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Hemmerling ^(R) Data Aquisition 3

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The Story

In Summer 1999, I was involved for two month in an instrumentation project using 80C166 microcontrollers. A ready-to-go 80C166 microcontroller board was used to address an A/D Board. The collected data from the A/D board is averaged (each 4,8,16,.. values) and the average data is transfered to a 8255 parallel port card of a special instrumentation PC. The data transfer to the PC is announced by a strobe signal which can be used as interrupt source by the PC. The PC may send commands to and receive status reports from the microcontroller by a serial RS232 connection. The data transfer from the A/D board is interrupt-driven. Several different interrupt drivers were written to experiment with the special interrupt features like the PEC interrupt mode of the microcontroller. The C166 board

Facts

Target CPU: 80C166
The software is coded in "C" language
Target computer hardware: A ready-to-go microcontroller board miniModul-166 by Phytec ( 1, 2 ), a Burr-Brown A/D Board "DEM-ADS7815U Evaluation Fixture" (featuring the Burr-Brown A/D converter "ADS7815").
Development tools: I used the C-Compiler and the DSCOPE debugger by Keil Software for host development.
Project language: German.