lcd_x_serial.c

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/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              礐/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File        : LCD_X_SERIAL_1.c
Purpose     : Port routines
----------------------------------------------------------------------
*/

#ifndef LCD_DELAY
  #define LCD_DELAY(x)
#endif

#ifndef LCD_SET_CS
  #define LCD_SET_CS()
  #define LCD_CLR_CS()
#endif

/*********************************************************************
*
*           Hardware configuration
*
**********************************************************************

  Needs to be adapted to your target hardware.
*/

/* Configuration example:

#define LCD_CLR_A0()      P7 &= ~(1<<1)
#define LCD_SET_A0()      P7 |=  (1<<1) 
#define LCD_CLR_RESET()   P7 &= ~(1<<2)
#define LCD_SET_RESET()   P7 |=  (1<<2) 
#define LCD_CLR_CLK()     P7 &= ~(1<<3)
#define LCD_SET_CLK()     P7 |=  (1<<3) 
#define LCD_CLR_DATA()    P7 &= ~(1<<4)
#define LCD_SET_DATA()    P7 |=  (1<<4) 
#define LCD_SET_DIR_OUT() P7D = 0xff
#define LCD_CLR_CS()      P7 &= ~(1<<0)      // Optional
#define LCD_SET_CS()      P7 |=  (1<<0)      // Optional
#define LCD_CLR_CS1()     P7 &= ~(1<<5)      // Optional (only for mult. controllers)
#define LCD_SET_CS1()     P7 |=  (1<<5)      // Optional (only for mult. controllers)
#define LCD_DELAY(ms)     GUI_Delay(ms)      // Optional

*/

/*********************************************************************
*
*           Initialisation
*
**********************************************************************
  This routine should be called from your application program
  to set port pins to their initial values
*/

void LCD_X_Init(void) {
  LCD_CLR_RESET();
  LCD_SET_DIR_OUT();
  LCD_SET_CS();
  #ifdef LCD_SET_CS1
    LCD_SET_CS1();
  #endif
  LCD_SET_A0();
  LCD_SET_RESET();
  LCD_SET_CLK();
  LCD_SET_DATA();
  LCD_DELAY(20);
  LCD_SET_RESET();
  LCD_DELAY(20);
}

/*********************************************************************
*
*           Send1 routine
*
**********************************************************************

  Usually, there is no need to modify this routine.
  It should be sufficient ot modify the low-level macros above or
  in a configuration file.
*/

/* Write 1 byte, MSB first */
static void Send1(U8 Data) {
  if ((Data >> 7) & 1) LCD_SET_DATA(); else LCD_CLR_DATA(); LCD_CLR_CLK(); LCD_SET_CLK();
  if ((Data >> 6) & 1) LCD_SET_DATA(); else LCD_CLR_DATA(); LCD_CLR_CLK(); LCD_SET_CLK();
  if ((Data >> 5) & 1) LCD_SET_DATA(); else LCD_CLR_DATA(); LCD_CLR_CLK(); LCD_SET_CLK();
  if ((Data >> 4) & 1) LCD_SET_DATA(); else LCD_CLR_DATA(); LCD_CLR_CLK(); LCD_SET_CLK();
  if ((Data >> 3) & 1) LCD_SET_DATA(); else LCD_CLR_DATA(); LCD_CLR_CLK(); LCD_SET_CLK();
  if ((Data >> 2) & 1) LCD_SET_DATA(); else LCD_CLR_DATA(); LCD_CLR_CLK(); LCD_SET_CLK();
  if ((Data >> 1) & 1) LCD_SET_DATA(); else LCD_CLR_DATA(); LCD_CLR_CLK(); LCD_SET_CLK();
  if ((Data >> 0) & 1) LCD_SET_DATA(); else LCD_CLR_DATA(); LCD_CLR_CLK(); LCD_SET_CLK();
}

/*********************************************************************
*
*           Controller 0
*
**********************************************************************

*/

/* Write to controller, with A0 = 1 */
void LCD_X_Write01(char Data) {
  LCD_CLR_CS();
  LCD_SET_A0();
  Send1(Data);
  LCD_SET_CS();
}

/* Write multiple bytes to controller, with A0 = 1 */
void LCD_X_WriteM01(char * pData, int NumBytes) {
  LCD_CLR_CS();
  LCD_SET_A0();
  for (; NumBytes; NumBytes--) {
    Send1(*pData++);
  }
  LCD_SET_CS();
}

/* Write to controller, with A0 = 0 */
void LCD_X_Write00(char Cmd) {
  LCD_CLR_CS();
  LCD_CLR_A0();
  Send1(Cmd);
  LCD_SET_CS();
}

/*********************************************************************
*
*           Controller 1 (optional)
*
**********************************************************************

*/

#ifdef LCD_SET_CS1
/* Write to controller, with A0 = 1 */
void LCD_X_Write11(char Data) {
  LCD_CLR_CS1();
  LCD_SET_A0();
  Send1(Data);
  LCD_SET_CS1();
}

/* Write multiple bytes to controller, with A0 = 1 */
void LCD_X_WriteM11(char * pData, int NumBytes) {
  LCD_CLR_CS1();
  LCD_SET_A0();
  for (; NumBytes; NumBytes--) {
    Send1(*pData++);
  }
  LCD_SET_CS();
}

/* Write to controller, with A0 = 0 */
void LCD_X_Write10(char Cmd) {
  LCD_CLR_CS1();
  LCD_CLR_A0();
  Send1(Cmd);
  LCD_SET_CS1();
}
#endif