ISD1700 series Winbond chipcorder

[JoelPIC]

Hey guys,

I'm new here, but you seem like you have some experience working with the ISD17000 chipcorder series.

I've been having luck communicating with the chipcorder over the SPI interface; however, I'm having one BIG issue.

My PIC controls two chipcorders and while one is recording, the other one is playing back. It works fine, usually for about 5 minutes, at which point the play command continues to work, but it's no longer records. I can tell visually because I have the LED option enabled.

The only way to get it to work again is to do a hardware reset, then a hardware global erase. If I try these same commands via SPI, it doesn't work.

I guess my questions are this:

1) Has anyone see this behavior, where the "record command" (0x41) seems to just not work after a few minutes?

2) I notice that once the record stops working, the CMD_ERR bit does get set. But does this really even do any good? It tells you there's a problem but there's no way to get the thing reset and working again... except for that hardware reset / global erase thing I mentioned earlier.

Any help is greatly appreciated.

Thx,

Joel

[ams0178]

Hi Joel,

It looks like you're farther along than I am. After a 9 month period of inactivity I'm finally starting to program my PIC and trying to get the ISD1700 up and running. (FYI, it's hard to do hobbies when you're writing a Master's Thesis and moving cross country to start a new job, haha.)

But my initial efforts to get the SPI communications working have been unsuccessful. What PIC are you using? I'm using the PIC16F887. Would you mind posting your code settings?

Any luck with the bugs you were having? Maybe if I can get up to speed, we can tackle this as a team.

Thanks, Alan

[ams0178]

Hi Joel,

This forum thread might help, although they do all their SPI commands via bit banging. Good luck

http://www.picbasic.co.uk/forum/show...6106#post86106

Alan

[ams0178]

Hi Joel,

I think I might have an answer for you if you're still working through your issue. I have my ISD1700 and PIC recording and playing. I also had the same issue where it appears to stop working. One of the things I realized is that if I send a record command or play command that blinks the LED, if I send a read status without the fourth bit enabled for the LED, the LED will not come on or blink for the record and play respectively. So I realized that the chip was still recording although the LED wasn't playing. Any new command you send should set the fourth bit to keep the LED working.

How's the programming coming for you?

Alan