AZ-Delivery D1 Mini - Serial Communication; The I2 C and SPI Interfaces

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Serial communication

To use UART0 (TX = GPIO1, RX = GPIO3), use the Serial object, just like on

an Arduino board: Serial.begin(baud_reate)

To use the alternative pins (TX = GPIO15, RX = GPIO13), use the following

line of code: Serial.swap()

after Serial.begin()

To use UART1 (TX = GPIO2), use the Serial1 object.

NOTE: All Arduino stream functions, like read(), write(), print(), println(), etc.

are supported as well.

The I2C and SPI interfaces

For the I2C and SPI interface use the default Arduino library syntax.