Ini
[env:esp32-c3-devkitm-1]
platform = espressif32
board = esp32-c3-devkitm-1
framework = arduino
monitor_speed = 115200
lib_deps = fastled/FastLED@^3.7.0
build_flags = -DARDUINO_USB_CDC_ON_BOOT=1

Cpp
#include <Arduino.h>
#include <FastLED.h>
#include <NimBLEDevice.h>

constexpr uint8_t LED_PIN=10, NUM_LEDS=100;
constexpr uint8_t BTN[6]={0,1,3,4,5,6};
constexpr uint8_t BRIGHTNESS_CAP=85; // 85/255 * 100 * 60mA ≈ 2.0A worst-case RGB white; conservative below 4A electrical limit
constexpr uint32_t DEBOUNCE_MS=25;
CRGB leds[NUM_LEDS];
bool stable[6]={1,1,1,1,1,1}, lastRaw[6]={1,1,1,1,1,1};
uint32_t changedAt[6]={0};

void setup(){
  Serial.begin(115200);
  WiFi.mode(WIFI_OFF); // include WiFi.h if Wi-Fi API is enabled in selected Arduino core
  btStop();            // reset radio state before NimBLE init if supported by core
  for(uint8_t p:BTN) pinMode(p,INPUT); // external pull-ups fitted
  FastLED.addLeds<WS2812B,LED_PIN,GRB>(leds,NUM_LEDS);
  FastLED.setBrightness(BRIGHTNESS_CAP);
  FastLED.setMaxPowerInVoltsAndMilliamps(5,4000); // aggregate 20 W cap
  NimBLEDevice::init("LED-Tube-C3");
  auto *server=NimBLEDevice::createServer();
  auto *svc=server->createService("12345678-1234-1234-1234-1234567890ab");
  svc->createCharacteristic("12345678-1234-1234-1234-1234567890ac",NIMBLE_PROPERTY::READ|NIMBLE_PROPERTY::WRITE)->setValue("ready");
  svc->start(); NimBLEDevice::getAdvertising()->addServiceUUID(svc->getUUID()); NimBLEDevice::startAdvertising();
  fill_solid(leds,NUM_LEDS,CRGB::Black); FastLED.show();
}
void loop(){
  uint32_t now=millis();
  for(int i=0;i<6;i++){
    bool r=digitalRead(BTN[i]);
    if(r!=lastRaw[i]){lastRaw[i]=r;changedAt[i]=now;}
    if((now-changedAt[i])>=DEBOUNCE_MS && stable[i]!=r){stable[i]=r;if(!r){leds[i]=CRGB::White;FastLED.show();}}
  }
  delay(1);
}

Depending on Arduino-ESP32 release, include `` and omit btStop() if it conflicts with NimBLE startup. The hardware shutdown/charge inhibit must not depend on this firmware.

1. Confirm hardware charge inhibit is inactive.
2. Initialize serial diagnostics.
3. Keep Wi-Fi disabled.
4. Configure buttons and ADC.
5. Initialize FastLED power limiter before enabling patterns.
6. Start BLE GATT service and advertising.