C6 experiments - Githubissues

softhack007 commented 1 week ago

This is a first, very experimental support for the ESP32-C6 chip. It compiles, but nothing tested on the hardware yet.

Its intended for WLED/MM core developers, to understand better where the differences are. If you don't consider yourself a "core developer", then please ignore this PR and do something meaningful 😛

⚠️ no PWM support yet - so you can't use analog LEDs ⚠️ NeoPixelBus drivers are running in "BitBang" mode, so don't attach more than just a handful of addressable LEDs. ⚠️ Audioreadctive not supported yet, due to massive changes in I2S API

Currently some libraries are not compiling with Arduino Core 3.0.x, so i've forked these and made a few minimal patches to allow compiling. Also I had to make a "no FastLED" version of FastLED, because the clockless RMT driver of fastLED is causing crashes at startup - even when all outputs are managed by NeoPixelBus -> E (423) rmt(legacy): CONFLICT! driver_ng is not allowed to be used with the legacy driver.

softhack007 commented 1 week ago

FastLED bugs out very early.

abort() was called at PC 0x4206c3a1 on core 0
Core  0 register dump:
MEPC    : 0x40803362  RA      : 0x4080770c  SP      : 0x4087e150  GP      : 0x4080cd40  
TP      : 0x00000000  T0      : 0x37363534  T1      : 0x7271706f  T2      : 0x33323130  
S0/FP   : 0x4087e17c  S1      : 0x4087e160  A0      : 0x4087e17c  A1      : 0x4087e15e  
A2      : 0x00000000  A3      : 0x4087e1a9  A4      : 0x00000001  A5      : 0x4081e000  
A6      : 0x00000000  A7      : 0x76757473  S2      : 0x42129000  S3      : 0x40818a74  
S4      : 0x42000000  S5      : 0x40802fcc  S6      : 0x00040020  S7      : 0x000f7b40  
S8      : 0x0002d2e0  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x6e6d6c6b  T4      : 0x6a696867  T5      : 0x66656463  T6      : 0x62613938  
MSTATUS : 0x00001881  MTVEC   : 0x40800001  MCAUSE  : 0x00000007  MTVAL   : 0x00000000  
MHARTID : 0x00000000

Stack memory:
4087e150: 0x00001800 0x0000000c 0x00000000 0x40800030 0x36303234 0x31613363 0x00000000 0x4080f4dc
  #0  0x40800030 in _vector_table at ??:?
  #1  0x4080f4dc in __global_pointer$ at ??:?

4087e170: 0x4087e160 0x4080f4f8 0x4087e15c 0x726f6261 0x20292874 0x20736177 0x6c6c6163 0x61206465
  #0  0x4080f4f8 in __global_pointer$ at ??:?

4087e190: 0x43502074 0x34783020 0x63363032 0x20316133 0x63206e6f 0x2065726f 0x00000030 0x42090000
  #0  0x42090000 in esp_netif_dhcpc_stop_api at esp_netif_lwip.c.obj:?

4087e1b0: 0x42129000 0x4212c55c 0x4212c5ac 0x4206c3a4 0xffff0000 0x00000000 0x00700000 0x42071902
  #0  0x4206c3a4 in check_rmt_legacy_driver_conflict at rmt_legacy.c.obj:?
  #1  0x42071902 in esp_rtc_get_time_us at ??:?

4087e1d0: 0x00040020 0x40802fcc 0x42000000 0x42100000 0x0000004d 0x00000001 0x0000004d 0x40803140
  #0  0x40802fcc in call_start_cpu0 at ??:?
  #1  0x42100000 in _flash_rodata_dummy_start at ??:?
  #2  0x40803140 in call_start_cpu0 at ??:?

4087e1f0: 0xffff0000 0x4212d2ff 0x420f7b5f 0x02625a00 0xffff0000 0x4212d2ff 0x420f7b5f 0x4086f5fc
  #0  0x420f7b5f in intr_handler_set at ??:?
  #1  0x420f7b5f in intr_handler_set at ??:?

