RE: Receive on /dev/ttySA1

Hi Till

Maybe the ttySA1 is not configured in the kernel.
I have not really tested it.

The handshake can cause this effect.
How have you set the handshake?
Does the module set the handshake signals like RTS/CTS?

And check the baud rate setting...

Regards
Walter

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Till
> Harbaum
> Sent: Thursday, September 02, 2004 3:20 PM
> To: [email protected]
> Subject: [Simpad-general] Receive on /dev/ttySA1
> 
> 
> Hi,
> 
> i am replacing the DECT modem in my SIMpad with a bluetooth 
> module. My problem 
> is, that i cannot get the /dev/ttySA1 uart to receive any data.
> 
> Using an oscilloscope, i see, that my bluetooth module gets 
> the correct reset 
> request from hci_attach and that it returns the correct 
> command complete 
> code. Therefore i am sure, that transmit works. But the 
> SIMpad ignores all 
> data received.
> 
> If i shorten RxD and TxD following the pinout at 
> http://www.opensimpad.org/internals.0.html, i don't get any 
> echo using two 
> terminals with "cat /dev/ttySA1" in one window and "echo "Hallo" 
> >/dev/ttySA1" on the other one. The same setup works as i 
> expect with ttySA0, 
> so this should be working with ttySA1 as well.
> 
> I also tried the other input pins on that connector, but none 
> of them works as 
> RxD (btw why is the connector listed to be 22 pin, while it 
> only has 20 
> pins?).
> 
> Anyway, is there any magic i need to do to receive data via 
> /dev/ttySA1? Any 
> pin i have to put at a certain voltage to enable the 
> receiver? Any help is 
> greatly appreciated, since the bluetooth chip itself is working fine.
> 
> Regards,
>  Till
> 
> -- 
> Dr.-Ing. Till Harbaum                       Tel.:  +49 721 4998963
> BeeCon GmbH                                 Fax:   +49 721 4998962
> Haid-und-Neu Strasse 7, 76131 Karlsruhe     Mobil: +49 179 9087904
> [email protected]                           http://www.beecon.de
> 
> 
> 
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