drvfmradioread.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   : DrvFMRadioRead.c
//  Author     : guoquan
//  Tel        : 
//  Date       : 2005/11/21
//  Description: 从5767中读出5字节
//  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"

#ifdef __FMRadio_5767__
//===========================================================================
//Function   :	DrvFMRadioRead
//Description: 	从5767中读出5字节
//Syntax     :	void DrvFMRadioRead(void)
//Parameters :	NONE
//Return     :	NONE
//Notes      :	NONE
//===========================================================================
void DrvFMRadioRead(void)
{
 	UCHAR ucCount;
 	
 	//清缓冲区
	for(ucCount = 0; ucCount < 5; ucCount++)							
  	{
   		g_ucFMRadioReadData[ucCount] = 0;
  	}
    
    //发送起始位
	FMRadioI2CSendStart();
	
	//发送读数据命令
    if(TRUE == FMRadioI2CSendByte(0xC1))
    {
        //开始接收数据
        for (ucCount = 0; ucCount < 5; ucCount++)
        {
            g_ucFMRadioReadData[ucCount] = (ucCount == 4) ? FMRadioI2CReceiveByte(1) : FMRadioI2CReceiveByte(0);          	
   		} 		   
    }
    
	 //发送停止位
    FMRadioI2CSendStop(); 
              
    FMRadioI2CDelay(C_FMRadioDelayNum); 
}
#endif

#ifdef __FMRadio_NS953__
//===========================================================================
//Function   :	DrvFMRadioRead
//Description: 	从953中读出指定地址中的数据
//Syntax     :	UCHAR DrvFMRadioRead(UCHAR ucAddr)
//Parameters :	UCHAR ucAddr		地址
//Return     :	读出来的数据
//Notes      :	NONE
//===========================================================================
#if 0
UCHAR DrvFMRadioRead(void)
{
	M_FMRADIOREADIO;
	M_FMRADIOREAD_IN;
	return (M_FMRADIOREAD_DATA);	
}
#endif
UCHAR DrvFMRadioReadTest(UCHAR ucAddr)
{
	UCHAR ucData;
	FMRadioI2CSendStart();
	FMRadioI2CSendByte(0xc8);
	FMRadioI2CSendByte(ucAddr);
	FMRadioI2CSendStart();
	FMRadioI2CSendByte(0xc9);
	ucData= FMRadioI2CReceiveByte(0);
    FMRadioI2CSendStop(); 
	sysprintf("ucData =%bx\n", ucData);
	return (ucData);

}

#endif

#ifdef _LV2400_
//===========================================================================
//Function   :	DrvFMRadioRead
//Description: 	从953中读出指定地址中的数据
//Syntax     :	unsigned char DrvFMRadioRead(unsigned char ucAddr)
//Parameters :	unsigned char		地址
//Return     :	读出来的数据
//Notes      :	NONE
//===========================================================================

unsigned char DrvFMRadioRead(unsigned char ucAddr)
{
	unsigned char ucData;

	ucData = 0;

	// Start transfer sequence to the device
	FMRadioI2CSendStart();

	// First write the byReg to the device
	if(TRUE == FMRadioI2CSendByte(LV24200_I2C_ADDR_W))
	{
		// Send the Write Data
		if(TRUE == FMRadioI2CSendByte(ucAddr))
		{
			// Use Repeated Start instead of Stop/Start sequence
			FMRadioI2CSendStop();
			FMRadioI2CSendStart();
		
			// Send device address + read access
			if(TRUE == FMRadioI2CSendByte(LV24200_I2C_ADDR_R))
			{
				// Get the data
				ucData= FMRadioI2CReceiveByte(0);
			}
		}
	}
			
	// End sequence
   	FMRadioI2CSendStop(); 

	return(ucData);
} 
#endif