drvfmradioprivate.c

ecos FM radio driver

//===========================================================================
//      The information contained herein is the exclusive property of
//      Sunplus Technology Co。 And shall not be distributed, reproduced,
//      or disclosed in whole in part without prior written permission
//       (C) COPYRIGHT 2001   SUNPLUS TECHNOLOGY CO
//       ALL RIGHTS RESERVED
//       The entire notice above must be reproduced on all authorized copies
//===========================================================================
//  Filename   : DrvFMRadioPrivate.c
//  Author     : guoquan
//  Tel        : 
//  Date       : 2005/11/21
//  Description: DrvFMRadio模块私有函数。
//  Reference  :
//
//  Version history:				   
//---------------------------------------------------------------------------
//  Version   YYYY-MM-DD-INDEX   Modified By         Description
//---------------------------------------------------------------------------
//  1.0.0	    2005-11-21		  guoquan	           初始版本
//===========================================================================

//===========================================================================
//include file list
//===========================================================================
#include ".\system\TypeDefine.h"
#include ".\system\SysAssert.h"
#include ".\Driver\FMRadio\DrvFMRadioPrivate.h"
#include ".\Driver\FMRadio\DrvFMRadio.h"
#include "REG320.h"

#ifdef __FMRadio_5767__
UCHAR g_ucFMRadioWriteData[5];			//发送FM数据缓冲区                  
UCHAR g_ucFMRadioReadData[5];			//接收数据缓冲区                    
#endif
UCHAR g_ucTestFlag=0;


#ifndef _LV2400_
//===========================================================================
//Function   :	FMRadioI2CDelay
//Description: 	用于I2C通讯时的延时
//Syntax     :	void FMRadioI2CDelay(UCHAR ucCount)
//Parameters :	UCHAR ucCount	延时次数
//Return     :	NONE
//Notes      :	NONE
//===========================================================================
void FMRadioI2CDelay(UCHAR ucCount)
{    
    while(ucCount--)
    {
    	;
    }	 
    
}  

//===========================================================================
//Function   :	FMRadioI2CSendStart
//Description: 	发送起始位
//Syntax     :	void FMRadioI2CSendStart(void)
//Parameters :	NONE
//Return     :	NONE
//Notes      :	NONE
//===========================================================================
void FMRadioI2CSendStart(void)
{
	//EA = 0;

	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
    M_FMRADIOI2C_SCL_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_CLR;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SCL_CLR;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	        
}

//===========================================================================
//Function   :	FMRadioI2CSendStop
//Description: 	发送停止位
//Syntax     :	void FMRadioI2CSendStop(void)
//Parameters	NONE
//Return     :	NONE
//Notes      :	NONE
//===========================================================================
void FMRadioI2CSendStop(void)
{
	M_FMRADIOI2C_SCL_CLR;	        
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_CLR;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SCL_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	//EA = 1;

}

//===========================================================================
//Function   :	FMRadioI2CWaitAck
//Description: 	等待应答位
//Syntax     :	UCHAR FMRadioI2CWaitAck(void)
//Parameters :	NONE
//Return     :	TRUE		应答成功
//				FALSE		应答失败
//Notes      :	NONE
//===========================================================================
UCHAR FMRadioI2CWaitAck(void)
{
	
	UCHAR ucErrTime;
	
	//因故障接收方无ACK，超时值为255。
	ucErrTime = 255;
	
	//设置SDA为输入模式
	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_IN;
	FMRadioI2CDelay(C_FMRadioDelayNum);	
	M_FMRADIOI2C_SCL_SET;

	while((0 != ucErrTime) && (0 != M_FMRADIOI2C_SDA_INPUT_DATA))
	{
		ucErrTime--;				
	}
	
	FMRadioI2CDelay(C_FMRadioDelayNum);	
	M_FMRADIOI2C_SCL_CLR;	        
	FMRadioI2CDelay(C_FMRadioDelayNum);	

	//将SDA设置为输出模式
	M_FMRADIOI2C_SDA_OUT;
	FMRadioI2CDelay(C_FMRadioDelayNum);	
	
	if(ucErrTime)
	{
		return (TRUE);
	}
	else
	{
		SysAssert(0);
		return (FALSE);	
	}		
}

//===========================================================================
//Function   :	FMRadioI2CSendByte
//Description: 	发送一字节到I2C
//Syntax     :	UCHAR  FMRadioI2CSendByte(UCHAR ucData)
//Parameters :	UCHAR ucData		要发送的数据
//Return     :	TRUE				发送成功
//				FALSE				发送失败
//Notes      :	NONE
//===========================================================================
UCHAR  FMRadioI2CSendByte(UCHAR ucData)
{
    UCHAR ucCount;

