Andy Green 15ce46d971 drivers: initial generic gpio and i2c plus bitbang ... Make a start on generic peripheral and bus drivers to provide meta-functionality regardless of platform. On the one hand this simply provides... - bitbang i2c on top of esp-idf gpio apis - ssd1306 oled chip driver as found on Heltec WB32 - modifications to the minimal example test for esp32 to use that ... on the other hand, those capabilities are provided by creating: - an abstract i2c class object - an abstract gpio class object - i2c class implementation using the abstract gpio for bitbang - an abstract display class object - an abstract display state (brightness, animated change, on/off/init tracking, autodim after inactive, auto-off / blanking after inactive) ... with the intention, eg, you only have to add a platform implementation for the gpio to be able to use the i2c-based display drivers and state handling, and i2c bitbang, without any other modifications.		2020-06-10 19:17:08 +01:00
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lws-bb-i2c.c	drivers: initial generic gpio and i2c plus bitbang	2020-06-10 19:17:08 +01:00