init_ve.c

ADI的ADSP-BF561下实现PAL制式video的demo。

#include "i2c.h"


// If Error.
	void inline retu (int ret) {
		printf("error %d\n", ret);
		//LEDS = 0x0001;
		//while (1);
	}

void Init_ADV7171()
{
	int ret = 0, j;
	unsigned int i, k;

	// Init I2C for ADV7171 Indent addr. 	ADV7171_IDENT=0x54	steht in vid out.h
	/*for (j=0x0; j<0xff; j=j+2) {
		if (!I2C_Init(j)) {
			printf("addr: %d\n", j);
		}
		else 
			break;
		//for (k=0; k<0xffff; k++) 
		//	asm ("nop;");
	}
	if (!I2C_Init(0x80)) {
		printf("Error");
	} 
	printf ("Fertig");
	*/		
		Init ();
		//#i2c konfiguration: => im 7171dbl auf seite 22 zu finden

		//# komplette i2c konfiguration f黵 PAL b,d,... modus ist auf seite 42
		//# unter RECOMMENDED REGISTER VALUES zu finden!

		// Setup ADV7171 Encoder. (PAL B, D, G, H, I)
		if (I2C_Write(0x05, 0x00))	//# mode register 0 auf PAL und PAL B,D,G,H,I
			retu (2);
		if (I2C_Write(0x00, 0x01))	//# mode register 1
			retu ( 3);
		if (I2C_Write(0x00, 0x02)) //# mode register 2
			retu ( 4);
		if (I2C_Write(0x00, 0x03)) //# mode register 3
			retu ( 5);
		if (I2C_Write(0x00, 0x04)) //# mode register 4
			retu ( 6);
		if (I2C_Write(0x00, 0x07)) //# timing mode register 0
			retu ( 7);
		if (I2C_Write(0x00, 0x08))	//# timing mode register 1
			retu (8);

		// subcarrier frequ reg m黶sen wegen pal modus ge鋘dert werden siehe adv7171 pdf seite 28
		// mit der formel von der seite 28 werden die subcarrier frequ reg berechnet
		// fscf = 4.43361875 (von seite 42), fclk bleibt 27Mhz
		if (I2C_Write(0xCB, 0x09)) //# SUBCARRIER FREQUENCY REGISTER 0
			retu ( 9);
		if (I2C_Write(0x8A, 0x0A)) //# SUBCARRIER FREQUENCY REGISTER 1
			retu ( 10);
		if (I2C_Write(0x09, 0x0B)) //# SUBCARRIER FREQUENCY REGISTER 2
			retu ( 11);
		if (I2C_Write(0x2A, 0x0C)) //# SUBCARRIER FREQUENCY REGISTER 3
			retu ( 12);
		if (I2C_Write(0x00, 0x0D)) //# SUBCARRIER PHASE REGISTER
			retu ( 13);
		if (I2C_Write(0x00, 0x0E)) //# CLOSED CAPTIONING EXTENDED DATA-BYTE 0
			retu ( 14);
		if (I2C_Write(0x00, 0x0F)) //# CLOSED CAPTIONING EXTENDED DATA-BYTE 1
			retu ( 15);
		if (I2C_Write(0x00, 0x10)) //# CLOSED CAPTIONING DATA-BYTE 0
			retu ( 16);
		if (I2C_Write(0x00, 0x11)) //# CLOSED CAPTIONING DATA-BYTE 1
			retu ( 17);
		if (I2C_Write(0x00, 0x12)) //# PAL TTX CONTROL REG 0
			retu ( 18);
		if (I2C_Write(0x00, 0x13)) //# PAL TTX CONTROL REG 1
			retu ( 19);
		if (I2C_Write(0x00, 0x14)) //# PAL TTX CONTROL REG 2
			retu ( 20);
		if (I2C_Write(0x00, 0x15)) //# PAL TTX CONTROL REG 3
			retu ( 21);
		if (I2C_Write(0x00, 0x16)) //# CGMS_WSS_0
			retu ( 22);
		if (I2C_Write(0x00, 0x17)) //# CGMS_WSS_1
			retu ( 23);
		if (I2C_Write(0x00, 0x18)) //# CGMS_WSS_2
			retu ( 24);
		if (I2C_Write(0x00, 0x19)) //# TELETEXT REQUEST CONTROL REGISTER
			retu ( 25);
}