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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Sample Code 1

Write a demo to allow UART1 and UART2 to realize the function of self-transmitting and self-receiving. Connect pinT of UART1 to its pinR,

UART2 TX to its RX. UART1 transmit "hello,Serial1", UART2 transmit "123", then receive their own data and print them out.

/*!

* @file dataTxAndRx.ino

* @brief Receive and transmit data via UART. Read the data sent by TX pin via pin RX.

* @n Experiment phenomenon: connect the TX to RX in Sub UART1 and UART2. Read the data sent by Sub UART and print it out.

*

* @copyright

Copyright (c) 2010 DFRobot Co.Ltd (https://www.dfrobot.com)

* @licence

The MIT License (MIT)

* @author [Arya](xue.peng@dfrobot.com)

* @version

V1.0

* @date

2019-07-28

* @get from https://www.dfrobot.com

* @url https://github.com/DFRobot/DFRobot_IICSerial

*/

#include <DFRobot_IICSerial.h>

/*DFRobot_IICSerial Constructor

*Parameter&wire

Wire

*Parameter subUartChannel sub UART channel, for selecting to operate UART1 or UART2

*@n Available parameter:

SUBUART_CHANNEL_1

SUBUART_CHANNEL_2

UART1

UART2

*Parameter IA1 corresponds with IA1 Level(0 or 1) of DIP switch on the module, and is used for configuring

* @n the IIC address of the 6th bit value(default: 1).

*Parameter IA0 corresponds with IA0 Level(0 or 1) of DIP switch on the module, and is used for configuring

* @n IIC address of the 5th bit value(default: 1).

* IIC address configuration:

* 7

6

5

4

3

2

1

0

* 0

IA1 IA0

1

0

C1

C0

0/1

*@n IIC address only has 7 bits, while there are 8 bits for one byte, so the extra one bit will be filled as 0.

*@n The 6th bit corresponds with IA1 Level of DIP switch, can be configured manually.

*@n The 5th bit corresponds with IA0 Level of DIP switch, can be configured manually.

*@n The 4th and 3rd bits are fixed

value 1 and 0 respectively