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Tuesday, September 8, 2009

Pinguino on 18F2455/18F4455

Finally, i tested Pinguino on 18F2455 and 4455. These chips offer the same functions but less memory capacity.
Everything is OK with bootloader V2, but i programmed the chips with 18F4550 checked. If i check 18F4455 on my programer software, nothing works !!
I use a home made JDM programer and IC-PROG with wine.
Maybe it will be useful for other users.........

11 comments:

funlw65 said...

Hi Jean-Pierre,

Can you make your JDM available?
I want to give it a try.
Thank you!

Vasi

funlw65 said...

I mean, schematics...

aleale99 said...

Hi Jean-Pierre,

I built the circuit using a 18F4455 on pin+pinguino+18F4550.png schematic,

I could not load the last bootloader 4550V2 (piklab & PICKIT2 v1.21 )

I removed the capacitor of 10uF near the reset button and now I can load the firmware.

In the evening I will connect USB port and do more testing

Thanks for the work you're doing with PIC micro

gilson said...

Hi,

Microchip.com sent me samples of 18f2450 (a cheaper version with less memory). Does It work with the bootloader4550V2 ?

@funlw65
schematic for JDM2:
http://www.olimex.com/dev/images/pic-pg2c-sch.gif
http://www.kmitl.ac.th/~kswichit/ezpic/files/ezpic-schematic.gif

Gilson.

funlw65 said...

Thank you Gilson!

Jean-Pierre MANDON said...

@Gilson,

I never used the 18F2450 but i read the datasheet and it seems to be the same chip except for memory.
The bootloader version 2.1 should works on it.
Your experience will be welcome.

Bruno said...

Hi, newby questions:

Fisrt, how can i take the "parts list", from this figures?

I've seen many figures and can't figure out thigs like:
1. How many resistors i'll need?
3. How many capacitos i'll need?
4. The specs of them?


Thanks , all

Bruno said...

Hi, newby questions:

Fisrt, how can i take the "parts list", from this figures?

I've seen many figures and can't figure out thigs like:
1. How many resistors i'll need?
3. How many capacitos i'll need?
4. The specs of them?


Thanks , all

Jean-Pierre MANDON said...

Hi Bruno,

Follow this link:
http://sites.google.com/site/pinguinotutorial/home
a complete part list is available.

Ulises said...

Hi
Do you know how can i make a microseconds delay?

Other thing, there is a bug in Pinguino beta 6 for mac when i´m writing a program, it says: Error: CGContextRestoreGState: invalid context

(this error is show on terminal)


See you

Ulises said...

Sorry it is pinguino beta 7 for mac