Originally Posted by
milestag
I'm working on a modified version of the code, and hope to test it this weekend. I'll be driving the ISD1700 with a PIC16F684 and will post the final (working) code here. So far I am just checking all the commands against the datasheets.
I do have a couple observations.
The SetPlay command should only send SEVEN bytes. The END address is contained within TWO bytes (12 bits). That THIRD address byte (last byte sent) should be set to "0x00" as it is not supported in existing hardware. Same case for SetRecord.
I finally figured out your use of "While CmdError." Had me stumped for a while, then it clicked. That's pretty clever. Though it looks like in some cases it will be better to check the "RDY" status (depending on which command you are sending).
Also I did not realize that you can shift data into a byte using "status, c" carry bit in assembly. That is a very cool trick, indeed! Pretty much all of the other SPI examples I've found for PicBasic just used the Shiftout command which does not allow reading the Status bits.
For anyone interested, the original ISD1700 development kit made by Windbond (which cost me $270 from Digikey last year) does NOT support batch recording of sounds. You have to set the Start and End address manually and record one sound at a time. Very tedious and not usable other than basic function tests. However... there is a NEW ISD1700 development kit made by Nuvoton and it DOES support batch programming of wav files. So it can function as a decent production programmer. Unfortunately it's going to cost me another $270 - ouch. I called tech support at Nuvoton and they confirmed the new software is NOT compatible with the original Winbond development hardware.
You should also be aware that the Quadravox QV400D programmer never added support for the ISD1700 series. I still use it for programming ISD2560 chips, but they are starting to get expensive and much harder to find.
ISD17240PY Project
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