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PDA USB to PIC interface info needed

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servopump

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Hello,

I would like to interface a WinCE PDA to a PIC via the USB port that most PDAs have built in.

I know that MC has a pic with built-in USB support. I would like to develop software for the PDA and use the PIC for digital I/O. Do PDAs have USB drivers built in? I would like to avoid using ActiveSync since it does not seem very reliable.

Any Ideas or suggestions on how to implement this interface would be welcomed.

Thank in advance for your help.

ServoPump
 

mihotron

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first of all you must see what USB have PDA (host or slave)

only PIC16C745 or PIC16C765 are with USB,i don't know if there are host or slave

another way is to SL811HC (www.cypress.com) -host/slave usb[/u]
 

M!k

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Hi,
PIC16C745 or PIC16C765 are only clients (slaves). Lots of PDAs use an Intel SA1110. But its USB port is also only an USB client.
I think you got a problem...


Mik
 

algilsan

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Hi, i'm in this trouble too

Does anyone know if there is any USB to RS232 converter drivers for ipaq, like for Laptops?

this shoud be my solution, instead of use a uC with an integrated USB MAster.
 

eltonjohn

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IS YOUR PDA USB A MASTER OR SLAVE

SOME PDA USB PORTS ARE SLAVES ..
WHICH MEANS THAT THEY CAN'T USE PERIPHERALS . THE PDA IS ITSELF A PERIPHERAL POR A HOST PC
MY CASSIOPEA E500 IS ONE OF SUCH

But there ARE SOME NEW PDA's THAT ARE MASTERS ,,THEY CAN USE
PERIPHERALS...



NOW I ALSO HAVE A QUESTION

I HAVE USED THOS FTDI CHIPS THAT CONVERT
PARALLEL TO USB AND ALSO SERIAL TO USB

WHAT HAPPENS WITH THOSE CHIPS IF TWO OF THEM ARE USED
BY CONNECTING THEM BY THE USB PORT
CAN I COMUNICATE ?
THEY ARE SUPPOSED TO BE SLAVES ..
WILL THEY BE ABLE TO ARBITRATE
 

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