18f2550 programming (SW) - Electronic Circuits Projects Diagrams Free

lez · 30th May 2006, 11:27 AM

I have for many years used pic basic on the 16 series, but I know want to build usb connected designs instead of my usual serial controlled items.

I'm going into this blind and have not got a clue how these new pics do the comms over usb.

Has anyone got any simple hello world and turn that LED on software so I can look at whats going on?

**Nigel Goodwin** · 30th May 2006, 01:02 PM

Quote:

Originally Posted by lez

I have for many years used pic basic on the 16 series, but I know want to build usb connected designs instead of my usual serial controlled items.

I'm going into this blind and have not got a clue how these new pics do the comms over usb.

Has anyone got any simple hello world and turn that LED on software so I can look at whats going on?

There are USB examples and application notes on the MicroChip site, but be aware that it's FAR more complicated than serial.

motion · 30th May 2006, 02:57 PM

Quote:

Originally Posted by lez

I have for many years used pic basic on the 16 series, but I know want to build usb connected designs instead of my usual serial controlled items.

I'm going into this blind and have not got a clue how these new pics do the comms over usb.

Try reading Microchip's application note AN956 "Migrating Applications to USB from RS-232 UART with Minimal Impact on PC Software".

Quote:

Has anyone got any simple hello world and turn that LED on software so I can look at whats going on?

Code for that is not much different from 16 series. In fact aside from the PIC18 specific initializing software, I think you can simply cut and paste assembly code from the PIC16 family with very little change.

Making code for the USB is a much bigger step however. I have a PICDEM FS USB evaluation kit. It came with bootloader and sample firmware. Luckily they are also available for download from Microchip's website. Download the file MCHPFSUSB.ZIP. Unzip and install. The source codes can be found in the install directory.

http://www.microchip.com/stellent/id...cName=en021940

You may also try Jungo Windriver USB development software. They support the PIC18F2550 chip. There is a 30 day trial version on their website.

http://www.jungo.com

phamthaihoa · 6th June 2006, 12:41 PM

Quote:

Originally Posted by lez

I have for many years used pic basic on the 16 series, but I know want to build usb connected designs instead of my usual serial controlled items.

I'm going into this blind and have not got a clue how these new pics do the comms over usb.

Has anyone got any simple hello world and turn that LED on software so I can look at whats going on?

I've built USB based on PIC18F2550 or 4550. (USB GEN and USB CDC)
I've used HTPICC18 to built firmware on PIC, and Borland Delphi 7 to write software on PC.

You can visit:
www.microchipc.com
www.sixca.com

phamthaihoa · 6th June 2006, 12:45 PM

Quote:

Originally Posted by motion

You may also try Jungo Windriver USB development software. They support the PIC18F2550 chip. There is a 30 day trial version on their website.

http://www.jungo.com

PC software generated by Windriver is very complex, it read Endpoint directly.
You should use Microchip's DLL. You can use Visual Basic or Borland Delphi to do it. It's very simple.

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30th May 2006, 11:27 AM	#1
lez	18f2550 programming (SW) I have for many years used pic basic on the 16 series, but I know want to build usb connected designs instead of my usual serial controlled items. I'm going into this blind and have not got a clue how these new pics do the comms over usb. Has anyone got any simple hello world and turn that LED on software so I can look at whats going on?