4087e210: 0x00000000 0x00100000 0x00010020 0x00040020 0x42100020 0x42000020 0x0002d2e0 0x000f7b40
  #0  0x42000020 in atexit at .pio/libdeps/esp32c6dev_8MB/FastLED/src/FastLED.cpp:254

4087e230: 0x00000000 0x00000000 0x00000000 0x40880000 0x00002f08 0x4004b05c 0x0000ffff 0xffffffff
4087e250: 0x00000000 0x4087e3a0 0x00000000 0x4086f85e 0xc2919723 0x00010000 0x00200000 0x00010000
4087e270: 0x300206e9 0x40802fcc 0x000000ee 0x0000000d 0x00ffff00 0x01000000 0x42100020 0x0002d2e0
  #0  0x40802fcc in call_start_cpu0 at ??:?

4087e290: 0x40800000 0x00002d10 0x42000020 0x000f7b40 0x40802d10 0x00009828 0x4080c540 0x000035c0
  #0  0x40800000 in _vector_table at ??:?
  #1  0x42000020 in atexit at .pio/libdeps/esp32c6dev_8MB/FastLED/src/FastLED.cpp:254
  #2  0x40802d10 in spi_flash_os_yield at spi_flash_os_func_app.c.obj:?
  #3  0x4080c540 in ?? at /builds/idf/crosstool-NG/.build/src/newlib-git-ff0b7d93/newlib/libc/include/time.h:138

4087e2b0: 0x50002000 0x00000004 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e2d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e2f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00010020 0x0003d308
4087e310: 0x00040020 0x00137b68 0x00141398 0x00144960 0x00000000 0x00000000 0x00000000 0x00000000
4087e330: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00134990 0x00000000
4087e350: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e370: 0x00002f08 0x4004b05c 0x0000ffff 0x40880000 0x00000000 0x0000005a 0x00002f10 0x4086c478
4087e390: 0x9dc8da6f 0xfad63171 0x00000000 0x00000000 0x0000e000 0x00002000 0x00000000 0x00000000
4087e3b0: 0x00000000 0x00000000 0x00010000 0x00200000 0x00210000 0x00200000 0x00000000 0x00000000
4087e3d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e3f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e410: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e430: 0x00000000 0x00000000 0x00000002 0x00000000 0x00000000 0x0000005a 0x00002f10 0x4001b1c0
4087e450: 0x5d39474b 0x31656642 0x910381c0 0x00000000 0x92f8f710 0x00000000 0x00010000 0x300203e9
4087e470: 0x4086c410 0x40875728 0x000000f8 0x000000ee 0x0000000d 0x00ffff00 0x01000000 0x42002f10
  #0  0x42002f10 in mode_chase_flash_random() at wled00/FX.cpp:1072

4087e490: 0x7533885e 0x114b9cce 0xfb8ba4e6 0xd8d6a372 0x323b98bb 0x73177650 0xd7144909 0xc1e25a97
4087e4b0: 0xe106aa86 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e4d0: 0x00000000 0x4087e5f0 0x00000101 0x00000002 0x114b9cce 0xfb8ba4e6 0xd8d6a372 0x323b98bb
4087e4f0: 0x73177650 0xd7144909 0xc1e25a97 0xe106aa86 0x00000000 0x00000000 0x00000000 0x00000000
4087e510: 0x00000000 0x00000000 0x00000000 0x00000000 0x86ea7240 0x00000140 0x00000000 0x5a000000

softhack007 commented 1 week ago

Update: its still mysterious, however something to do with RMT 🤔

E (423) rmt(legacy): CONFLICT! driver_ng is not allowed to be used with the legacy driver

E (423) rmt(legacy): CONFLICT! driver_ng is not allowed to be used with the legacy driver

abort() was called at PC 0x420a3635 on core 0
Core  0 register dump:
MEPC    : 0x40803e0a  RA      : 0x4080975c  SP      : 0x4087e140  GP      : 0x40811ce0  
TP      : 0x00000000  T0      : 0x37363534  T1      : 0x7271706f  T2      : 0x33323130  
S0/FP   : 0x4087e16c  S1      : 0x4087e16c  A0      : 0x4087e178  A1      : 0x4087e15a  
A2      : 0x00000000  A3      : 0x4087e1a5  A4      : 0x00000001  A5      : 0x40823000  
A6      : 0x00000000  A7      : 0x76757473  S2      : 0x421a9000  S3      : 0x4081e194  
S4      : 0x42160000  S5      : 0x42000000  S6      : 0x40803a38  S7      : 0x0015cdb0  
S8      : 0x00074780  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x6e6d6c6b  T4      : 0x6a696867  T5      : 0x66656463  T6      : 0x62613938  
MSTATUS : 0x00001881  MTVEC   : 0x40800001  MCAUSE  : 0x00000007  MTVAL   : 0x00000000  
MHARTID : 0x00000000  

