KTD253_MAX_RATIO
current_ratio = KTD253_MAX_RATIO;
current_ratio = KTD253_MAX_RATIO;
current_ratio = KTD253_MAX_RATIO;
max_brightness = KTD253_MAX_RATIO;
if (max_brightness > KTD253_MAX_RATIO) {
max_brightness = KTD253_MAX_RATIO;