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Re: Talking to a 'C' program

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  Re: Talking to a 'C' program Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-11-08 14:37 +0000
    Re: Talking to a 'C' program Grant Edwards <invalid@invalid.invalid> - 2013-11-08 15:04 +0000

#58797 — Re: Talking to a 'C' program

On 8 November 2013 14:23, John Pote <johnhpote@o2.co.uk> wrote:
> Hi all,
>
> I have the task of testing some embedded 'C' code for a small micro-controller. Thought it would be a good idea to test it on the PC first to make sure the algorithm is correct then perhaps test it on the controller via RS232 and an appropriate wrapper round the 'C' functions.
>
> On the PC I can use Python's unit test library module and logging to create a nice and easy to use environment (I like Python). So my question is how to communicate from Python to the C module on the PC. What I'd like is simplicity and ease of setting up. All I can think of myself is to use sockets.
>
> Any ideas on how to do this would be gratefully appreciated.

Have a look at Cython:
http://cython.org/

This enables you to call C code from Python code within the same process.

> Also as I don't have any microsoft offerings of a C compiler any suggestions as to a suitable C compiler for a PC appreciated as well. llvm? mingw? gcc?

I assume that by "PC" you mean Windows in which case mingw is a fine
choice and is officially supported by Cython.


Oscar

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#58802

On 2013-11-08, Oscar Benjamin <oscar.j.benjamin@gmail.com> wrote:
> On 8 November 2013 14:23, John Pote <johnhpote@o2.co.uk> wrote:
>> Hi all,
>>
>> I have the task of testing some embedded 'C' code for a small
>> micro-controller. Thought it would be a good idea to test it on the
>> PC first to make sure the algorithm is correct then perhaps test it
>> on the controller via RS232 and an appropriate wrapper round the 'C'
>> functions.
>>
>> On the PC I can use Python's unit test library module and logging to
>> create a nice and easy to use environment (I like Python). So my
>> question is how to communicate from Python to the C module on the PC.
>> What I'd like is simplicity and ease of setting up. All I can think
>> of myself is to use sockets.
>>
>> Any ideas on how to do this would be gratefully appreciated.
>
> Have a look at Cython:
> http://cython.org/
>
> This enables you to call C code from Python code within the same
> process.

You can also use c-types for that

  http://docs.python.org/2/library/ctypes.html#module-ctypes

I've used Python/ctypes to exercise libraries written in C, but I've
never done it under Windows.  However, others have:

http://hakantiftikci.wordpress.com/2009/11/14/generating-dll-using-mingw-and-using-them-in-python-via-ctypes/

-- 
Grant Edwards               grant.b.edwards        Yow! Give them RADAR-GUIDED
                                  at               SKEE-BALL LANES and
                              gmail.com            VELVEETA BURRITOS!!

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