File content as of revision 0:527aa96336ac:

#include "RDA5807M.h"


int volume;

unsigned int RDA5807M_WriteRegDef[6] ={0xC004,0x0000,0x0100,0x84D4,0x4000,0x0000}; // initial data


RDA5807M::RDA5807M(PinName sda, PinName scl, int addr) : i2c(sda, scl), addr(addr)
{   
    Init();
}

RDA5807M::~RDA5807M()
{
}

void RDA5807M::WriteAll()
{ 
    char buf[30];  
    int i,x = 0;
    for(i=0; i<12; i=i+2){
        buf[i] = RDA5807M_WriteReg[x] >> 8;
        x++;
    }
    x = 0;
    for(i=1; i<13; i=i+2){
        buf[i] = RDA5807M_WriteReg[x] & 0xFF;
        x++;
    }
    i2c.write(0x20, buf, 14);
}

void RDA5807M::Init(){
    int i;
    for(i=0; i<6; i++){
        RDA5807M_WriteReg[i] = RDA5807M_WriteRegDef[i];
    }
}

void RDA5807M::PowerOn(){
    RDA5807M_WriteReg[1] = RDA5807M_WriteReg[1] | 0x0010;
    RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] | RDA_POWER;
    WriteAll();
    RDA5807M_WriteReg[1] = RDA5807M_WriteReg[1] & 0xFFEF;   //Disable tune after PowerOn operation
}

void RDA5807M::PowerOff(){
    RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] ^ RDA_POWER;
    WriteAll();
}

void RDA5807M::Reset(){
    Init();
    PowerOn();
}

void RDA5807M::Volume(int vol){
    if(vol > 15){
        vol = 15;
    }
    if(vol < 0){
        vol = 0;
    }
    RDA5807M_WriteReg[3] = (RDA5807M_WriteReg[3] & 0xFFF0)| vol;   // Set New Volume
    WriteAll();
}

void RDA5807M::BassBoost(){
    if ((RDA5807M_WriteReg[0] & 0x1000)==0){
        RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] | RDA_BASS_ON;
    }
    else{
        RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] & RDA_BASS_OFF;
    }
    WriteAll();
}

void RDA5807M::Mono(){
    if ((RDA5807M_WriteReg[0] & 0x2000)==0){
        RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] | RDA_MONO_ON;
    }
    else{
        RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] & RDA_MONO_OFF;
    }
    WriteAll();
}

void RDA5807M::Mute(){
    if ((RDA5807M_WriteReg[0] & 0x8000)==0){
        RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] | 0x8000;
    }
    else{
        RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] & 0x7FFF;
    }
    WriteAll();
}

void RDA5807M::Softmute(){
    if ((RDA5807M_WriteReg[2] & 0x0200)==0){
        RDA5807M_WriteReg[2] = RDA5807M_WriteReg[2] | 0x0200;
    }
    else{
        RDA5807M_WriteReg[2] = RDA5807M_WriteReg[2] & 0xFDFF;
    }
    WriteAll();
}

void RDA5807M::SoftBlend(){
    if ((RDA5807M_WriteReg[6] & 0x0001)==0){
        RDA5807M_WriteReg[6] = RDA5807M_WriteReg[6] | 0x0001;
    }
    else{
        RDA5807M_WriteReg[6] = RDA5807M_WriteReg[6] & 0xFFFE;
    }
    WriteAll();
}

void RDA5807M::SeekUp(){
    RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] | RDA_SEEK_UP;   // Set Seek Up
    WriteAll();
    RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] & RDA_SEEK_STOP;   // Disable Seek
}

void RDA5807M::SeekDown(){
    RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] | RDA_SEEK_DOWN;   // Set Seek Down
    WriteAll();
    RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] & RDA_SEEK_STOP;   // Disable Seek
}

void RDA5807M::Frequency(float Freq){
    int Channel;
    Channel = (Freq-StartingFreq)/0.1;
    Channel = Channel & 0x03FF;
    RDA5807M_WriteReg[1] = Channel*64 +0x10;  // Channel + TUNE-Bit + Band=00(87-108) + Space=00(100kHz)
    WriteAll();
    RDA5807M_WriteReg[1] = RDA5807M_WriteReg[1] & RDA_TUNE_OFF;
}

void RDA5807M::RDS(){
    if ((RDA5807M_WriteReg[0] & RDA_RDS_ON)==0){
        RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] | RDA_RDS_ON;
    }
    else{
        RDA5807M_WriteReg[0] = RDA5807M_WriteReg[0] & RDA_RDS_OFF;
    }
    WriteAll();
}

void RDA5807M::Read(){
   int i;
   char rcv[12];    
   i2c.read(0x20, rcv,12);   // read 12 bytes for reg 0x0A .. reg 0x0F 
        for(i=0; i<6; i++){
            RDA5807M_ReadReg[i] = ((rcv[i *2] << 8) | rcv [(i*2) +1] );
        }
   
    rdsready = RDA5807M_ReadReg[0] & 0x8000;            //if rdsready != 0 rds data are ready
    tuneok = RDA5807M_ReadReg[0] & 0x4000;              //if tuneok != 0 seek/tune completed
    nochannel = RDA5807M_ReadReg[0] & 0x2000;           //if nochannel != 0 no channel found
    rdssynchro = RDA5807M_ReadReg[0] & 0x1000;          //if rdssynchro = 1000 rds decoder syncrhonized
    stereo = RDA5807M_ReadReg[0] & 0x0400;              //if stereo = 0 station is mono else stereo
    freq = (((RDA5807M_ReadReg[0] & 0x03FF) * 100) + 87000);    //return freq ex 102600KHz > 102.6MHz
    signal = RDA5807M_ReadReg[1] >> 10;                 //return signal strength rssi
    fmready = RDA5807M_ReadReg[1] & 0x0008;             //if fmready = 8 > fm is ready
    fmstation = RDA5807M_ReadReg[1] & 0x0100;           //if fmstation = 100 fm station is true
    rdsblockerror = RDA5807M_ReadReg[1] & 0x000C;       //check for rds blocks errors
                                                        //00= 0 errors,01= 1~2 errors requiring correction
                                                        //10= 3~5 errors requiring correction
                                                        //11= 6+ errors or error in checkword, correction not possible.
}