mirror of https://github.com/commaai/panda.git
87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
import time
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from flaky import flaky
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from panda import Panda
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from panda.tests.hitl.helpers import time_many_sends
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def test_can_loopback(p):
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p.set_safety_mode(Panda.SAFETY_ALLOUTPUT)
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p.set_can_loopback(True)
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for bus in (0, 1, 2):
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# set bus 0 speed to 5000
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p.set_can_speed_kbps(bus, 500)
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# send a message on bus 0
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p.can_send(0x1aa, b"message", bus)
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# confirm receive both on loopback and send receipt
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time.sleep(0.05)
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r = p.can_recv()
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sr = [x for x in r if x[2] == 0x80 | bus]
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lb = [x for x in r if x[2] == bus]
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assert len(sr) == 1
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assert len(lb) == 1
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# confirm data is correct
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assert 0x1aa == sr[0][0] == lb[0][0]
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assert b"message" == sr[0][1] == lb[0][1]
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def test_reliability(p):
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MSG_COUNT = 100
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p.set_safety_mode(Panda.SAFETY_ALLOUTPUT)
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p.set_can_loopback(True)
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p.set_can_speed_kbps(0, 1000)
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addrs = list(range(100, 100 + MSG_COUNT))
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ts = [(j, b"\xaa" * 8, 0) for j in addrs]
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for _ in range(100):
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st = time.monotonic()
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p.can_send_many(ts)
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r = []
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while len(r) < 200 and (time.monotonic() - st) < 0.5:
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r.extend(p.can_recv())
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sent_echo = [x for x in r if x[2] == 0x80]
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loopback_resp = [x for x in r if x[2] == 0]
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assert sorted([x[0] for x in loopback_resp]) == addrs
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assert sorted([x[0] for x in sent_echo]) == addrs
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assert len(r) == 200
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# take sub 20ms
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et = (time.monotonic() - st) * 1000.0
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assert et < 20
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@flaky(max_runs=6, min_passes=1)
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def test_throughput(p):
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# enable output mode
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p.set_safety_mode(Panda.SAFETY_ALLOUTPUT)
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# enable CAN loopback mode
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p.set_can_loopback(True)
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for speed in [10, 20, 50, 100, 125, 250, 500, 1000]:
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# set bus 0 speed to speed
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p.set_can_speed_kbps(0, speed)
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time.sleep(0.05)
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comp_kbps = time_many_sends(p, 0)
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# bit count from https://en.wikipedia.org/wiki/CAN_bus
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saturation_pct = (comp_kbps / speed) * 100.0
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assert saturation_pct > 80
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assert saturation_pct < 100
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print("loopback 100 messages at speed %d, comp speed is %.2f, percent %.2f" % (speed, comp_kbps, saturation_pct))
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# this will fail if you have hardware serial connected
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def test_serial_debug(p):
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_ = p.serial_read(Panda.SERIAL_DEBUG) # junk
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p.call_control_api(0x01)
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assert p.serial_read(Panda.SERIAL_DEBUG).startswith(b"NO HANDLER")
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