si4702.h

这段代码是驱动SI4702收音IC

#ifndef	__SI4702_H__
#define __SI4702_H__


#include <BasType.h>

//UINT16 g_CurFreq=875;

#define SI4702_RST_1()	sfr_GPIOB_DATA |=0x04;
#define SI4702_RST_0()	sfr_GPIOB_DATA &=0xFb;

#define SI4702_SEN_1()	sfr_GPIOB_DATA |=0x10;
#define SI4702_SEN_0()	sfr_GPIOB_DATA |=0xEF;

#define SI4702_SCLK_1()	sfr_GPIOB_DATA |=0x40;
#define SI4702_SCLK_0()	sfr_GPIOB_DATA &=0xbf;

#define SI4702_SDIO_1()	sfr_GPIOB_DATA |=0x80;
#define SI4702_SDIO_0()	sfr_GPIOB_DATA &=0x7f;

#define SI4702_adr 	0x20

#define Freq_US_min 		875// us band  low limit
#define Freq_US_max		1080//us band high limit

#define STep_100k	1//100k step
#define 	Direction_UP		1
#define 	Direction_Down		0

void SI4702_Select_2wire();
void SI4702_Init();
void SI4702_SetCurFreq(UINT16 Freq);
void SI4702_ChangeCurFreq(UINT8 Direct);
void SI4702_Read();
bit  SI4702_AutoChangeFreq(UINT8 Direct);
bit  SI4702_Scan();
//void SI4702_close();
UINT8 FM_TaskEntrance(void);
void Si4702_WriteChan(UINT8 iChan);
void BubbleSort(UINT8 *pData1,UINT8 *pData2,UINT8 Count) ;
bit AutoChangeFreq(UINT8 Direct);
void Get_Chan(UINT8 chan);
void Progressively_Volume(UINT8 Volumetemp);
#endif