lcd_x_8080.c

来自「uCGUI」· C语言 代码 · 共 109 行

/*************************************************************************************************************
                                                   uC/GUI
                                               嵌入式通用图形软件
File        : LCD_X_8080.c
Purpose     : Port routines
*************************************************************************************************************/

/*************************************************************************************************************
*           Hardware configuration
  Needs to be adopted to your target hardware.
*************************************************************************************************************/

/*************************************************************************************************************
Configuration example:

#define Chip_30600
#include <IOM16C.H>

#define LCD_CLR_A0()      P8 &= ~(1<<0)
#define LCD_SET_A0()      P8 |=  (1<<0)
#define LCD_CLR_WR()      P8 &= ~(1<<1)
#define LCD_SET_WR()      P8 |=  (1<<1)
#define LCD_CLR_RD()      P8 &= ~(1<<2)
#define LCD_SET_RD()      P8 |=  (1<<2)
#define LCD_CLR_RESET()   P8 &= ~(1<<3)
#define LCD_SET_RESET()   P8 |=  (1<<3)
#define LCD_CLR_CS()      P8 &= ~(1<<4)
#define LCD_SET_CS()      P8 |=  (1<<4)
#define LCD_DATA_IN       P7
#define LCD_DATA_OUT      P7
#define LCD_SET_DIR_IN()  P7D = 0
#define LCD_SET_DIR_OUT() P7D = 0xff
#define LCD_DELAY(ms)     GUI_Delay(ms)
*************************************************************************************************************/

/*************************************************************************************************************
*           High level LCD access macros
  Usually, there is no need to modify these macros.
  It should be sufficient ot modify the low-level macros
  above.
*************************************************************************************************************/

#define LCD_X_READ()      \
  LCD_CLR_CS();           \
  LCD_CLR_RD();           \
  c = LCD_DATA_IN;        \
  LCD_SET_CS();           \
  LCD_SET_RD();           \
  return c

#define LCD_X_WRITE(data) \
  LCD_SET_DIR_OUT();      \
  LCD_DATA_OUT = data;    \
  LCD_CLR_CS();           \
  LCD_CLR_WR();           \
  LCD_SET_WR();           \
  LCD_SET_CS();           \
  LCD_SET_DIR_IN()    

/*************************************************************************************************************
*           Initialisation
  This routine should be called from your application program to set port pins to their initial values
*************************************************************************************************************/
void LCD_X_Init(void) 
{
  LCD_SET_CS();
  LCD_SET_RD();
  LCD_SET_WR();
  LCD_CLR_RESET();
  LCD_DELAY(2);
  LCD_SET_RESET();
}

/*************************************************************************************************************
*           Access routines
  Usually, there is no need to modify these routines. It should be sufficient ot modify the low-level macros
  above.
*************************************************************************************************************/
/* Write to controller, with A0 = 0 */
void LCD_X_Write00(char c) 
{
  LCD_CLR_A0();
  LCD_X_WRITE(c);
}

/* Write to controller, with A0 = 1 */
void LCD_X_Write01(char c) 
{
  LCD_SET_A0();
  LCD_X_WRITE(c);
}

/* Read from controller, with A0 = 0 */
char LCD_X_Read00(void) 
{
  char c;
  LCD_CLR_A0();
  LCD_X_READ();
}

/* Read from controller, with A0 = 1 */
char LCD_X_Read01(void) 
{
  char c;
  LCD_SET_A0();
  LCD_X_READ();
}