[En-Nut-Discussion] Define CAN_BUF_SIZE in some configuartion file

[Uwe Bonnes]

Hello,

nut/arch/avr/dev/atcan.c defines

#ifndef CAN_BUF_SIZE
#  define CAN_BUF_SIZE 64
#endif

and later allocs CAN_BUF_SIZE * sizeof(CANFRAME)

On a board without external RAM, the alloc will/may fail and the CAN device
will fail too. Is there any way to define CAN_BUF_SIZE in some custom
.conf file and not changing it in the source

It seems that it is not enough to add a line like
CAN_BUF_SIZE = "4"
in my custom xxx.conf file.

-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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