New LED hardware driver: WLED Pixel Bus - #5704

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DedeHai wants to merge 239 commits into

DedeHai:WLEDpixelBus_PR

Commits on Mar 5, 2026

add initial version
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2279662
add initial header
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c2f4740

Commits on Mar 7, 2026

basic RMT version (WS2812) working on C3
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74b5ac5

Commits on Mar 8, 2026

add preliminary rgbw support
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bb2a3c5
fix rmt channels not awaiting finish TX of all channels
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77acf8a
fix bus type
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4ea2ee5

Commits on Mar 9, 2026

example of adding a new bus type (TM1815)
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d06ebca
simplify bus tracking
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17aa057

Commits on Mar 10, 2026

fixes for I2S (almost working) add SPI for C3 (untested)
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a8c91f3
revert unnecessary changes
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df9b94e
intermediate fixes
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83a9dfe
fix I2S crashes
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b34f3d3
increase RMT priority, remove debug
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ec22cae
fix RMT parallel sending
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6b8cfae
fix sequential I2S send
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7133dd3
fix compile errors for C3 SPI driver, enable driver selection for C3
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2a4c9b1

Commits on Mar 11, 2026

Commits on Mar 13, 2026

cleanup
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6a8c769
Fix LCD output for S3, now working
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2dee50a
adding 1MHz WS281x_fast timing
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1522d04
refactoring: move driver types to individual files
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eb8c405
fix RGB-CCT
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fecf36d
change I2S timing calculation to match 0hi period
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6fe6ed8
add dynamic RMT channel assignment to maximize the memory blocks and reduce interrupt frequency
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5d5d7ff
add ESP8266 support (untested)
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ed09c7b
fix file access glitch on C3
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959b69b
use all 16 available LCD channels on S3, optimize speed in 4stepencoding
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780fdeb
minor optimizations for LCD driver
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669221c
Fix output on ESP8266
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303ef48
attempt at fixing I2S on S2 but its not yet working
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0cfad46

Commits on Mar 15, 2026

rework of C3 SPI driver, still can cause deadlocks, stalls and crashes.
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2d1fe69
reformat to wled default indentation
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42f9813
add preliminary 3 step cadence encoding
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9958734
rename define
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2ed3b7f
adding dynamic timing, WIP
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6a1a8ff

Commits on Mar 16, 2026

Commits on Mar 17, 2026

add comments, todos and ifdef for RMT autochannel
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b2fbf08
adding per RMT bus timing, still glitchy but works...
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2dded7f

Commits on Mar 18, 2026

Commits on Mar 20, 2026

Commits on Mar 21, 2026

minor improvement, parallel spi still deadlocks
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70d154d

Commits on Mar 23, 2026

no deadlocks but still timeouts (issue was: have to await cmd.update)
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2bc958f
minor improvement, SPI timout still happens under heavy load
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c3d654f
add comment
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6ffae29

Commits on Mar 24, 2026

Commits on Mar 25, 2026

reserve mem block only if feature is enabled
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965e68b

Commits on Mar 28, 2026

rename high priority RMT driver to RrmtHiDriver
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eda4615
remove leftovers from IBus and use PixelBus everywhere
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8765848
remove bus limit, increase number of segments
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c5c5671
disable rmt memory mapping by default (except on C3)
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aac8840
Fix 16 channel I2S for ESP32
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c7897bc
allow more DMA buffers for I2S (circular list)
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4c340f4
massive speedup in I2S encoding, minor changes to RMT
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5a4a314
bugfixes
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eb0a32e
improvements to ESP8266 UART method: waste less ram (non working)
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5e90e22
fixes for uart method, partially working now
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4bf195a

Commits on Mar 30, 2026

renaming, adding optimizations in segment blending
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a0b3a59

Commits on Apr 1, 2026

Commits on Apr 2, 2026

Commits on Apr 3, 2026

Commits on Apr 4, 2026

Commits on Apr 5, 2026

fix indentation
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4ab69c4
rename bustype to busdriver
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191acca
improvements to color encoder
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3d018e2
add preliminary 16bit support
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925834c
add preliminary suffix support for SM16825
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35b13b4

Commits on Apr 6, 2026

use led types from const.h
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b0d6467
minor speed optimizations
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9709a0c
move gamma correction to bus level, make gamma table unity if not used
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7a22cfc
minor optimization
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54fdfab
add proper 16bit brightness encoding
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04cb246

Commits on Apr 7, 2026

better brightness handling path (optimization)
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a3d9727

Commits on Apr 10, 2026

make cct buffer optional - only use if segments differ in cct
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c6239e0

Commits on Apr 11, 2026

add initial support for special LED layouts, needs some refinement
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4048f44
remove WS281x fast type
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280db85

Commits on Apr 15, 2026

wait for the bus
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9007c87

Commits on Apr 17, 2026

Commits on Apr 23, 2026

Commits on Apr 24, 2026

fix ESP8266 I2S clock calculation (DMABus)
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8a1c2ca
fix edge cases, change comment
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ad26bcb

Commits on Apr 29, 2026

Commits on May 9, 2026

Merge branch 'main' into WLEDpixelBus_experimental
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406b770

