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-rw-r--r--source/microcontrollers/maple_mini/index.rst1
-rw-r--r--source/microcontrollers/olimex-esp32-pro/index.rst10
2 files changed, 11 insertions, 0 deletions
diff --git a/source/microcontrollers/maple_mini/index.rst b/source/microcontrollers/maple_mini/index.rst
index bf8a9b2..f472edb 100644
--- a/source/microcontrollers/maple_mini/index.rst
+++ b/source/microcontrollers/maple_mini/index.rst
@@ -98,6 +98,7 @@ See also
* https://web.archive.org/web/20150502182337/http://nodonogard.blogspot.com/2014/08/writting-gnuk-binary-to-fst-01-using-st.html
* https://www.earth.li/~noodles/blog/2017/02/gnuk-on-maple-mini.html
* https://www.earth.li/~noodles/blog/2015/08/program-fst01-with-buspirate.html
+* https://enricorossi.org/blog/2020/flash_programming_stm32_maple_mini/
..
vim: set filetype=rst:
diff --git a/source/microcontrollers/olimex-esp32-pro/index.rst b/source/microcontrollers/olimex-esp32-pro/index.rst
index 291b109..8c86d7e 100644
--- a/source/microcontrollers/olimex-esp32-pro/index.rst
+++ b/source/microcontrollers/olimex-esp32-pro/index.rst
@@ -39,6 +39,16 @@ These are the settings used:
:Core Debug Level: None
:Erase All Flash Before Sketch Upload: Disabled
+I2C
+---
+
+To use i2c on the marked pins 11 and 12 on EXT2 you need to select the
+I2C port with::
+
+ Wire.setPins(32, 27);
+
+e.g. in the ``setup()``, before starting the i2c communications.
+
Troubleshooting
---------------