[En-Nut-Discussion] Weird Ethernut Issue (I'm a noob, so it's probably something simple)

[Kyle Klosinski]

Awesome. Thanks, I got it working again.

Kyle

On Sun, 25 Jul 2004 11:12:05 +0200, Harald Kipp <harald.kipp at egnite.de> wrote:
> Hello Kyle,
> 
> on the ATmega128 the programming pins are shared with
> the UART0 lines. The 4053 multiplexer on Ethernut 1.x
> switches these pins from the RS232 to the ISP connector,
> when -PROG_ENABLE is driven low. Most ISP adapters drive
> this line, but STK500 doesn't. So you can short JP4 to
> force the switch. It must be removed after programming
> to enable RS232 again.
> 
> Some other boards use the ISP's -RESET signal. With
> a little bit soldering skill you may modify your Ethernut,
> tying -RESET to -PROG_ENABLE, but this may stress other
> ISP adapters. With some more skills you may cut the
> -PROG_ENABLE from the ISP and connect it to the ISP's
> -RESET line.
> 
> After about a minute, Basemon should initiate the Ethernet
> link automatically. However, in case of problems you need
> the RS232 to see Basemon's output. So you need to open
> JP4. One more hint: If Basemon fails to receive space
> characters, it will use 38400 baud.
> 
> Harald
> 
> 
> 
> At 18:28 23.07.2004 -0400, you wrote:
> >I have an Ethernut 1.3 rev F that had had the webport program
> >installed on it. I wanted to reinstall basemon (as downloaded from
> >ethernut.de) to help me learn the program. I tried and tried to get
> >the computer to communicate with the ethernut through stk500.exe in
> >the AVR studio package (I'm just using the basic ISP dongle). The prg
> >LED was not on, only the Link and Pwr, and occasionally the act LED. I
> >found some reference somewhere to jumping JP4 (the jumper right next
> >to the 10-pin connector on the board), so I tried it. This lit the prg
> >LED. That let me write to the ethernut. However, after writing the
> >basemon hex file and reseting the board, the Link LED did not come on,
> >but the Activity LED is constantly on. I tried removing the jumper on
> >J4 and the programming connector, and the only change is that the prg
> >light goes off then. I've tried reseting it, erasing it, re-writing to
> >it, etc. What's wrong with it?
> 
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