2023/10/12 10:51

Gravity: IIC to dual UART module Wiki - DFRobot

https://wiki.dfrobot.com/Gravity: IIC to Dual UART Module SKU: DFR0627

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Just like other hardware serial ports, the baud rate of the extended UARTs on the module need to be set. For instance, set UART1 to 9600,

UART2 to 115200, as shown below:

iicSerial1.begin(9600);

//init UART1, set baud rate to 9600

iicSerial2.begin(115200); //init UART2, set baud rate to 115200

The IIC to dual UART module adopts 14.7456M crystal oscillator, and it supports the following baud rate:

NO.

1

2

3

4

5

6

7

8

Baud Rate

2400

4800

57600

7200

9600

14400

19200

28800

Baud Rate

38400

76800

115200

153600

230400

460800

307200

921600

Users can directly the above baud rate or define their own baud rate, such as 12800, etc.

NOTE: Since crystal oscillator and baud rate are closely related, and not all baud rates are supported by the former. So users have to do

test on their own when using user-defined baud rate.

Requirements

Hardware

DFRduino UNO R3 (https://www.dfrobot.com/product-838.html) (or similar) x 1

IIC to dual UART module x1

Software

Arduino IDE (https://www.arduino.cc/en/Main/Software)

Download and install the IIC serial Library and Example Program (https://github.com/DFRobot/DFRobot_IICSerial) (About how to