6cac2d275d
Implemented according to API docs in a parent comment. Adds new multi_extmod/machine_can_* tests which pass when testing between NUCLEO_G474RE, NUCLEO_H723ZG and PYBDV11. This work was mostly funded through GitHub Sponsors. Signed-off-by: Angus Gratton <angus@redyak.com.au>
45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
# Test machine.CAN(1) and machine.CAN(2) using loopback
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#
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# Single device test, assumes support for loopback and no connections to the CAN pins
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#
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# This test is ported from tests/ports/stm32/pyb_can2.py
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try:
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from machine import CAN
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CAN(2, 125_000)
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except (ImportError, ValueError):
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print("SKIP")
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raise SystemExit
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import time
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# Setting up each CAN peripheral independently is deliberate here, to catch
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# catch cases where initialising CAN2 breaks CAN1
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can1 = CAN(1, 125_000, mode=CAN.MODE_LOOPBACK)
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can1.set_filters([(0x100, 0x700, 0)])
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can2 = CAN(2, 125_000, mode=CAN.MODE_LOOPBACK)
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can2.set_filters([(0x000, 0x7F0, 0)])
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# Drain any old messages in RX FIFOs
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for can in (can1, can2):
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while can.recv():
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pass
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for id, can in ((1, can1), (2, can2)):
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print("testing", id)
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# message1 should only receive on can1, message2 on can2
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can.send(0x123, b"message1", 0)
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can.send(0x003, "message2", 0)
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time.sleep_ms(10)
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did_recv = False
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while res := can.recv():
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did_recv = True
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print(hex(res[0]), bytes(res[1]), res[2], res[3])
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if not did_recv:
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print("no rx!")
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print("done")
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