2010/12/21 Andrew Errington <a.erring...@lancaster.ac.uk>: > Hello, > > I contacted the manufacturer of the sound card device I am working with. They > sent a data sheet, so I have the I/O pin numbers. They also sent me some > software to read and write bytes to the GPIO registers. This was some source > code and a compiled binary. Unfortunately the binary was compiled for a > different Product ID than the device I have. Doubleplus unfortunately the > source code for the .lib file which actually sends the data packets to the > device is already compiled. I have the header file, but not the source. > > So, to figure out the data packet format I think I have to do the following: > > 1) Recompile the demo code with the correct Product ID for my model of sound > card > 2) Use the demo app to send packets to the device and record USB data with a > sniffer app > 3) Pick out the data format > 4) Write PyUSB code to do make packets > > Unfortunately the demo code is Microsoft Visual C++ (using MFC). What is the > easiest way to recompile the source? Is there another way to examine > the .lib file and find out how it works? Is there another way to use > the .lib file with another program to send data to the device? > > I did ask the manufacturer for the source of the .lib file (just the code to > write a packet to this device) but they didn't send it to me. > > It would actually be very useful to have the demo app working because I could > test the GPIO function with the circuit I am building. If it doesn't work > then there is no point in going further. > > Any help or advice would be appreciated. > > Thank you, > > Andrew > Visual C++ free edition does not ship MFC, and as I guess you don't want to buy Visual C++ Pro just to compile the sample application, I recommend you using Platform SDK or DDK (yes, DDK may be used to compile applications) to rebuild the application, as far as I know, they ship MFC. The bad side is that you won't have IDE anymore. After that, you can start to hack the protocol.
-- Best Regards, Wander Lairson Costa LCoN - Laboratório de Computação Natural - Natural Computing Laboratory (http://www.mackenzie.com.br/lcon.html) Programa de Pós-Graduação em Engenharia Elétrica (PPGEE) Faculdade de Computação e Informática (FCI) Universidade Presbiteriana Mackenzie - SP - Brazil ------------------------------------------------------------------------------ Forrester recently released a report on the Return on Investment (ROI) of Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even within 7 months. Over 3 million businesses have gone Google with Google Apps: an online email calendar, and document program that's accessible from your browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
