tea5767.c

5767例子程序

#include <pic18.h>

#include "../include/Device.h"
#ifdef INCLUDE_TEA5767
void FM5767_WRITE_I2C( void )
{
	unsigned char	i;

	IIC_BYTE_START();

	for ( i = 0; i < 6; i++ ) {
		IIC_BYTE_WRITE( sBufferWrite[ i ] );
		IIC_BYTE_ACK();
	}

	IIC_BYTE_STOP();
}

void FM5767_WRITE_3WIRE( void )
{
	unsigned char	i;

	FM_I2C_CLK = 0;
	FM_I2C_DATA = 0;

	DELAY_1US(10);

	FM_RW = 1;
	DELAY_1US(10);
	FM_RW = 0;
	DELAY_1US(5);
	FM_RW = 1;
	DELAY_1US(5);

	for ( i = 1; i < 6; i++ ) {
		IIC_BYTE_WRITE( sBufferWrite[ i ] );

		DELAY_1US(10);
	}

	FM_RW = 1;
	DELAY_1US(10);
	FM_RW = 0;
	DELAY_1US(5);
	FM_RW = 1;
	DELAY_1US(5);
}

void FM5767_BAND( void )
{
	unsigned char	sBuffer[ 2 ];

	MakePLL( sBuffer, fm_frequency );

	sBufferWrite[ 0 ] = 0xC0;

	sBufferWrite[ 1 ] = sBuffer[ 0 ];
	sBufferWrite[ 2 ] = sBuffer[ 1 ];

	if ( fm_band_mode == FM_BAND_USA ) {
		sBufferWrite[ 3 ] = 0x50;
		sBufferWrite[ 4 ] = 0x11;
		sBufferWrite[ 5 ] = 0xC0;
	}
	else {
		sBufferWrite[ 3 ] = 0x40;
		sBufferWrite[ 4 ] = 0x31;
		sBufferWrite[ 5 ] = 0x80;
	}

	if ( fm_mo_st == FM_MONO )
		sBufferWrite[ 3 ] |= 0x08;

	if ( fm_hcc )
		sBufferWrite[ 4 ] |= 0x04;

	if ( fm_snc )
		sBufferWrite[ 4 ] |= 0x02;
}

void FM5767_READ( void )
{
	unsigned char	i;

	sBufferRead[ 0 ] = 0xC1;
	sBufferRead[ 1 ] = 0x00;
	sBufferRead[ 2 ] = 0x00;
	sBufferRead[ 3 ] = 0x00;
	sBufferRead[ 4 ] = 0x00;
	sBufferRead[ 5 ] = 0x00;

	if ( ucChipInterface == CHIP_IF_I2C ) {
		IIC_BYTE_START();

		IIC_BYTE_WRITE( 0xC1 );
		IIC_BYTE_ACK();

		for ( i = 1; i < 6; i++ ) {
			sBufferRead[i] = IIC_BYTE_READ();
			IIC_BYTE_ACK();
		}

		IIC_BYTE_STOP();
	}
	else {
		FM_RW = 0;
		DELAY_1US( 10 );
		FM_RW = 1;
		DELAY_1US( 5 );
		FM_RW = 0;
		DELAY_1US( 5 );

		for ( i = 1; i < 6; i++ ) {
			sBufferRead[ i ] = IIC_BYTE_READ();
		}
	}
}

void TEA5767_INIT( void )
{
	TX_ON = 0;
	FM_ON = 1;
	FM_EN = 1;

	FM_PLL_WRITE();
	DELAY_1MS( 100 );
	FM_PLL_WRITE();
	DELAY_1MS( 100 );
	FM_PLL_WRITE();
}
#endif