ESP8266 ESP32 Compatibility

This document reflects conflicts between NodeMCU/ESP8266 and NodeMCU/ESP32 and requirements to achieve larger degree of compatibility:

adc

bit

bthci

can

dht

file

gpio

ESP8266:

• gpio.mode()
  • gpio.INPUT
  • gpio.OUTPUT
  • gpio.OPENDRAIN
  • gpio.INT
• gpio.trig(pin,type,callback(level,when))
  • types: "up", "down", "both", "low", "high"

ESP32:

• gpio.config({gpio=..,dir=..,pull=..,opendrain=..})

  • dir:
    • gpio.IN
    • gpio.OUT
    • gpio.IN_OUT
  • pull:
    • gpio.FLOATING disables both pull-up and -down
    • gpio.PULL_UP enables pull-up and disables pull-down
    • gpio.PULL_DOWN enables pull-down and disables pull-up
    • gpio.PULL_UP_DOWN enables both pull-up and -down

• gpio.trig(pin,types,callback(pin,level))

  • types:
    • gpio.INTR_UP for trigger on rising edge
    • gpio.INTR_DOWN for trigger on falling edge
    • gpio.INTR_UP_DOWN for trigger on both edges
    • gpio.INTR_LOW for trigger on low level
    • gpio.INTR_HIGH for trigger on high level

i2c

ledc

net

node

ESP8266:

• node.info()
• node.chipid() return integer (last 3 bytes of the station MAC address)

ESP32:

• node.info() missing
• node.chipid() returns string with '0x' as prefix and 8 bytes whereas the last byte is of the MAC address is dropped (risk of 255 identical chipids)

ow (1-Wire)

sdmmc

sigma delta

spi

struct

tmr

u8g2

u8g2 Display

uart

wifi

ws2812