Note: This function is here just for control demonstration as any intensity lower than maximum generates noise in audio due to PWM high frequency.įig. Search level: Take the user to another menu, showing High, Medium and Low menu items that are minimum levels required to select a station during a search.īacklit inten.: (Backlight intensity) Using the Left and Right buttons it's possible to change the LCD backlight intensity. 10 - Configuration and Stand by menu items
9 - Fine search and Register stations menu itemsĬonfiguration: Take the user to another menu, showing Search level and Backlight intensity menu items.įig. Register statn: (Register stations) When pressed Select over it, starts a scan that covers the whole FM band and register the found stations in an array in memory.įig. The audio is muted while searching to eliminate noise.įine search: When pressed Select, shows a screen similar to which is viewed pressing Search menu option, but this search is more fine grained because is done 0.1 MHz at a time. Search: When pressed Select, shows the current station and let the user search for a station using the buttons Left and Right in the key pad. You can see the Mute status indication in figure 7. Mute: It's a toggle function. Pressing Select once, mutes the radio and pressing Select again turn the audio on. Also, pressing left and right buttons navigate through stations stored in memory. At this state of the software, pressing the up and down buttons turn the volume up and down respectively.