18F4620 ethernet development kit

CJ · Joined: 08 Jul 2006 Posts: 7

#include <18F4620>
#fuses H4, NOWDT, NOLVP
#use delay (clock=40000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)

The above works fine for the first example

when I change my fuse from H4 to HS and my delay from 40000000 to 20000000 as a following example requests it stops working. In the example all I have to do is change them back and it starts working. Sort of see next question.

Another question is about the Embedded Ethernet Exercise book. I am on example ex7a.c I get the simple printf message but I do not get any network information. I have the dev. board hooked into my network. Do I need it plugged into a pc directly with a cross over cable? Do I need to do something to send it a packet or is the info internal to the development board? As you may have figured I am very new to this. If there is a location I should go to find this out for my self please point me in that direction.

Thank you
Mark

asmallri · Joined: 12 Aug 2004 Posts: 1634 Location: Perth, Australia

If you have a 10M crystal installed then changing to the HS and setting clock=20000000 is pointless. It will not work properly.
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CJ · Joined: 08 Jul 2006 Posts: 7

does anyone know the crystal that is on the embedded ethernet development board?

asmallri · Joined: 12 Aug 2004 Posts: 1634 Location: Perth, Australia

The CCS PICENS has a 10MHz but (unless it has changed) it has a PIC18F4520
_________________
Regards, Andrew

http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!!

CJ · Joined: 08 Jul 2006 Posts: 7

There is a big note on the back of the Exercise book that said they changed and the chip on the board is an 18F4620. Should I be O.K. to leave the fuses and delay at H4 and 40000000? I don't mind recoding later but right now I would like to just work through the exercise book in order to get familiar with the chip.

asmallri · Joined: 12 Aug 2004 Posts: 1634 Location: Perth, Australia

Thanks for the update.

Yes you should leave the H4 fuse set and clock=40000000
_________________
Regards, Andrew

http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!!

CJ · Joined: 08 Jul 2006 Posts: 7

I set up with a crossover cable and a laptop instead of a regular cable into my normal network and it is working fine. Thanks for the helpwith the fuses.

I have not ever worked with this large a pic chip before. I need to pull up the data sheet and review.

asmallri · Joined: 12 Aug 2004 Posts: 1634 Location: Perth, Australia

I have updated the Ethernet bootloader to support the PIC18F4620 on the CCS PICENS Ethernet development board
_________________
Regards, Andrew

http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!!