;**************************** ;* * ;* Comandos * ;* * ;**************************** ; clear display 00000001 LCD_CLEAR_DISPLAY equ 0x01 ; return home 0000001x LCD_RETURN_HOME equ 0x02 ; entry mode set 000001is ; i decrement/increment DDRAM address (0/1) ; s scroll (1) LCD_ENTRY_MODE_SET equ 0x04 LCD_NO_SCROLL equ 0x00 LCD_SCROLL equ 0x01 LCD_DEC_CURSOR_POS equ 0x00 LCD_INC_CURSOR_POS equ 0x02 ; display on/off control 00001dcb ; d display on/off (1/0) ; c cursor on/off (1/0) ; b blinking on/off (1/0) LCD_DISPLAY_CONTROL equ 0x08 LCD_BLINKING_OFF equ 0x00 LCD_BLINKING_ON equ 0x01 LCD_CURSOR_OFF equ 0x00 LCD_CURSOR_ON equ 0x02 LCD_DISPLAY_OFF equ 0x00 LCD_DISPLAY_ON equ 0x04 ; cursor display/shift 0001srxx ; s move cursor/display shift (0/1) ; r shift left/shift right (0/1) LCD_SHIFT equ 0x10 LCD_SHIFT_LEFT equ 0x00 LCD_SHIFT_RIGHT equ 0x04 LCD_MOVE_CURSOR equ 0x00 LCD_SHIFT_DISPLAY equ 0x08 ; function set 001dnfxx ; d 4/8 bit interface (0/1) ; n 1/2 lines (0/1) ; f font size 5x8/5x11 (0/1) LCD_FUNCTION_SET equ 0x20 LCD_SMALL_FONT equ 0x00 LCD_BIG_FONT equ 0x04 LCD_1_LINE equ 0x00 LCD_2_LINES equ 0x08 LCD_4BIT_INTERFACE equ 0x00 LCD_8BIT_INTERFACE equ 0x10 ; set cgram address 01000000 LCD_SET_CGRAM equ 0x40 ; set display data ram address 10000000 LCD_SET_DDRAM equ 0x80 LCD_ROW_0 equ 0x00 LCD_ROW_1 equ 0x40 LCD_ROW_2 equ 0x14 LCD_ROW_3 equ 0x54 LCD_COL_0 equ 0x00 LCD_COL_1 equ 0x01 LCD_COL_2 equ 0x02 LCD_COL_3 equ 0x03 LCD_COL_4 equ 0x04 LCD_COL_5 equ 0x05 LCD_COL_6 equ 0x06 LCD_COL_7 equ 0x07 LCD_COL_8 equ 0x08 LCD_COL_9 equ 0x09 LCD_COL_10 equ 0x0a LCD_COL_11 equ 0x0b LCD_COL_12 equ 0x0c LCD_COL_13 equ 0x0d LCD_COL_14 equ 0x0e LCD_COL_15 equ 0x0f LCD_COL_16 equ 0x10 LCD_COL_17 equ 0x11 LCD_COL_18 equ 0x12 LCD_COL_19 equ 0x13 ;**************************** ;* * ;* Definiciones auxiliares * ;* * ;**************************** ;Dev_Tcyc equ 250 ; 20Mhz Dev_Tcyc equ 1250 ; 4 Mhz Inner_delay equ (256*3 + 3)*Dev_Tcyc LCD_INIT_DELAY equ 15000000/Inner_delay LCD_Eb equ (1<