Hi, Just added an additional version of the USB bootloader with 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 the bootloader, then wait 10 seconds and the bootloader will 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: Bootloader on 18F2550 > > For 18F2550 I'm interested in bootloader used 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 -~----------~----~----~----~------~----~------~--~---
