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//ui.h //State machine state names #define NoPush 1 #define MaybePush 2 #define Pushed 3 #define MaybeNoPush 4 unsigned char PushState; //Macros #define Button_PORT PORTE #define Button_DDR DDRE #define Button_PIN PINE #define T3_Ovf ETIFR & (1<<2) //Overflow flag #define T3_Ovf_Clr ETIFR = ETIFR & ~(1<<2) #define T3_Reset TCNT3 = 0x00 //Button names, pin number #define Btn_Start (1<<0) #define Btn_Stop (1<<1) #define Btn_Vol_Up (1<<2) #define Btn_Vol_Dn (1<<3) /* when a button is depressed, the button number is stored in Current_Butnum when the button is released, New_Butnum is set. The main program must detect that New_Butnum is set and read Current_Butnum and reset New_Butnum */ #define Clr_Butnum New_Butnum = 0 #define Set_Butnum New_Butnum = 1 unsigned char Current_Butnum; unsigned char New_Butnum; unsigned char vol_attn_l, vol_attn_r;//DLA,DRA registers for STA013 //Prototypes void UI_Init(void); void debounce(void); |
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