Re: [uCsimm] Problems with RTS and CTS in uCsimm

From: Daniel Haensse (daniel.haensse@freesurf.ch)
Date: Tue Dec 19 2000 - 15:47:53 EST


Am Die, 19 Dez 2000 schrieben Sie:
>
>
>
> > Asier Goikoetxea Yanci wrote:
> >
> >
> >
> > Hello all,
> >
> >
> > I just compiled the kernel to enable support RTS/CTS on 68328
> > serial port and tried again with agetty, but i havenīt got success.
> >
>
> Hello Asier
>
> Uhmmmm......unless you modified the uCsimm, the unique pins connected
> to the MAX3221 are TXD and RXD. There are not supported modem signals
> on the board. You should include the rs232 level translation (you have
> bare logic levels 0/3.3 V on the control lines, instead that +12/-12).

and you can destroy the uCSimm!!!! Have a look at the Max3225 chip for
2 receiver and 2 transmitter. If you need DTR... their are also other chips
with even more transmitter and receiver on the same datasheet.

Dani

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