Pic+isd4002

[eyalf]

hi fellows,

i'm new to this forum, and thank you for being there.
before i elaborate more,
has anyone wokred with the PIC as a controller of the ISD4002 (or of the 4000 series) chipcorder? if so, can i verify the I/O pind between the two devices with you?

thanks, and a very merry xmas,

eyal.

[mister_e]

For sure you can, simply post the exact things you're looking for

[eyalf]

hi Steve,

thanx for the reply.

so:
as far as i can tell, connection-wise, there should be 4 pins connecting the PIC and the chipcorder.

from the PIC: RB4/5/6/7 (pins # 10-13).
from the ISD: SS, SCLK, MOSI, MISO (pins # 1,2,3, 28).

could you (or anyone else) verify that from your knowledge or experience?

also, the non-programmer that i am, I want to use JAL to do the coding. I've used it sporadically before, but never with the microcontroller AND a sound chip. would anyone have suggestions/shortcuts/no-no's before i sink in?

thanks again, and try to stay in high places :-O
eyal.

[mister_e]

Your pinout can be almost everything ther since i don't know wich PIC you'll be using for this project.

The important part for the code... JAL... i don't know that, never heard about it, so i can't help with anything on that.

I, and most here, use Melabs PICBASIC PRO v2.45.

BUT i've some ISD4002 somewhere here under the dust. I buy those several years ago and i think it's now the time for me to give a try with them. I'll let you know when something will work.

[eyalf]

thanks Steve,

the pic i'm using is the 16f876. JAL (Just Another Language) is a cute little Assembler-based code and compiler.
try http://www.voti.nl/jal/. I just never tried it with a chipcorder.

[mister_e]

i just have a really fast look to this. Try to find something in JAL who can gives you SPI or Microwire protocol read/write. That's all i can tell you for now. BTW i'm begining in a few hours some code line to do some playback/record from this chip.

You can give a try with the free PBP compiler on http://www.compilespot.com/startdemo.htm too.

i agree it's a bit limited, but that way, everybody here will be able to help you for your project.

[eyalf]

I'll try, Steve, thanx.

[julioelectronic]

i need a correct interface to connect 16f877a and isd4002

[mister_e]

Just a teaser. I'll not post the whole thing, just the pin assignement.

    ' LCD definition
    ' ==============
    ' 
    DEFINE LCD_DREG PORTA  ' 
    DEFINE LCD_DBIT 0      ' LCD data port : PORTA<3:0>
                           '
    DEFINE LCD_EREG PORTA  ' 
    DEFINE LCD_EBIT 6      ' LCD enable bit : PORTA.6
                           '
    DEFINE LCD_RSREG PORTA ' 
    DEFINE LCD_RSBIT 7     ' LCD RS bit : PORTA.7


    ' I/O Definition
    ' ===============
    '
    TRISA = %00110000    ' PORTA Output on :
                         '         PORTA<3:0> : LCD data 
                         '         PORTA<7:6> : LCD RS & E bit
                         '
                         ' PORTA Input on :
                         '         PORTA.4 : "ALT PLAY" Button
                         '         PORTA.5 : "PLAY" button    
                         '
    TRISB = %11110001    ' PORTB Output on : 
                         '         PORTB.1 : ISD4002 SS pin 
                         '         PORTB.2 : ISD4002 SCLK pin 
                         '         PORTB.3 : ISD4002 MOSI pin
                         '
                         ' PORTB Input on :
                         '         PORTB.0 : ISD4002 INT pin
                         '         PORTB.4 : ISD4002 MISO pin
                         '         PORTB.5 : ISD4002 RAC pin
                         '         PORTB.6 : "SETUP" button
                         '         PORTB.7 : "RECORD" button
    OPTION_REG.7 = 0     ' enable pull-up on PORTB
    CMCON = 7            ' disable analog comparator
    
    
    ' Variable definition
    ' ===================
    '
    AltPlay              var PORTA.4 ' "ALT PLAY" button
    Play                 var PORTA.5 ' "PLAY" button
    Setup                var PORTB.6 ' "SETUP" button
    Record               var PORTB.7 ' "RECORD" button
    INT                  var PORTB.0 ' ISD4002 INT pin
    SS                   var PORTB.1 ' ISD4002 SS pin
    SCLK                 var PORTB.2 ' ISD4002 SCLK pin
    MOSI                 var PORTB.3 ' ISD4002 MOSI pin
    MISO                 var PORTB.4 ' ISD4002 MISO pin
    RAC                  var PORTB.5 ' ISD4002 RAC pin

Was setup on 16F628, you'll need to use SHIFTIN/SHIFTOUT

[anderson037]

The melabs LAB-XT board has a socket for this family of ISD chip. You can download the schematic and sample code:

http://melabs.com/products/labxt.htm

[julioelectronic]

I watch the circuit that you recommended to me anderson , but the only thing that my circuit do, are sounds when pic send the pulses to isd, good i will continue treating, thanks for the help.

[mister_e]

http://www.picbasic.co.uk/forum/sear...searchid=56714

[julioelectronic]

ok amigos it works, my error was software, ss enable/ disable.

[leejongfan]

Hi,
I am using PIC16f877
I think we have to program in SPI mode,right?
for SPI, we only can send 8 bit at one time, but the opcode need 16 bits.
Am I right to say we cannot use PIC16f877

[angie14]

hi, i want to know how to program a ISD 4002 to record some files and play them

[mister_e]

there's plenty code example in here for various ISD chips, read the according datasheet along with existing code example, and you should be good.

Case not, provide YOUR OWN code example in here and someone might give more hints.

[peterdeco1]

I work with the ISD5008 mostly. You can send 16 bits like this: ShiftOut PORTC.5,PORTC.3,0,[9021\16] 'RECORD CONFIG0

[angie14]

currently I made the next circuit

i found in this page http://hem.passagen.se/communication/speach.html
and I find the next firm for the pic

#include <REGX52.H>

#include <string.h>

#include <stdio.h>

#include <absacc.h>

#include <intrins.h>

sbit ss=P1^0;

sbit mosi=P1^1;

sbit sclk=P1^4;

void delay_ms(unsigned int ms)

{

unsigned char i;

while(ms--)

{

i=112;

while(i--);

}

}

void spi_mosi(unsigned char spi_data)

{

unsigned char BitCnt;

mosi=0;

sclk=0;

for(BitCnt=0;BitCnt<8;BitCnt++)

{

sclk=0;

_nop_();

if((spi_data>>BitCnt)&0x01)

mosi=1;

else

mosi=0;

_nop_();

_nop_();

_nop_();

sclk=1;

_nop_();

_nop_();

_nop_();

}

_nop_();

_nop_();

_nop_();

}

void play_isd4002(unsigned int addr)

{

unsigned char addr_l,addr_h;

addr_l=addr;

addr_h=addr>>8;

addr_h=addr_h|0xe0;

ss=0;

spi_mosi(0x20);

ss=1;

delay_ms(50);

ss=0;

spi_mosi(addr_l);

spi_mosi(addr_h);

ss=1;

delay_ms(10);

ss=0;

spi_mosi(0xf0);

ss=1;

}

void stop_isd4002()

{

ss=0;

spi_mosi(0x70);

ss=1;

delay_ms(50);

}

void main()

{

play_isd4002(0x86);

}

but i can't record the file... so I need a correct configuration for the ISD4002 ...thanks