    //开始发送数
    for(ucCount = 0; ucCount < 8; ucCount++)
    {		 
		if( 0 != (ucData & 0x80))
		{
			M_FMRADIOI2C_SDA_SET;
        }
        else
        {
			M_FMRADIOI2C_SDA_CLR;
        }
            
        ucData = ucData<<1;
        
		
        FMRadioI2CDelay(C_FMRadioDelayNum);
        
        M_FMRADIOI2C_SCL_SET;
        
        FMRadioI2CDelay(C_FMRadioDelayNum);
        
        M_FMRADIOI2C_SCL_CLR;  
		
        FMRadioI2CDelay(C_FMRadioDelayNum);
      
    }
    
    //发送结束，开始接收应答
    return (FMRadioI2CWaitAck());
    
}

//===========================================================================
//Function   :	FMRadioI2CReceiveByte
//Description: 	从I2C接收一字节
//Syntax     :	UCHAR  FMRadioI2CReceiveByte(UCHAR ucData)
//Parameters :	UCHAR ucACK 		是否要发送应答位，0表示不需要，1 表示需要
//Return     :	接收到的数据
//Notes      :	NONE
//===========================================================================
UCHAR FMRadioI2CReceiveByte(UCHAR ucSendAck)
{
    UCHAR ucCount;
    UCHAR ucData;
    UCHAR ucMask;
    
    ucData = 0;
    ucMask = 0x80;
    
	//设置SDA为输入模式
	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_IN;
	
	//开始接收数据
    for(ucCount = 0; ucCount < 8; ucCount++)
    {
    	FMRadioI2CDelay(C_FMRadioDelayNum);
    	M_FMRADIOI2C_SCL_SET;      
    	FMRadioI2CDelay(C_FMRadioDelayNum);       
		if(0 != M_FMRADIOI2C_SDA_INPUT_DATA)
		{
			ucData |= ucMask;
		}	
        
        ucMask = ucMask >> 1;
        
        M_FMRADIOI2C_SCL_CLR;     
                
    }
    
    M_FMRADIOI2C_SDA_OUT;

	//判断是否发送应
    if(ucSendAck)
    {
		M_FMRADIOI2C_SDA_SET;	
	}
	else
	{
		M_FMRADIOI2C_SDA_CLR;		
	}	
	
	FMRadioI2CDelay(C_FMRadioDelayNum); 
	M_FMRADIOI2C_SCL_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);     
	M_FMRADIOI2C_SCL_CLR;  
	FMRadioI2CDelay(C_FMRadioDelayNum);  
	
    return ucData;
}
#else
//===========================================================================
//Function   :	FMRadioI2CDelay
//Description: 	用于I2C通讯时的延时
//Syntax     :	void FMRadioI2CDelay(UCHAR ucCount)
//Parameters :	UCHAR ucCount	延时次数
//Return     :	NONE
//Notes      :	NONE
//===========================================================================
void FMRadioI2CDelay(UCHAR ucCount)
{    
    while(ucCount--)
    {
    	;
    }	 
    
}  

//===========================================================================
//Function   :	FMRadioI2CSendStart
//Description: 	发送起始位
//Syntax     :	void FMRadioI2CSendStart(void)
//Parameters :	NONE
//Return     :	NONE
//Notes      :	NONE
//===========================================================================
void FMRadioI2CSendStart(void)
{
	EA = 0;
        
	M_FMRADIOI2C_SCL_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_CLR;
	FMRadioI2CDelay(C_FMRadioDelayNum);        
}
//===========================================================================
//Function   :	FMRadioI2CSendStart
//Description: 	发送起始位
//Syntax     :	void FMRadioI2CSendStart(void)
//Parameters :	NONE
//Return     :	NONE
//Notes      :	NONE
//===========================================================================
void FMRadioI2CSendRepeatStart(void)
{

	M_FMRADIOI2C_SCL_CLR;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SCL_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum); 
	M_FMRADIOI2C_SDA_CLR;
	FMRadioI2CDelay(C_FMRadioDelayNum);         
}
//===========================================================================
//Function   :	FMRadioI2CSendStop
//Description: 	发送停止位
//Syntax     :	void FMRadioI2CSendStop(void)
//Parameters	NONE
//Return     :	NONE
//Notes      :	NONE
//===========================================================================
void FMRadioI2CSendStop(void)
{
	
	M_FMRADIOI2C_SCL_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	EA = 1;

}

//===========================================================================
//Function   :	FMRadioI2CWaitAck
//Description: 	等待应答位
//Syntax     :	UCHAR FMRadioI2CWaitAck(void)
//Parameters :	NONE
//Return     :	TRUE		应答成功
//				FALSE		应答失败
//Notes      :	NONE
//===========================================================================
UCHAR FMRadioI2CWaitAck(void)
{
	
	UCHAR ucErrTime;
	
