Trinket-Pro-Bootloader
A propos du Bootloader
A bootloader is a tiny piece of software residing on the microcontroller that that helps load your own code into the remaining space.
One of the challenges with the Pro Trinket is that we wanted to have a built-in USB bootloader, but the ATmega328 doesn't have built-in USB hardware!
So instead, Frank (our awesome engineer with mad USB chops) created a USB bootloader that combines the elegance of V-USB with the well-supported and tested nature of the USBtinyISP. This bootloader looks just like a USBtinyISP - and since it uses the unique Adafruit VID/PID we own and that we added to avrdude so long ago, it works with only very minimal configuraton tweaks. No need to recompile anything, whew!
Then, since we had a little space left in the bootloader area of the chip, we added Optiboot support. You can use either the USB connector or an FTDI cable so that it acts just like an Arduino Uno for programming, for max flexibility.
The Pro Trinket is smart enough to auto-detect which bootloader you are trying to use. If you plug the USB port in, it will enumerate as a USBtinyISP for USB bootloader. If you plug in FTDI and use the Arduino Uno programming procedure it will use that technique
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Please note: you cannot use the Adafruit USB VID/PID for your own non-Trinket products or projects. Purchase a USB VID for yourself at http://www.usb.org/developers/vendor/ |
Pro Trinket USB Drivers for Windows
The cool thing about the bootloader on the Pro Trinket is it just looks like a classic USBtinyISP AVR programmer. This makes it easy to use with AVRdude or Arduino IDE with only minor configuration changes. Before you start, you may need to install the USBtinyISP USB drivers
Drivers are only required for Windows, if you are using a Mac or Linux, drivers are not required!
For details on installing the drivers for Windows XP, 7, 8 etc... please read this page!
If you're good at installing drivers, you can just download the Windows 8 drivers or Windows XP/7/Vista drivers by clicking on those links.
Don't forget to plug in the Pro Trinket via a known-good USB cable to start the process. You should see the green power LED lit and the red bootloading LED pulse indicating that the Trinket is ready to start bootloading. If you've programmed the Pro Trinket since getting it, you can always get it back to the bootloader state by pressing the small onboard reset button
Notes spéciales pour les utilisateurs Linux
Pro Trinket is not supported on Linux operating system at this time - try Mac OS or Windows! However, you can try the following - it does work for some computers
Linux is fairly picky about who can poke and prod at the USB port. You can always run avrdude or Arduino IDE as root, which will make sure you have the proper permissions. If you want to be super-cool you can add a udev rule which will let any user (who is not root) connect to the USBtiny driver. That way you don't have to be root all the time!
Voyez ce tutoriel sur avrdude pour Linux pour la ligne à ajouter au fichier udev.
Source: Introducing Pro Trinket réalisé par Ladyada pour AdaFruit Industries. Crédit AdaFruit Industries
Traduit par Meurisse.D. pour MCHobby.be
Traduit avec l'autorisation d'AdaFruit Industries - Translated with the permission from Adafruit Industries - www.adafruit.com
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