lcd.c

编译环境是 iar EWARM ,STM32 下的UCOSII

/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name          : lcd.c
* Author             : MCD Application Team
* Version            : V1.1
* Date               : 05/30/2008
* 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
* FOR MORE INFORMATION PLEASE CAREFULLY READ THE LICENSE AGREEMENT FILE LOCATED
* IN THE ROOT DIRECTORY OF THIS FIRMWARE PACKAGE.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "fonts.h"
#include "lcd.h"

/* 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)

/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
  /* Global variables to set the written text color */
static  vu16 TextColor = 0x0000, BackColor = 0xFFFF;

/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : LCD_Setup
* Description    : Setups the LCD.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void  Delay (u32 nCount)
{
    volatile  int  i;


    for (i = 0; i < nCount * 100; i++) {
        ;
    }
}
/*******************************************************************************
* Function Name  : StrLength
* Description    : Returns length of string.
* Input          : - Str: Character Pointer.
* Output         : None
* Return         : String length.
*******************************************************************************/
static u32 StrLength(u8 *Str)
{
  u32 Index = 0;

  /* Increment the Index unless the end of string */
  for(Index = 0; *Str != '\0'; Str++, Index++)
  {
  }

  return Index;
}
/*******************************************************************************
* Function Name  : STM3210E_LCD_Init
* Description    : Initializes the LCD.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void STM3210E_LCD_Init(void)
{
/* Configure the LCD Control pins --------------------------------------------*/
  LCD_CtrlLinesConfig();

/* Configure the FSMC Parallel interface -------------------------------------*/
  LCD_FSMCConfig();

  Delay(5); /* delay 50 ms */
/* Start Initial Sequence ----------------------------------------------------*/
  LCD_WriteReg(R229,0x8000); /* Set the internal vcore voltage */
  LCD_WriteReg(R0,  0x0001); /* Start internal OSC. */
  LCD_WriteReg(R1,  0x0100); /* set SS and SM bit */
  LCD_WriteReg(R2,  0x0700); /* set 1 line inversion */
  LCD_WriteReg(R3,  0x1030); /* set GRAM write direction and BGR=1. */
  LCD_WriteReg(R4,  0x0000); /* Resize register */
  LCD_WriteReg(R8,  0x0202); /* set the back porch and front porch */
  LCD_WriteReg(R9,  0x0000); /* 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, 0x0000); /* 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, 0x0000); /* 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);                 /* Dis-charge capacitor power voltage (200ms) */
  LCD_WriteReg(R16, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
  LCD_WriteReg(R17, 0x0137); /* DC1[2:0], DC0[2:0], VC[2:0] */
  Delay(5);                  /* Delay 50 ms */
  LCD_WriteReg(R18, 0x0139); /* VREG1OUT voltage */
  Delay(5);                  /* Delay 50 ms */
  LCD_WriteReg(R19, 0x1d00); /* VDV[4:0] for VCOM amplitude */
  LCD_WriteReg(R41, 0x0013); /* VCM[4:0] for VCOMH */
  Delay(5);                  /* Delay 50 ms */
  LCD_WriteReg(R32, 0x0000); /* GRAM horizontal Address */
  LCD_WriteReg(R33, 0x0000); /* GRAM Vertical Address */

/* Adjust the Gamma Curve ----------------------------------------------------*/
  LCD_WriteReg(R48, 0x0006);
  LCD_WriteReg(R49, 0x0101);
  LCD_WriteReg(R50, 0x0003);
  LCD_WriteReg(R53, 0x0106);
  LCD_WriteReg(R54, 0x0b02);
  LCD_WriteReg(R55, 0x0302);
  LCD_WriteReg(R56, 0x0707);
  LCD_WriteReg(R57, 0x0007);
  LCD_WriteReg(R60, 0x0600);
  LCD_WriteReg(R61, 0x020b);

/* Set GRAM area -------------------------------------------------------------*/
  LCD_WriteReg(R80, 0x0000); /* Horizontal GRAM Start Address */
  LCD_WriteReg(R81, 0x00EF); /* Horizontal GRAM End Address */
  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);

  /* 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, 0x1018);

  LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}

/*******************************************************************************
* Function Name  : LCD_SetTextColor
* Description    : Sets the Text color.
* Input          : - Color: specifies the Text color code RGB(5-6-5).
* Output         : - TextColor: Text color global variable used by LCD_DrawChar
*                  and LCD_DrawPicture functions.
* Return         : None
*******************************************************************************/
void LCD_SetTextColor(vu16 Color)
{
  TextColor = Color;
}

/*******************************************************************************
* Function Name  : LCD_SetBackColor
* Description    : Sets the Background color.
* Input          : - Color: specifies the Background color code RGB(5-6-5).
* Output         : - BackColor: Background color global variable used by
*                  LCD_DrawChar and LCD_DrawPicture functions.
* Return         : None
*******************************************************************************/
void LCD_SetBackColor(vu16 Color)
{
  BackColor = Color;
}

/*******************************************************************************
* Function Name  : LCD_ClearLine
* Description    : Clears the selected line.
* Input          : - Line: the Line to be cleared.
*                    This parameter can be one of the following values:
*                       - Linex: where x can be 0..9
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_ClearLine(u8 Line)
{
  LCD_DisplayStringLine(Line, "                    ");
}

/*******************************************************************************
* 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, 0x013F);

  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
*******************************************************************************/
void LCD_SetCursor(u8 Xpos, u16 Ypos)
{
  LCD_WriteReg(R32, Xpos);
  LCD_WriteReg(R33, Ypos);
}

/*******************************************************************************
* Function Name  : LCD_DrawChar
* Description    : Draws a character on LCD.
* Input          : - Xpos: the Line where to display the character shape.
*                    This parameter can be one of the following values:
*                       - Linex: where x can be 0..9
*                  - Ypos: start column address.
*                  - c: pointer to the character data.
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_DrawChar(u8 Xpos, u16 Ypos, uc16 *c)
{
  u32 index = 0, i = 0;
  u8 Xaddress = 0;

  Xaddress = Xpos;

  LCD_SetCursor(Xaddress, Ypos);

  for(index = 0; index < 24; index++)
  {
    LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
    for(i = 0; i < 16; i++)
    {
      if((c[index] & (1 << i)) == 0x00)
      {
        LCD_WriteRAM(BackColor);
      }
      else
      {
        LCD_WriteRAM(TextColor);
      }
    }
    Xaddress++;
    LCD_SetCursor(Xaddress, Ypos);
  }
}

/*******************************************************************************
* Function Name  : LCD_DisplayChar
* Description    : Displays one character (16dots width, 24dots height).
* Input          : - Line: the Line where to display the character shape .
*                    This parameter can be one of the following values:
*                       - Linex: where x can be 0..9
*                  - Column: start column address.
*                  - Ascii: character ascii code, must be between 0x20 and 0x7E.