Source code for spinnman.messages.scp.impl.scp_flood_fill_start_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
_NNP_FORWARD_RETRY = (1 << 31) | (0x3f << 8) | 0x18
_NNP_FLOOD_FILL_START = 6
[docs]class SCPFloodFillStartRequest(AbstractSCPRequest):
""" A request to start a flood fill of data
"""
def __init__(self, nearest_neighbour_id, n_blocks, x=None, y=None):
"""
:param nearest_neighbour_id: The id of the packet, between 0 and 127
:type nearest_neighbour_id: int
:param n_blocks: The number of blocks of data that will be sent,\
between 0 and 255
:type n_blocks: int
:param x: The x-coordindate of the chip to load the data on to. If\
not specified, the data will be loaded on to all chips
:type x: int
:param y: The y-coordinate of the chip to load the data on to. If\
not specified, the data will be loaded on to all chips
:type y: int
:raise spinnman.exceptions.SpinnmanInvalidParameterException:
* If the id is out of range
* If the number of blocks is out of range
* If only one of x or y is specified
* If x and y are out of range
"""
if nearest_neighbour_id < 0 or nearest_neighbour_id > 127:
raise SpinnmanInvalidParameterException(
"nearest_neighbour_id", str(nearest_neighbour_id),
"Must be between 0 and 127")
if n_blocks < 0 or n_blocks > 255:
raise SpinnmanInvalidParameterException(
"n_blocks", str(n_blocks), "Must be between 0 and 255")
if (x is None and y is not None) or (x is not None and y is None):
raise SpinnmanInvalidParameterException(
"x and y", "{} and {}".format(x, y),
"Both or neither of x and y must be specified")
if x is not None and (x < 0 or x > 255):
raise SpinnmanInvalidParameterException(
"x", str(x), "Must be between 0 and 255")
if y is not None and (y < 0 or y > 255):
raise SpinnmanInvalidParameterException(
"y", str(y), "Must be between 0 and 255")
key = ((_NNP_FLOOD_FILL_START << 24) | (nearest_neighbour_id << 16)
| (n_blocks << 8))
data = 0xFFFF
if x is not None and y is not None:
m = ((y & 3) * 4) + (x & 3)
data = (((x & 0xfc) << 24) + ((y & 0xfc) << 16)
+ (3 << 16) + (1 << m))
super(SCPFloodFillStartRequest, self).__init__(
SDPHeader(flags=SDPFlag.REPLY_EXPECTED, destination_port=0,
destination_cpu=0, destination_chip_x=0,
destination_chip_y=0),
SCPRequestHeader(command=SCPCommand.CMD_NNP),
argument_1=key, argument_2=data, argument_3=_NNP_FORWARD_RETRY)
[docs] def get_scp_response(self):
return SCPCheckOKResponse("Flood Fill", "CMD_NNP:NNP_FFS")