/*
* Shift Register helper function
* shifts one array around one bit and appends value
*/
void shiftRegister(uint8_t *array, uint8_t value) {
int len = (WIDTH * HEIGHT / 8) - 1;
for(int i = 0; i < len; i++) {
array[i] = (array[i] >> 1) | ((array[i+1] & 1) << 7);
}
array[len] = (array[len] >> 1) | (value > 0 ? 1 << 7: 0);
}