SI4730收音机芯片资料与程序教案资料

1、Good is good, but better carries it.精益求精，善益求善。SI4730收音机芯片资料与程序SI4730收音机芯片资料与程序2010-03-0612:50/*在网上看到关于这个SI4730的收音机芯片的资料比较少，所以现在特发上来，共有缘人参考，如有不对之处，请指出。！晶振：24MHz单片机:at89s52注：转载请注明出处，否则追究法律责任！日期：2010-03-06版本：v1.0设计者：swsSI4730资料下载地址：HYPERLINK/file/f6de4b58f/file/f6de4b58f*/#includereg52.h#includeintrins

2、.htypedefunsignedcharuchar;typedefunsignedintuint;#defineHIGH1#defineLOW0#defineSI4730_HIGH/4730选择地址定义/#defineSI4730_LOW#defineMax_freq_FM10800/108MHz#defineMin_freq_FM8750/87.5MHz#definemax_freq_AM1701/1701KHz#definemin_freq_AM531#defineFM_RECEIVER0 x20/FM调谐频率page.52#defineFM_TRNSMITTER0 x30#define

3、AM_RECEIVER0 x40/AM调谐频率#defineTX_TUNE_MEASURE0 x32uintFrequency_fm=875;uintFrequency_am=531;bitMode=0;sbitKEY_UP=P22;/向上搜台sbitKEY_DW=P23;/向下搜台sbitFM_AM_Choose=P24;/FM与AM选择bitFM_AM_=0;/*STARTcondition:SCLK:|_SDIO:|_1|2|3STOPcondition:SCLK:_|SDIO:_|1|2|3DATA:SCLK:_|_|_SDIO:_|_|RESET:SENB:_|SDIO:_|RST:

4、_|SCLK:_|1|2|3*/sbitSi4730_Reset=P13;sbitSi4730_SCLK=P12;sbitSi4730_SDIO=P11;/如果SI4730的第六脚（SEN）接高电平那么地址是0 x23,0 x22/如果SI4730的第六脚（SEN）接低电平那么地址是0 xc7,0 xc6/#if0/addressswitch#ifdefSI4730_LOW#defineREAD_ADDR0 x23#defineWRITE_ADDR0 x22#endif#ifdefSI4730_HIGH#defineREAD_ADDR0 xc7#defineWRITE_ADDR0 xc6#en

5、dif#defineSCLK_HIGHSi4730_SCLK=HIGH#defineSCLK_LOWSi4730_SCLK=LOW#defineSDIO_HIGHSi4730_SDIO=HIGH#defineSDIO_LOWSi4730_SDIO=LOW#defineREAD_SDIOSi4730_SDIO/=FMSTART=void_NOP()_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();voidSi4730_Delay(unsignedchark)uchari,j;for(i=150;i0;i-)for(j=k;j0;j-);#define

6、I2C_CLK_Delay()_NOP()voidResetSi47XX_2w()Si4730_Reset=LOW;SCLK_HIGH;Si4730_Delay(100);SDIO_HIGH;Si4730_Delay(250);Si4730_Reset=HIGH;voidSi4730_start()SDIO_HIGH;I2C_CLK_Delay();SCLK_HIGH;I2C_CLK_Delay();SDIO_LOW;I2C_CLK_Delay();SCLK_LOW;voidSi4730_ack()SDIO_LOW;I2C_CLK_Delay();SCLK_HIGH;I2C_CLK_Delay

7、();SCLK_LOW;I2C_CLK_Delay();SDIO_HIGH;voidSi4730_stop()SDIO_LOW;I2C_CLK_Delay();SCLK_HIGH;I2C_CLK_Delay();SDIO_HIGH;I2C_CLK_Delay();SCLK_LOW;voidSi4730_writebyte(ucharwrite_data)uchari;for(i=8;i!=0;i-)/循环移入8个位READ_SDIO=(bit)(write_data&0 x80);SCLK_HIGH;I2C_CLK_Delay();SCLK_LOW;/SDA数据线上数据变化write_data

8、=1;/调整发送位voidOperation_Si4730_Write(uchar*data1,ucharnumByte)ucharj;Si4730_start();Si4730_writebyte(WRITE_ADDR);/器件地址0 xc6Si4730_ack();I2C_CLK_Delay();for(j=LOW;j=300mSSi4730_Delay(250);Si4730_Delay(250);Si4730_Delay(120);voidSi4730_Tune(charmod,unsignedshortChannel_Freq)unsignedcharwrite_buf5;write

9、_buf0=mod;write_buf1=0 x00;write_buf2=Channel_Freq8;/写入高字节write_buf3=Channel_Freq;/写入低字节write_buf4=0 x00;Operation_Si4730_Write(&(write_buf0),5);voidSearch_FM()/调用手动FM频率调整子程序menu=15if(Mode)Frequency_fm+=10;/步进+0.1MHzif(Frequency_fmMax_freq_FM)Frequency_fm=Min_freq_FM;elseFrequency_fm-=10;/步进-0.1MHzi

10、f(Frequency_fm8;/写入高字节write_buf3=Channel_Freq;/写入低字节write_buf4=0 x00;write_buf5=0 x00;Operation_Si4730_Write(&(write_buf0),6);voidSearch_AM()/调用手动FM频率调整子程序menu=95if(Mode)Frequency_am+=9;/步进+9KHzif(Frequency_ammax_freq_AM)Frequency_am=min_freq_AM;elseFrequency_am-=9;/步进-9KHzif(Frequency_ammin_freq_AM

11、)Frequency_am=max_freq_AM;/Si4730_Power_Up(AM_RECEIVER);/向上搜台Si4730_Tune_AM(AM_RECEIVER,Frequency_am);/AM收音芯片数据刷新一次/=amend=/=mainstart=voidmain()Si4730_Delay(250);Si4730_Power_Up_FM_AM_Choose(FM_RECEIVER);/默认选择fmwhile(1)if(!FM_AM_Choose)Si4730_Delay(100);if(!FM_AM_Choose)FM_AM_=FM_AM_;if(!FM_AM_)Si4730_Power_Up_FM_AM_Choose(FM_RECEIVER);/fm选择elseif(FM_AM_)Si4730_Power_Up_FM_AM_Choose(AM_RECEIVER);/am选择if(!FM_AM_)/ResetSi47XX_2w();if(!KEY_UP)Si4730_Delay(100);if(!KEY_UP)Mode=HIGH;/向上搜台Search_FM();if(!KEY_DW)Si4730_Delay(100);if(!KEY_DW)Mode=LOW;/向下搜台