[En-Nut-Discussion] Urgent: PPP Connection Problem

[Harald Kipp]

Can,

As mentioned earlier, please look into the Ethernut 2
hardware manual, especially the chapter about jumper
settings and the schematics at the end of the manual.

http://www.ethernut.de/pdf/ethwm10.pdf

PD2 and PD3 on the Ethernut Expansion Connector provide
the RX and TX lines.

You do not need to change any jumper on Ethernut 1.3.
No Nut/OS modification is required. Simply replace

NutRegisterDevice(&devDebug0, 0, 0);

with

NutRegisterDevice(&devDebug1, 0, 0);

to use the second UART for debugging.

Harald

At 13:48 19.01.2004 +0200, you wrote:
>Dear Mr. Harald,
>
>I have purchased MAX232. Now I need a schematic or an application note to
>build the connection. Do you have one?
>
>Two more questions:
>
>Do I have to re-configure the jumper settings on the ethernyt 1.3 board?
>Do I have to modify any source code of the Nut/OS?
>
>Thanks.
>Can.
>
>-----Original Message-----
>From: en-nut-discussion-bounces at egnite.de
>[mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Harald Kipp
>Sent: Wednesday, January 14, 2004 9:35 PM
>To: Ethernut User Chat (English)
>Subject: RE: [En-Nut-Discussion] Urgent: PPP Connection Problem
>
>Can,
>
>The Nut/OS UART drivers support both UARTs of the
>ATmega128. If you're using Ethernut 1.3, you need
>to add a RS232 driver, MAX202 or similar. Some extra
>effort, but worth the hassle. It is almost impossible
>to debug these problems with JTAG, because any breakpoint
>will spoil your connection flow.
>
>With Ethernut 2, you can jumper both UARTs to the DSub-9
>connector.
>
>In any case, look to the Ethernut 2 hardware manual.
>
>Harald
>
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