35 lines
1.7 KiB
ReStructuredText
35 lines
1.7 KiB
ReStructuredText
General information about the ESP8266 port
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ESP8266 is a popular WiFi-enabled System-on-Chip (SoC) by Espressif Systems.
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Multitude of boards
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There are multitude of modules and boards from different sources which carry
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ESP8266 chip. MicroPython tries to provide a generic port which would run on
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as many boards/modules as possible, but there may be limitations. Adafruit
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Feather HUZZAH board is taken as a reference board for the port (for example,
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testing is performed on it). If you have another board, please make sure you
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have datasheet, schematics and other reference materials for your board
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handy to look up various aspects of your board functioning.
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To make a generic ESP8266 port and support as many boards as possible,
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following design and implementation decision were made:
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* GPIO pin numbering is based on ESP8266 chip numbering, not some "logical"
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numbering of a particular board. Please have manual/pin diagram of your board
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handy to find correspondce between your board pins and actual ESP8266 pins.
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We also encourage users of various boards to share this mapping via MicroPython
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forum, with the idea to collect community-maintained reference materials
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eventually.
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* All pins which make sense to support, are supported by MicroPython
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(for example, we don't expose pins which are used to connect SPI flash
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are not exposed, as they're unlikely useful for anything else, and
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operating on them will lead to board lock-up). However, any particular
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board may expose only subset of pins. Consult your board reference manual.
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* Some boards may lack external pins/internal connectivity to support
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ESP8266 deepsleep mode.
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