bootloader_enter(); 

    // Init SPI busses

    spi_init();

    // Init OLED over SPI

    ssd1306_init();

    ssd1306_clearscreen();

    // Default settings 

    set.val.boottobrew = 0;

    set.val.temp_units = TEMP_UNITS_FAHRENHEIT;

    set.val.k_p = 10;

    set.val.k_d = 1;

    set.val.ignore_tc_error = 0;

    set.val.setpoint_brew = 70;

    set.val.setpoint_steam = 70;

    // Default status

    status.temp = 0;

    status.temp_frac = 0;

    status.state_resume = 0;

    status.state = STATE_IDLE;

    status.setpoint = 70;

    status.pid_enabled = 0;