HP Forum Archive 20

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Repurposing the HP20b in an engineering class Message #1 Posted by Peter Murphy (Livermore) on 31 Dec 2011, 1:45 a.m. Some specifics from the professor's web site: ******* Columbia University ENGI E1112 Gateway Lab for Computer Science and Computer Engineering Fall 2011 Overview In this project, you will write new firmware for an HP 20b calculator. This is an example of embedded programming: coding software for something that does not, and should not, appear to be a computer in the traditional sense, yet is one at its core. The plummeting cost of integrated circuits has made such embedded systems ubiquitous, and this trend promises to continue. The challenges of designing such systems run the gamut from traditional electrical issues such as sensor noise and power consumption all the way to high-level computer science problems such as efficient algorithm design to human factors engineering. You will experience all of these, and learn some standard solutions, while performing this project. 1: Getting Started: Hello World 2: Listening to the Keyboard 3: Entering and displaying numbers 4: An RPN Calculator ******* Seven teams of students completed written reports and presentations. Links to those 14 items, to the professor's instructions for parts 1, 2, and 3, and to other pertinent stuff are all at the URL below. All this might hold interest for the WP34 crowd here. The URL: http://www.cs.columbia.edu/~sedwards/classes/2011/gateway-fall/index.html

Re: Repurposing the HP20b in an engineering class Message #2 Posted by Bruce Bergman on 31 Dec 2011, 1:53 a.m., in response to message #1 by Peter Murphy (Livermore) Awesome!!! I love this! More, more!

Re: Repurposing the HP20b in an engineering class Message #3 Posted by Dominic Richens on 31 Dec 2011, 8:33 a.m., in response to message #1 by Peter Murphy (Livermore) Good to see Prof Edwards creating a new generation of HP calculator fanatics :-) I wonder if he and any of his students know about wp34s? I had a quick look at a few of the reports and none of their code looks like Pauli or Marcus'

Re: Repurposing the HP20b in an engineering class Message #4 Posted by David Griffith on 1 Jan 2012, 6:22 p.m., in response to message #3 by Dominic Richens I asked the professor about this. He didn't let his students know because they might be tempted to copy it.

Re: Repurposing the HP20b in an engineering class Message #5 Posted by Marcus von Cube, Germany on 31 Dec 2011, 10:02 a.m., in response to message #1 by Peter Murphy (Livermore) It looks like they managed to create an OpenOCD configuration for the 20b for flashing which might prove useful for me. It may even help to resurrect my original development unit. :-) I'm going to download the sample files...

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