BS2px on BOEusb and PSC connection problem

RickyC · 2006-09-23 03:46

Allan,
I started a new thread regard the connection between BOEusb with PSC. I got reply from Chris that baud rate have to change as difference between BS2 and BS2px. I'll try and if you have any good suggestion, please do teach me. I found the PSC green LED only flashing without reply on debug window.
My project actually·is to connect·a·PSC to a computer via Bluetooth. So, I have BOEusb w/BS2px, a PSC, a eb500-ser and a bluetooth adapter which support Bluetooth Serial Port.
Thks
Ricky·

Zoot · 2006-09-23 15:20

I think what Chris was referring to is that the UNITS for different baud rates are different from Stamp to Stamp. It's generally easiest to use conditional compilation for things like Baud rates, freqout, pulsin, pulsout, etc.

Here's the standard code for baud rates. When you want to use a given baud, use the constant, rather than an actual number:

' Baud rates
#SELECT $STAMP
  #CASE BS2, BS2E, BS2PE
    T1200       CON     813
    T2400       CON     396
    T4800       CON     188
    T9600       CON     84
    T19K2       CON     32
    TMidi       CON     12
    T38K4       CON     6
  #CASE BS2SX, BS2P
    T1200       CON     2063
    T2400       CON     1021
    T4800       CON     500
    T9600       CON     240
    T19K2       CON     110
    TMidi       CON     60
    T38K4       CON     45
  #CASE BS2PX
    T1200       CON     3313
    T2400       CON     1646
    T4800       CON     813
    T9600       CON     396
    T19K2       CON     188
    TMidi       CON     108
    T38K4       CON     84
#ENDSELECT

SevenBit        CON     $2000
Inverted        CON     $4000
Open            CON     $8000

So in your code, if you want to use the PSC's higher baud rade, use "T38K4" in your SEROUT commands. The actual value of "T38K4" will depend on the actual stamp downloaded to, but you won't have to change your code for different stamps. See the Pbasic manual for more info about conditional compilation and see the SEROUT command reference for the table that shows the different "units" used by each stamp for baud rates and the like. Does this help?

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When the going gets weird, the weird turn pro. -- HST

RickyC · 2006-09-25 04:25

Thks a lot, Zoot and I will try.
Ricky

RickyC · 2006-09-29 05:10

I can control servoes now by change Baud to 1464 that the defaut rate of PSC. However, I still can not control PSC via PSCI v0.9h. PSCI can not pick up Verson no. of PSC. Can anybody tell me how?
thks,
ricky

Zoot · 2006-09-29 05:14

Do you mean you used 1646, which would be 2400 Baud (default for the PSC) on your BS2px?

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When the going gets weird, the weird turn pro. -- HST

Chris Savage · 2006-09-29 20:17

Okay,
·
·· Assuming this is a USB PSC, then you have to have the USB Driver installed before you can talk to it from the PSCI software.· The driver will assign a COM Port number to the device, and this is the one you need to use in the PSCI software when opening the port for it.· If you’re on a laptop you may or may not need to reduce the latency timer setting in the Advanced Port Settings in the Device Manager.

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Chris Savage
Parallax Tech Support

RickyC · 2006-09-30 07:42

Yes, that right.
ricky

Zoot said...
Do you mean you used 1646, which would be 2400 Baud (default for the PSC) on your BS2px?

RickyC · 2006-09-30 07:59

No, PSC is serial (#28023) and BOE is USB·in this thread as attached photo. I use the com port of BOE connected but PSCI can not pick up version no. 1.4 as I can see on Stamp Editor. On the other hand, I have·a PSCusb if direct connect to my computor then PSCI works very good.· I wonder why?
Thks
Ricky

Chris Savage (Parallax) said...
Okay,
·
·· Assuming this is a USB PSC, then you have to have the USB Driver installed before you can talk to it from the PSCI software.· The driver will assign a COM Port number to the device, and this is the one you need to use in the PSCI software when opening the port for it.· If you’re on a laptop you may or may not need to reduce the latency timer setting in the Advanced Port Settings in the Device Manager.

Chris Savage · 2006-09-30 16:16

The PSCI software will only talk to the PSC directly, not through the BOE.· Since you have a serial PSC you don’t have a convenient way to connect serially to the PC.

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Chris Savage
Parallax Tech Support

RickyC · 2006-10-04 13:02

Thks, Chris and wonder if you have any constructive advices ?

Ricky

Chris Savage (Parallax) said...
The PSCI software will only talk to the PSC directly, not through the BOE.· Since you have a serial PSC you don’t have a convenient way to connect serially to the PC.

Chris Savage · 2006-10-04 14:25

RickyC,
·
·· My best advice is that if you really intend PC control then you should get the USB version of the PSC which will connect directly to PC and allow you to directly use the PSCI software.

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Chris Savage
Parallax Tech Support

RickyC · 2006-10-05 05:33

Chris, back to the old story. I want to save the PSCI file to BOE and run by itself without cable between. I can control PSC very well if it is direct connected to PCSI.

Thks, Ricky

Chris Savage (Parallax) said...
RickyC,
·
·· My best advice is that if you really intend PC control then you should get the USB version of the PSC which will connect directly to PC and allow you to directly use the PSCI software.

RickyC · 2006-10-12 17:15

Chris, any new suggestions ?

·RickyC said...

Chris, back to the old story. I want to save the PSCI file to BOE and run by itself without cable between. I can control PSC very well if it is direct connected to PCSI. Thks, Ricky

Chris Savage (Parallax) said...
RickyC,
·
·· My best advice is that if you really intend PC control then you should get the USB version of the PSC which will connect directly to PC and allow you to directly use the PSCI software.

Chris Savage · 2006-10-12 20:12

Ricky,
·
·· There is no file to save…You will need to copy the values from the PSCI Software into DATA statements in your code and play them back that way.· I have no other new suggestions.

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Chris Savage
Parallax Tech Support

Bruce Bates · 2006-10-13 07:53

Gents -

One could stuff the commands in an external EEPROM for more portability, if that's helpful.

Regards,

Bruce Bates

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Chris Savage · 2006-10-24 21:59

If you were still interested in controlling the PSC from a C Program there is a post in our Completed Projects Forum that may help you.· Take care.

http://forums.parallax.com/showthread.php?p=611904

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Chris Savage
Parallax Tech Support

RickyC · 2006-10-27 07:04

Thks Chris,
I have changed my board to SSC-32 with a Wiport Wi-Fi and·they work fine. I can now control my robot without a wire in between that you can not support in this area. Once I finish my project, I'll study your suggestion.
rgds,
Ricky

Chris Savage (Parallax) said...

If you were still interested in controlling the PSC from a C Program there is a post in our Completed Projects Forum that may help you.· Take care.

http://forums.parallax.com/showthread.php?p=611904

BS2px on BOEusb and PSC connection problem

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