lcd.c

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/******************** (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 "main.h"
#include "fonts.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  : 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 5 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  , 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  , 0x0207);   // 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 , 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
  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(R82 , 0x0000); // Vertical GRAM Start Address
  LCD_WriteReg(R83 , 0x013F); // Vertical GRAM Start Address
  LCD_WriteReg(R96 , 0xA700); // 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, 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
*******************************************************************************/
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.
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_DisplayChar(u8 Line, u16 Column, u8 Ascii)
{
  Ascii -= 32;
  LCD_DrawChar(Line, Column, &ASCII_Table[Ascii * 24]);
}

/*******************************************************************************
* Function Name  : LCD_DisplayStringLine
* Description    : Displays a maximum of 20 char on the LCD.
* 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
*                  - *ptr: pointer to string to display on LCD.
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_DisplayStringLine(u8 Line, u8 *ptr)
{
  u32 i = 0;
  u16 refcolumn = 319;

  /* Send the string character by character on lCD */
  while ((*ptr != 0) && (i < 20))
  {
    /* Display one character on LCD */
    LCD_DisplayChar(Line, refcolumn, *ptr);
    /* Decrement the column position by 16 */
    refcolumn -= 16;
    /* Point on the next character */
    ptr++;
    /* Increment the character counter */
    i++;
  }
}

/*******************************************************************************
* 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);
}

/*******************************************************************************
* Function Name  : LCD_WindowModeDisable
* Description    : Disables LCD Window mode.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_WindowModeDisable(void)
{
  LCD_SetDisplayWindow(239, 0x13F, 240, 320);
  LCD_WriteReg(R3, 0x1018);    
}
/*******************************************************************************
* Function Name  : LCD_DrawLine
* Description    : Displays a line.
* Input          : - Xpos: specifies the X position.
*                  - Ypos: specifies the Y position.
*                  - Length: line length.
*                  - Direction: line direction.
*                    This parameter can be one of the following values: Vertical 
*                    or Horizontal.
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_DrawLine(u8 Xpos, u16 Ypos, u16 Length, u8 Direction)
{
  u32 i = 0;
  
  LCD_SetCursor(Xpos, Ypos);

  if(Direction == Horizontal)
  {
    LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
    for(i = 0; i < Length; i++)
    {
      LCD_WriteRAM(TextColor);
    }
  }
  else
  {
    for(i = 0; i < Length; i++)
    {
      LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
      LCD_WriteRAM(TextColor);
      Xpos++;
      LCD_SetCursor(Xpos, Ypos);
    }
  }
}

/*******************************************************************************
* Function Name  : LCD_DrawRect
* Description    : Displays a rectangle.
* Input          : - Xpos: specifies the X position.
*                  - Ypos: specifies the Y position.
*                  - Height: display rectangle height.
*                  - Width: display rectangle width.
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_DrawRect(u8 Xpos, u16 Ypos, u8 Height, u16 Width)
{
  LCD_DrawLine(Xpos, Ypos, Width, Horizontal);
  LCD_DrawLine((Xpos + Height), Ypos, Width, Horizontal);
  
  LCD_DrawLine(Xpos, Ypos, Height, Vertical);
  LCD_DrawLine(Xpos, (Ypos - Width + 1), Height, Vertical);
}

/*******************************************************************************
* Function Name  : LCD_DrawCircle
* Description    : Displays a circle.
* Input          : - Xpos: specifies the X position.
*                  - Ypos: specifies the Y position.
*                  - Height: display rectangle height.
*                  - Width: display rectangle width.
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_DrawCircle(u8 Xpos, u16 Ypos, u16 Radius)
{