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Looks good to me. Thanks for figuring this out and finding the fix!
I tested successfully on Fun House 9.2.8 and 10.0.0-beta.2
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Updating https://github.com/adafruit/Adafruit_CircuitPython_DotStar to 2.2.18 from 2.2.17: > Merge pull request adafruit/Adafruit_CircuitPython_DotStar#71 from dhalbert/spi-lock-managment Updating https://github.com/adafruit/Adafruit_CircuitPython_EPD to 2.15.0 from 2.14.0: > Merge pull request adafruit/Adafruit_CircuitPython_EPD#94 from adafruit/UC8197 > Merge pull request adafruit/Adafruit_CircuitPython_EPD#95 from adafruit/ssd1883 > Merge pull request adafruit/Adafruit_CircuitPython_EPD#93 from adafruit/ssd1680_fix > Merge pull request adafruit/Adafruit_CircuitPython_EPD#90 from AJMansfield/patch-1 Updating https://github.com/adafruit/Adafruit_CircuitPython_JD79661 to 1.0.1 from 1.0.0: > Merge pull request adafruit/Adafruit_CircuitPython_JD79661#1 from adafruit/cleanup Updating https://github.com/adafruit/Adafruit_CircuitPython_TLV320 to 1.2.1 from 1.1.0: > Merge pull request adafruit/Adafruit_CircuitPython_TLV320#11 from samblenny/fix-example-link > Merge pull request adafruit/Adafruit_CircuitPython_TLV320#10 from samblenny/volume-fixes Updating https://github.com/adafruit/Adafruit_CircuitPython_FruitJam to 1.2.0 from 0.5.0: > Merge pull request adafruit/Adafruit_CircuitPython_FruitJam#13 from FoamyGuy/volume_api > Merge pull request adafruit/Adafruit_CircuitPython_FruitJam#14 from mikeysklar/ntp-helper > Merge pull request adafruit/Adafruit_CircuitPython_FruitJam#12 from mikeysklar/headphone-speaker > Merge pull request adafruit/Adafruit_CircuitPython_FruitJam#11 from adafruit/TheKitty-patch-1 > Merge pull request adafruit/Adafruit_CircuitPython_FruitJam#9 from relic-se/request_display_config-default > Merge pull request adafruit/Adafruit_CircuitPython_FruitJam#8 from relic-se/any_button_pressed-fix Updating https://github.com/adafruit/Adafruit_CircuitPython_Bundle/circuitpython_library_list.md to NA from NA: > Added the following libraries: Adafruit_CircuitPython_UC8253
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FunHouse()object, and then trying to do some network activity.Before this fix, the
DotStarobject grabbed theSPIlock forever. This is a problem on Espressif boards, which use a FreeRTOS mutex as the lock. See adafruit/circuitpython#10561 (comment) for details.The fix is only to grab the
SPIlock when actually writing. We could do this withadafruit_bus_device, but we don't need other aspects of that library, and we can save space just by doing the locking in the two places where it's needed.There isn't a reason to test that
self._spi.try_lock()succeeds or fails, since it should always succeed. TheSPIobject is not used by anyone else.Tested on a FunHouse. It fixes the crash described in adafruit/circuitpython#10520. I also tested to make sure the DotStars are still functional.