Source code for spinnman.messages.scp.impl.write_fpga_register
"""
ScpWriteFPGARegisterRequest
"""
# spinnman imports
import struct
from spinnman.messages.scp.abstract_messages import BMPRequest
from spinnman.messages.scp import SCPRequestHeader
from spinnman.messages.scp.enums import SCPCommand
from .check_ok_response import CheckOKResponse
[docs]class WriteFPGARegister(BMPRequest):
""" A request for writing data to a FPGA register
"""
def __init__(self, fpga_num, addr, value, board):
""" Write the value of an FPGA (SPI) register.
See the SpI/O project's spinnaker_fpga design's `README`_ for a listing
of FPGA registers. The SpI/O project can be found on GitHub at:
https://github.com/SpiNNakerManchester/spio/
.. _README: https://github.com/SpiNNakerManchester/spio/\
blob/master/designs/spinnaker_fpgas/README.md#spi-interface
:param fpga_num: FPGA number (0, 1 or 2) to communicate with.
:type fpga_num: int
:param addr: Register address to read or write to (will be rounded
down to the nearest 32-bit word boundary).
:type addr: int
:param value: A 32-bit int value to write to the register
:type value: int
"""
BMPRequest.__init__(
self, board,
SCPRequestHeader(command=SCPCommand.CMD_LINK_WRITE),
argument_1=addr & (~0x3), argument_2=4, argument_3=fpga_num,
data=struct.pack("<I", value))
[docs] def get_scp_response(self):
"""
:rtype: spinnman.messages.scp.impl.CheckOKResponse
"""
return CheckOKResponse("Send FPGA register write", "CMD_LINK_WRITE")