#include "stm32f10x.h"
#include "ili9325.h"

/* LCD Registers */
#define       R0             0x00
#define       R1             0x01
#define       R2             0x02
#define       R3             0x03
#define       R4             0x04
#define       R5             0x05
#define       R6             0x06
#define       R7             0x07
#define       R8             0x08
#define       R9             0x09
#define       R10            0x0A
#define       R12            0x0C
#define       R13            0x0D
#define       R14            0x0E
#define       R15            0x0F
#define       R16            0x10
#define       R17            0x11
#define       R18            0x12
#define       R19            0x13
#define       R20            0x14
#define       R21            0x15
#define       R22            0x16
#define       R23            0x17
#define       R24            0x18
#define       R25            0x19
#define       R26            0x1A
#define       R27            0x1B
#define       R28            0x1C
#define       R29            0x1D
#define       R30            0x1E
#define       R31            0x1F
#define       R32            0x20
#define       R33            0x21
#define       R34            0x22
#define       R36            0x24
#define       R37            0x25
#define       R40            0x28
#define       R41            0x29
#define       R43            0x2B
#define       R45            0x2D
#define       R48            0x30
#define       R49            0x31
#define       R50            0x32
#define       R51            0x33
#define       R52            0x34
#define       R53            0x35
#define       R54            0x36
#define       R55            0x37
#define       R56            0x38
#define       R57            0x39
#define       R59            0x3B
#define       R60            0x3C
#define       R61            0x3D
#define       R62            0x3E
#define       R63            0x3F
#define       R64            0x40
#define       R65            0x41
#define       R66            0x42
#define       R67            0x43
#define       R68            0x44
#define       R69            0x45
#define       R70            0x46
#define       R71            0x47
#define       R72            0x48
#define       R73            0x49
#define       R74            0x4A
#define       R75            0x4B
#define       R76            0x4C
#define       R77            0x4D
#define       R78            0x4E
#define       R79            0x4F
#define       R80            0x50
#define       R81            0x51
#define       R82            0x52
#define       R83            0x53
#define       R96            0x60
#define       R97            0x61
#define       R106           0x6A
#define       R118           0x76
#define       R128           0x80
#define       R129           0x81
#define       R130           0x82
#define       R131           0x83
#define       R132           0x84
#define       R133           0x85
#define       R134           0x86
#define       R135           0x87
#define       R136           0x88
#define       R137           0x89
#define       R139           0x8B
#define       R140           0x8C
#define       R141           0x8D
#define       R143           0x8F
#define       R144           0x90
#define       R145           0x91
#define       R146           0x92
#define       R147           0x93
#define       R148           0x94
#define       R149           0x95
#define       R150           0x96
#define       R151           0x97
#define       R152           0x98
#define       R153           0x99
#define       R154           0x9A
#define       R157           0x9D
#define       R192           0xC0
#define       R193           0xC1
#define       R229           0xE5

/* LCD color */
#define White          0xFFFF
#define Black          0x0000
#define Grey           0xF7DE
#define Blue           0x001F
#define Blue2          0x051F
#define Red            0xF800
#define Magenta        0xF81F
#define Green          0x07E0
#define Cyan           0x7FFF
#define Yellow         0xFFE0

static u16 DeviceCode;

/*******************************************************************************
* Function Name  : LCD_FSMCConfig
* Description    : Configures the Parallel interface (FSMC) for LCD(Parallel mode)
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
static void LCD_FSMCConfig(void)
{
    FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
    FSMC_NORSRAMTimingInitTypeDef  p;

    /*-- FSMC Configuration ------------------------------------------------------*/
    /*----------------------- SRAM Bank 4 ----------------------------------------*/
    /* FSMC_Bank1_NORSRAM4 configuration */
    p.FSMC_AddressSetupTime = 0;
    p.FSMC_AddressHoldTime = 0;
    p.FSMC_DataSetupTime = 2;
    p.FSMC_BusTurnAroundDuration = 0;
    p.FSMC_CLKDivision = 0;
    p.FSMC_DataLatency = 0;
    p.FSMC_AccessMode = FSMC_AccessMode_A;