Stack memory:
4087e140: 0x00000000 0x00000000 0x4087e16c 0x4080ea0e 0x40803a38 0x42000000 0x42160030 0x4081498c
  #0  0x4080ea0e in __assert_func at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/newlib/assert.c:34
  #1  0x40803a38 in rv_utils_dbgr_is_attached at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/riscv/include/riscv/rv_utils.h:203
      (inlined by) esp_cpu_dbgr_is_attached at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_hw_support/include/esp_cpu.h:506
      (inlined by) call_start_cpu0 at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_system/port/cpu_start.c:307
  #2  0x4081498c in __global_pointer$ at ??:?

4087e160: 0x4087e16c 0x408149a8 0x4087e158 0x61303234 0x35333633 0x28010200 0x726f6261 0x20292874
  #0  0x408149a8 in __global_pointer$ at ??:?

4087e180: 0x20736177 0x6c6c6163 0x61206465 0x43502074 0x34783020 0x33613032 0x20353336 0x63206e6f
4087e1a0: 0x2065726f 0x00000030 0x42180000 0x4eb09137 0x20001090 0x421b5ad4 0x421b5b24 0x420a3638
  #0  0x420a3638 in check_rmt_legacy_driver_conflict at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/driver/deprecated/rmt_legacy.c:1380 (discriminator 3)

4087e1c0: 0x421a9000 0x421b5ad4 0x421b5b30 0x420a95f4 0x0000004d 0x00000001 0x0000004d 0x420a8cc2
  #0  0x420a95f4 in do_global_ctors at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_system/startup.c:203
      (inlined by) start_cpu0_default at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_system/startup.c:486
  #1  0x420a8cc2 in esp_cache_err_int_init at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_system/port/soc/esp32c6/cache_err_int.c:39

4087e1e0: 0x0000004d 0x00000001 0x0000004d 0x40803ba6 0x43000000 0x421d479f 0x4215cdcf 0x42000000
  #0  0x40803ba6 in call_start_cpu0 at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_system/port/cpu_start.c:706
  #1  0x4215cdcf in _flash_rodata_dummy_start at ??:?

4087e200: 0x43000000 0x421d479f 0x4215cdcf 0x4086f834 0x5218a20c 0x00160000 0x00010020 0x00090020
  #0  0x4215cdcf in _flash_rodata_dummy_start at ??:?

4087e220: 0x42160020 0x42000020 0x00074780 0x0015cdb0 0x00010000 0x00200000 0x00000000 0x40880000
  #0  0x42160020 in ?? at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_app_format/esp_app_desc.c:15
  #1  0x42000020 in CRGB::operator+=(CRGB const&) at .pio/libdeps/esp32c6dev_8MB/FastLED/src/pixeltypes.h:268

4087e240: 0x00003958 0x4004b05c 0x0000ffff 0xffffffff 0x00000000 0x4087e3a0 0x00000000 0x4086fae0
4087e260: 0xd293b723 0x00010000 0x00200000 0x00010000 0x300206e9 0x40803a38 0x000000ee 0x0000000d
  #0  0x40803a38 in rv_utils_dbgr_is_attached at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/riscv/include/riscv/rv_utils.h:203
      (inlined by) esp_cpu_dbgr_is_attached at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_hw_support/include/esp_cpu.h:506
      (inlined by) call_start_cpu0 at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_system/port/cpu_start.c:307

4087e280: 0x00ffff00 0x01000000 0x42160020 0x00074780 0x40800000 0x0000b870 0x42000020 0x0015cdb0
  #0  0x42160020 in ?? at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_app_format/esp_app_desc.c:15
  #1  0x40800000 in _vector_table at ??:?
  #2  0x42000020 in CRGB::operator+=(CRGB const&) at .pio/libdeps/esp32c6dev_8MB/FastLED/src/pixeltypes.h:268
4087e2a0: 0x4080b870 0x00005c68 0x408114e0 0x00003d10 0x50000000 0x00000004 0x00000000 0x00000000
  #0  0x4080b870 in xTaskPriorityInherit at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/FreeRTOS-Kernel/tasks.c:5221
  #1  0x50000000 in ?? at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp_hw_support/sleep_modes.c:247

