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Provide selection between A0 and VCC (#443, #338)

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Ivan Grokhotkov
2015-06-25 01:04:07 +03:00
parent 50d56f8b0c
commit 5b00eba9d7
3 changed files with 25 additions and 1 deletions
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README.md
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@ -169,6 +169,16 @@ Several APIs may be used to get flash chip info:
```ESP.getCycleCount()``` returns the cpu instruction cycle count since start as an unsigned 32-bit. This is useful for accurate timing of very short actions like bit banging.
```ESP.getVcc()``` may be used to measure supply voltage. ESP needs to reconfigure the ADC
at startup in order for this feature to be available. Add the following line to the top
of your sketch to use ```getVcc```:
```
ADC_MODE(ADC_VCC);
```
TOUT pin has to be disconnected in this mode.
Note that by default ADC is configured to read from TOUT pin using ```analogRead(A0)```, and
```ESP.getVCC()``` is not available.
#### OneWire (from https://www.pjrc.com/teensy/td_libs_OneWire.html) ####