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SPI read_passive_target timeout #24

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Merged
merged 3 commits into from
Jul 3, 2019
Merged

SPI read_passive_target timeout #24

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c44abc2
Sped up for the RaspberryPi SPI
tgikal Jun 28, 2019
3f75987
Fix SPI read_passive_target timeout
tgikal Jul 1, 2019
5c75384
Fix SPI read_passive_target timeout
tgikal Jul 3, 2019
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12 changes: 6 additions & 6 deletions adafruit_pn532/spi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -81,14 +81,14 @@ def _wait_ready(self, timeout=1):
status = bytearray([reverse_bit(_SPI_STATREAD), 0])

timestamp = time.monotonic()
while (time.monotonic() - timestamp) < timeout:
with self._spi as spi:
with self._spi as spi:
while (time.monotonic() - timestamp) < timeout:
time.sleep(0.02) # required
spi.write_readinto(status, status) #pylint: disable=no-member
if reverse_bit(status[1]) == 0x01: # LSB data is read in MSB
return True # Not busy anymore!
else:
time.sleep(0.01) # pause a bit till we ask again
if reverse_bit(status[1]) == 0x01: # LSB data is read in MSB
return True # Not busy anymore!
else:
time.sleep(0.01) # pause a bit till we ask again
# We timed out!
return False

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