2021-08-16
NFC, Python, Raspberrypi, Sensor
nfc raspberrypi read tag on-release, on-connect
on-release
ximport nfcimport time
def released (tag): print(tag) print('released!!') time.sleep(1) clf = nfc.ContactlessFrontend('usb')
while True: print('waiting...') result = clf.connect(rdwr={'on-release':released}) print('----------------------') print(result) print('scaned')
をやると, felicaを離した時に,
xxxxxxxxxxwaiting...Type3Tag ID=01010501b00ac30b PMM=03014b024f4993ff SYS=1234released!!
とでる.
"scaned"が出ないけど, felicaをつけて離してつけて離して...を繰り返すと
xxxxxxxxxxwaiting...Type3Tag ID=01010501b00ac30b PMM=03014b024f4993ff SYS=1234released!!waiting...Type3Tag ID=01010501b00ac30b PMM=03014b024f4993ff SYS=1234released!!waiting...Type3Tag ID=01010501b00ac30b PMM=03014b024f4993ff SYS=1234released!!waiting...Type3Tag ID=01010501b00ac30b PMM=03014b024f4993ff SYS=1234released!!
となるので, while trueは効いてる模様. ふむ...
on-connect, on-release
xxxxxxxxxximport nfcimport time
def connected (tag): print('connected!!') time.sleep(1) def released (tag): print('released!!') time.sleep(1) clf = nfc.ContactlessFrontend('usb')
rdwr_options={ 'on-connect':connected, 'on-release':released,}
while True: print('waiting...') #clf.connect(rdwr={'on-connect':connected, 'on-release':released}) clf.connect(rdwr=rdwr_options) print('scaned')
のようにon-connectとon-releaseを両方使用してみたが, つけて離してつけて離して...を繰り返しても
xxxxxxxxxxwaiting...connected!!scanedwaiting...connected!!scanedwaiting...connected!!
となるだけで, on-releaseが効かず....
rdwr_optionsを使用せずに,
xxxxxxxxxximport nfcimport time
def connected (tag): print('connected!!') time.sleep(1) def released (tag): print('released!!') time.sleep(1) clf = nfc.ContactlessFrontend('usb')
while True: print('waiting...') clf.connect(rdwr={'on-connect':connected, 'on-release':released}) print('scaned')
とやっても結果は同じ. ふむ....
