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Ligne 2 : − {{traduction}} Ligne 207 :
Ligne 206 : + + − + − + + + − Une fois que votre croquis de datalogging Arduino fonctionne comme attendu, vous pouvez simplifier la procédure en copiant '''CURRENT.UF2''' depuis le lecteur '''BOOT''' pour faire une copie de sauvegarde de votre programme Arduino. Vous pourrez ensuite charger CircuitPython pour accéder au système de fichier de la Flash SPI et enfin recopier votre '''CURRENT.UF2''' sur le lecteur '''BOOT''' de la carte Express pour réactiver votre croquis Arduino!+
ENG-CANSAT-FEATHER-M0-SPI (voir la source)
Version du 23 septembre 2018 à 19:47
, 23 septembre 2018 à 19:47→Forewords
== Forewords ==
== Forewords ==
One of the most exciting feature of the M0 Express board is this small FLASH chip wired on the SPI bus. That memory could be used to provide lot of services like storing files, python script and many more.
One of the most exciting feature of the M0 Express board is this small FLASH chip wired on the SPI bus. That memory could be used to provide lot of services like storing files, python script and many more.
* After a while, you should see a '''CIRCUITPY''' drive containing the file '''boot_out.txt'''. Great, the Circuit Python filesystem is initialized on the SPI Flash.
* After a while, you should see a '''CIRCUITPY''' drive containing the file '''boot_out.txt'''. Great, the Circuit Python filesystem is initialized on the SPI Flash.
* Open the Arduino IDE and upload the '''fatfs_circuitpython''' sketch available in the Adafruit's SPI FLASH library. Open the serial console and start the sketch. Voila! the CircuitPython file system is properly mounted and the file '''data.txt''' created and initialized.
* Open the Arduino IDE and upload the '''fatfs_circuitpython''' sketch available in the Adafruit's SPI FLASH library. Open the serial console and start the sketch. Voila! the CircuitPython file system is properly mounted and the file '''data.txt''' created and initialized.
{{ambox|text=So, the Arduino Sketch did manipulated a file onto the SPI Flash owning the CircuitPython filesystem!}}
{{ADFImage|FEATHER-M0-ArduinoIDE-SPI-Flash-02.png}}
{{ADFImage|FEATHER-M0-ArduinoIDE-SPI-Flash-02.png}}
* Revenons sur notre ordinateur, redémarrez le bootloader de la carte Express --ET-- re-glissez/re-déposez '''circuitpython.uf2''' sur le lecteur '''BOOT''' rendu accessible par le bootloader. Voilà, CircuitPython est résintallé sur la carte Express.
This time, we will open the file created by the Arduino sketch.
* Au bout d'un moment, le lecteur '''CIRCUITPY''' redevient accessible. Celui-ci expose a nouveau le système de fichier MicroPython de la Flash SPI. Vous pouvez maintenant voir le fichier '''data.txt''', l'ouvrir et en consulté le contenu!
* Let plug again the board on the computer, restart the bootloader on the Express board --AND-- drag/drop the '''circuitpython.uf2''' on the drive '''BOOT''' made accessible by the bootloader. Great, CircuitPython is now installed (again) on the board.
* After a a while, the '''CIRCUITPY''' drive is made available by CircuitPyhton. This would expose the SPI Flash content as a Mass Storage device. You can now see the file '''data.txt''' created by our Arduino Sketch, Open it and read it's content :-) !
{{ADFImage|FEATHER-M0-ArduinoIDE-SPI-Flash-03.png}}
{{ADFImage|FEATHER-M0-ArduinoIDE-SPI-Flash-03.png}}
Once your datalogging sketch finish, you can simplify the procedure by copying the '''CURRENT.UF2''' from the '''BOOT''' drive to make "ready to use copy" of your sketch. You could now load the CircuitPython to access the CircuitPython file system and then switch back to you Arduino sketch by restoring the '''CURRENT.UF2''' on the Express Board!
{{ENG-CANSAT-TRAILER}}
{{ENG-CANSAT-TRAILER}}