feat(rmt): Solve neopixel issue#9906
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if neopixelWrite() is used from different tasks/isr_callbacks, it may result in a concurrency problem and many detach/attach calls in sequence, but not in synch. This commit avoids initializing the neopixel GPIO again.
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Test Results 56 files 56 suites 5m 18s ⏱️ Results for commit 75ba8bb. ♻️ This comment has been updated with latest results. |
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Memory usage test (comparing PR against master branch)The table below shows the summary of memory usage change (decrease - increase) in bytes and percentage for each target.
Click to expand the detailed deltas report [usage change in BYTES]
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P-R-O-C-H-Y
approved these changes
Jun 20, 2024
me-no-dev
reviewed
Jun 20, 2024
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| // allocate the rmt bus object and sets all fields to NULL | ||
| rmt_bus_handle_t bus = (rmt_bus_handle_t)heap_caps_calloc(1, sizeof(struct rmt_obj_s), MALLOC_CAP_DEFAULT); | ||
| bus = (rmt_bus_handle_t)heap_caps_calloc(1, sizeof(struct rmt_obj_s), MALLOC_CAP_DEFAULT); |
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if bus was not NULL, would you not leak it here?
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No... It was already released by detach.
me-no-dev
approved these changes
Jun 20, 2024
lucasssvaz
approved these changes
Jun 20, 2024
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Description of Change
If
neopixelWrite()is used from different tasks / isr_callbacks, it may result in a concurrency problem because of many detach/attach calls in sequence, but not in synch.This commit avoids initializing the neopixel GPIO again, after a first use.
It also improves a lot the response time of
neopixelWrite().It still allows to change RMT pin configuration or pin function correctly.
Tests scenarios
Tested using ESP32-S3. Please check the code from #9903
Related links
Fix #9903