ESP32-GPIOs-dat

Sub Functions

DAC

  • IO25 IO26

Note

Input only

  • 36/39/34/35

Strapping

ESP32 共有 5 个 Strapping 管脚,可参考章节 6 电路原理图:

Func. IO default
MTDI 12 pull-down
GPIO 0 pull-up
GPIO 2 pull-down
MTDO 15  
GPIO 5  

regarding GPIO20

for newer ESP32 variants

  • Enable IO20 on ESP32
  • Some newer ESP32 variants (like ESP32-PICO-V3 and ESP32-PICO-MINI-02) do implement this pin and it can be used as a normal GPIO.

https://github.com/espressif/esp-idf/commit/6deaefde69c3f068d39b76d628b05b21fd142b79

for classic ESP32

  • IO20 = NC