Add support for SSD1306 and SH1106 I2C displays for STM32F1#3

Merged

thinkyhead merged 3 commits intoMarlinFirmware:devfrom

jmz52:stm32duino

Aug 21, 2018

Commits on Aug 18, 2018

Commits on Aug 19, 2018

Only use stm32duino code in stm32duino environment
jmz52
committed