Tags: xreef/PCF8574_library
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Force SDA SCL to use GPIO numeration (https://www.mischianti.org/foru… …ms/topic/cannot-set-sda-clk-on-esp8266/).
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Force SDA SCL to use GPIO numeration (https://www.mischianti.org/foru… …ms/topic/cannot-set-sda-clk-on-esp8266/).