Hi Vasi Thanks for the feedback, maybe can add a check if the first three bytes at location 0x800 are set to 0xFFFFFF (i.e, when no user app is flashed), if so, then set wait time to inifinite b.t.w. if you're want to use the Python USBDownloader you have to install the LibUSB filter driver (on Windows), on Linux it can work right out of the box. Albert
----- Original Message ----- From: "funlw65" <[email protected]> To: "jallib" <[email protected]> Sent: Tuesday, September 08, 2009 3:59 PM Subject: [jallib] Re: Bootloader on 18F2550 Hi Albert, Today I burned your bootloader (the one with autostart) and it was impossible to install the Microchip custom driver in automatic mode on Vista Basic. It was a weird behavior - device disconnecting/ reconnecting at some intervals! I had to do it manual. But now is working nice on my board. I did a blink test and now I will test with usb-cdc driver. Vasi On Aug 11, 12:32am, "a.faber" <[email protected]> wrote: > Hi, > Just added an additional version of the USBbootloaderwith autostart. It > will autostart if the version number > is not retreived by the host application (PDFSUSB for example). > > 1) Flash the bios code (I've also uploaded the hex for 18f2550 & 18f4550 > (same hex file) in the file section of the google code group list) > 2) Plug in the USB connector > 3) When you hear the sound that the USB device is recognized, you have to > select the PICDEM USB 0 (boot) from the combo box in the PDFSUSB host > application, this will retreive the version number so to auto-start is > aborted) > 4) Flash the user application (use the standard -loader18 -no-fuse flags > when compiling with JALV2 compiler) > 5) Hit the execute button within the PDFSUSB application > > 6) When you unplug the USB connector, and plug it again, it will first > recognize thebootloader, then wait 10 seconds and thebootloaderwill start > the user application. > > At the moment it still a bit clumsy, but this can be greatly improved by > adapting the downloader application on the host side, will look into this > later-on (and also support for other host platforms than Windows) > > Albert > > ----- Original Message ----- > From: "funlw65" <[email protected]> > To: "jallib" <[email protected]> > Sent: Sunday, August 09, 2009 7:51 PM > Subject: [jallib] Re:Bootloaderon 18F2550 > > > For 18F2550 I'm interested inbootloaderused for 18f14k50 but without > > the need of start button (autorun after 5 seconds by example). --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/jallib?hl=en -~----------~----~----~----~------~----~------~--~---
