//====================================================================================
//文 件 名：TFT_Driver.c
//功能描述: TFT驅(qū)動(dòng)程序(底層驅(qū)動(dòng))
//維護(hù)記錄: 2007年1月17日
//====================================================================================
#include "TFT_Driver.h"

STR_TFT TFT_Settings;
STR_TFT *pTFT_Settings = &TFT_Settings;	
unsigned short *pTFT_WorkBuf;
unsigned short *pTFT_DispBuf;

//=============================================================
//語(yǔ)法格式：	void TFT_SetSettings(void);
//實(shí)現(xiàn)功能：	更新TFT緩沖格式和緩沖地址設(shè)定
//參數(shù)：		無(wú)
//返回值：		無(wú)
//=============================================================
void TFT_SetSettings(void)
{
	*P_TFT_FRAME_FMT1 = pTFT_Settings->Buf_Format1;
	*P_TFT_FRAME_FMT2 = pTFT_Settings->Buf_Format2;
	*P_LCD_BUFFER_SA1 = (unsigned int)pTFT_Settings->Buf0;
	*P_LCD_BUFFER_SA2 = (unsigned int)pTFT_Settings->Buf1;
	*P_LCD_BUFFER_SA3 = (unsigned int)pTFT_Settings->Buf2;
}

//=============================================================
//語(yǔ)法格式：	unsigned short *TFT_SelDispBuf(unsigned char Buf_Cursor);
//實(shí)現(xiàn)功能：	選擇一個(gè)緩沖區(qū)作為顯示緩沖區(qū)
//參數(shù)：		Buf_Cursor - 作為顯示輸出的緩沖區(qū)序號(hào)(0~2)
//返回值：		作為顯示輸出的緩沖區(qū)起始地址
//=============================================================
unsigned short *TFT_SelDispBuf(unsigned char Buf_Cursor)
{
	*P_LCD_BUFFER_SEL = Buf_Cursor;
	switch(Buf_Cursor)
	{
		case 0:
			pTFT_DispBuf = pTFT_Settings->Buf0;
			break;
		case 1:
			pTFT_DispBuf = pTFT_Settings->Buf1;
			break;
		case 2:
			pTFT_DispBuf = pTFT_Settings->Buf2;
			break;
		default:
			break;		
	}
	return pTFT_DispBuf;
}

//=============================================================
//語(yǔ)法格式：	unsigned short *TFT_SelWorkBuf(unsigned char Buf_Cursor);
//實(shí)現(xiàn)功能：	選擇一個(gè)緩沖區(qū)作為工作緩沖區(qū)(TFT_API中的函數(shù)都是對(duì)工作緩沖區(qū)操作的)
//參數(shù)：		Buf_Cursor - 作為工作緩沖區(qū)的序號(hào)(0~2)
//返回值：		作為工作緩沖區(qū)的起始地址
//=============================================================
unsigned short *TFT_SelWorkBuf(unsigned char Buf_Cursor)
{
	switch(Buf_Cursor)
	{
		case 0:
			pTFT_WorkBuf = pTFT_Settings->Buf0;
			break;
		case 1:
			pTFT_WorkBuf = pTFT_Settings->Buf1;
			break;
		case 2:
			pTFT_WorkBuf = pTFT_Settings->Buf2;
			break;
		default:
			break;		
	}
	return pTFT_WorkBuf;
}

//=============================================================
//語(yǔ)法格式：	void TFT_InitHardware(void);
//實(shí)現(xiàn)功能：	初始化TFT相關(guān)硬件寄存器
//參數(shù)：		無(wú)
//返回值：		無(wú)
//=============================================================
void TFT_InitHardware(void)
{
	int i;

 	*P_LCD_INTERFACE_SEL |= TFT_INTERFACE;					// 管腳復(fù)用，選擇TFT_AUO模式
	*P_LCD_CLK_CONF = C_LCD_RST_DIS | C_LCD_CLK_EN;			// LCD模式時(shí)鐘使能
	if(clksel==24)
		*P_LCD_CLK_SEL|=0x08;
	// 設(shè)置TFT-LCD數(shù)據(jù)模式
	*P_TFT_DATA_SEQ = TFT_DATA_SEQ;							// TFT-LCD輸出數(shù)據(jù)順序
	*P_TFT_DATA_FMT = TFT_DATA_FMT;							// TFT-LCD管腳輸出數(shù)據(jù)格式

	// 設(shè)置TFT-LCD的行信號(hào)
	*P_TFT_HOR_ACT = TFT_HOR_ACT;
	*P_TFT_HOR_FRONT = TFT_HOR_FRONT;
	*P_TFT_HOR_BACK = TFT_HOR_BACK;
	*P_TFT_HOR_SYNC = TFT_HOR_SYNC;
	
	// 設(shè)置TFT-LCD的場(chǎng)信號(hào)
	*P_TFT_VER_ACT = TFT_VER_ACT;
	*P_TFT_VER_FRONT = TFT_VER_FRONT;
	*P_TFT_VER_BACK = TFT_VER_BACK;
	*P_TFT_VER_SYNC = TFT_VER_SYNC;

	// 設(shè)置TFT-LCD顯示的起始位置
	*P_TFT_ROW_START = TFT_ROW_START;
	*P_TFT_COL_START = TFT_COL_START;
	*P_TFT_COL_WIDTH = TFT_COL_WIDTH;
	*P_TFT_DUMMY_WIDTH = TFT_DUMMY_WIDTH;
	
	pTFT_Settings->Buf_Format1 = C_TFT_BUF_RGB565 ;//C_TFT_BUF_4Y4U4Y4V;
	pTFT_Settings->Buf_Format2 = C_TFT_BUF_YUV;// signC_TFT_BUF_YCBCR
	pTFT_Settings->Buf0 = (unsigned short*)TFT_BUFFER0_SA;
	pTFT_Settings->Buf1 = (unsigned short*)TFT_BUFFER1_SA;
	pTFT_Settings->Buf2 = (unsigned short*)TFT_BUFFER2_SA;
	
	TFT_SetSettings();

	for(i=0; i<TFT_WIDTH*TFT_HEIGHT; i++)
	{
		pTFT_Settings->Buf0[i] = 0x0000;
		pTFT_Settings->Buf1[i] = 0x0000;
		pTFT_Settings->Buf2[i] = 0x0000;
	}
	TFT_SelWorkBuf(0);
	TFT_SelDispBuf(0);
	
	// 設(shè)置TFT-LCD的控制寄存器
	*P_TFT_INT_STATUS = ~C_TFT_INT_EN;			// 中斷不使能
	// 使能TFT模塊，圖像不放大，選擇6.75MHz時(shí)鐘
	*P_TFT_MODE_CTRL = C_TFT_CTRL_EN | TFT_CLK_SET;
}