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Possible fix for #11 #12

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Merged
merged 3 commits into from
Aug 6, 2019
Merged

Possible fix for #11 #12

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878888f
provide writeto_then_readfrom only if needed
caternuson Jul 25, 2019
9db81d6
Always provide writeto_then_readfrom
tannewt Aug 6, 2019
bad25bc
lint
caternuson Aug 6, 2019
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5 changes: 4 additions & 1 deletion adafruit_tca9548a.py
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,9 @@ class TCA9548A_Channel():
def __init__(self, tca, channel):
self.tca = tca
self.channel_switch = bytearray([1 << channel])
# provide only if needed
if hasattr(self.tca.i2c, 'writeto_then_readfrom'):
setattr(self, 'writeto_then_readfrom', self.writeto_then_readfrom_passthru)

def try_lock(self):
"""Pass thru for try_lock."""
Expand All @@ -82,7 +85,7 @@ def writeto(self, address, buffer, **kwargs):
raise ValueError("Device address must be different than TCA9548A address.")
return self.tca.i2c.writeto(address, buffer, **kwargs)

def writeto_then_readfrom(self, address, buffer_out, buffer_in, **kwargs):
def writeto_then_readfrom_passthru(self, address, buffer_out, buffer_in, **kwargs):
"""Pass thru for writeto_then_readfrom."""
#In linux, at least, this is a special kernel function call
if address == self.tca.address:
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