tea5760.c

是FM芯片 TEA5760的驱动代码 在ADS上面编译通过的.

/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2005
*
*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
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*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
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*****************************************************************************/

/*******************************************************************************
 *
 * Filename:
 * ---------
 * TEA5767HN.c
 *
 * Project:
 * --------
 *   MAUI
 *
 * Description:
 * ------------
 *
 *      TEA5767HN Driver
 *
 * Author:
 * -------
 * -------
 *
 *==============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
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 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *==============================================================================
  *******************************************************************************/
#include "l1audio_def.h"
#if defined(TEA5760)  // add by xiezhongren

/* GPIO definition */
// Modify by xiezr. 2007.3.31 for FM
#define SDA 9   /* jupiter : 9 */
#define SCL  8	/* jupiter : 34 */
#define CRYCLK 4   /* jupiter :  */
#define BUSENABLE 6  /* jupiter : 42 */


//#define LA 19  

//#define UPandDN 9    /* jupiter : 9 */
//#define CLK 41   /* jupiter : 8 */

uint16  i2c_dummy_cnt;
#define I2C_DUMMY_DELAY(_delay) for (i2c_dummy_cnt = _delay; i2c_dummy_cnt!=0; i2c_dummy_cnt--)


void GPIO_ModeSetup(kal_uint16 pin, kal_uint16 conf_dada);
void GPIO_InitIO(char direction, char port);
void GPIO_WriteIO(char data,char port);
char GPIO_ReadIO(char port); 

uint8 const FM_RADIO_INPUT_LEVEL_THRESHOLD = 3;//remake by zwj  old value is:5

#define TXBYTE_DELAY_TIME 35
#define RXBYTE_DELAY_TIME 35


// close FM AMP  by Joansen. 2006.08.19
#define EC001_FM_ON  1
#define EC001_FM_OFF 0
#if 0 
int LM4811_ON(int fm_onoff)
{
	if ( fm_onoff )
	{
	   //FM on
       GPIO_ModeSetup(3,0);
       GPIO_InitIO(1,3);  
       GPIO_WriteIO(0,3);  // Modify, Enable LM4811
	}
	else
	{
       GPIO_ModeSetup(3,0);
       GPIO_InitIO(1,3);  
//       GPIO_WriteIO(1,3); // Disable LM4811
	}
    return 0;
}
#endif
void SerialCommStart(void) /* start or re-start */
{
   GPIO_WriteIO(1,BUSENABLE);  /* bus enabled */
   GPIO_WriteIO(0,SCL);//wzs
   
   GPIO_InitIO(1,SDA);
   GPIO_WriteIO(1,SDA);
   I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);
   
   GPIO_WriteIO(1,SCL);
   I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);

   GPIO_WriteIO(0,SDA);   /* start condition */
}

void SerialCommStop(void)
{
   GPIO_WriteIO(0,SCL);
   GPIO_InitIO(1,SDA);
   GPIO_WriteIO(0,SDA);
   I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);
   GPIO_WriteIO(1,SCL);
   I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);
   
   GPIO_WriteIO(1,SDA); /* stop condition */
   GPIO_WriteIO(0,BUSENABLE); /* bus disabled */
   
   //LM4811_ON(EC001_FM_OFF);
}


uint8 SerialCommTxByte(uint8 data) /* return 0 --> ack */
{
   int32 i;
   
   for(i=7; i>=0; i--)
   {
      GPIO_WriteIO( 0, SCL); /* low */
      I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);
   /* The bus operates at a maximum clock frequency of 400 kHz */
      if(i==7)
	  	GPIO_InitIO(1,SDA);  // dummy
      GPIO_WriteIO(((data>>i)&0x01), SDA);
      I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);
      GPIO_WriteIO( 1, SCL); /* high */
      I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);
   }
   GPIO_WriteIO(0, SCL); /* low */
   I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);
   GPIO_InitIO(0,SDA);
   I2C_DUMMY_DELAY(TXBYTE_DELAY_TIME);   
   GPIO_WriteIO(1, SCL); /* high */
   return GPIO_ReadIO(SDA);
}

