#ifndef _CHARLCD_H
#define _CHARLCD_H
+#define LCD_FLAG_B 0x0004 /* Blink on */
+#define LCD_FLAG_C 0x0008 /* Cursor on */
+#define LCD_FLAG_D 0x0010 /* Display on */
+#define LCD_FLAG_F 0x0020 /* Large font mode */
+#define LCD_FLAG_N 0x0040 /* 2-rows mode */
+#define LCD_FLAG_L 0x0080 /* Backlight enabled */
+
enum charlcd_onoff {
CHARLCD_OFF = 0,
CHARLCD_ON,
};
+enum charlcd_shift_dir {
+ CHARLCD_SHIFT_LEFT,
+ CHARLCD_SHIFT_RIGHT,
+};
+
+enum charlcd_fontsize {
+ CHARLCD_FONTSIZE_SMALL,
+ CHARLCD_FONTSIZE_LARGE,
+};
+
+enum charlcd_lines {
+ CHARLCD_LINES_1,
+ CHARLCD_LINES_2,
+};
+
struct charlcd {
const struct charlcd_ops *ops;
const unsigned char *char_conv; /* Optional */
/**
* struct charlcd_ops - Functions used by charlcd. Drivers have to implement
* these.
- * @clear_fast: Clear the whole display and set cursor to position 0, 0.
- * Optional.
* @backlight: Turn backlight on or off. Optional.
* @print: Print one character to the display at current cursor position.
* The buffered cursor position is advanced by charlcd. The cursor should not
* wrap to the next line at the end of a line.
* @gotoxy: Set cursor to x, y. The x and y values to set the cursor to are
* previously set in addr.x and addr.y by charlcd.
+ * @home: Set cursor to 0, 0. The values in addr.x and addr.y are set to 0, 0 by
+ * charlcd prior to calling this function.
+ * @clear_display: Clear the whole display and set the cursor to 0, 0. The
+ * values in addr.x and addr.y are set to 0, 0 by charlcd after to calling this
+ * function.
+ * @init_display: Initialize the display.
+ * @shift_cursor: Shift cursor left or right one position.
+ * @shift_display: Shift whole display content left or right.
+ * @display: Turn display on or off.
+ * @cursor: Turn cursor on or off.
+ * @blink: Turn cursor blink on or off.
+ * @lines: One or two lines.
+ * @redefine_char: Redefine the actual pixel matrix of character.
*/
struct charlcd_ops {
- void (*clear_fast)(struct charlcd *lcd);
void (*backlight)(struct charlcd *lcd, enum charlcd_onoff on);
int (*print)(struct charlcd *lcd, int c);
- int (*gotoxy)(struct charlcd *lcd);
+ int (*gotoxy)(struct charlcd *lcd, unsigned int x, unsigned int y);
+ int (*home)(struct charlcd *lcd);
+ int (*clear_display)(struct charlcd *lcd);
+ int (*init_display)(struct charlcd *lcd);
+ int (*shift_cursor)(struct charlcd *lcd, enum charlcd_shift_dir dir);
+ int (*shift_display)(struct charlcd *lcd, enum charlcd_shift_dir dir);
+ int (*display)(struct charlcd *lcd, enum charlcd_onoff on);
+ int (*cursor)(struct charlcd *lcd, enum charlcd_onoff on);
+ int (*blink)(struct charlcd *lcd, enum charlcd_onoff on);
+ int (*fontsize)(struct charlcd *lcd, enum charlcd_fontsize size);
+ int (*lines)(struct charlcd *lcd, enum charlcd_lines lines);
+ int (*redefine_char)(struct charlcd *lcd, char *esc);
};
+void charlcd_backlight(struct charlcd *lcd, enum charlcd_onoff on);
struct charlcd *charlcd_alloc(void);
void charlcd_free(struct charlcd *lcd);