4087e2c0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e2e0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e300: 0x00000000 0x00000000 0x00010020 0x000847a8 0x00090020 0x001ecdd8 0x001f2a48 0x001f6760
4087e320: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e340: 0x00000000 0x00000000 0x001e6790 0x151bebf1 0x818fb06d 0xadd2df6e 0x98db8280 0x5218a20c
4087e360: 0xc2d7f6c1 0x7c26ddbe 0x325cbccd 0x00000000 0xffffffff 0x00000010 0x0000000a 0x40880000
4087e380: 0x00000000 0x000000cf 0x00003960 0x4086c476 0x8d88da2f 0xfa563071 0x00000000 0x00000000
4087e3a0: 0x0000e000 0x00002000 0x00000000 0x00000000 0x00000000 0x00000000 0x00010000 0x00200000
4087e3c0: 0x00210000 0x00200000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e3e0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e400: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e420: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000002 0x00000000
4087e440: 0x60002000 0x00000100 0x00000020 0x4001b1c0 0x5939474b 0x31e5e6ca 0x910381c0 0x00000000
4087e460: 0x9278f710 0x00000000 0x00010000 0x300203e9 0x4086c410 0x40875728 0x00000594 0x000000ee
4087e480: 0x0000000d 0x00ffff00 0x01000000 0x42003960 0x7533885e 0x88a0ebf5 0xb4069687 0x84dc75ea
  #0  0x42003960 in std::vector<Segment, std::allocator<Segment> >::operator[](unsigned int) at c:\tools\pio_pkg\toolchain-riscv32-esp\riscv32-esp-elf\include\c++\12.2.0\bits/stl_vector.h:1124
      (inlined by) mode_random_chase() at wled00/FX.cpp:1791

4087e4a0: 0xe59e24f9 0x758a850e 0x6a0a0365 0x49a7c3ac 0x01d3171d 0x00000000 0x00000000 0x00000000
4087e4c0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x4087e5f0 0x00000101 0x00000002
4087e4e0: 0x88a0ebf5 0xb4069687 0x84dc75ea 0xe59e24f9 0x758a850e 0x6a0a0365 0x49a7c3ac 0x01d3171d
4087e500: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4087e520: 0x69676572 0x775f6332 0x65746972 0x73616d5f 0x6d695f6b 0x00006c70 0x00000000 0xcf000000

ELF file SHA256: 5fd475acd8a7ccfc

Rebooting...

Edit: in practice any firmware that still uses the "old" RMT driver might crash, because arduino-esp32 v3.0.x itself links in the new RMT driver -> legacy driver conflict. Looks like a workaround - in some cases - is to make sure that RGB_BUILTIN is not defined.

softhack007 commented 1 week ago

its booting into WLED 🥳 🚀 Seems that FastLED was causing all the troubles -> -DFASTLED_NO_FASTLED did the trick.

=========== Before Setup Start ===========
Chip Info:
------------------------------------------
  Model             : ESP32-C6
  Package           : 0       
  Revision          : 0       
  Cores             : 1       
  Frequency         : 160 MHz 
  Embedded Flash    : No      
  Embedded PSRAM    : No      
  2.4GHz WiFi       : Yes     
  Classic BT        : No      
  BT Low Energy     : Yes     
  IEEE 802.15.4     : Yes
------------------------------------------  
INTERNAL Memory Info:
------------------------------------------  
  Total Size        :   393304 B ( 384.1 KB)
  Free Bytes        :   357732 B ( 349.3 KB)
  Allocated Bytes   :    29148 B (  28.5 KB)
  Minimum Free Bytes:   357568 B ( 349.2 KB)
  Largest Free Block:   335860 B ( 328.0 KB)
------------------------------------------  
Flash Info:
------------------------------------------  
  Chip Size         :  8388608 B (8 MB)     
  Block Size        :    65536 B (  64.0 KB)
  Sector Size       :     4096 B (   4.0 KB)
  Page Size         :      256 B (   0.2 KB)
  Bus Speed         : 40 MHz
  Bus Mode          : QIO
------------------------------------------
Partitions Info:
------------------------------------------
                nvs : addr: 0x00009000, size:    20.0 KB, type: DATA, subtype: NVS
            otadata : addr: 0x0000E000, size:     8.0 KB, type: DATA, subtype: OTA
               app0 : addr: 0x00010000, size:  2048.0 KB, type:  APP, subtype: OTA_0
               app1 : addr: 0x00210000, size:  2048.0 KB, type:  APP, subtype: OTA_1
             spiffs : addr: 0x00410000, size:  3968.0 KB, type: DATA, subtype: SPIFFS
           coredump : addr: 0x007F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Jun 14 2024 13:30:20
  ESP-IDF Version   : v5.1.4-51-g442a798083-dirty
  Arduino Version   : 3.0.1
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : Espressif ESP32-C6-DevKitC-1
  Arduino Variant   : esp32c6
  Core Debug Level  : 4
  Arduino Runs Core : 0
  Arduino Events on : 0
  Arduino USB Mode  : 1
  CDC On Boot       : 0
============ Before Setup End ============

