1 from microcontroller.pin import *
2 # note GPIO0 and GPIO2 have built-in pull-ups on common ESP8266
3 # breakout boards making them suitable for I2C SDA and SCL
18 """Transmit pin from second (transmit-only) UART """
23 """SPI MISO (Master in, Slave out)"""
25 """SPI MOSI (Master out, Slave in)"""