interface.c

用51模拟的TFT RGB接口驱动程序(HS,VS,DE,PCLK时序)

/****************************************************************************
* 公司名称:SITRONIX         										        *
* 模块名称:INTERFACE.C  	                                			    *
* 模块功能:IC接口通用文件，归属于每个IC测试软件包                 			*
* 创建人员:Jim Yuan															*
* 创建日期:2007-6-26														*
* 修改日期:2007-11-22（增加TFT RGB IF FUNCTION   							*
****************************************************************************/

#include "interface.h"


#if	INTERFACE == IF_80_8BIT
    sbit nRST	=P3^5;
    sbit RS     =P3^0;
    sbit nWR	=P3^1;
    sbit nRD    =P3^2;
    sbit nCS	=P3^3;
    void writec(uint8 cmd)
    {
    	RS = 0;
    	nRD = 1;
    	nCS = 0;
    	nWR = 0;
		P1 = cmd;
    	nWR = 1;
    	nCS = 1;
    }

    void writed(uint8 dat)
    {
    	RS = 1;
    	nRD = 1;
    	nCS = 0;
    	nWR = 0;
		P1 = dat;
    	nWR = 1;
    	nCS = 1;
    }

	uint8 readd(void)
	{
		uint8 dat;
		P1 = 0xff;
    	RS = 1;
		nWR = 1;
    	nRD = 1;
    	nCS = 0;
    	nRD = 0;
		dat = P1;;
    	nRD = 1;
    	nCS = 1;
		return dat;
    }
#endif

#if INTERFACE == IF_SPI_4LINE
    sbit nRST	=P3^5;
    sbit RS     =P3^0;
    sbit nCS	=P3^3;
    sbit SCL	=P1^0;
    sbit SDA    =P1^1;
    void writec(uint8 cmd)
    {
    	uint8 i;
    	RS = 0;
    	nCS = 0;
    	for (i = 0; i < 8; i++)
    	{
    		SCL = 0;
    		if (((cmd << i) & 0x80) == 0x80){SDA = 1;}
    		else{SDA = 0;}
    		SCL = 1;
    	}
    	nCS=1;
    }

    void writed(uint8 dat)
    {
    	uint8 i;
    	RS = 1;
    	nCS = 0;
    	for (i = 0; i < 8; i++)
    	{
    		SCL = 0;
    		if (((dat << i) & 0x80) == 0x80){SDA = 1;}
    		else{SDA = 0;}
    		SCL = 1;
    	}
    	nCS=1;
    }
#endif

/****************************************************************************
* 函数名称:ST7787 RGB IF 函数					    				        *
* 函数功能:实现SPI初始化和RGB/VS/HS/DE/PK信号的产生						    *
* 入口参数:								                                    *	  
* 创建日期:2007-11-22   													*
* 修改日期:         														*
* 修改原因:                                     							*
****************************************************************************/
#if INTERFACE == IF_SPI_RGB
    sbit nRST	=P3^5;
    sbit SCL    =P3^0;
	sbit SDA   	=P3^1;
    sbit nCS	=P3^3;

	sbit DE		=P1^0;
	sbit PK	    =P1^1;
	sbit HS     =P1^2;
	sbit VS     =P1^3;

	void writec(uint8 cmd)
    {				 	
    	uint8 i;
		SCL = 1;
		SDA = 1;
    	nCS = 0;
		SCL = 0;
		SDA = 0;
		SCL = 1;
    	for (i = 0; i < 8; i++)
    	{
    		SCL = 0;
    		if (((cmd << i) & 0x80) == 0x80){SDA = 1;}
    		else{SDA = 0;}
    		SCL = 1;
    	}
    	nCS=1;
    }

    void writed(uint8 dat)
    {
    	uint8 i;
		SCL = 1;
		SDA = 1;
    	nCS = 0;

		SCL = 0;
		SDA = 1;
		SCL = 1;
    	for (i = 0; i < 8; i++)
    	{
    		SCL = 0;
    		if (((dat << i) & 0x80) == 0x80){SDA = 1;}
    		else{SDA = 0;}
    		SCL = 1;
    	}
    	nCS=1;
    }

	void rgb_scan(void)
	{
		uint16 i,j;
		DE = 0;
		PK = 1;
		VS = 1;
		HS = 1;

		PK = 0;
		PK = 1;

		VS = 0;
		PK = 0;
		PK = 1;

		HS = 0;
		PK = 0;
		PK = 1;

		HS = 1;
		PK = 0;
		PK = 1;
		
		VS = 1;
		PK = 0;
		PK = 1;

		for (i = 0; i < 320; i++)
		{
			HS = 0;
			PK = 0;
			PK = 1;

			HS = 1;
			PK = 0;
			PK = 1;

			DE = 1;
			PK = 0;
			PK = 1;
			for (j = 0; j < 240; j++)
			{
				PK = 0;
				PK = 1;
			}
			DE = 0;
			PK = 0;
			PK = 1;
		}	 
	}
#endif

void hardware_reset(void)
{
    P1 = 0XFF;
    P3 = 0XFF;
	nRST = 0;
	delay(1);
	nRST = 1;
	delay(30);
}