lcd_low.c

ARM_CORTEX-M3应用实例开发详解光盘

/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name          : lcd.c
* Author             : MCD Application Team
* Version            : V1.1.1
* Date               : 06/13/2008
* Description        : This file includes the LCD driver for AM-240320L8TNQW00H 
*                     (LCD_ILI9320) Liquid Crystal Display Module of STM3210E-EVAL
*                      board.
********************************************************************************
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/

#include "lcd_low.h"
#include "aux_lib.h"

#define Delay(x)    sleep_us((x) * 10000)
/* Private typedef -----------------------------------------------------------*/
typedef struct
{
  vu16 LCD_REG;
  vu16 LCD_RAM;
} LCD_TypeDef;

/* Note: LCD /CS is CE4 - Bank 4 of NOR/SRAM Bank 1~4 */
#define LCD_BASE        ((u32)(0x60000000 | 0x0C000000))
#define LCD             ((LCD_TypeDef *) LCD_BASE)


#define HSCREEN1    1  /* 1:定义为竖屛显示方式1 */
#define HSCREEN2    2
#define VSCREEN1    4
#define VSCREEN2    8

#define SCREENTYPE  VSCREEN1

/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/                              
/* Private variables ---------------------------------------------------------*/
  
/* Private function prototypes -----------------------------------------------*/
static void LCD_CtrlLinesConfig(void);
static void LCD_FSMCConfig(void);
/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : STM3210E_LCD_Init
* Description    : Initializes the LCD.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void STM3210E_LCD_Init(void)
{ 
    vu16 dummy = 0;
/* Configure the LCD Control pins --------------------------------------------*/
    LCD_CtrlLinesConfig();

/* Configure the FSMC Parallel interface -------------------------------------*/
    LCD_FSMCConfig();
    Delay(5); /* delay 50 ms */

//  LCD_WriteReg(R227, 0x3008);   // Set internal timing
//  LCD_WriteReg(R231, 0x0012); // Set internal timing
//  LCD_WriteReg(R239, 0x1231);   // Set internal timing
    LCD_WriteReg(R1  , 0x0000); // set SS and SM bit
//  LCD_WriteReg(R2  , 0x0700); // set 1 line inversion
    LCD_WriteReg(R2  , 0x0000);
    /* Set GRAM write direction and BGR = 1 */
    /* I/D=01 (Horizontal : increment, Vertical : decrement) */
    /* AM=1 (address is updated in vertical writing direction) */
    LCD_WriteReg(R3  , 0x0030);//0x1018);
//  LCD_WriteReg(R3  , 0x1030);   // set GRAM write direction and BGR=1.
    LCD_WriteReg(R4  , 0x0000);   // Resize register
    LCD_WriteReg(R8  , 0x0307);   // set the back porch and front porch
    LCD_WriteReg(R9  , 0x002F);   // set non-display area refresh cycle ISC[3:0]
    LCD_WriteReg(R10 , 0x0000);   // FMARK function
    LCD_WriteReg(R12 , 0x0000); // RGB interface setting
    LCD_WriteReg(R13 , 0x0001);   // Frame marker Position
    LCD_WriteReg(R15 , 0x0000); // RGB interface polarity
    /**************Power On sequence ****************/
    LCD_WriteReg(R16 , 0x0000);   // SAP, BT[3:0], AP, DSTB, SLP, STB
    LCD_WriteReg(R17 , 0x0007);   // DC1[2:0], DC0[2:0], VC[2:0]
    LCD_WriteReg(R18 , 0x0000); // VREG1OUT voltage
    LCD_WriteReg(R19 , 0x0000);   // VDV[4:0] for VCOM amplitude
    Delay(20);                    // Delay 200 MS , Dis-charge capacitor power voltage
    LCD_WriteReg(R16 , 0x1690);   // SAP, BT[3:0], AP, DSTB, SLP, STB
    LCD_WriteReg(R17 , 0x0227); // R11H=0x0221 at VCI=3.3V, DC1[2:0], DC0[2:0], VC[2:0]
    Delay(5);      // Delay 50ms
    LCD_WriteReg(R18 , 0x001D); // External reference voltage= Vci;
    Delay(5);      // Delay 50ms
    LCD_WriteReg(R19 , 0x0800); // R13H=1D00 when R12H=009D;VDV[4:0] for VCOM amplitude
    LCD_WriteReg(R41 , 0x0014); // R29H=0013 when R12H=009D;VCM[5:0] for VCOMH
//    LCD_WriteReg(R43 , 0x000B);   // Frame Rate = 96Hz
    LCD_WriteReg(R43 , 0x000d);

