Diffstat (limited to 'digital')
1 files changed, 12 insertions, 16 deletions
diff --git a/digital/dev/doc/usage.txt b/digital/dev/doc/usage.txt
index de1030a5..5406764c 100644
@@ -28,29 +28,22 @@ You need to install:
-The voodoo ceremonial
-As ``usbprog`` is quite buggy (no error checks), here is the best working
-procedures we have found:
+Voodoo power should not be used any more:
#. power up the development card using the external power;
#. power up your card using the power provided by the development card;
- #. plug the USB cable to your computer. You should see ``atmel`` in the
- output of ``sudo lsusb``;
#. plug the dev cable to the card you want to program.
- #. use ``avrdude`` to program your card, with something like:
- ``avrdude -p m128 -c avrispv2 -P usb -U flash:w:your_program.hex``
- If it does not work, just remove the serial and USB cable and try again the
- #. remove the serial cable from the card.
+ #. plug the USB cable to your computer. You should see ``atmel`` in the
+ output of ``sudo lsusb``.
- #. remove the USB cable from your computer and plug it back in.
+ #. use ``avrdude`` to program your card, with something like:
+ ``avrdude -p m128 -c avrispv2 -P usb -U flash:w:your_program.hex``.
#. launch ``usbprog`` to put the development card in serial mode:
``sudo usbprog device 0 upload blinkdemo devices``. It should failed with
@@ -58,7 +51,10 @@ procedures we have found:
should see in the kernel message something like:
*cdc_acm 2-2:1.0: ttyACM0: USB ACM device*.
- #. plug the dev cable.
#. launch ``minicom`` in */dev/ttyACM0 8N1* mode.
+ #. to return to program mode, first free the usb port with:
+ ``modprobe -r cdc_acm``, then put the development card in program mode:
+ ``sudo usbprog device 0 upload blinkdemo devices``, the card is ready to
+ be used for programming.