    /* Color LCD configuration ------------------------------------
       LCD configured as follow:
          - Data/Address MUX = Disable
          - Memory Type = SRAM
          - Data Width = 16bit
          - Write Operation = Enable
          - Extended Mode = Enable
          - Asynchronous Wait = Disable */
    FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM2;
    FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
    FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
    FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
    FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
    FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
    FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
    FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
    FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
    FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
    FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
    FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
    FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
    FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;

    FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
    FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM2, ENABLE);
}

/*******************************************************************************
* Function Name  : ili9325_WriteReg
* Description    : Writes to the selected LCD register.
* Input          : - LCD_Reg: address of the selected register.
*                  - LCD_RegValue: value to write to the selected register.
* Output         : None
* Return         : None
*******************************************************************************/
void ili9325_WriteReg(u8 LCD_Reg,u16 LCD_RegValue)
{
    /* Write 16-bit Index, then Write Reg */
    ili9325_REG = LCD_Reg;
    /* Write 16-bit Reg */
    ili9325_RAM = LCD_RegValue;
}

/*******************************************************************************
* Function Name  : LCD_ReadReg
* Description    : Reads the selected LCD Register.
* Input          : None
* Output         : None
* Return         : LCD Register Value.
*******************************************************************************/
u16 LCD_ReadReg(u8 LCD_Reg)
{
    /* Write 16-bit Index (then Read Reg) */
    ili9325_REG = LCD_Reg;
    /* Read 16-bit Reg */
    return (ili9325_RAM);
}

/*******************************************************************************
* Function Name  : ili9325_WriteRAM_Prepare
* Description    : Prepare to write to the LCD RAM.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void ili9325_WriteRAM_Prepare(void)
{
    ili9325_REG = R34;
}

/*******************************************************************************
* Function Name  : ili9325_WriteRAM
* Description    : Writes to the LCD RAM.
* Input          : - RGB_Code: the pixel color in RGB mode (5-6-5).
* Output         : None
* Return         : None
*******************************************************************************/
void ili9325_WriteRAM(u16 RGB_Code)
{
    /* Write 16-bit GRAM Reg */
    ili9325_RAM = RGB_Code;
}

/* 读取指定地址的GRAM */
unsigned short ili9325_ReadGRAM(unsigned short x,unsigned short y)
{
    unsigned short temp;
    ili9325_SetCursor(x,y);
    ili9325_REG = R34;
    /* dummy read */
    temp = ili9325_RAM;
    temp = ili9325_RAM;
    return temp;
}

void ili9325_Initializtion(void)
{
    volatile unsigned int i;
    LCD_FSMCConfig();

