Possible issue with some PIC18F2550 samples and a fix.

Discussions related to MegaDrum Hardware

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby dmitri » Sun Mar 15, 2009 11:39 pm

Ken Forgettable wrote:
dmitri wrote:This file contains 5 PIC18F2550 USB MIDI firmware versions for 4/8/12/16/20MHz crystals:

XMEGA dev' :ugeek: - just with a change to CLOCK_FREQ in "HardwareProfile - pic18f2550.h" for these then?

It's actually just a change in the config words if it matters.
dmitri
Site Admin
 
Posts: 8654
Joined: Fri Aug 03, 2007 8:05 pm

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby alchemicus » Sun Mar 29, 2009 11:15 am

i'm really sorry for the stupid question but i need an help where solder the resistor.
I have pcb by synthex and i identified pin "26" of PIC18F2550 watching this http://www.datasheetcatalog.org/datasheet/microchip/39617a.pdf
the pin n.26 seems to to to the last pin of ICSP 18F2550....please help me :)
alchemicus
 
Posts: 89
Joined: Sun Mar 01, 2009 10:51 am

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby Synthex » Sun Mar 29, 2009 11:21 am

You can solder the resistor between the pin 3 and the pin 6 on the ICSP 18F2550 connector
Synthex
 
Posts: 1471
Joined: Fri Oct 12, 2007 6:06 am
Location: France

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby alchemicus » Sun Mar 29, 2009 11:32 am

Nothing...today windows doesn't want detect megadrum....i solder the resistor as u wrote... but nothing
alchemicus
 
Posts: 89
Joined: Sun Mar 01, 2009 10:51 am

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby dmitri » Sun Mar 29, 2009 11:56 am

What version of firmware is in your PIC18F2550?
dmitri
Site Admin
 
Posts: 8654
Joined: Fri Aug 03, 2007 8:05 pm

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby alchemicus » Sun Mar 29, 2009 12:02 pm

20090211....on lcd display all workin fine, i see piezo activity on display too and i can browse menu with buttons...

EDIT
i don't know what is changed from yesterday...
yesterday windows detected megadrum 2-3 times, today nothing.
alchemicus
 
Posts: 89
Joined: Sun Mar 01, 2009 10:51 am

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby dmitri » Sun Mar 29, 2009 1:32 pm

alchemicus wrote:20090211....on lcd display all workin fine, i see piezo activity on display too and i can browse menu with buttons...

EDIT
i don't know what is changed from yesterday...
yesterday windows detected megadrum 2-3 times, today nothing.

I mean PIC18F2550 firmware. Did you program it yourself?
dmitri
Site Admin
 
Posts: 8654
Joined: Fri Aug 03, 2007 8:05 pm

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby alchemicus » Sun Mar 29, 2009 1:43 pm

absolutely not...it's the pic provided form synthex
alchemicus
 
Posts: 89
Joined: Sun Mar 01, 2009 10:51 am

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby dmitri » Sun Mar 29, 2009 1:47 pm

alchemicus wrote:absolutely not...it's the pic provided form synthex

Ask Synthex what version of the firmware you have.
dmitri
Site Admin
 
Posts: 8654
Joined: Fri Aug 03, 2007 8:05 pm

Re: Possible issue with some PIC18F2550 samples and a fix.

Postby alchemicus » Sun Mar 29, 2009 2:19 pm

do i need to build the cable to update firmware? i hope it's only a firmware problem.
I tried to connect midi out but powered with USB and no midi signal out...
alchemicus
 
Posts: 89
Joined: Sun Mar 01, 2009 10:51 am

PreviousNext

Return to MegaDrum Hardware

Who is online

Users browsing this forum: Google [Bot] and 99 guests

cron