2015-11-29 05:50:23 -05:00
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notes on PCF8574
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2015-11-29 - 0.1.04
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======================
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2017-02-27 04:13:59 -05:00
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On some platforms (reported on an ESP8266) the PCF8574 constructor is causing problems e.g. continuous reboots.
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This is caused by the call to Wire.begin() in the constructor of the PCF8574 object. It might be called before
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the Wire object is created, especially when both are global objects the order of instantiating might differ.
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2015-11-29 05:50:23 -05:00
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Solution is moving the call to Wire.begin() from the constructor to void setup() before any call to an PCF8574 object.
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2016-05-20 08:33:42 -04:00
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FIXED in 0.1.08 @ 2016-05-20
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2015-11-29 05:50:23 -05:00
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2017-04-20 04:55:00 -04:00
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2016-07-26 note on adress ranges
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==================================
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from https://github.com/RobTillaart/Arduino/issues/44
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- TYPE ADDRESS-RANGE
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- PCF8574 0x20 to 0x27,
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- PCF8574A 0x38 to 0x3F
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