MIKROE-2821 Datasheet MIKROE-2821 | P4-P5

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NC 6 MOSI SDA 11 NC

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Powersupply 3.3V 7 3.3V 5V 10 NC

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Ground GND 8 GND GND 9 GND Ground

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RS4853clickelectricalspecifications

Description Min Typ Max Unit

VoltageatanyterminaloftheRS485connectors ‐7 ±5 12 V

Differentialloadresistance 54 60Ω

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Onboardsettingsandindicators

Label Name Default Description

PWR PowerLED‐PowerLEDindicatesthattheclickispoweredon

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Softwaresupport

We provide a demo application for the RS485 3 click on our LibStock page, as well as a demo

application (example), developed using MikroElektronika compilers. The demo can run on all

the main MikroElektronika development boards.

Examples Description

The application is composed of two sections :

 SystemInitialization‐InitializesGPIOpinsusedforbuttonpressdetection,andtwoUART

modules:firstoneusedforclickandsecondusedforlogging.

 ApplicationTask‐(Codesnippet)ConstantlypollsthestateofGPIOpinusedforbuttonpress

detection.Wheneverthepressisdetected,apredefinedmessagewillbesentusingRS4853

click.Atthesametime,insidetheapplicationtask,theUARTisconstantlypolled,checkingfor

RS4853clickactivity.Whenever

newdataonclickisreceived,itwillbeloggedtoUARTmodule.

void applicationTask()

{

//SENDS DATA

if (Button( &GPIOA_IDR , 5, 100, 1 ))

{

for (i = 0; i <= 7; i++)

{

UART3_Write( SEND_DATA [ i ] );

}

UART1_Write_Text("Data sent");

}

//RECEIVE AND LOG DATA

if (UART3_Data_Ready())

{

tmp = UART3_Read();

UART1_Write(tmp);

}

The full application code and ready to use projects can be found on our LibStock page.

Other mikroE Libraries used in this example:

 UART

Additional notes and information

Depending on the development board you are using, you may need USB UART click, USB

UART 2 click or RS232 click to connect to your PC, for development systems with no UART to

USB interface available on the board. The terminal available in all MikroElektronika compilers,

or any other terminal application of your choice, can be used to read the message.

https://www.mikroe.com/rs485 ‐3‐click12‐5‐17

P1-P3 P4-P5

MIKROE-2821

Mfr. #:

Buy MIKROE-2821

Manufacturer:

Mikroe

Description:

Interface Development Tools RS485 3 click

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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Products related to this Datasheet

MIKROE-2821