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Add checking if the new node is not the same as original mode in the setmode function #47

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Add checking if the new node is not the same as original mode in the setmode function #47

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34ae60b
Add checking if the new node is not the same as original mode
vava24680 Jul 18, 2020
1d9f2d5
Add tests on the repeated mode setup
vava24680 Jul 26, 2020
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2 changes: 1 addition & 1 deletion RPi/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1046,7 +1046,7 @@ def setmode(mode):
BOARD - Use Raspberry Pi board numbers
BCM - Use Broadcom GPIO 00..nn numbers
"""
if _State.mode != UNKNOWN:
if _State.mode != UNKNOWN and _State.mode != mode:
raise ValueError("A different mode has already been set!")

if mode != BCM and mode != BOARD:
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10 changes: 10 additions & 0 deletions tests/test_gpio.py
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Expand Up @@ -41,6 +41,16 @@ def test_is_iterable():
assert GPIO_DEVEL.is_iterable(i) is True


@pytest.mark.parametrize('GPIO_MODE', [GPIO.BCM, GPIO.BOARD])
def test_setmode_remain_silent_in_same_mode(GPIO_MODE):
GPIO_DEVEL.Reset()
GPIO.setmode(GPIO_MODE) # Set a mode first
try:
GPIO.setmode(GPIO_MODE) # Expect there is not exception being raised
except ValueError:
pytest.fail('Failed to due double setup')


def test_setmode_raise_double_setup_exception():
GPIO_DEVEL.Reset()
with pytest.raises(Exception):
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