i2c_panel.c

一个用于控制LCD panel显示的驱动程序。控制LCD读写和显示控制。

#ifdef SUPPORT_I2C_LCD_Panel
/*
** FUNCTION:init_command_cd4094b()
** PURPOSE:initialize the TFT-LCD CONTROLLER UPS017 using 
** CD4094B
** CD4094B:8-Stage Shift-and-Store Bus Register
** Q1--ZX1,Q2--ZX2,Q3--ZX3,
** Q5--VM 1/0--pal/ntsc,
** Q6--UD,Q7--LRC
** tv_mode: 1/0 --- ntsc/pal
** tft_mode:1/0 --- 16:9/4:3
** tjf 2004-9-13
*/
#define SCL_GPIO	0
#define SDA_GPIO	1
#define STR_GPIO 	49
//#define VIDEO_INOUT_GPIO	99
void init_command_cd4094b(BYTE tv_mode,BYTE tft_mode)
{
    int i;
    BYTE Data4094_pal_16_9[8]={0,0,0,1,0,1,1,1};
	BYTE Data4094_pal_4_3[8]={0,0,0,1,0,1,0,0};
	BYTE Data4094_ntsc_16_9[8]={0,0,0,0,0,1,1,1};
	BYTE Data4094_ntsc_4_3[8]={0,0,0,0,0,1,0,0};
	//NC,LR,UD,VM,NC,ZX3,ZX2,ZX1
	
    GPIO_M_SET(47,1);
    GPIO_E_SET(47,1);
    GPIO_O_SET(47,1);    //Set TFT_SB to H ,Enable TFT 9V. 
    
    GPIO_M_SET(STR_GPIO,1);
    GPIO_E_SET(STR_GPIO,1);
    GPIO_O_SET(STR_GPIO,0);     //Set STROBE to L
    
    GPIO_M_SET(SCL_GPIO,1);     //Set I2C_CLK to RISC
    GPIO_E_SET(SCL_GPIO,1);
    GPIO_O_SET(SCL_GPIO,0);     //Set I2C_CLK to L 
        
        
    GPIO_M_SET(SDA_GPIO,1);     //Set I2C_DATA to RISC
    GPIO_E_SET(SDA_GPIO,1);
    GPIO_O_SET(SDA_GPIO,1);     //Set I2C_DATA to H
    delay_1us(100);

	GPIO_O_SET(STR_GPIO,1);     //Set STROBE to H for 4094 transfer data
    delay_1us(10);
    GPIO_O_SET(SCL_GPIO,0);     //Set I2C_CLK to L 
    delay_1us(7);
    if(tv_mode == 1)    
    {
    	for(i=0;i<8;i++)
    	{
    		if(tft_mode == 1)
        		GPIO_O_SET(SDA_GPIO,Data4094_ntsc_16_9[i]);
			else
				GPIO_O_SET(SDA_GPIO,Data4094_ntsc_4_3[i]);
        	delay_1us(7);
        	GPIO_O_SET(SCL_GPIO,1);
        	delay_1us(7);
        	GPIO_O_SET(SCL_GPIO,0);
        	delay_1us(7);
    	}
    }
	else
	{
    	for(i=0;i<8;i++)
    	{
        	if(tft_mode == 1)
        		GPIO_O_SET(SDA_GPIO,Data4094_pal_16_9[i]);
			else
				GPIO_O_SET(SDA_GPIO,Data4094_pal_4_3[i]);
        	delay_1us(7);
        	GPIO_O_SET(SCL_GPIO,1);
        	delay_1us(7);
        	GPIO_O_SET(SCL_GPIO,0);
        	delay_1us(7);
    	}
    }
    GPIO_O_SET(STR_GPIO,0);
    delay_1us(10);
}   

