need help for APR6008 SPI interface

[vu2iia]

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

[Normnet]

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

[Jerson]

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.

/***********************************************************************\
		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
\***********************************************************************/

[vu2iia]

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

[Jerson]

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

/***********************************************************************\
		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
\***********************************************************************/

[vu2iia]

Dar Jerson,

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

mahesh