512 is max length for variable length Characteristics, not fixed #81
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adafruit-adabot
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May 15, 2020
Updating https://github.com/adafruit/Adafruit_CircuitPython_BNO055 to 5.0.1 from 5.0.0: > Merge pull request adafruit/Adafruit_CircuitPython_BNO055#49 from russmac/master Updating https://github.com/adafruit/Adafruit_CircuitPython_DPS310 to 1.1.3 from 1.1.2: > Merge pull request adafruit/Adafruit_CircuitPython_DPS310#6 from taradiddles/master Updating https://github.com/adafruit/Adafruit_CircuitPython_INA219 to 3.4.2 from 3.4.1: > Merge pull request adafruit/Adafruit_CircuitPython_INA219#19 from colindgrant/powerdown-constant-spelling Updating https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO to 3.2.0 from 3.1.3: > Merge pull request adafruit/Adafruit_CircuitPython_AdafruitIO#35 from brentru/add-cellular-example Updating https://github.com/adafruit/Adafruit_CircuitPython_BLE to 6.1.4 from 6.1.3: > Merge pull request adafruit/Adafruit_CircuitPython_BLE#81 from dhalbert/max_length Updating https://github.com/adafruit/Adafruit_CircuitPython_Bundle/circuitpython_library_list.md to NA from NA: > Added the following libraries: Adafruit_CircuitPython_LIS331, Adafruit_CircuitPython_BLE_Adafruit
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I got this backwards initially:
variable-length characteristics can have up to 512 bytes of data.
Fixed length can have up to 510 bytes, on nRF.
See https://devzone.nordicsemi.com/f/nordic-q-a/12823/maximum-fixed-length-attribute-length-vs-maximum-variable-length-attribute-length.