lcd_x_8bus.c

控制器为ST7529的液晶模块针对ucGUI的驱动

/*********************************Copyright(c)**********************************
**********************************千能电力**************************************
**--------------文件信息---------------------------------------------------
**文   件   名: LCD_X_8bus.c
**创   建   人: 杨林军
**创 建 日  期: 2008-3
**最 新 版  本: $Id$
**描        述: 
**--------------历史版本信息-----------------------------------------------
** 修改人:  杨林军
** 日　期:  
** 版  本： 
** 描　述:  
**-------------------------------------------------------------------------
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "bsp_globe.h"
#include "gpio.h"
#include "GUI_x.h"
#include "LCDConf.h"
/* Private typedef -----------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/

#define GPIO_LCD_CS     11  //p1.11  液晶CS使用的P口
#define GPIO_LCD_A0     0   //P1.0   液晶A0使用的P口

#define LCD_CLR_RESET()   ClrBitBusEnRl(BitResetLcd)     
#define LCD_SET_RESET()   SetBitBusEnRl(BitResetLcd) 
/*******************************************************************************
   如果液晶CS用CPU的物理CS脚控制，则把下面的宏改成
#define LCD_SET_CS()      //GPIO_SET_BIT(GPIO1, GPIO_LCD_CS)  
#define LCD_CLR_CS()      //GPIO_CLR_BIT(GPIO1, GPIO_LCD_CS)  
*******************************************************************************/
#define LCD_SET_CS()      //GPIO_SET_BIT(GPIO1, GPIO_LCD_CS)  
#define LCD_CLR_CS()      //GPIO_CLR_BIT(GPIO1, GPIO_LCD_CS)  

/*******************************************************************************
    如果液晶A0用CPU的物理地址线控制，则把下面的宏改成
#define LCD_SET_A0()      //GPIO_SET_BIT(GPIO1, GPIO_LCD_A0)   
#define LCD_CLR_A0()      //GPIO_CLR_BIT(GPIO1, GPIO_LCD_A0)   
*******************************************************************************/
#define LCD_SET_A0()      //GPIO_SET_BIT(GPIO1, GPIO_LCD_A0)   
#define LCD_CLR_A0()      //GPIO_CLR_BIT(GPIO1, GPIO_LCD_A0)

//#define ASSEMBAL      //汇编或C语言的选择开关
   
/* Private variables ---------------------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/* Interface functions -------------------------------------------------------*/

   
/*********************************************************************
*
*           Defaults
*
**********************************************************************
*/

#ifndef LCD_CLR_RW
  #define LCD_CLR_RW()
#endif
#ifndef LCD_SET_RW
  #define LCD_SET_RW()
#endif
#ifndef LCD_SET_CS0
  #define LCD_SET_CS0()
#endif
#ifndef LCD_SET_CS1
  #define LCD_SET_CS1()
#endif
#ifndef LCD_SET_CS2
  #define LCD_SET_CS2()
#endif

#ifndef LCD_SET_DIR_IN
  #define LCD_SET_DIR_IN()
#endif
#ifndef LCD_SET_DIR_OUT
  #define LCD_SET_DIR_OUT()
#endif



/*********************************************************************
*
*           Initialisation
*
**********************************************************************
  This routine should be called from your application program
  to set port pins to their initial values
  GPIO_LCD_CS配置成输入是因为现在这个管脚与CS连着，改版后需删掉这句
*/

void LCD_X_Init(void) {

  GPIO_Config(GPIO1, 1<<GPIO_LCD_A0, GPIO_OUT_PP);      //配置A0
  GPIO_Config(GPIO1, 1<<GPIO_LCD_CS, GPIO_IN_TRI_CMOS);
  LCD_CLR_RESET();
  GUI_X_Delay(1);
  LCD_SET_RESET();
  GUI_X_Delay(1);
  //LCD_CLR_CS();
}

/*********************************************************************
*
*           Access routines, controller 0
*
**********************************************************************
  Usually, there is no need to modify these routines.
  It should be sufficient ot modify the low-level macros
  above.
*/

/* Read from controller 0, with A0 = 0, CS1 = 0*/
char LCD_X_Read00(void) {
    char c;
    LCD_CLR_A0();
    LCD_CLR_CS();
    c = LCDPortCmd;
    LCD_SET_CS();
    LCD_SET_A0();
    return c;
}

/* Read from controller 0, with A0 = 1, CS1 = 0 */
char LCD_X_Read01(void) {
#ifdef ASSEMBAL
    u32 c;
    u32 addr = 0xE000400C;
    u32 gpiov;
    u32 lcddataadd = 0x6200F002;
    u32 cnt=1;
__asm
	{
        LDR     gpiov, [addr]
        ORR     gpiov,gpiov,1
        STR     gpiov,[addr]

        LOOP:
        SUBS 	cnt,cnt,#1
		BNE	 	LOOP

		LDRB 	c,[lcddataadd]			

        MOV    cnt,#2
        LOOP1:
        SUBS 	cnt,cnt,#1
		BNE	 	LOOP1

        BIC     gpiov,gpiov,1
        STR     gpiov,[addr]
	}
#endif
#ifndef ASSEMBAL
    char c;
    LCD_SET_A0();
    LCD_CLR_CS();
    c = LCDPortData;
    LCD_SET_CS();
    LCD_CLR_A0();
#endif
    
    return (u8)c;

}


/* Write CMD to controller 0, with A0 = 0, CS1 = 0*/
void LCD_X_Write00(char c) {
#ifdef ASSEMBAL
    u32 addr = 0xE000400C;
    u32 gpiov;
    u32 lcddataadd = 0x6200F000;

__asm
	{
        LDR     gpiov, [addr]
        BIC     gpiov,gpiov,1
        STR     gpiov,[addr]
        
        NOP                              //NOP的个数很关键
		STRB 	c,[lcddataadd]			
        
        ORR     gpiov,gpiov,1
        STR     gpiov,[addr]
	}
#endif

#ifndef ASSEMBAL
    LCD_CLR_A0();
    LCD_CLR_CS();
    LCDPortCmd = c;
    LCD_SET_CS();
    LCD_SET_A0();
#endif
}



/* Write DATA to controller 0, with A0 = 1, CS1 = 0 */
void LCD_X_Write01(char c) {
#ifdef ASSEMBAL
    u32 addr = 0xE000400C;
    u32 gpiov;
    u32 lcddataadd = 0x6200F002;
__asm
	{
        LDR     gpiov, [addr]
        ORR     gpiov,gpiov,1
        STR     gpiov,[addr]
        
        NOP
		STRB 	c,[lcddataadd]			
       
        BIC     gpiov,gpiov,1
        STR     gpiov,[addr]
	}
#endif

#ifndef ASSEMBAL
    LCD_SET_A0();
    LCD_CLR_CS();
    LCDPortData = c;
    LCD_SET_CS();
    LCD_CLR_A0();
#endif
}


/******************* (C) COPYRIGHT 千能电力 *****END OF FILE*******************/