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ChuckT
Registered Member

Date Joined Jan 2008
Total Posts : 12

Posted 10/31/2009 10:05 PM (GMT -8)

I have my bluetoth runnin at 115K to a termal emulator. but when I try to connect it to Viewport it just says no configuration found.
I used the Std terminal config and share lines. I modified conduit to use th eBlue pinouts.
Anyone get this working or have ideas.
Any help is

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Date Joined Oct 2008
Total Posts : 867

Posted 11/1/2009 3:55 AM (GMT -8)

Well, as with all wireless connections, there cannot sim0ply be a straight hookup. I am not familier with bluetooth but I believes it requires a "handshake" code to be sent initially.. Aolso make sure it is running at the same baud rate as the bluetooth is otherwise error will incur.

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Mike Green
Registered Member

Date Joined Oct 2004
Total Posts : 13558

Posted 11/1/2009 6:15 AM (GMT -8)

1) ViewPort, like the program download process, makes use of the way the DTR control line is connected to the Reset pin of the Propeller. It has to be able to force the Propeller to reset.

2) The Baud setting (115200) applies only to the connection from the Bluetooth device to the Propeller or the Bluetooth device to the PC. The actual throughput of the wireless link and the instantaneous transfer rate is often very different since the Bluetooth device buffers the data and may have to repeatedly send a packet of data to ensure accurate delivery. The Propeller's identification and download protocol is too sensitive to timing to tolerate this and I assume that ViewPort is similarly sensitive to the instantaneous transfer rate.

ChuckT
Registered Member

Date Joined Jan 2008
Total Posts : 12

Posted 11/1/2009 3:41 PM (GMT -8)

Thanks for the ideas, I initialized the bluetooth thru my normal duplex connection modified for bluetooth. I configured and tested it for 115K (STD terminal operations). Then I stop my std com cog and start the viewport share process. The Prop fails to send anything. I'm not sure if I didn't get the old process stopped or if the viewport share process needs more work than just changing the pins. Mike, good point even if I can get something going out the viewport may have problems.

Mike Green
Registered Member

Date Joined Oct 2004
Total Posts : 13558

Posted 11/1/2009 4:50 PM (GMT -8)

Again, remember that the Baud set for the Bluetooth adapter has nothing to do with the actual transfer rate over the Bluetooth wireless connection. That depends on the amount of noise around (affecting retries) and the overhead used for the Bluetooth protocol internally.

Hanno
Registered Member

Date Joined May 2007
Total Posts : 447

Posted 11/1/2009 6:48 PM (GMT -8)

Hi Chuck,
(Thanks Mike for the good advice). Programming and resetting the Propeller via bluetooth is probably difficult due to timing issues and the need to reset the Propeller. However, you should be able to write the program to eeprom using a wired link, and then later working with ViewPort. The conduit code detects the baud rate by looking at the start bit's length. The conduit will start out by continually transmitting the configuration string with some binary data. You should be able to see this in a normal terminal. ViewPort looks for the configuration data and then instructs the conduit to send data. Can you provide more info about what works and what's not working?
Hanno

Co-author of the official Propeller Guide- available at Amazon
Developer of ViewPort, the premier visual debugger for the Propeller (read the review here, thread here),
12Blocks, the block-based programming environment (thread here)
and PropScope, the multi-function USB oscilloscope/function generator/logic analyzer

ChuckT
Registered Member

Date Joined Jan 2008
Total Posts : 12

Posted 11/3/2009 1:30 AM (GMT -8)

Thanks guys! Hanno as you say the conduit sends out out a config stream. I can see it over a wired connection. I have never seen it over a the blue tooth.
So I setupo the bluetooth with std fullduplex set the bluetooth to datamode and stop that cog. Then I run share. I modified conduit to use the pins of the bluetooth.
I also tried conduit set for 9600 but still nothing shows up on a normal terminal.

Hanno
Registered Member

Date Joined May 2007
Total Posts : 447

Posted 11/3/2009 11:19 AM (GMT -8)

Hi Chuck,
A while ago I played with a Parallax wireless module, I think it was bluetooth. I'll try to dig it back out and see if I can help. Can you send me what you've done so far by pm?
Hanno

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