lcd.c

TFT LCD驱动程序(STM32), 字符显示

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : lcd.c
* Author             : MCD Application Team
* Version            : V1.0
* Date               : 10/08/2007
* Description        : This file includes the LCD driver for AM-240320LTNQW00H 
*                      (LCD_HX8312) and AM-240320L8TNQW00H (LCD_ILI9320) 
*                      Liquid Crystal Display Module of STM3210B-EVAL board.
********************************************************************************
* THE PRESENT SOFTWARE 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.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "fonts.h"
u8 picture_table[][16];
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#ifdef LCD_ILI9320
  #define START_BYTE  0x70
  #define SET_INDEX   0x00
  #define READ_STATUS 0x01
  #define WRITE_REG   0x02
  #define READ_REG    0x03
#endif  

/* 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  : STM3210B_LCD_Init
* Description    : Initializes the LCD.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void STM3210B_LCD_Init(void)
{ 
/* Configure the LCD Control pins --------------------------------------------*/
  LCD_CtrlLinesConfig();
  
/* Configure the SPI2 interface ----------------------------------------------*/
  LCD_SPIConfig();

#ifdef LCD_ILI9320
  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 */

#elif defined LCD_HX8312  
/* Enable the LCD Oscillator -------------------------------------------------*/
  LCD_WriteReg(R1, 0x10);
  LCD_WriteReg(R0, 0xA0);
  LCD_WriteReg(R3, 0x01);
  Delay(1); /* Delay 10 ms */
  LCD_WriteReg(R3, 0x00);
  LCD_WriteReg(R43, 0x04);
  
  LCD_WriteReg(R40, 0x18);
  LCD_WriteReg(R26, 0x05);
  LCD_WriteReg(R37, 0x05);
  LCD_WriteReg(R25, 0x00);
    
/* LCD Power On --------------------------------------------------------------*/
  LCD_WriteReg(R28, 0x73);
  LCD_WriteReg(R36, 0x74);
  LCD_WriteReg(R30, 0x01);
  LCD_WriteReg(R24, 0xC1);
  Delay(1); /* Delay 10 ms */
  LCD_WriteReg(R24, 0xE1);
  LCD_WriteReg(R24, 0xF1);
  Delay(6); /* Delay 60 ms */
  LCD_WriteReg(R24, 0xF5);
  Delay(6); /* Delay 60 ms */
  LCD_WriteReg(R27, 0x09);
  Delay(1); /* Delay 10 ms */
  LCD_WriteReg(R31, 0x11);
  LCD_WriteReg(R32, 0x0E);
  LCD_WriteReg(R30, 0x81);
  Delay(1); /* Delay 10 ms */
    
/* Chip Set ------------------------------------------------------------------*/
  LCD_WriteReg(R157, 0x00);
  LCD_WriteReg(R192, 0x00);
 
  LCD_WriteReg(R14, 0x00);
  LCD_WriteReg(R15, 0x00);
  LCD_WriteReg(R16, 0x00);
  LCD_WriteReg(R17, 0x00);
  LCD_WriteReg(R18, 0x00);
  LCD_WriteReg(R19, 0x00);
  LCD_WriteReg(R20, 0x00);
  LCD_WriteReg(R21, 0x00);
  LCD_WriteReg(R22, 0x00);
  LCD_WriteReg(R23, 0x00);
 
  LCD_WriteReg(R52, 0x01);
  LCD_WriteReg(R53, 0x00);

  LCD_WriteReg(R75, 0x00);
  LCD_WriteReg(R76, 0x00);
  LCD_WriteReg(R78, 0x00);
  LCD_WriteReg(R79, 0x00);
  LCD_WriteReg(R80, 0x00);

  LCD_WriteReg(R60, 0x00);
  LCD_WriteReg(R61, 0x00);
  LCD_WriteReg(R62, 0x01);
  LCD_WriteReg(R63, 0x3F);
  LCD_WriteReg(R64, 0x02);
  LCD_WriteReg(R65, 0x02);
  LCD_WriteReg(R66, 0x00);
  LCD_WriteReg(R67, 0x00);
  LCD_WriteReg(R68, 0x00);
  LCD_WriteReg(R69, 0x00);
  LCD_WriteReg(R70, 0xEF);
  LCD_WriteReg(R71, 0x00);
  LCD_WriteReg(R72, 0x00);
  LCD_WriteReg(R73, 0x01);
  LCD_WriteReg(R74, 0x3F);

  LCD_WriteReg(R29, 0x08);  /* R29:Gate scan direction setting */

  LCD_WriteReg(R134, 0x00);
  LCD_WriteReg(R135, 0x30);
  LCD_WriteReg(R136, 0x02);
  LCD_WriteReg(R137, 0x05);

  LCD_WriteReg(R141, 0x01);  /* R141:Register set-up mode for one line clock */
  LCD_WriteReg(R139, 0x20);  /* R139:One line SYSCLK number in one-line */
  LCD_WriteReg(R51, 0x01);  /* R51:N line inversion setting */
  LCD_WriteReg(R55, 0x01);  /* R55:Scanning method setting */
  LCD_WriteReg(R118, 0x00);
   
/* Gamma Set -----------------------------------------------------------------*/
  LCD_WriteReg(R143, 0x10);
  LCD_WriteReg(R144, 0x67);
  LCD_WriteReg(R145, 0x07);
  LCD_WriteReg(R146, 0x65);
  LCD_WriteReg(R147, 0x07);
  LCD_WriteReg(R148, 0x01);
  LCD_WriteReg(R149, 0x76);
  LCD_WriteReg(R150, 0x56);
  LCD_WriteReg(R151, 0x00);
  LCD_WriteReg(R152, 0x06);
  LCD_WriteReg(R153, 0x03);
  LCD_WriteReg(R154, 0x00);
  
/* Display On ----------------------------------------------------------------*/
  LCD_WriteReg(R1, 0x50);
  LCD_WriteReg(R5, 0x04);

  LCD_WriteReg(R0, 0x80);
  LCD_WriteReg(R59, 0x01);
  Delay(4);  /* Delay 40 ms */
  LCD_WriteReg(R0, 0x20);
#endif  
}

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

#ifdef LCD_ILI9320
  LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
#endif

  for(index = 0; index < 76800; index++)
  {
    LCD_WriteRAM(Color);
  }

#ifdef LCD_ILI9320
  LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
#endif  
}

/*******************************************************************************
* 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)
{
#ifdef LCD_ILI9320
  LCD_WriteReg(R32, Xpos);
  LCD_WriteReg(R33, Ypos);
#elif defined LCD_HX8312
  LCD_WriteReg(R66, Xpos);
  LCD_WriteReg(R67, ((Ypos & 0x100)>> 8));
  LCD_WriteReg(R68, (Ypos & 0xFF));
#endif
}

/*******************************************************************************
* 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++)
  //for(index = 0; index < 16; index++)
  {
    #ifdef LCD_ILI9320
      LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
    #endif
    for(i = 0; i < 16; i++)
    {
      if((c[index] & (1 << i)) == 0x00)
      {
        LCD_WriteRAM(BackColor);
      }
      else
      {
        LCD_WriteRAM(TextColor);
      }
    }
    #ifdef LCD_ILI9320
      LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
    #endif  
    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.