    DeviceCode = LCD_ReadReg(0x0000);
    if (DeviceCode==0x9325||DeviceCode==0x9328)
    {
        ili9325_WriteReg(0x00e7,0x0010);
        ili9325_WriteReg(0x0000,0x0001);  			        //start internal osc
        ili9325_WriteReg(0x0001,0x0100);
        ili9325_WriteReg(0x0002,0x0700); 				    //power on sequence
        /* [5:4]-ID1~ID0 [3]-AM-1垂直-0水平 */
        ili9325_WriteReg(0x0003,(1<<12)|(1<<5)|(0<<4) | (1<<3) );
        ili9325_WriteReg(0x0004,0x0000);
        ili9325_WriteReg(0x0008,0x0207);
        ili9325_WriteReg(0x0009,0x0000);
        ili9325_WriteReg(0x000a,0x0000); 				//display setting
        ili9325_WriteReg(0x000c,0x0001);				//display setting
        ili9325_WriteReg(0x000d,0x0000); 				//0f3c
        ili9325_WriteReg(0x000f,0x0000);
        //Power On sequence //
        ili9325_WriteReg(0x0010,0x0000);
        ili9325_WriteReg(0x0011,0x0007);
        ili9325_WriteReg(0x0012,0x0000);
        ili9325_WriteReg(0x0013,0x0000);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0010,0x1590);
        ili9325_WriteReg(0x0011,0x0227);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0012,0x009c);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0013,0x1900);
        ili9325_WriteReg(0x0029,0x0023);
        ili9325_WriteReg(0x002b,0x000e);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0020,0x0000);
        ili9325_WriteReg(0x0021,0x0000);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0030,0x0007);
        ili9325_WriteReg(0x0031,0x0707);
        ili9325_WriteReg(0x0032,0x0006);
        ili9325_WriteReg(0x0035,0x0704);
        ili9325_WriteReg(0x0036,0x1f04);
        ili9325_WriteReg(0x0037,0x0004);
        ili9325_WriteReg(0x0038,0x0000);
        ili9325_WriteReg(0x0039,0x0706);
        ili9325_WriteReg(0x003c,0x0701);
        ili9325_WriteReg(0x003d,0x000f);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0050,0x0000);
        ili9325_WriteReg(0x0051,0x00ef);
        ili9325_WriteReg(0x0052,0x0000);
        ili9325_WriteReg(0x0053,0x013f);
        ili9325_WriteReg(0x0060,0xa700);
        ili9325_WriteReg(0x0061,0x0001);
        ili9325_WriteReg(0x006a,0x0000);
        ili9325_WriteReg(0x0080,0x0000);
        ili9325_WriteReg(0x0081,0x0000);
        ili9325_WriteReg(0x0082,0x0000);
        ili9325_WriteReg(0x0083,0x0000);
        ili9325_WriteReg(0x0084,0x0000);
        ili9325_WriteReg(0x0085,0x0000);
        ili9325_WriteReg(0x0090,0x0010);
        ili9325_WriteReg(0x0092,0x0000);
        ili9325_WriteReg(0x0093,0x0003);
        ili9325_WriteReg(0x0095,0x0110);
        ili9325_WriteReg(0x0097,0x0000);
        ili9325_WriteReg(0x0098,0x0000);
        //display on sequence
        ili9325_WriteReg(0x0007,0x0133);
        ili9325_WriteReg(0x0020,0x0000);
        ili9325_WriteReg(0x0021,0x0000);
    }
    else if(DeviceCode==0x7783)
    {
        // Start Initial Sequence
        ili9325_WriteReg(0x00FF,0x0001);
        ili9325_WriteReg(0x00F3,0x0008);
        ili9325_WriteReg(0x0001,0x0100);
        ili9325_WriteReg(0x0002,0x0700);
        ili9325_WriteReg(0x0003,0x1030);  //0x1030
        ili9325_WriteReg(0x0008,0x0302);
        ili9325_WriteReg(0x0008,0x0207);
        ili9325_WriteReg(0x0009,0x0000);
        ili9325_WriteReg(0x000A,0x0000);
        ili9325_WriteReg(0x0010,0x0000);  //0x0790
        ili9325_WriteReg(0x0011,0x0005);
        ili9325_WriteReg(0x0012,0x0000);
        ili9325_WriteReg(0x0013,0x0000);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0010,0x12B0);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0011,0x0007);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0012,0x008B);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0013,0x1700);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
        ili9325_WriteReg(0x0029,0x0022);

        //################# void Gamma_Set(void) ####################//
        ili9325_WriteReg(0x0030,0x0000);
        ili9325_WriteReg(0x0031,0x0707);
        ili9325_WriteReg(0x0032,0x0505);
        ili9325_WriteReg(0x0035,0x0107);
        ili9325_WriteReg(0x0036,0x0008);
        ili9325_WriteReg(0x0037,0x0000);
        ili9325_WriteReg(0x0038,0x0202);
        ili9325_WriteReg(0x0039,0x0106);
        ili9325_WriteReg(0x003C,0x0202);
        ili9325_WriteReg(0x003D,0x0408);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);


