Couple Memory Stick Datalogger to Propellor Questions

crgwbr

1. Do I need a level shifter (3.3v to 5v) between tx and rx?
2. What should I do with the flow control pins since I'm not using them (UART mode)
3. Anyone have any UART mode Test code for it?
4. Does the LED on it normally Flash Red and Green? If not, why is it doing this?

Thanks, I looked through the docs for the answers to these question, but I couldn't find any answers.

Thanks Again,
Craig

P.S. I wish Parallax would start posting test code for the Prop (instead of just the BS2) on items like this. It would help a lot.

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"... one of the main causes of the fall of the Roman Empire was that, lacking zero, they had no way to indicate successful termination of their C programs." -

"If Python is executable pseudocode, then perl is executable line noise."

"The best accelerator available for a Mac is one that causes it to go at 9.81 m/s2."

"My software never has bugs. It just develops random features."

"Windows isn't a virus, viruses do something."

"Programmers are tools for converting caffeine into code."

"Enter any 11-digit prime number to continue."

Mike Green

1) No. The datalogger is a 3.3V device that's 5V tolerant
2) You have to tie CTS# low or the Vinculum won't talk to you
3) I don't have a link to it, but I posted a test program for the VDIP1
some time ago that used SPI mode and I think I posted a UART version
of the same thing later in the thread. There's a version of BoeBotBasic
that I posted in a thread in the Completed Projects section on a sound
installation player. This uses UART mode to talk to a VMusic2 which is
the same thing as the datalogger, just with an MP3 player included.
4) I think the red LED is transmit data and the green LED is received data

crgwbr

Thanks Mike, you always seem to have the answers I need. I'm curious though, do you mean USB transmit and receive? Because, I think that even when nothing is plugged in (no flash drive) it blinks. But at the same time, its definitely not talking to the propeller when they flash.

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"... one of the main causes of the fall of the Roman Empire was that, lacking zero, they had no way to indicate successful termination of their C programs." -

"If Python is executable pseudocode, then perl is executable line noise."

"The best accelerator available for a Mac is one that causes it to go at 9.81 m/s2."

"My software never has bugs. It just develops random features."

"Windows isn't a virus, viruses do something."

"Programmers are tools for converting caffeine into code."

"Enter any 11-digit prime number to continue."

Mike Green

I'm not sure about the use of the LEDs. It would be easy enough to check the schematic for the VDrive2. I imagine Parallax used something very similar.