void SerialCommRxByte(uint8 *data, uint8 ack)
{
   int32 i;
   uint32 dataCache;

   dataCache = 0;
   for(i=7; i>=0; i--)
   {
          GPIO_WriteIO(0, SCL);
          if(i==7)
		  GPIO_InitIO(0,SDA);
	   I2C_DUMMY_DELAY(RXBYTE_DELAY_TIME);
          GPIO_WriteIO(1, SCL);
	   I2C_DUMMY_DELAY(RXBYTE_DELAY_TIME);  
          dataCache |= (GPIO_ReadIO(SDA)<<i);
   }
   GPIO_WriteIO(0, SCL);
   I2C_DUMMY_DELAY(RXBYTE_DELAY_TIME);   
   GPIO_InitIO(1,SDA);
   I2C_DUMMY_DELAY(RXBYTE_DELAY_TIME);   
   GPIO_WriteIO(ack, SDA);
   I2C_DUMMY_DELAY(RXBYTE_DELAY_TIME);   
   GPIO_WriteIO(1, SCL);
   *data = (uint8)dataCache;
}

// close FM AMP  by Joansen. 2006.08.19
void SerialVolumeInit(void)
{

  // LM4811_ON(EC001_FM_ON);
/*
   GPIO_ModeSetup(UPandDN,0);
   GPIO_InitIO(1,UPandDN);
   GPIO_InitIO(1,CLK);
   */
}

void SerialCommInit(void)
{
   kal_prompt_trace(MOD_MMI,"SerialCommInit");
   GPIO_ModeSetup(SDA,0);
   GPIO_ModeSetup(SCL,0);//wzs
   GPIO_ModeSetup(BUSENABLE,0);
   GPO_ModeSetup(CRYCLK,3); //32K Clock

   GPIO_InitIO(1,SCL);
   GPIO_InitIO(1,BUSENABLE);
#if 0
   GPIO_ModeSetup(CLK,0);
//#ifdef use_3_wire
   GPIO_ModeSetup(LA,0);
   GPIO_InitIO(1,LA);
   GPIO_WriteIO(1,LA);//wzs
//#endif
#endif
   SerialVolumeInit();
}

void SerialCommCryClkOn(void)
{
   GPO_ModeSetup(CRYCLK,3); /* 32.768kHz reference frequency */
}

void SerialCommCryClkOff(void)
{
   GPO_ModeSetup(CRYCLK,0);
}


void SerialVolumeUp(void)
{
#if 0
  GPIO_WriteIO(1,UPandDN);
//  kal_sleep_task(5);
  GPIO_WriteIO(1,CLK);
  // kal_sleep_task(5);
  GPIO_WriteIO(0,CLK);
   //kal_sleep_task(5);
  GPIO_WriteIO(1,CLK);
   //kal_sleep_task(5);
  GPIO_WriteIO(0,CLK);
   //kal_sleep_task(5);
  GPIO_WriteIO(0,UPandDN);
//   kal_sleep_task(5);
#endif
}

void SerialVolumeDown(void)
{
#if 0
//kal_prompt_trace(MOD_MMI,"SerialDownVolume");
  GPIO_WriteIO(0,UPandDN);
//   kal_sleep_task(5);
  GPIO_WriteIO(1,CLK);
  // kal_sleep_task(5);
  GPIO_WriteIO(0,CLK);
  // kal_sleep_task(5);
  GPIO_WriteIO(1,CLK);
  // kal_sleep_task(5);
  GPIO_WriteIO(0,CLK);
  // kal_sleep_task(5);
 //  GPIO_WriteIO(1,UPandDN);
 //  kal_sleep_task(5);
#endif
}

void SerialVolumeReset()
{
      uint8 i;
      for(i = 16;i>0;i--){
        SerialVolumeDown();
        }
}

#endif