        ili9325_WriteReg(0x0050,0x0000);
        ili9325_WriteReg(0x0051,0x00EF);
        ili9325_WriteReg(0x0052,0x0000);
        ili9325_WriteReg(0x0053,0x013F);
        ili9325_WriteReg(0x0060,0xA700);
        ili9325_WriteReg(0x0061,0x0001);
        ili9325_WriteReg(0x0090,0x0033);
        ili9325_WriteReg(0x002B,0x000B);
        ili9325_WriteReg(0x0007,0x0133);
        for (i=50000; i>0; i--);
        for (i=50000; i>0; i--);
    }


    ili9325_Clear( Blue );
}

/****************************************************************************
* 名    称：void ili9325_SetCursor(u16 x,u16 y)
* 功    能：设置屏幕座标
* 入口参数：x      行座标
*           y      列座标
* 出口参数：无
* 说    明：
* 调用方法：ili9325_SetCursor(10,10);
****************************************************************************/
void ili9325_SetCursor(u16 x,u16 y)
{
    ili9325_WriteReg(R32,x); /* 0-239 */
    ili9325_WriteReg(R33,y); /* 0-319 */
}

/****************************************************************************
* 名    称：void ili9325_SetWindows(u16 StartX,u16 StartY,u16 EndX,u16 EndY)
* 功    能：设置窗口区域
* 入口参数：StartX     行起始座标
*           StartY     列起始座标
*           EndX       行结束座标
*           EndY       列结束座标
* 出口参数：无
* 说    明：
* 调用方法：ili9325_SetWindows(0,0,100,100)；
****************************************************************************/
void ili9325_SetWindows(u16 StartX,u16 StartY,u16 EndX,u16 EndY)
{
    ili9325_SetCursor(StartX,StartY);
    ili9325_WriteReg(0x0050, StartX);
    ili9325_WriteReg(0x0052, StartY);
    ili9325_WriteReg(0x0051, EndX);
    ili9325_WriteReg(0x0053, EndY);
}

/****************************************************************************
* 名    称：void ili9325_Clear(u16 dat)
* 功    能：将屏幕填充成指定的颜色，如清屏，则填充 0xffff
* 入口参数：dat      填充值
* 出口参数：无
* 说    明：
* 调用方法：ili9325_Clear(0xffff);
****************************************************************************/
void ili9325_Clear(u16 Color)
{
    u32 index=0;
    ili9325_SetCursor(0,0);
    ili9325_WriteRAM_Prepare(); /* Prepare to write GRAM */
    for (index=0; index<76800; index++)
    {
        ili9325_RAM=Color;
    }
}

/****************************************************************************
* 名    称：void ili9325_DrawPicture(u16 StartX,u16 StartY,u16 EndX,u16 EndY,u16 *pic)
* 功    能：在指定座标范围显示一副图片
* 入口参数：StartX     行起始座标
*           StartY     列起始座标
*           EndX       行结束座标
*           EndY       列结束座标
            pic        图片头指针
* 出口参数：无
* 说    明：图片取模格式为水平扫描，16位颜色模式
* 调用方法：ili9325_DrawPicture(0,0,100,100,(u16*)demo);
****************************************************************************/
void ili9325_DrawPicture(u16 StartX,u16 StartY,u16 EndX,u16 EndY,u16 *pic)
{
    u16  i;
    ili9325_SetWindows(StartX,StartY,EndX,EndY);
    ili9325_SetCursor(StartX,StartY);

    ili9325_WriteRAM_Prepare();
    for (i=0; i<(EndX*EndY); i++)
    {
        ili9325_WriteRAM(*pic++);
    }
}


/****************************************************************************
* 名    称：u16 ili9325_BGR2RGB(u16 c)
* 功    能：RRRRRGGGGGGBBBBB 改为 BBBBBGGGGGGRRRRR 格式
* 入口参数：c      BRG 颜色值
* 出口参数：RGB 颜色值
* 说    明：内部函数调用
* 调用方法：
****************************************************************************/
unsigned short ili9325_BGR2RGB(unsigned short c)
{
    u16  r, g, b, rgb;

    b = (c>>0)  & 0x1f;
    g = (c>>5)  & 0x3f;
    r = (c>>11) & 0x1f;

    rgb =  (b<<11) + (g<<5) + (r<<0);

    return( rgb );
}