RDA5807m+IIC收音機51單片機C程序文件

/RDA5807m驅動程序+IIC程序/******************************************************************************************介紹:RD5807M收音機程序供電3.3v主控使用51單片機顯示使用LCD1602**作者:胖子**時間：2016-1-5**地點：XX電子科技大學*****************************************************************************************/#include<reg51.h>#include<string.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint#defineulintunsignedlongint#definelintlongintucharcodexian[4][4]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16};ucharcodehang[]={0xfe,0xfd,0xfb,0xf7};//矩陣鍵盤掃描使用//RDA的寄存器地址#defineRDA_R00 0X00//讀出16個位的ID=0X5800#defineRDA_R02 0X02//DHIZ[15],DMUTE[14]靜音,MONO[13]聲道,BASS[12]重低音,SEEKUP[9],SEEK[8],SKMODE[7],CLK_MODE[6:4]時鐘源選擇,SOFTRESET[1]軟復位,ENABLE[0]電源使能#defineRDA_R03 0X03//CHAN[15:6],TUNE[4],BAND[3:2],SPACE[1:0]設置頻率帶寬步長#defineRDA_R04 0X04//STCIEN[14],DE[11],I2Senable[6],#defineRDA_R05 0X05//INT_MODE[15],SEEKTH[14:8]<設定自動搜索信號強度閥值>,LNA_PORT_SEL[7:6]=0b10,LNA_ICSEL_BIT[5:4],VOLUME[3:0]音量;#defineRDA_R0A 0X0A//STC[14]seekcompleteSF[13]seekfailreadchan[9:0]當前頻道#defineRDA_R0B 0X0B//RSSI[15:9],FMTRUE[8]當前頻道是一個節(jié)目臺#defineRDA_READ0X23//讀RDA5807#defineRDA_WRITE 0X22//寫RDA5807//IO操作函數(shù)sbitSDA=P2^1;sbitSCL=P2^0;sbitRW=P1^1;sbitRS=P1^0;sbitEN=P2^5;ucharcodea[]="FM:.";ucharcodeb[]="Vol:RSSI:";ucharcodeshu[]="0123456789";ucharnum;voiddelayms<uintx> //延遲程序{uinti,j; for<i=x;i>0;i--> for<j=113;j>0;j-->;}/***********************************************矩陣鍵盤程序********************************************************************/ucharScanKey<> //矩陣鍵盤掃描返回值是當前按鍵數(shù)值如沒按下則返回值為零{ uintx,y;for<x=0;x<4;x++> {uchartemp,gaowei; P3=hang[x]; //分行置零 temp=P3&0xf0; if<temp!=0xf0> { delayms<10>; if<temp!=0xf0> { gaowei=P3/16;//判斷是第幾列的按鍵按下,將數(shù)據(jù)裝入高四位 switch<gaowei> { case0xe:y=0;break; case0xd:y=1;break; case0xb:y=2;break; case0x7:y=3;break; } while<temp!=0xf0> { temp=P3&0xf0; } returnxian[x][y]; } } } return0;}/*******************************************************LCD1602程序************************************************************************/voidwrite_com<unsignedcharcom>{RS=0;P0=com;delayms<5>;EN=1;delayms<5>;EN=0;}voidwrite_data<unsignedchardate>{RS=1; P0=date; delayms<5>; EN=1; delayms<5>; EN=0;}voidinit_1602<>{ P0=0xc0; RW=0;EN=0;write_com<0x38>;//éè??16*2??ê?￡?5*7μ??ó￡?8??êy?Y?úwrite_com<0x0c>;//éè???a??ê?￡?2???ê?1a±êwrite_com<0x06>;//D′ò???×?·?oóμ??·?????ó1write_com<0x01>;//??ê???á?￡?êy?Y??????á?}voidDisplayFrq<floatFrq> //顯示頻率{ uintF; F=Frq*10; write_com<0x80+3>; write_data<shu[F/1000]>; delayms<1>; write_data<shu[F/100%10]>; delayms<1>; write_data<shu[F/10%10]>; delayms<1>; write_com<0x80+7>; write_data<shu[F%10]>; delayms<1>;}voidDisplayVol<uintVol> //顯示音量{ write_com<0x80+0x40+4>; write_data<shu[Vol/10]>; delayms<1>; write_data<shu[Vol%10]>; delayms<1>;}voidDisplay_mute<> //顯示靜音{ write_com<0x80+0x40+4>; write_data<'x'>; delayms<1>; write_data<'x'>; delayms<1>;}voidDisplay_RSSI<uintRSSI> //顯示信號強度{ write_com<0x80+0x40+14>; write_data<shu[RSSI/10]>; delayms<1>; write_data<shu[RSSI%10]>; delayms<1>;}/*IIC通信程序*/voidIIC_delayms<>//用于IIC延時{ _nop_<>;_nop_<>;_nop_<>;_nop_<>;}voidOpenIIC<> //IIC啟動信號{ SDA=1; SCL=1; IIC_delayms<>; SDA=0; IIC_delayms<>; SCL=0;}voidCloseIIC<> //IIC停止信號{ SCL=0; SDA=0; IIC_delayms<>; SCL=1; SDA=1; IIC_delayms<>;}ucharIIC_Wait_Ack<void> //IIC發(fā)送字節(jié)后等待從機發(fā)送響應信{ ucharucErrTime=0; SDA=1; IIC_delayms<>; SCL=1; IIC_delayms<>; while<SDA==1> { ucErrTime++; if<ucErrTime>250> { CloseIIC<>; return1; } } SCL=0; return0;}voidIIC_Ack<void> //發(fā)送應答信號{ SCL=0; SDA=0; //0±íê?ó|′e IIC_delayms<>; SCL=1; IIC_delayms<>; SCL=0;}voidIIC_NAck<void> //IIC非應答信號{ SCL=0; SDA=1; IIC_delayms<>; SCL=1; IIC_delayms<>; SCL=0;} voidIICsendByte<uchartxd> //IIC·寫一個字節(jié){uchart;SCL=0;for<t=0;t<8;t++>{ if<<<txd&0x80>>>7>==1> SDA=1; else SDA=0;txd<<=1; IIC_delayms<>; SCL=1; IIC_delayms<>; SCL=0; IIC_delayms<>;} } ucharIICReadByte<unsignedcharack>//IIC讀一個字節(jié){ unsignedchari,receive=0; SDA=1; //51單片機講引腳置高可設為輸入引腳for<i=0;i<8;i++> { SCL=0; IIC_delayms<>; SCL=1; receive<<=1; if<SDA==1>receive++; IIC_delayms<>;} if<!ack>IIC_NAck<>;elseIIC_Ack<>;returnreceive;}uintReadReg<ucharregAddr> //芯片讀寄存器{ uintbuf; OpenIIC<>; IICsendByte<RDA_WRITE>; //發(fā)送芯片地址方向為寫 IIC_Wait_Ack<>; IICsendByte<regAddr>; //發(fā)送寄存器地址 IIC_Wait_Ack<>; OpenIIC<>; IICsendByte<RDA_READ>; //發(fā)送芯片地址方向為讀 IIC_Wait_Ack<>; buf=IICReadByte<1>; buf=buf<<8; buf=buf|IICReadByte<0>; CloseIIC<>; returnbuf;}voidWriteReg<ucharregAddr,uintval>//芯片寫寄存器{ OpenIIC<>; IICsendByte<RDA_WRITE>; //發(fā)送芯片地址方向為寫 IIC_Wait_Ack<>; IICsendByte<regAddr>; //發(fā)送寄存器地址 IIC_Wait_Ack<>; IICsendByte<val>>8>; IIC_Wait_Ack<>; IICsendByte<val&0XFF>; IIC_Wait_Ack<>; CloseIIC<>;}voidVol_Set<ucharvol> //音量設置 0~15{ uinttemp=0; temp=ReadReg<RDA_R05>; temp&=0xfff0; WriteReg<0x05,vol|temp>; }voidMute_Set<ucharmute> //靜音設置1為靜音 0為不靜音{ uinttemp=0; temp=ReadReg<0X02>; if<!mute>temp|=1<<14; elsetemp&=~<1<<14>; WriteReg<0X02,temp>; }voidBass_Set<ucharbass> //頻帶設置{ uinttemp=0; temp=ReadReg<0X02>; if<bass>temp|=1<<12; elsetemp&=~<1<<12>; WriteReg<0X02,temp>; }ucharRssi_Get<void> //信號強度獲取 0~63{ uinttemp=0; temp=ReadReg<0X0B>; temp=<temp>>9>&0x7f; returntemp;}voidSeekth_Set<uintrssi> //自動搜臺信號閾值強度 0~15默認為8數(shù)值越低搜到的臺越多{ uinttemp; rssi=rssi&0xf; temp=ReadReg<0X05>; temp&=~<0xf<<8>; temp|=rssi<<8; WriteReg<0X05,temp>; }voidSeek_direction<uchardirection>//搜臺方向1向上搜索0向下搜索{ uinttemp; temp=ReadReg<RDA_R02>; temp&=~<1<<9>; if<direction==1> temp|=1<<9; // if<direction==0>// temp|=0<<9; WriteReg<0X05,temp>; }voidFreq_Set<uintfreq> //頻率設置單位是：10KHz6500~10800{ uinttemp; ucharspc=0,band=0; uintfbtm,chan; temp=ReadReg<0X03>; temp&=0X001F; band=<temp>>2>&0x03; spc=temp&0x03; if<spc==0>spc=10; elseif<spc==1>spc=20; elsespc=5; if<band==0>fbtm=8700; elseif<band==1||band==2>fbtm=7600; else { fbtm=ReadReg<0X53>; fbtm*=10; } if<freq<fbtm>return; chan=<freq-fbtm>/spc; chan&=0X3FF; temp|=chan<<6; temp|=1<<4; WriteReg<RDA_R03,temp>; delayms<20>; // while<<ReadReg<0X0B>&<1<<7>>==0>;}unsignedintseek_channel<void>//半自動搜臺{ unsignedlongtemp; temp=ReadReg<RDA_R02>; temp|=<1<<8>; WriteReg<RDA_R02,temp>; //SEEK位置一使能自動搜臺 while<<ReadReg<RDA_R0A>&<1<<14>>==0>//等待STC位置一表示搜索完成 { delayms<10>;//?