Postby ESP_Greg » Mon Dec 07, 2015 6:58 pm
XPD_DCDC is output as high level. Except it, rest GPIO can config as input high level.
About GPIO default status after booting: except 6 SDIO/GPIO4/GPIO5/GPIO16, rest GPIO all have internal pull-up resistor.
If config as low level, need external pull-low or inverting circuits triode.
PS: GPIO can't connect to 5V.
GPIO4/5can't be full-up to high level with external 1M resistor; you need 100K resistor instead. As attachment showed.
Who is online
Users browsing this forum: No registered users and 2 guests
Newbies Start Here
Are you new to ESP8266?
Unsure what to do?
Dunno where to start?
Start right here!
We also have a RTOS version and a MESH version too!
Complete listing of the official ESP8266 related documentation release by ESPRESSIF!
Must read here!