PyBoard CAN doesn't work?

[kamikaze]

When trying following code:

from pyb import CAN

can1 = CAN(1, CAN.NORMAL)
can2 = CAN(2, CAN.NORMAL)

can1.setfilter(0, CAN.LIST16, 0, (123, 124, 125, 126))
can2.setfilter(0, CAN.LIST16, 0, (123, 124, 125, 126))

can1.send('magic', 123)
can2.recv(0)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: [Errno 110] ETIMEDOUT

and after many send() calls I'm getting

OSError 16 which is device or resource busy.

I've tried to connect Y3-Y6 and Y4-Y5 (CAN1 - CAN2) directly. I've tried to connect with the following scheme of two transceivers: https://easyeda.com/kamikaze/CAN_bus_shield_for_PyBoard_v1_1-CusOLJ53N

for me it seems that something is wrong with the code, board or micropython... please help me to figure out )

[HenrikSolver]

Most likely there is nothing wrong with the pyboard or its firmware, so please close this issue and start a thread in the forum.

[kamikaze]

An issue is here for a reason...

http://forum.micropython.org/viewtopic.php?p=13368#p13368

Also can you provide a test which could confirm that "there is nothing wrong"? the only test I've found - is a LOOPBACK test, which is not the same as the real CAN bus test.

[kamikaze]

my fault, did wrong voltage connection. Sorry.