POS terminal Application Development - SDK, programming languages, patterns, IDEs

Question

In regards to POS (Point of Sale) Terminal Application Development, I would like to know, at least, one of these info (any experience and link to related websites would be appreciated as well):

1. most common SDK for such terminals (probably proprietary ones)
2. most common languages, compilers and DB that is used (maybe C/C++, GCC, SQLite?)
3. best design patterns to use
4. most common IDE
5. Testing framework

Answer 1

I want just share my experience about POS development.

1.most common SDK for such terminals (probably proprietary ones)

First, choose your device, for example you can write an application for Castles/VEGA7000. Go to the related site and download SDKs. There is a SDK under Cygwin for Castles/VEGA7000.

 

2.most common languages, compilers and DB that is used (maybe C/C++, GCC, SQLite?)

For example, Castles/VEGA7000 supports standard C.

 

3.best design patterns to use

I don't remember any special case which needs a specific design pattern. Think like normal PC programs.

 

4.most common IDE

The mentioned SDK has a plugin for Netbeans.

 

5.Testing framework

I can not help any more in this case!

 

If it helps, I can show you a Hello-World sample of Castles/VEGA7000:

#include <string.h>
#include <stdio.h>
#include <ctosapi.h>
#include <ctos_newlib_startup.h>

int main()
{
    BYTE key;

    sysheap_setup ( 256 * 1024 );

    CTOS_LCDTClearDisplay();    
    CTOS_LCDTPrint("Hello World!"); 
    CTOS_KBDGet(&key);  

    return 1;
}

After compile, It generates a binary file named xyz.s19 then you should make a CAP file and write it on the device. The SDK has a tool for it.