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Diffstat (limited to 'docs/wipy/general.rst')
| -rw-r--r-- | docs/wipy/general.rst | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/docs/wipy/general.rst b/docs/wipy/general.rst index 976fb6891f..f7c867e0c7 100644 --- a/docs/wipy/general.rst +++ b/docs/wipy/general.rst @@ -35,21 +35,21 @@ If you power up normally, or press the reset button, the WiPy will boot into standard mode; the ``boot.py`` file will be executed first, then ``main.py`` will run. -You can override this boot sequence by pulling ``GPIO28`` **up** (connect +You can override this boot sequence by pulling ``GP28`` **up** (connect it to the 3v3 output pin) during reset. This procedure also allows going back in time to old firmware versions. The WiPy can hold up to 3 different firmware versions, which are: the factory firmware plus 2 user updates. -After reset, if ``GPIO28`` is held high, the heart beat LED will start flashing +After reset, if ``GP28`` is held high, the heart beat LED will start flashing slowly, if after 3 seconds the pin is still being held high, the LED will start blinking a bit faster and the WiPy will select the previous user update to boot. -If the previous user update is the desired firmware image, ``GPIO28`` must be +If the previous user update is the desired firmware image, ``GP28`` must be released before 3 more seconds elapse. If 3 seconds later the pin is still high, the factory firmware will be selected, the LED will flash quickly for 1.5 seconds and the WiPy will proceed to boot. The firmware selection mechanism is as follows: -**Safe Boot Pin** ``GPIO28`` **released during:** +**Safe Boot Pin** ``GP28`` **released during:** +-------------------------+-------------------------+----------------------------+ | 1st 3 secs window | 2nd 3 secs window | Final 1.5 secs window | |