Source code for spinnman.messages.scp.impl.scp_write_memory_words_request
from spinnman.messages.scp.abstract_messages.abstract_scp_request import AbstractSCPRequest
from spinnman.exceptions import SpinnmanInvalidParameterException
from spinnman.messages.sdp.sdp_header import SDPHeader
from spinnman.messages.sdp.sdp_flag import SDPFlag
from spinnman.messages.scp.scp_request_header import SCPRequestHeader
from spinnman.messages.scp.scp_command import SCPCommand
from spinnman.messages.scp.impl.scp_check_ok_response import SCPCheckOKResponse
from spinnman.data.little_endian_byte_array_byte_writer import LittleEndianByteArrayByteWriter
[docs]class SCPWriteMemoryWordsRequest(AbstractSCPRequest):
""" A request to write memory on a chip using words (little endian)
"""
def __init__(self, x, y, base_address, data):
"""
:param x: The x-coordinate of the chip, between 0 and 255
:type x: int
:param y: The y-coordinate of the chip, between 0 and 255
:type y: int
:param base_address: The base_address to start writing to
:type base_address: int
:param data: Up to 64 ints of data to write
:type data: iterable of int
:raise spinnman.exceptions.SpinnmanInvalidParameterException:\
* If x is out of range
* If y is out of range
* If base_address is not positive
* If the length of data is 0 or more than 256
"""
if base_address < 0:
raise SpinnmanInvalidParameterException(
"base_address", str(base_address),
"Must be a positive integer")
if len(data) == 0:
raise SpinnmanInvalidParameterException(
"len(data)", str(len(data)), "Must be something to write")
data_writer = LittleEndianByteArrayByteWriter()
for value in data:
data_writer.write_int(value)
data_bytes = data_writer.data
if len(data_bytes) > 256:
raise SpinnmanInvalidParameterException(
"len(data)", str(len(data)),
"Must be less than 64 words")
super(SCPWriteMemoryWordsRequest, self).__init__(
SDPHeader(
flags=SDPFlag.REPLY_EXPECTED, destination_port=0,
destination_cpu=0, destination_chip_x=x,
destination_chip_y=y),
SCPRequestHeader(command=SCPCommand.CMD_WRITE),
argument_1=base_address, argument_2=len(data_bytes), argument_3=2,
data=data_bytes)
[docs] def get_scp_response(self):
return SCPCheckOKResponse("WriteMemoryWords", "CMD_WRITE")