    Delay(5);      // Delay 50ms
    LCD_WriteReg(R32 , 0x0000); // GRAM horizontal Address
    LCD_WriteReg(R33 , 0x0000); // GRAM Vertical Address
    /* ----------- Adjust the Gamma Curve ---------- */
    LCD_WriteReg(R48 , 0x0007);
    LCD_WriteReg(R49 , 0x0707);
    LCD_WriteReg(R50 , 0x0006);
    LCD_WriteReg(R53 , 0x0704);
    LCD_WriteReg(R54 , 0x1F04);
    LCD_WriteReg(R55 , 0x0004);
    LCD_WriteReg(R56 , 0x0000);
    LCD_WriteReg(R57 , 0x0706);
    LCD_WriteReg(R60 , 0x0701);
    LCD_WriteReg(R61 , 0x000F);
    /* ------------------ Set GRAM area --------------- */
    LCD_WriteReg(R80 , 0x0000);   // Horizontal GRAM Start Address
    // LCD_WriteReg(R81 , 0x00EF);   // Horizontal GRAM End Address
    LCD_WriteReg(R81, 0x00EF);
    LCD_WriteReg(R82 , 0x0000); // Vertical GRAM Start Address
    LCD_WriteReg(R83 , 0x013F); // Vertical GRAM end Address
    LCD_WriteReg(R96 , 0x2700); // Gate Scan Line
    LCD_WriteReg(R97 , 0x0001); // NDL,VLE, REV
    LCD_WriteReg(R106, 0x0000); // set scrolling line
    /* -------------- Partial Display Control --------- */
    LCD_WriteReg(R128, 0x0000);   
    LCD_WriteReg(R129, 0x0000);
    LCD_WriteReg(R130, 0x0000);
    LCD_WriteReg(R131, 0x0000);
    LCD_WriteReg(R132, 0x0000);
    LCD_WriteReg(R133, 0x0000);
    /* -------------- Panel Control ------------------- */
    LCD_WriteReg(R144, 0x0010);
    LCD_WriteReg(R146, 0x0000);
    LCD_WriteReg(R147, 0x0003);
    LCD_WriteReg(R149, 0x0110);
    LCD_WriteReg(R151, 0x0000);
    LCD_WriteReg(R152, 0x0000);
  
//竖屛1
//#define HSCREEN 1


#if SCREENTYPE == VSCREEN1
 LCD_WriteReg(R1  , 0x0100); // set SS and SM bit
 LCD_WriteReg(R96 , 0xA700);
 LCD_WriteReg(R3  , 0x0030);//0x1018);
#elif SCREENTYPE == VSCREEN2
//竖屛2
 LCD_WriteReg(R1  , 0x0000); // set SS and SM bit
 LCD_WriteReg(R96 , 0x2700);
 LCD_WriteReg(R3  , 0x0030);//0x1018);
#elif SCREENTYPE == HSCREEN1
//横屛1
 LCD_WriteReg(R1  , 0x0000); // set SS and SM bit
 LCD_WriteReg(R96 , 0xA700);
 LCD_WriteReg(R3  , 0x0038); //0x1018);
#elif SCREENTYPE == HSCREEN2
//横屛2
 LCD_WriteReg(R1  , 0x0100); // set SS and SM bit
 LCD_WriteReg(R96 , 0x2700);
 LCD_WriteReg(R3  , 0x0038); //0x1018);
#else
#error "Err : SCREENTYPE"
#endif
  LCD_WriteReg(R7  , 0x0173); // 262K color and display ON

}


/*******************************************************************************
* Function Name  : LCD_Clear
* Description    : Clears the hole LCD.
* Input          : Color: the color of the background.
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_Clear(u16 Color)
{
  u32 index = 0;
  
  LCD_SetCursor(0x00, 0x0000); 

  LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */

  for(index = 0; index < 76800; index++)
  {
    LCD->LCD_RAM = Color;	
  }
}




/*******************************************************************************
* Function Name  : LCD_SetCursor
* Description    : Sets the cursor position.
* Input          : - Xpos: specifies the X position.
*                  - Ypos: specifies the Y position. 
* Output         : None
* Return         : None
*******************************************************************************/
__inline void LCD_SetCursor(u16 Xpos, u16 Ypos)
{ 
#if (SCREENTYPE & (VSCREEN1 | VSCREEN2)) 
  LCD_WriteReg(R32, Xpos);
  LCD_WriteReg(R33, Ypos);
#elif (SCREENTYPE & (HSCREEN1 | HSCREEN2))
  LCD_WriteReg(R32, Ypos);
  LCD_WriteReg(R33, Xpos);
#else
#error "Err : SCREENTYPE"
#endif
}


/*******************************************************************************
* Function Name  : LCD_SetDisplayWindow
* Description    : Sets a display window
* Input          : - Xpos: specifies the X buttom left position.
*                  - Ypos: specifies the Y buttom left position.
*                  - Height: display window height.
*                  - Width: display window width.
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_SetDisplayWindow(u8 Xpos, u16 Ypos, u8 Height, u16 Width)
{
  /* Horizontal GRAM Start Address */
  if(Xpos >= Height)
  {
    LCD_WriteReg(R80, (Xpos - Height + 1));
  }
  else
  {
    LCD_WriteReg(R80, 0);
  }
  /* Horizontal GRAM End Address */
  LCD_WriteReg(R81, Xpos);
  /* Vertical GRAM Start Address */
  if(Ypos >= Width)
  {
    LCD_WriteReg(R82, (Ypos - Width + 1));
  }  
  else
  {
    LCD_WriteReg(R82, 0);
  }
  /* Vertical GRAM End Address */
  LCD_WriteReg(R83, Ypos);

  LCD_SetCursor(Xpos, Ypos);
}