FTDI cable compatibility

IFixAudio

Hello group,
I have an FTDI 3.3V cable like the one attached and was wondering if it can directly connect to my BS2P.
I have read information about level shifting and inverting but not much about using the cable.
Also, could I use my old green FTDI 3.3V basic USB board from Sparkfun?
I'm pretty sharp with electronics but it's been a while since I've used a Stamp.
Thanks
Jim

DigitalBob

Any specs. on that cable. Looks like a straight wiring harness

DigitalBob

It would have to have some type of FTDI chip in it somewhere.

DigitalBob

Guess I answered my own question. Just run that into a ZT213 line driver to make a BS2 serial adapter.

IFixAudio

I'm not familiar with a ZT213. I am just wondering if I can utilize what I have with a BS2 or is somewhere with a good explaination.

yisiguro

Any FTDI's USB to TTL serial cable has no DTR signal, but only RTS and CTS.
https://www.ftdichip.com/Products/Cables/USBTTLSerial.htm

I am not familiar with BasicStamps, however their document says a DTR signal is required for restarting the BasicStamp module at programming the module.
Then BasicStampEditor will not identify modules and stop programming.
Maybe it is possible to use it as a serial connection for a debug terminal.


On the otherhand it seems that sparkfun ftdi basic has DTR instead of RTS. So it can connect BS2 with appropreate level shift for between BS2 txd and FTDI RXD I think.

DigitalBob

This is the Parallax schematic for the BS2 adapter

DigitalBob

Or look at this one for USB 232