	//因故障接收方无ACK，超时值为255。
	ucErrTime = 255;
	
	//设置SDA为输入模式
	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_IN;
	FMRadioI2CDelay(C_FMRadioDelayNum);	
	M_FMRADIOI2C_SCL_SET;

	while((0 != ucErrTime) && (0 != M_FMRADIOI2C_SDA_INPUT_DATA))
	{
		ucErrTime--;				
	}
	
	FMRadioI2CDelay(C_FMRadioDelayNum);	
	M_FMRADIOI2C_SCL_CLR;	        
	FMRadioI2CDelay(C_FMRadioDelayNum);	

	//将SDA设置为输出模式
	M_FMRADIOI2C_SDA_OUT;
	FMRadioI2CDelay(C_FMRadioDelayNum);	
	M_FMRADIOI2C_SDA_CLR;
	FMRadioI2CDelay(C_FMRadioDelayNum);    
	if(ucErrTime)
	{
		return (TRUE);
	}
	else
	{
		SysAssert(0);
		return (FALSE);	
	}		
}

//===========================================================================
//Function   :	FMRadioI2CSendByte
//Description: 	发送一字节到I2C
//Syntax     :	UCHAR  FMRadioI2CSendByte(UCHAR ucData)
//Parameters :	UCHAR ucData		要发送的数据
//Return     :	TRUE				发送成功
//				FALSE				发送失败
//Notes      :	NONE
//===========================================================================
UCHAR  FMRadioI2CSendByte(UCHAR ucData)
{
    UCHAR ucCount;

		M_FMRADIOI2C_SCL_CLR;
		FMRadioI2CDelay(C_FMRadioDelayNum);  
	
    //开始发送数
    for(ucCount = 0; ucCount < 8; ucCount++)
    {		 
		if( 0 != (ucData & 0x80))
		{
			M_FMRADIOI2C_SDA_SET;
        }
        else
        {
			M_FMRADIOI2C_SDA_CLR;
        }
            
        ucData = ucData<<1;
        
		
        FMRadioI2CDelay(C_FMRadioDelayNum);
        
        M_FMRADIOI2C_SCL_SET;
        
        FMRadioI2CDelay(C_FMRadioDelayNum);
        
        M_FMRADIOI2C_SCL_CLR;  
		
        FMRadioI2CDelay(C_FMRadioDelayNum);
      
    }
    
    M_FMRADIOI2C_SDA_CLR;
    FMRadioI2CDelay(C_FMRadioDelayNum);
    
    //发送结束，开始接收应答
    return (FMRadioI2CWaitAck());
    
}

//===========================================================================
//Function   :	FMRadioI2CReceiveByte
//Description: 	从I2C接收一字节
//Syntax     :	UCHAR  FMRadioI2CReceiveByte(UCHAR ucData)
//Parameters :	UCHAR ucACK 		是否要发送应答位，0表示不需要，1 表示需要
//Return     :	接收到的数据
//Notes      :	NONE
//===========================================================================
UCHAR FMRadioI2CReceiveByte(UCHAR ucSendAck)
{
    UCHAR ucCount;
    UCHAR ucData;
    UCHAR ucMask;
    
    ucData = 0;
    ucMask = 0x80;
  	ucSendAck = 0;

 	M_FMRADIOI2C_SCL_CLR;
	FMRadioI2CDelay(C_FMRadioDelayNum);  
		  
	//设置SDA为输入模式
	M_FMRADIOI2C_SDA_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);
	M_FMRADIOI2C_SDA_IN;
	
	//开始接收数据
    for(ucCount = 0; ucCount < 8; ucCount++)
    {
    	FMRadioI2CDelay(C_FMRadioDelayNum);
    	M_FMRADIOI2C_SCL_SET;      
    	FMRadioI2CDelay(C_FMRadioDelayNum);       
		if(0 != M_FMRADIOI2C_SDA_INPUT_DATA)
		{
			ucData |= ucMask;
		}	
        
        ucMask = ucMask >> 1;
        
        M_FMRADIOI2C_SCL_CLR;     
                
    }
    
    M_FMRADIOI2C_SDA_OUT;
    M_FMRADIOI2C_SDA_CLR;
    FMRadioI2CDelay(C_FMRadioDelayNum);

	
		M_FMRADIOI2C_SDA_SET;	

	
	FMRadioI2CDelay(C_FMRadioDelayNum); 
	M_FMRADIOI2C_SCL_SET;
	FMRadioI2CDelay(C_FMRadioDelayNum);     
	M_FMRADIOI2C_SCL_CLR;  
	FMRadioI2CDelay(C_FMRadioDelayNum);  
	M_FMRADIOI2C_SDA_CLR;	
	FMRadioI2CDelay(C_FMRadioDelayNum); 
   return ucData;
}
#endif