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// remember last time data was received
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// remember last time data was received
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volatile uint8_t seconds_since_last_data = 0;
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volatile uint8_t seconds_since_last_data = 0;
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// store stats description in progmem to save space
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// store stats description in progmem to save space
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char stats_item_0[] PROGMEM = "max Altitude:";
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const char stats_item_0[] PROGMEM = "max Altitude:";
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char stats_item_1[] PROGMEM = "max Speed   :";
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const char stats_item_1[] PROGMEM = "max Speed   :";
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char stats_item_2[] PROGMEM = "max Distance:";
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const char stats_item_2[] PROGMEM = "max Distance:";
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char stats_item_3[] PROGMEM = "min voltage :";
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const char stats_item_3[] PROGMEM = "min Voltage :";
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char stats_item_4[] PROGMEM = "max time    :";
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const char stats_item_4[] PROGMEM = "max Time    :";
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char stats_item_5[] PROGMEM = "longitude   :";
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const char stats_item_5[] PROGMEM = "longitude   :";
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char stats_item_6[] PROGMEM = "latitude    :";
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const char stats_item_6[] PROGMEM = "latitude    :";
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char stats_item_7[] PROGMEM = "max current :";
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const char stats_item_7[] PROGMEM = "max current :";
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const char* stats_item_pointers[] PROGMEM = {stats_item_0, stats_item_1, stats_item_2,
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    stats_item_3, stats_item_4, stats_item_5, stats_item_6, stats_item_7};
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#if !(FCONLY)
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//char* directions[8] = {"NE", "E ", "SE", "S ", "SW", "W ", "NW", "N "};
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    //char arrowdir[8] = {218, 217, 224, 223, 222, 221, 220, 219};
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const char str_NE[] PROGMEM = "NE";
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const char str_E[] PROGMEM  = "E ";
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const char str_SE[] PROGMEM = "SE";
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const char str_S[] PROGMEM  = "S ";
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const char str_SW[] PROGMEM = "SW";
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const char str_W[] PROGMEM  = "W ";
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const char str_NW[] PROGMEM = "NW";
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const char str_N[] PROGMEM  = "N ";
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const char *directions[8] PROGMEM = {
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        str_NE,
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        str_E,
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        str_SE,
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        str_S,
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        str_SW,
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        str_W,
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        str_NW,
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char* stats_item_pointers[] PROGMEM = {stats_item_0, stats_item_1, stats_item_2,
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        str_N};
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    stats_item_3, stats_item_4, stats_item_5, stats_item_6, stats_item_7};
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#endif
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#endif // ends !(ALLCHARSDEBUG|(WRITECHARS != -1))
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#endif // ends !(ALLCHARSDEBUG|(WRITECHARS != -1))
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 * ##########################################################################*/
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 * ##########################################################################*/
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/**
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/**
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 * timer kicks in every 1000uS ^= 1ms
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 * timer kicks in every 1000uS ^= 1ms
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 */
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 */
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ISR(TIMER0_OVF_vect) {
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    OCR0 = 15; // preload
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ISR(TIMER0_COMP_vect) {
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    if (!timer--) {
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    if (!timer--) {
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        uptime++;
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        uptime++;
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        timer = 999;
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        timer = 999;
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        seconds_since_last_data++;
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        seconds_since_last_data++;
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#if !(ALLCHARSDEBUG|(WRITECHARS != -1))
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#if !(ALLCHARSDEBUG|(WRITECHARS != -1))
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    // init usart
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    // init usart
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    usart1_init();
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    usart1_init();
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    // set up timer
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    // set up timer
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        // CTC, Prescaler /64
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        TCCR0 = (1 << WGM01) | (0 << WGM00) | (0 << CS02) | (1 << CS01) | (1 << CS00);
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        TCNT0 = 0;
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        OCR0 = 250;
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    TCCR0 |= (1 << CS00) | (1 << CS01); // timer0 prescaler 64
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        // enable timer output compare interrupt
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    OCR0 = 15; // preload
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        TIMSK &= ~(1 << TOIE0);
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    TIMSK |= (1 << TOIE0); // enable overflow timer0
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        TIMSK |= (1 << OCIE0);
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        // SPI setup
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        // SPI setup
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    int16_t max_Distance = 0;
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    int16_t max_Distance = 0;
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    uint16_t max_FlyingTime = 0;
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    uint16_t max_FlyingTime = 0;
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    // flags from last round to check for changes
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    // flags from last round to check for changes
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    uint8_t old_MKFlags = 0;
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    char* directions[8] = {"NE", "E ", "SE", "S ", "SW", "W ", "NW", "N "};
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    //char arrowdir[8] = {218, 217, 224, 223, 222, 221, 220, 219};
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    uint8_t old_MKFlags = 0;
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#endif
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#endif
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    while (1) {
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    while (1) {