---WLED 0.14.1-b31.38 2405241 INIT---
 WLEDMM_0.14.1-b31.38 1-C6_8MB, build 2405241.
CPU:   ESP32-C6 rev.0, 1 core(s), 160MHz.
CPU    Restart due to power-on event (code 1). Core#0 power-on (1).
FLASH: 8MB, Mode 0, speed 80MHz.

Mounting FS ...
Mount FS succeeded.
done Mounting FS; 3956 kB free.

(BitBang) Successfully inited strip 0 (len 30) with type 22 and pin 2 (itype 21)

Usermods setup ...

Ada

GPIO    | Assigned to           | Info
--------|-----------------------|------------
i/o   0   Button
i/o   1   ./.
i/o   2   LEDs (digital)          (default) LED pin
i/o   3   ./.
i/o   4   ./.
i/o   5   ./.
i/o   6   ./.
i/o   7   ./.
i/o   8   ./.
i/o   9   ./.
i/o  10   ./.
i/o  11   ./.
i/o  14   ./.
i/o  15   ./.
i/o  16   ./.                     Serial TX
i/o  17   ./.                     Serial RX
i/o  18   ./.
i/o  19   ./.
i/o  20   ./.
i/o  21   ./.
i/o  22   ./.
i/o  23   ./.
WLED initialization done.

Ada

=========== After Setup Start ============
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   393304 B ( 384.1 KB)
  Free Bytes        :   353280 B ( 345.0 KB)
  Allocated Bytes   :    32064 B (  31.3 KB)
  Minimum Free Bytes:   353176 B ( 344.9 KB)
  Largest Free Block:   335860 B ( 328.0 KB)
------------------------------------------
GPIO Info:
------------------------------------------
  GPIO : BUS_TYPE[bus/unit][chan]
  --------------------------------------  
     0 : GPIO
     2 : GPIO
    16 : UART_TX[0]
    17 : UART_RX[0]
============ After Setup End =============

softhack007 commented 1 week ago

ESPHome seem to have their own version of AsynTCP and AsyncWebServer, maintained regularly. Might be worth to give them a try on -C6.

esphome/AsyncTCP (for ESP32 variants only) https://github.com/esphome/AsyncTCP/pull/11
esphome/ESPAsyncWebServer https://github.com/esphome/ESPAsyncWebServer/pull/35

ewoudwijma commented 1 week ago

@softhack007 , didn’t WLED AC updated their version of espasyncwebserved recently ? Maybe the same as esphime uses?

softhack007 commented 2 days ago

Espressif has declared commonly used network API's as "deprecated" - WiFiClient, WiFiServer, WiFiUdp and WiFiClientSecure There are replacements, however with more differences than just new names 😢 https://github.com/espressif/arduino-esp32/commit/ad1de0b37c8208aab4d0fee60d13c3330a3fd789

another area where lots of rework will be needed, just to keep existing features working on new chips like -C6. I'm not amused.

softhack007 commented 2 days ago

Known problem: IP address is always shown as "0.0.0.0" in info page -> might also cause some connection problems in WS or Web UI.

NetworkClient class in ESP32 Arduino Core v3.0.1 always returns IPAddress(0,0,0,0) via localIP() method (might get fixed in core v3.0.2)

MoonModules / WLED

C6 experiments #138