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In Wiren Board rev. 2.8 8 GPIO are placed on a special connector and connected via [[Special:MyLanguage/MCP23S08|MCP23S08]] and temporarily do not work with Linux API standard. How to work with them: see page [[Special:MyLanguage/MCP23S08|MCP23S08]]. | In Wiren Board rev. 2.8 8 GPIO are placed on a special connector and connected via [[Special:MyLanguage/MCP23S08|MCP23S08]] and temporarily do not work with Linux API standard. How to work with them: see page [[Special:MyLanguage/MCP23S08|MCP23S08]]. | ||
<b> All | <b> All GPIOs (as well as other ports of Wiren Board controllers) work with 3.3V voltage.Do not connect signals with voltage over 3.3V directly to the GPIO! In case you want to connect devices operating at a higher voltage, you must use matching circuits or connect(for 5V) via a resistor of 20 kOhm or more</b> | ||
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