reading registers in hw using python -

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my aim read registers on fpga using python script. have implemented registers on hardware (fpga) , trying read registers.there programs in c able read registers. have write read/write program in python can integrate verifcation environment (written in python). new python (beginner level) wish can guide me through suggestions , comments. below code implemented.

this code. 

#!/usr/bin/env python   import array import fcntl import re import socket import struct import os  #connectedsockets = {}  # ioctl commands siocregread = 0x89f0 siocregwrite = 0x89f1  reg = 0x58000008  # open nf descriptor # open file nf = os.open( "/dev/nf10", os.o_rdwr ) print "opened nf descriptor"  # file object above file. nf0 = os.fdopen(nf, "w+")  #print "opened nf0 file object" inner_struct = struct.pack("ii", reg, 0x0) inner_struct_pinned = array.array('c', inner_struct) print inner_struct_pinned fcntl.ioctl(nf0, siocregread,) retval = struct.unpack("ii", inner_struct_pinned)[0] print retval  os.fdclose(nf)

you won't able in pure python. if c code have in shared library (.dll in windows, .so in linux), may able access using ctypes module. if not, have wrap c code in either shared library or python extension module (more complex on c side, simpler on python side).

for examples of kind of thing, recommend o'reilly book "real world instrumentation python", j.m. hughes.


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