Method sumBytes

include/VectorDisplay.h:319–325

    }

    uint8_t sumBytes(void* data, int length) {
        uint8_t* p = (uint8_t*)data;
        uint8_t s = 0;
        while(length-- > 0)
            s += *p++;
        return s;
    }
    void display(bool a = false) {
    }