need help for APR6008 SPI interface

Hi All,

I am making VHF repeater interface for amateur radio, 2m band. I need help to control APR6008 using SPI. I have tried reading datasheet but didnot understand much, google search didnt help much. I want to be able to record and play 16 messages of 30 sec each, or 8 msg. of 1 min.

Any help would be very much appreciated.

See my exsisiting simple repeater interface http://www.vu2bbb.blogspot.com/

Thanks in advance

regards
Mahesh
vu2iia

vu2iia

See PIC iPod wav player

Plays CD quality 44k (8 bit stereo or 16 bit mono) wav files from an SD card.
Up to 512 files or 2 GB.

Project specific parts are about $14.00 (less speaker, 5v regulator, caps, pot, etc.)

Presently in Proton but am porting to PicBasicPro.

Norm

Hi Mahesh

I've not used this particular part, but have used the APR48000 and another similar one. The code is in 8051 C, but if it helps, I have attached it here.

Code:

---

/***********************************************************************\
                APR48000 voice record/playback IC routines
\***********************************************************************/


/* Send a command to the APR48000
  Cmd is the APR Opcode
        Adr is the parameter for the opcode
        Send order is Msb-Lsb
          First the Cmd (Lower 6 bits), then Adr (Lower 15 bits)
        PWRUP (4) (0x2)
        REC  (9)
        PLAY  (D)
        FWD  (3)
        STOP  (6)
*/
void        CommandAPR(byte Cmd, uint Adr) {
byte BitCnt;

        Cmd <<= 3;
        Adr <<= 1;

        APRcs = 0;
        for (BitCnt = 0;BitCnt < 5;BitCnt++){
                APRdi = Cmd & 0x80;
                APRclk = 1;
                Cmd = Cmd << 1;
                APRclk = 0;
        }

        for (BitCnt = 0;BitCnt < 15;BitCnt++){
                APRdi = Adr & 0x8000;
                APRclk = 1;
                Adr <<= 1;
                APRclk = 0;
        }
        APRcs = 1;
}


/***********************************************************************\
                APR48000 voice record/playback IC routines
\***********************************************************************/

---

Thank you norm for your reply. Its an interesting project.

Dear Jerson can I request you to help me convert the code into PBP. Trust me it will help many others like me. Hope u will find some time for it.

regards
Mahesh

I think it is quite straight forward. Anyway, here goes. Unchecked, untested, use at your own risk and consequence

Code:

---

/***********************************************************************\
                APR48000 voice record/playback IC routines
\***********************************************************************/


' Send a command to the APR48000
'      APR_Cmd is the APR Opcode
'        APR_Adr has the parameter for the opcode
'        Send order is Msb-Lsb
'          First the Cmd (Lower 6 bits), then Adr (Lower 15 bits)
'        PWRUP (4) (0x2)
'        REC  (9)
'        PLAY  (D)
'        FWD  (3)
'        STOP  (6)

APR_cs        var  PORTA.0  ' define your own
APR_di        var  PORTA.1  ' define your own
APR_clk        var  PORTA.2  ' define your own

APR_Cmd    var  byte
APR_Adr      var  word
BitCnt:          var  byte


CommandAPR:
        APR_Cmd = APR_Cmd << 3
        APR_Adr = APR_Adr << 1
        APR_cs = 0;

        for BitCnt = 0 to 5
                APR_di = APR_Cmd.7
                APR_clk = 1;
                APR_Cmd = APR_Cmd << 1        ' remove the bit we transferred
                APR_clk = 0;
        next

        for BitCnt = 0 to 15
                APR_di = APR_Adr.15  'unsure of this instruction
                APR_clk = 1
                APR_Adr <<= 1                            ' remove the address bit transferred
                APR_clk = 0
        next

        APRcs = 1;
}


/***********************************************************************\
                APR48000 voice record/playback IC routines
\***********************************************************************/

---

Dar Jerson,

Thank you for helping me getting started, appreciate your time.

mahesh