microcontroller-based A/D conversions will become more practical, making them useful in more ways. PREVIOUS • NEXT Circuit Cellar provides up-to-date information for engineers. Visit www.circuitcellar.com for more information and additional articles. For subscription information, call (860) 875-2199, subscribe@circuitcellar.com or subscribe online. ıCircuit Cellar, the Magazine for Computer Applications. Posted with permission.