Possible issue with some PIC18F2550 samples and a fix.

[dmitri]

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

XMEGA dev' - 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.

[alchemicus]

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

[Synthex]

You can solder the resistor between the pin 3 and the pin 6 on the ICSP 18F2550 connector

[alchemicus]

Nothing...today windows doesn't want detect megadrum....i solder the resistor as u wrote... but nothing

[dmitri]

What version of firmware is in your PIC18F2550?

[alchemicus]

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.

[dmitri]

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?

[alchemicus]

absolutely not...it's the pic provided form synthex

[dmitri]

absolutely not...it's the pic provided form synthex

Ask Synthex what version of the firmware you have.

[alchemicus]

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...