[Robotgroup] PIC bootloader from Microchip

[Alberto Alonso]

It is actually a USB bootloader. I think I can get the source for it,
but I just didn't want to reinvent the wheel if somebody already
had one that worked like I want.

I've spent the past 5 days trying to see how fast I can get a
constant data stream from the PIC18F2455 and I must say that I was
hoping it would be faster. I will post the results once I properly
can validate what I am seeing.

I didn't get MPLAB working under wine yet. Right now I just VNC from
my Linux box to a windows box to do the compile.

Alberto

On Wed, 2007-06-06 at 10:18 -0700, Gray Mack wrote:
> Typically auto download is done using the DTR pin through the extra input on the max232 to a transistor placed across the reset button. If the loader you are using is written to send a DTR pulse before initiating the transfer then you can get a reset without having to button press each time. I dont know if any pic loaders do that or if you can get the source and make it so. I have only seen it on other processors like the propeller propStick.
> 
> Are you using MPLAB under linux? I heard there are some wine tool steps to accomplish this but I havent tried everything yet.
> -Gray
> 
> 
> ----- Original Message ----
> From: Robo Al <sp-18561884 at ggsys.net>
> To: Austin Robotgroup Mailing List <robotgroup at puremagic.com>
> Sent: Tuesday, June 5, 2007 11:24:12 PM
> Subject: [Robotgroup] PIC bootloader from Microchip
> 
> 
> Does anybody have any experience with the above?
> 
> I really like having it, but I am wondering if anybody
> has written a way to jump in and out of the bootloader
> without hitting any buttons. 
> 
> Basically I want my software to reset the board upon 
> writing the firmware.
> 
> Also, I want to be able to jump to the bootloader from
> the firmware without having to press the prog and reset
> switches.
> 
> FYI, I am using the UBW from sparkfun and fsusb under
> Linux to do this.
> 
> Thanks,
> 
> Alberto
> 
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-- 
Alberto Alonso                        Global Gate Systems LLC.
(512) 351-7233                        http://www.ggsys.net
Hardware, consulting, sysadmin, monitoring and remote backups