i am using python (via swig) to interface with the comedi (http:// www.comedi.org/) library for some simple data acquisition. a general category of problems i am having has to do with basic comedi structs whose members require being set to a pointer of an allocated memory buffer.
one specific example is the 'insn' struct that has a 'data' member that should point to a buffer i have previously allocated. the comedi type is 'lsampl_t*' but underneath this is simply an 'unsigned int*'. for the life of me, i haven't been able to figure out how to instantiate a memory buffer of the correct underlying type in python. whatever i try always fails when i set the struct member. TypeError: in method 'comedi_insn_struct_data_set', argument 2 of type 'lsampl_t *' [the underlying swig code seems to be (correctly) checking for an unsigned int pointer]. aside: i am currently running python v2.4.4 but could upgrade to a 2.5 version. thanks for any help. -- http://mail.python.org/mailman/listinfo/python-list
