def test_read_clears(mbed):
"""Tests that reading a packet from the MBED then resetting works"""
# Ensure MBED is empty
_ = mbed.get_spinn()
# Send a simulated packet
mbed.send_sim(spinn_2_to_7(DVSPacket(10, 20, 1), SpiNNMode.SPINN_MODE_128))
# Check that there is a returned value
(_, _, packets) = mbed.get_spinn()
assert packets
# Read again and check that there is nothing
(_, _, packets) = mbed.get_spinn()
assert not packets
def test_many_packets(mbed, board, log, packets):
"""Tests the time taken for many packets to be sent is small"""
# Clear the MBED and tell it to wait
mbed.get_spinn()
mbed.wait()
# Work out x limits for 20 packets
x_min = 12
x_step = 6
x_max = 100 + (packets) * x_step
y_max = 90
y_step = 3
y_min = y_max - (packets) * y_step
# Form list of test packets and expected results
dvs_data = [
DVSPacket(x, y, y % 2) for x, y in zip(range(x_min, x_max, x_step),
range(y_max, y_min, -y_step))
]
exp_data = [spinn_2_to_7(x, SpiNNMode.SPINN_MODE_128) for x in dvs_data]
for dvs_pkt in dvs_data:
board_assert_equal(board.use_dvs(dvs_pkt), RESPONSES["success"])
# Trigger the MBED to start the speed test
mbed.trigger()
# Give period of time to forward to the MBED
time.sleep(packets * 0.05)
# Retrieve packets
(duration, count, rx_data) = mbed.get_spinn()
# Check results are identical
assert rx_data
assert len(rx_data) == len(exp_data)
assert len(rx_data) == count
for exp, rxp in zip(rx_data, exp_data):
assert exp.data == rxp.data
# Check duration is reasonable - packets times 15ms
assert duration < len(exp_data) * 15000
log.info("Test for %d packets took %lfs with %lfs per packet" %
(len(exp_data), duration / 1000000.0, duration /
(1000000.0 * packets)))
def test_single_packet(mbed, board, log):
"""Test that DVS packet sent to board is sent to MBED correctly"""
# Trigger the MBED to ensure state is correct
mbed.trigger()
# Ensure board is in correct mode
board_assert_equal(board.set_mode_spinn(SpiNNMode.SPINN_MODE_128.value),
RESPONSES["success"])
# Send a DVS packet to the board
dvs_pkt = DVSPacket(10, 30, 1)
board_assert_equal(board.use_dvs(dvs_pkt), RESPONSES["success"])
pkt = spinn_2_to_7(dvs_pkt, SpiNNMode.SPINN_MODE_128)
# Give a brief period of time to forward to the MBED
time.sleep(0.1)
# Retrieve packets from MBED
(_, _, rx_pkt) = mbed.get_spinn()
# Check results are identical
assert rx_pkt
for rxp in rx_pkt:
board_assert_isinstance(rxp, SpiNNPacket)
log.info("Got packet data: {}".format([hex(x) for x in rx_pkt[0].data]))
log.info("Calculated data: {}".format([hex(x) for x in pkt.data]))
board_assert_equal(pkt.data, rx_pkt[0].data)
def test_sim_many_packets(mbed):
"""Tests that sending many packets, each 10ms apart, gives a duration"""
# Ensure we are triggered
mbed.trigger()
# Construct packets
pkts = []
pkts += [spinn_2_to_7(DVSPacket(10, 20, 1), SpiNNMode.SPINN_MODE_128)]
pkts += [spinn_2_to_7(DVSPacket(43, 19, 1), SpiNNMode.SPINN_MODE_128)]
pkts += [spinn_2_to_7(DVSPacket(131, 0, 1), SpiNNMode.SPINN_MODE_128)]
pkts += [spinn_2_to_7(DVSPacket(85, 67, 1), SpiNNMode.SPINN_MODE_128)]
pkts += [spinn_2_to_7(DVSPacket(127, 127, 1), SpiNNMode.SPINN_MODE_128)]
for pkt in pkts:
mbed.send_sim(pkt)
time.sleep(0.01)
# Retrieve all packets and check their contents and total duration
(duration, _, rx_pkts) = mbed.get_spinn()
assert duration
# Check duration is +/- 40ms
assert (len(pkts) - 4) * 10000 <= duration <= (len(pkts) + 4) * 10000
assert rx_pkts
for true_pkt, rx_pkt in zip(pkts, rx_pkts):
assert true_pkt.data == rx_pkt.data
def test_trigger(mbed):
"""Tests that triggering the MBED allows values to be captured"""
mbed.trigger()
# Send a simulated packet
mbed.send_sim(spinn_2_to_7(DVSPacket(10, 20, 1), SpiNNMode.SPINN_MODE_128))
# Check that packet is returned
(_, _, packet) = mbed.get_spinn()
assert packet
def test_wait(mbed):
"""Tests that telling the MBED to wait doesn't log values"""
mbed.wait()
# Send a simulated packet
mbed.send_sim(spinn_2_to_7(DVSPacket(10, 20, 1), SpiNNMode.SPINN_MODE_128))
# Check that nothing is recorded
(_, _, packets) = mbed.get_spinn()
assert not packets
def test_empty_spinn(mbed):
"""Tests that no DVS packets sent to board means no SpiNNaker results"""
# Note that test is flawed as no bytes returned gives the same result
# as only a carriage return returned. This merely checks that there is
# nothing in the buffer waiting to be sent
(duration, count, packets) = mbed.get_spinn()
assert duration == 0
assert count == 0
assert not packets
def test_wait_trigger(mbed):
"""Tests that triggering after a wait allows capture"""
# Initial wait command
mbed.wait()
# Send a simulated packet
mbed.send_sim(spinn_2_to_7(DVSPacket(10, 20, 1), SpiNNMode.SPINN_MODE_128))
# Check that nothing is recorded
(_, _, packets) = mbed.get_spinn()
assert not packets
# Trigger recording again
mbed.trigger()
# Send a simulated packet
mbed.send_sim(spinn_2_to_7(DVSPacket(10, 20, 1), SpiNNMode.SPINN_MODE_128))
# Check that packet is returned
(_, _, packet) = mbed.get_spinn()
assert packet
def test_sim_spinn(mbed, log):
"""Tests that a single SpiNNaker packet is sent back correctly"""
# Ensure we are triggered
mbed.trigger()
# Construct packet
pkt = spinn_2_to_7(DVSPacket(10, 20, 1), SpiNNMode.SPINN_MODE_128)
# Send simulated packet
mbed.send_sim(pkt)
# Retrieve packet and check
(_, _, rx_pkt) = mbed.get_spinn()
assert rx_pkt
log.info("Got packet %s", rx_pkt[0].data)
log.info("Expected %s", pkt.data)
assert rx_pkt[0].data == pkt.data
def test_sim_duration(mbed):
"""Tests that sending two packets roughly 100ms apart gives a duration"""
# Ensure we are triggered
mbed.trigger()
# Construct packet
pkt = spinn_2_to_7(DVSPacket(10, 20, 1), SpiNNMode.SPINN_MODE_128)
# Send simulated packet twice
mbed.send_sim(pkt)
time.sleep(0.1)
mbed.send_sim(pkt)
# Retrieve packet and check
(duration, _, _) = mbed.get_spinn()
assert duration
# Check duration is +/- 40ms
assert 60000 <= duration <= 140000