óê±10ms } temp=<<ReadReg<RDA_R0A>&0x3FF>*100000+87000000>/10000;//獲取當前頻率 returntemp;//返回搜到電臺頻率單位是：10Khz }voidFM_enable<ucharflag> //1使能芯片0禁用芯片{ uinttemp; temp=ReadReg<RDA_R02>; if<flag==1> temp|=1; if<flag==0> temp&=~0x1; WriteReg<RDA_R02,temp>; }voidRDA_Init<void> //RDA3?ê??ˉ{ WriteReg<RDA_R02,0x0002>;//軟復位 delayms<30>; WriteReg<RDA_R02,0xd081>;//?§??????32.768Khz?òé????÷??μíò?á￠ì?éùSKMODE=1???÷μ?±??μê±í￡?1 WriteReg<RDA_R03,0x0000>;//?μ?êéè?a87MHz￡?2???100Khz?μ′??a87M~108M WriteReg<RDA_R04,0x0040>;//?ù±????? WriteReg<RDA_R05,0X8882>;//ò?á?éè???avol=2???÷·§?μ?a8 FM_enable<1>;//??D???é?μ? Seekth_Set<8>; //自動搜臺信號閾值強度 0~15默認為8數(shù)值越低搜到的臺越多}voiddisplay_1602<>{ write_com<0x80>; for<num=0;num<34;num++> { write_data<a[num]>; delayms<5>; } write_com<0x80+0x40>; for<num=0;num<34;num++> { write_data<b[num]>; delayms<5>; }}voidmain<>{ unsignedcharKey_num=0,Vol=1,RSSI=0,mute=1; unsignedintRXFreq=8830,time=0; unsignedintDiantai[40]={8830}; charNum=0,station=1; unsignedinttest=7896; unsignedinttemp=10; init_1602<>; display_1602<>; RDA_Init<>; //RDA5807初始化 Freq_Set<8830>;//頻率設置 Vol_Set<2> ; DisplayFrq<88.3>; DisplayVol<2>; //顯示音量 while<1> { time++; if<time>1000> Display_RSSI<Rssi_Get<>>;//顯示信號強度 Key_num=ScanKey<>; switch<Key_num> { case1:{ if<RXFreq==8800>RXFreq=8800;//頻率減 elseRXFreq-=10; Freq_Set<RXFreq>; DisplayFrq<RXFreq/100.0>; while<0!=ScanKey<>>; //按鍵釋放 break; } case2:{ if<RXFreq==10800>RXFreq=10800;//頻率加 elseRXFreq+=10; Freq_Set<RXFreq>; DisplayFrq<RXFreq/100.0>; while<0!=ScanKey<>>; //按鍵釋放 break; } case5:{ //聲音減 if<Vol==0> Vol=0; else Vol-=1; Vol_Set<Vol>; DisplayVol<Vol>; //顯示音量 while<0!=ScanKey<>>; //按鍵釋放 break; } case6:{ if<Vol==15>Vol=15; //聲音加 elseVol+=1; Vol_Set<Vol>; DisplayVol<Vol>; //顯示音量 while<0!=ScanKey<>>;//按鍵釋放 break; } case7:{ if<mute==1> //靜音 { Mute_Set<1>; Display_mute<>; //顯示靜音 while<0!=ScanKey<>>;//按鍵釋放 mute=0; break; } if<mute==0> { Mute_Set<0>; DisplayVol<Vol>;//取消靜音顯示音量 mute=1; } while<0!=ScanKey<>>; break; } case9:{ //電臺減但是必須先按9進行電臺搜索 while<0!=ScanKey<>>; //按鍵釋放 Seek_direction<0>; //向下搜索 RXFreq=seek_channel<>; //搜索下一個頻道 Freq_Set<RXFreq>; DisplayFrq<RXFreq/100.0>; break; } case10:{ //電臺加但是必須先按11進行電臺搜索 while<0!=ScanKey<>>; //按鍵釋放 Seek_direction<1>; //向上搜索 RXFreq=seek_channel<>; //搜索下一個頻道 Freq_Set<RXFreq>; DisplayFrq<RXFreq/100.0>; break; } default:break; } }}// case9:{ //電臺減但是必須先按11進行電臺搜索// if<station==0>break; // if<Num>0>Num-=1;// elseNum=station-1; // Freq_Set<Diantai[Num]>;// DisplayFrq<Diantai[Num]/100.0>;// RXFreq=Diantai[Num];// Display_now<1> ; //顯示當前電臺號// while<0!=ScanKey<>>; //按鍵釋放 // break;// }// case