arduino array overflow leads to no longer connecting to pc

Development Tools IDE 1.x
1

i uploaded a new version of a program to my arduino, now it is no longer recognized by the pc.

when i plug it in, a windows notification pos up saying "usb device not recognized", and the arduino does not appear in Tools/Port.

i think the reason is that i am overflowing an array in my program, which has to cause the arduino to no longer respond.

obviously, the reset button on the arduino only restearts the problematic program

is there a way to "clear" or hardreset the arduino?

using arduino 1.6.12 on aduino micro with fastLED library

full uploaded code with the overflow in the third loop:

#include <FastLED.h>
#define NUM_LEDS 60
#define DATA_PIN 6
#define BRIGHTNESS 16
#define COLOR_ORDER GRB

CRGB leds[NUM_LEDS];
uint8_t hue1 = 0;
uint8_t hueDelta = 1;

void setup() {
  FastLED.addLeds<WS2812B, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);

  FastLED.setBrightness(BRIGHTNESS);
}

void loop() {
  hue1 += hueDelta;
  uint8_t hue2 = hue1 + 85;
  uint8_t hue3 = hue1 - 85;
  
  int thirdNumLeds = NUM_LEDS / 3;

  for(int i = 0; i < thirdNumLeds; i++){
    int hue = hueLerp(hue1, hue2, i*255/thirdNumLeds);
    leds[i] = CHSV(hue, 255, 255);
  }
  for(int i = 0; i < thirdNumLeds; i++){
    int hue = hueLerp(hue2, hue3, i*255/thirdNumLeds);
    leds[i+thirdNumLeds] = CHSV(hue, 255, 255);
  }
  for(int i = 0; i < thirdNumLeds*3; i++){
    int hue = hueLerp(hue3, hue1, i*255/thirdNumLeds);
    leds[i+thirdNumLeds*2] = CHSV(hue, 255, 255);
  }
  
  FastLED.show();
  delay(60);
}
uint8_t hueLerp(uint8_t a, uint8_t b, int lerp){ // lerp is from 0 to 255
 int d = b-a;       //difference from a to b
 //if(d > 128) d -= 256; //make sure to lerp over the short "side"
 //if(d < -128) d += 256;//so we do not lerp from 0 to 255 over 128
 int result = a * 255 + d * lerp;
 return result / 255;
}
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spycatcher2k:
If you told us what type of Arduino you have, Their MAY be a way to get you up and running easily.

its an arduino micro

Edit: board model micro R3, if that is more specific / helpful

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(deleted)

5

awesome! thanks.

it took me several times to get the timing right, as it is a short timeframe before he starts the program.

so i needed to doubletap-reset shortly before compiling is finished and uploading starts.

if i reset him too early, he would start the programm, and loose the serial port connection before uploading, resulting in a "no board at port5" error.

but now its working again! thanks