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OpenSys
Joined: 15 Oct 2010 Posts: 19
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pic18f4620 and enc28j60 don't get ip and no output on serial |
Posted: Fri Oct 15, 2010 6:41 pm |
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Hello,
I just compile ex_st_webserver.c tcp/ip example and program the 18f4620, then tested with my enc28j60 module, but I don't get any ip by dhcp.
I reread the pic data and is there.
I tested the ethernet with sniffer and no data was sent, seems that the pic is dead.
I use a 10MHz external crystal, I check the voltages of pic, enc and 74hc125, is all fine.
From serial port at 9600 I don't get any data also. What could be wrong ?
If I connect the pic without any lcd, or enc28j60 could I get any data from serial?
Please help me, to move on.
Thank you.
VS |
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OpenSys
Joined: 15 Oct 2010 Posts: 19
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Posted: Sat Oct 16, 2010 3:51 am |
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simple serial code loop like this don't work:
#include <18f4620.h>
#use delay(clock=40000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8)
#fuses MCLR
#fuses NOPROTECT
#fuses INTRC_IO
#fuses NOWDT
#fuses NOPUT
#fuses NOLVP
#fuses NOBROWNOUT
#fuses NOCPD
#fuses WRT
#fuses NOWRTD
#fuses NOEBTR
#fuses NOCPB
#fuses NOEBTRB
#fuses WRTB
void main(void)
{
while (TRUE) {
DELAY_MS(100);
printf("ok 123\r\n");
}
} |
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Rocket
Joined: 29 Aug 2005 Posts: 27
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Posted: Sat Oct 16, 2010 4:31 am |
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If you want to work at 40Mhz, you need a 10Mhz Xtal and the fuse statement "#fuses INTRC_IO" replaced with "
#FUSES H4 //High speed osc with HW enabled 4X PLL _________________ J.I.L. |
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bkamen
Joined: 07 Jan 2004 Posts: 1611 Location: Central Illinois, USA
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Posted: Sat Oct 16, 2010 7:47 am |
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Rocket wrote: | If you want to work at 40Mhz, you need a 10Mhz Xtal and the fuse statement "#fuses INTRC_IO" replaced with "
#FUSES H4 //High speed osc with HW enabled 4X PLL |
Right. Read the Datasheet. You'll hear that a lot here. You want the section titled "Oscillator Configurations".
Also, if you leave out the #fuses that select the oscillator config and use #use delay (clock=40M, crystal=10M) that will set most stuff up for you one later compiler versions. (which you didn't tell us which you have)
the TCPIP stack does work - but needs modification to fit most cases.. and you say you just compiled it.
Is it set up to work with your board? or is this a standard demo PCB from someone? _________________ Dazed and confused? I don't think so. Just "plain lost" will do. :D |
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OpenSys
Joined: 15 Oct 2010 Posts: 19
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Posted: Sat Oct 16, 2010 9:55 am |
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yes I miss the #FUSES H4 :( serial is working, so programmer is ok, and connections also ok.
So i programmer again the example code.
I found that is dhcp that is the problem, he is unable the send any udp packet to network, so i put with static ip address and was worked!
to dhpc i need this:
#define STACK_USE_DHCP TRUE
#define STACK_USE_UDP TRUE
#define STACK_USE_ARP TRUE
in main:
MACAddrInit();
// IPAddrInit();
MACInit();
init_user_io();
StackInit();
while(TRUE) {
StackTask();
}
is correct ?
thank for all your help.
VS |
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bkamen
Joined: 07 Jan 2004 Posts: 1611 Location: Central Illinois, USA
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Posted: Sat Oct 16, 2010 10:20 am |
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I've used the DHCP feature before and found it to work fairly well.
The question I have for you is:
What is providing your DHCP service?
-Ben _________________ Dazed and confused? I don't think so. Just "plain lost" will do. :D |
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OpenSys
Joined: 15 Oct 2010 Posts: 19
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Posted: Sat Oct 16, 2010 10:30 am |
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bkamen wrote: | I've used the DHCP feature before and found it to work fairly well.
The question I have for you is:
What is providing your DHCP service?
-Ben |
hello,
is a router that is provide it, with openwrt.
dhcp is working in all network, i also check if the module sends any udp packet, but no.
I also put the serial port the send a simple text when the pic was init, with static ip, the text shows, with dhcp no.
VS |
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OpenSys
Joined: 15 Oct 2010 Posts: 19
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Posted: Sat Oct 16, 2010 2:17 pm |
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hello again,
After a while working, pic makes resets. I found that if remove the 74hc125 the resets stops so may have some problems with enc28j60 ?
The enc28j60 init's ok, the lead blink ok.
seams to be from enc28j60 (SO) to pin23 pic18f4620 that i get the loop.
What tests can I do more?
VS |
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OpenSys
Joined: 15 Oct 2010 Posts: 19
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Posted: Sat Oct 16, 2010 6:27 pm |
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OpenSys wrote: | hello again,
After a while working, pic makes resets. I found that if remove the 74hc125 the resets stops so may have some problems with enc28j60 ?
The enc28j60 init's ok, the lead blink ok.
seams to be from enc28j60 (SO) to pin23 pic18f4620 that i get the loop.
What tests can I do more?
VS |
OK a add some 180R resistors do the ports to drop some voltage pic's, and it works.
The Only thing thats misses is DHCP. if i activate it, the pic's don't run.
ip stack last version for ccs is 3.75 ?
VS |
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OpenSys
Joined: 15 Oct 2010 Posts: 19
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Posted: Mon Oct 18, 2010 2:19 pm |
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I found something interesting i have a web server on pic, if i activate it with
#define STACK_USE_HTTP 1
the dhcp don't work, and freeze the pic if is:
#define STACK_USE_HTTP 0
dhcp works fine.
the http code is simple like the example.
What could be the problem ?
found something more, dhcp use udp so if:
#define STACK_USE_UDP 1
pic freeze, so something with http and udp.
found more things....
the problem is the STACK_USE_HTTP 1
if web server is activated lcd don't work and dhcp the same way.
if webserver is disabled all things works fine. |
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OpenSys
Joined: 15 Oct 2010 Posts: 19
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Posted: Thu Oct 21, 2010 6:03 pm |
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found it, it seams that is the rom of the pic, if pass over 50% occupied, pic freeze....
i will open a new post |
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