arduino/esp8266
1
0
Fork 0
mirror of https://github.com/esp8266/Arduino.git synced 2025-06-12 01:53:07 +03:00
Code Activity

Add VCC readout

Browse Source
This commit is contained in:
Andreas Steinel
2016-01-27 00:26:03 +01:00
parent aeb9597ccf
commit 7506055e8d
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
doc/reference.md
View File

@ -36,7 +36,7 @@ ESP8266 has a single ADC channel available to users. It may be used either to re
To read external voltage applied to ADC pin, use `analogRead(A0)`. Input voltage range is 0 — 1.0V. To read external voltage applied to ADC pin, use `analogRead(A0)`. Input voltage range is 0 — 1.0V.
To read VCC voltage, ADC pin must be kept unconnected. Additionally, the following line has to be added to the sketch: To read VCC voltage, use `ESP.getVcc()` and ADC pin must be kept unconnected. Additionally, the following line has to be added to the sketch:
```c++ ```c++
ADC_MODE(ADC_VCC); ADC_MODE(ADC_VCC);