|A little help from my friends ...|
Message #1 Posted by Meindert Kuipers on 31 Jan 2011, 3:29 p.m.
I am looking for a little bit of help for a small HP41 experiment from someone on the forum who is a bit experienced with web programming (java?).
As you may know I have been working on the MLDL2000 for some time, and late last year I became aware of a design challenge (see here). I wanted to add an external SD controller module to the new MLDL2000, instead I have decided to use the MBED module for that purpose. I have been working hard to get a breadboard prototype up and running, and it now works quite well. The HP41 can now access files on an SD card and a USB stick, and I can load and save ROM images and user code programs (.RAW files).
One of the last items remaining to be implemented is networking functionality. I have done some tests with the MBED module on a network, and I can easily download a file (of course that will be a ROM image or focal program in .RAW format soon). For demonstration of some of the other networking capabilities I kindly ask some help.
I can program a bit in C/C++, Delphi, VHDL, Focal and mcode, but I have never done anything with web-based applications. I therefore would like to get in touch with someone who can create a web-based application to send and receive data to my network enabled HP41. For example to display on a webpage an HP41 display that I can send data to, and a few buttons or sliders that I can read data from.
The MBED libraries support an HTTP client and server (see here) and many other features. I have successfully used the HTTP Client to stream the contents of a ROM image to the MBED module but I want to demonstrate something else as well.
Honestly, I have no idea even where to start with building a web application or script for these. The Twitter example on the MBED website is nice, but I want something new for this.
Please contact me by email if you have a bit of time to help me here or want some more info.
See here for a picture of my breadboard setup