Add NXP LPC8xx (LPC845, LPC804) PlatformIO envs

platforms/platformio.lpc804.ini

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+; PlatformIO Project Configuration File
+;
+; Bare NXP LPC804M101 (no dev-kit-specific pin mapping).
+; Cortex-M0+ @ 15 MHz, 4 KB SRAM / 32 KB Flash.
+;
+; IMPORTANT: at 15 MHz the bit-bang clockless driver does NOT meet WS2812
+; protocol timing. To drive WS2812-class LEDs from an LPC804 you must opt
+; into the PLU (Programmable Logic Unit) fast path
+; (clockless_arm_lpc_plu.h) by uncommenting -DFASTLED_LPC_PLU below. The
+; PLU synthesizes the bitstream in the chip's 26-LUT hardware fabric.
+;
+; The platform package is NOT in the upstream PlatformIO registry. We use
+; the zackees/platform-nxplpc-arduino fork (adds the Arduino framework
+; binding via ArduinoCore-LPC8xx). The SHA below is pinned to match
+; FastLED master's own platformio.ini.
+
+[env:lpc804]
+platform = https://github.com/zackees/platform-nxplpc-arduino.git#2ee527ae80de98e9105329a7260edb003289dfda
+board = lpc804
+framework = arduino
+
+build_flags =
+    ; -DFASTLED_LPC_PLU   ; uncomment for WS2812-class LED output
+
+lib_deps =
+    FastLED

platforms/platformio.lpc845.ini

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+; PlatformIO Project Configuration File
+;
+; Bare NXP LPC845M301 (no dev-kit-specific pin mapping).
+; Cortex-M0+ @ 24 MHz, 16 KB SRAM / 64 KB Flash.
+;
+; FastLED uses the bit-bang clockless driver (clockless_arm_lpc.h /
+; m0clockless_c.h) by default. For the SCT+DMA fast path see the
+; lpc845brk env (-DFASTLED_LPC_PWM_DMA=1).
+;
+; The platform package is NOT in the upstream PlatformIO registry. We use
+; the zackees/platform-nxplpc-arduino fork (adds the Arduino framework
+; binding via ArduinoCore-LPC8xx). The SHA below is pinned to match
+; FastLED master's own platformio.ini.
+
+[env:lpc845]
+platform = https://github.com/zackees/platform-nxplpc-arduino.git#2ee527ae80de98e9105329a7260edb003289dfda
+board = lpc845
+framework = arduino
+
+lib_deps =
+    FastLED

platforms/platformio.lpc845brk.ini

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+; PlatformIO Project Configuration File
+;
+; NXP LPC845-BRK breakout — recommended starting point for LPC845.
+; Cortex-M0+ @ 24 MHz, 16 KB SRAM / 64 KB Flash.
+;
+; This env opts into the FastLED LPC845 fast path
+; (clockless_arm_lpc_pwm_dma.h — SCT + 3-channel DMA-to-GPIO). Drop the
+; FASTLED_LPC_PWM_DMA flag if you'd rather use the plain bit-bang driver.
+;
+; The platform package is NOT in the upstream PlatformIO registry. We use
+; the zackees/platform-nxplpc-arduino fork (adds the Arduino framework
+; binding via ArduinoCore-LPC8xx). The SHA below is pinned to match
+; FastLED master's own platformio.ini.
+
+[env:lpc845brk]
+platform = https://github.com/zackees/platform-nxplpc-arduino.git#2ee527ae80de98e9105329a7260edb003289dfda
+board = lpc845brk
+framework = arduino
+
+build_flags =
+    -DFASTLED_LPC_PWM_DMA=1
+
+lib_deps =
+    FastLED

platforms/platformio.lpcxpresso804.ini

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+; PlatformIO Project Configuration File
+;
+; NXP LPCXpresso804 development board (LPC804-based).
+; Cortex-M0+ @ 15 MHz, 4 KB SRAM / 32 KB Flash.
+;
+; IMPORTANT: same 15 MHz constraint as [env:lpc804]. To drive WS2812-class
+; LEDs you must opt into the PLU fast path (clockless_arm_lpc_plu.h) by
+; uncommenting -DFASTLED_LPC_PLU below — the plain bit-bang driver cannot
+; meet WS2812 timing at this clock speed.
+;
+; The platform package is NOT in the upstream PlatformIO registry. We use
+; the zackees/platform-nxplpc-arduino fork (adds the Arduino framework
+; binding via ArduinoCore-LPC8xx). The SHA below is pinned to match
+; FastLED master's own platformio.ini.
+
+[env:lpcxpresso804]
+platform = https://github.com/zackees/platform-nxplpc-arduino.git#2ee527ae80de98e9105329a7260edb003289dfda
+board = lpcxpresso804
+framework = arduino
+
+build_flags =
+    ; -DFASTLED_LPC_PLU   ; uncomment for WS2812-class LED output
+
+lib_deps =
+    FastLED

platforms/platformio.lpcxpresso845max.ini

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+; PlatformIO Project Configuration File
+;
+; NXP LPCXpresso845MAX development board (LPC845-based).
+; Cortex-M0+ @ 24 MHz, 16 KB SRAM / 64 KB Flash.
+;
+; FastLED uses the bit-bang clockless driver by default on this env.
+; To opt into the SCT+DMA fast path add: -DFASTLED_LPC_PWM_DMA=1
+;
+; The platform package is NOT in the upstream PlatformIO registry. We use
+; the zackees/platform-nxplpc-arduino fork (adds the Arduino framework
+; binding via ArduinoCore-LPC8xx). The SHA below is pinned to match
+; FastLED master's own platformio.ini.
+
+[env:lpcxpresso845max]
+platform = https://github.com/zackees/platform-nxplpc-arduino.git#2ee527ae80de98e9105329a7260edb003289dfda
+board = lpcxpresso845max
+framework = arduino
+
+lib_deps =
+    FastLED