/*
** FUNCTION:init_command_an2526fh(tv_mode)
** PURPOSE:initialize the Panasonic LCD color TV signal
** processor of AN2526FH
** AN2526FH i2c address: is 0x88 when pin49 is high,or 
** is 0x8a
** AN2526FH i2c init command :16 byte,destination address 
** is from 0 to 15
** communcated mode:i2c 
** tv_mode: 1/0 --- ntsc/pal
** tjf 2004-9-13
*/
/* ntsc org param:
	{
	  	0x84,		// 0 Vertical sync. signal output position
	  	0x8e,		// 1 Horizontal sync. signal output position
	  	0xa0,		// 2 PWM duty
	  	0x18+0x80,	// 3 Common pulse amplitude
	  	0x7f,		// 4 Y-gain
	  	0x46+0x80,	// 5 Color gain
	  	0x3e,		// 6 Hue
	  	0x9f,		// 7 Black-limiter level
	   	0x30,		// 8 Bright
	   	0xa7,		// 9 Y-aperture gain
	   	0x9a,		// 10 R-ch. sub bright
	   	0xa2,		// 11 B-ch. sub bright
	  	0x80,		// 12 White peak limiter
	  	0x9c,		// 13 Gamma-1 Knee level
	  	0x89,		// 14 Gamma-2 Knee level
	   	0x12+0x80	// 15 RGB contrast
	};
*/
void init_command_an2526fh(BYTE tv_mode)
{
	int iRts;
	//BYTE i = 0;
	BYTE an2526_data_ntsc[16] = 
	{
	  	0x84,		// 0 Vertical sync. signal output position
	  	0x8e,		// 1 Horizontal sync. signal output position
	  	0xa0,		// 2 PWM duty
	  	0x18+0x80,	// 3 Common pulse amplitude
	  	0x7f,		// 4 Y-gain
	  	0x46+0x80,	// 5 Color gain
	  	0x3e,		// 6 Hue
	  	0x9f,		// 7 Black-limiter level
	   	0x30,		// 8 Bright
	   	0xa7,		// 9 Y-aperture gain
	   	0x9a,		// 10 R-ch. sub bright
	   	0xa2,		// 11 B-ch. sub bright
	  	0x80,		// 12 White peak limiter
	  	0x9c,		// 13 Gamma-1 Knee level
	  	0x89,		// 14 Gamma-2 Knee level
	   	0x12+0x80	// 15 RGB contrast
	};
	BYTE an2526_data_pal[16] = 
	{
	  	0x84,		//Vertical sync. signal output position
	  	0x0e,		//Horizontal sync. signal output position
	  	0xa0,		//PWM duty
	  	0x18+0x80,	//Common pulse amplitude
	  	0xad,		//Y-gain
	  	0x65+0x80,	//Color gain
	  	0x3e,		//Hue
	  	0x9f,		//Black-limiter level
	   	0x2c,		//Bright
	   	0xa7,		//Y-aperture gain
	   	0x8b,		//R-ch. sub bright
	   	0x87,		//B-ch. sub bright
	  	0x80,		//White peak limiter
	  	0x9c,		//Gamma-1 Knee level
	  	0x89,		//Gamma-2 Knee level
	   	0x31+0x80	//RGB contrast
	};
	
    GPIO_M_SET(SCL_GPIO,0);    //Set I2C_CLK to IOP
    GPIO_M_SET(SDA_GPIO,0);    //Set I2C_DATA to IOP

	//do{
		if(tv_mode) //ntsc mode
			iRts=WriteToI2c(0x88,0,an2526_data_ntsc,16);
		else   	//pal mode
			iRts=WriteToI2c(0x88,0,an2526_data_pal,16);	

		if(iRts == 1)
			printf("write an2526 ok!\n");
		else
			printf("write an2526 error!\n");
		
		//i++;
	//} while (i < 50);	

}

/*
** FUNCTION:init_I2C_panel()
** PURPOSE:initialize the panel,default is ntsc mode
** tjf 2004-9-13
*/
void init_I2C_panel(void)
{
	//regs0->tv_mode[0] &= 0xfff0;
	init_command_cd4094b(1,1); //ntsc mode,16:9

	init_command_an2526fh(1);
}
#endif