Commits on May 12, 2026

make 16-parallel output modes a compile option (tested working on ESP32 only)
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89ec9de
cleanup and refactor
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22afd6e

Commits on May 13, 2026

fix SPI output for C3, S2, S3 (untested)
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0e68450

Commits on Jun 6, 2026

Merge branch 'main' into WLEDpixelBus_experimental
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19bf6af
add parallel bit bang driver, still buggy and incomplete but basics work
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94d1722
disable interrupts for the full BB sendout period to avoid stalling/flickering
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3e9263f
fix number of digital channels in UI, better support for ESP32
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309a032
add support for GPIOs > 31 on all ESPs
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04ecf78
fix macros
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d581fa9
use more IDF macros
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33ec35f
run BB buses befor other buses, remove magic numbers
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de83f28
allow more BB outputs on ESP8266
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82c4738

Commits on Jun 25, 2026

add parallel BB to ESP8266 (UI still needs updating)
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149becb
add UI restrictions for ESP8266 parallel BB
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d2c0c08
add todo
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25fc4e0
fix output inversion for all bus types
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eeb107d
fix custom bus timings: make unchangeable on subsequent parallel outputs
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0a8ef0e
bugfix and indentation
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198460d
fix alert
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94910a2
cleanup and proper SPI assignment on C3
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d41c449
revert test and debug
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be9d8bc
cleanup some comments
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fa68461
cleanup, add headers
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a264a5d
Merge branch 'main' into WLEDpixelBus_experimental
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2802468
update comment
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6443e78
fix merge conflics
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9f5058b
comment out debug prints
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b638e5d

Commits on Jun 26, 2026

fix compile error, remove debug outputs
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80014ac
fix include
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170ee7a
remove debug code
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ba363f8
comment out debug out
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cb47a8d
Fix compile error
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b61ccdc
remove debug variables
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4d44165
ifdef cleanup, remove BB for ESP32 and S3 (still needs UI fix)
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cfb2235
more ifdef fixes, fix UI for C3 and disabled BB
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0a09f46
fix S3 build
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71c7912
revert "optimization" to ABL, remove double gamma application
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b04947a
replace static members with struct in ESP8266 BB bus
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358d967
add struct fix also to regular BB, fix UI, add (non working) gamma to ESP8266 path
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22e1632

Commits on Jun 27, 2026

remove ESP8266 BB bus and extend BB bus to support ESP8266
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4c8cabc
remove debug output
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7e457c3

Commits on Jun 28, 2026

Commits on Jun 29, 2026

Improve I2S driver
DedeHai
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6ac48fe

Commits on Jun 30, 2026

port I2S improvements to LCD bus. should unify the two...
DedeHai
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6492137
merge I2S bus and LCD bus code, some cleanup
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4a44e9e

Commits on Jul 2, 2026

Commits on Jul 6, 2026

revert unnecessary changes
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2afc5eb

Commits on Jul 9, 2026

Commits on Jul 10, 2026

update comments
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5e6041f

Commits on Jul 11, 2026

add missing _inverted variable
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80a6f54
properly pass bus timings to UI and update when LT changes
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9f1aa03
fix cfg loading overriding special custom types
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25fae63
fix compile issue
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5ab790f
remove TODO
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1b24012
cleanup names and variable orders
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0be219c
fix SPI bus timing not propagating down to bus level
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728f8ae
bugfix in UI for ESP8266
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b8e9b53
add note to SPI, add some experimental code to APA012 (slightly faster)
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b02dc15
fix inverted support on ESP8266 (only non BB buses supported)
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fc49dde
use fast HW transfer in SPI output part 1
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1a8d0eb
use fast HW transfer in SPI output part 2
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ed50169
fix peek preview for APA102, rename setPixel to setPixelColor in bus
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73cb2e6

Commits on Jul 12, 2026

allow interrupts during bit bang output, some tuning, bugfixes in UI
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6137549

Commits on Jul 13, 2026

improvements to BB output and some cleanup
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9b1cbee
no need for defaults
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9bc9538
fix strip.setPixelColor() on ESP8266
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0e91c37

Commits on Jul 14, 2026

add WLED_DISABLE_GLOBAL_PIXELBUFFER, fix strip.setPixelColor()
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8cf9670

Commits on Jul 15, 2026

fix missing return value
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9924142

Commits on Jul 21, 2026

Commits on Jul 23, 2026

Commits on Jul 26, 2026

Commits on Jul 27, 2026

update todo list
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e854fa5
remove obsolete parameters from show()
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700ccf2
BB bus: retry to reduce frame tearing
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a65566e
update todo list, cleanup some comments, remove dead code
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2683a1e
fix PARLIO compile errors on ESP8266
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4c95a3d
fix PARLIO compile errors for C5 (untested)
DedeHai
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e6ae7d3
Merge branch 'main' into WLEDpixelBus_PR
DedeHai
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c552cb3
restrict custom bus UI input in parallel hardware modes, fix warning
DedeHai
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deee159

Commits on Jul 28, 2026

Commits on Jul 29, 2026

parallelSPI bus: get GDMA channel from API instead of hardcoding
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f20827e

Commits on Jul 31, 2026

some remark cleanup
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db587ec
update todo
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824960f
update header info
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4d1214c
remove comment
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e7aa9c7