1try:
2    from pyb import CAN
3
4    CAN(2)
5except (ImportError, ValueError):
6    print("SKIP")
7    raise SystemExit
8
9# Testing rtr messages
10bus2 = CAN(2, CAN.LOOPBACK, extframe=True)
11while bus2.any(0):
12    bus2.recv(0)
13bus2.setfilter(0, CAN.LIST32, 0, (1, 2), rtr=(True, True))
14bus2.setfilter(1, CAN.LIST32, 0, (3, 4), rtr=(True, False))
15bus2.setfilter(2, CAN.MASK32, 0, (16, 16), rtr=(False,))
16bus2.setfilter(2, CAN.MASK32, 0, (32, 32), rtr=(True,))
17
18bus2.send("", 1, rtr=True)
19print(bus2.recv(0))
20bus2.send("", 2, rtr=True)
21print(bus2.recv(0))
22bus2.send("", 3, rtr=True)
23print(bus2.recv(0))
24bus2.send("", 4, rtr=True)
25print(bus2.any(0))
26