Raphael Neider schrieb:
> Hi,
> 
> I am not sure whether adding special cases for each device/device class
> is a good idea. This will easily become unmaintainable, I fear.
> If the devices differed only inthe number of ADCs, one could add
> something like
>     #define HASADCON0 1
>     #undef HASADCON1

its not only the number that differ, but also the numbering and the bit
mask behind the different numbers.
For example: first channel is ADC_CHN_1..7 = 0x00..0x07 in the adc.h
with missing channel 0x02,
on pic18f2550 first channel is ADC_CHN_0 = 0x00 max 13 channels,
on pic18f1220 first channel is ADC_CHN0..6 = 0x00..0x06


> to the device headers, provide copies of the adc routines for all
> classes and select the correct one from additional defines from within
> the device headers, a la
>     #define adc_close adc_close2
> where adc_close2 is the current adc_close() referencing ADCON0...
> 
> However, if the configuration requirements change even within a device
> category, many more defines are required to accomodate for that...
> Unfortunately I am not really familiar with ADC on even one of the pic16
> devices to be able to estimate the effort required; any proposals are
> welcome.
> 
> @Vangelis: Shall I commit the patch (see previous mail in this thread)?
> 
>> Is it possible to add possible to add a warning in the #else path when
>> using a function which is not directly programmed for the give chip?
> A preprocessor construct like
>   #warning my message
> should do the trick, but this will trigger a warning only when the
> library is built, not when the user builds his/her program... The latter
> would require the #warning to reside in at least one ADC header file
> (which is doubtlessly a viable option).

at least you need to inform the programmer that the lib he is using is
not directly made for his device.









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