docs/esp8266: Add instructions on entering programming mode manually.
This adds to the ESP8266 tutorial instructions explaining which pins to
pull low to enter programming mode.
Commit made originally by in
@@ -75,6 +75,10 @@ the DTR and RTS pins wired in a special way then deploying the firmware should
be easy as all steps can be done automatically. Boards that have such features
include the Adafruit Feather HUZZAH and NodeMCU boards.
+If you do not have such a board, you need keep GPIO0 pulled to ground and reset
+the device by pulling the reset pin to ground and releasing it again to enter
+programming mode.
+
For best results it is recommended to first erase the entire flash of your
device before putting on new MicroPython firmware.
@@ -113,6 +117,10 @@ the firmware (note the ``-fm dio`` option)::
If the above commands run without error then MicroPython should be installed on
your board!
+If you pulled GPIO0 manually to ground to enter programming mode, release it
+now and reset the device by again pulling the reset pin to ground for a short
+duration.
+
Serial prompt
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