ESP8266 Community Forum

- Fri Mar 20, 2015 9:47 pm #12365 I'm in STATIONAP mode and readvdd33() seems to work fine for me. I'm using 1.0.0 sdk with custom made nodemcu build. One thing tho, it seems like the read is off by about 200 mvolts. Not too much of a hassle since it seems to always be off by the same offset.

- Sat Mar 21, 2015 3:39 am #12373

I'm in STATIONAP mode and readvdd33() seems to work fine for me. I'm using 1.0.0 sdk with custom made nodemcu build. One thing tho, it seems like the read is off by about 200 mvolts. Not too much of a hassle since it seems to always be off by the same offset.

can you upload your custom build nodemcu with sdk 1.0

ESP8266.com Moderator
Lets get the party started and +1

[url=https://www.banggood.com/custlink/KvGGhGF4wG[/url]

I like ESP8266 and ESP8285 and ESP32

- Sat Mar 21, 2015 8:16 am #12381

I'm in STATIONAP mode and readvdd33() seems to work fine for me. I'm using 1.0.0 sdk with custom made nodemcu build. One thing tho, it seems like the read is off by about 200 mvolts. Not too much of a hassle since it seems to always be off by the same offset.

can you upload your custom build nodemcu with sdk 1.0

https://github.com/chadouming/nodemcu-f ... 6/prebuilt

I'm making new build often.

- Fri Mar 27, 2015 6:14 pm #12768 I observed a similar behaviour with my homebrew nodemcu with the 1.0.0 SDK. I changed the 096dev branch of nodemcu to use the SDK 1.0.0 libraries and espconn.h. Then I compiled with the 1.0.0 version of esp-open-sdk. The measured values are fine but after using a "print(node.readvdd33())" for a few times, the system starts rebooting on issuing the command:

> print(node.readvdd33())
3370
> print(node.readvdd33())
3370
> print(node.readvdd33())
3370
> print(node.readvdd33())
3369
> print(node.readvdd33())
rB�Ǧ�SU ���J����^]��HġH�
NodeMCU 1.0.0 Dude-Edition v0.1 build 20150327 powered by Lua 5.1.4
lua: cannot open init.lua
> print(node.readvdd33())
bB�1
�S��Ư��ΌC��=ơH�
NodeMCU 1.0.0 Dude-Edition v0.1 build 20150327 powered by Lua 5.1.4
lua: cannot open init.lua
> print(node.readvdd33())
bBʎ{�Sb9���-B���J�����H�
NodeMCU 1.0.0 Dude-Edition v0.1 build 20150327 powered by Lua 5.1.4
lua: cannot open init.lua
>

Waiting for a while or powercyling the module will solve the problem and everything starts over. I'll check tomorrow, if the period of time between the repeated usage of the function has any influence.

Thank you.