available()

Posted by On 02 / 01 / 2019 0 Comment

Description

Returns the data of the private array readData in the ModbusMasterNode class. readData is the array stored after reading back the Slave device register using the Read function code.

Syntax

node1.available()

Parameters

node1: ModbusMasterNode object.

Return

uint8_t: Returns the number of data in the private array readData of the ModbusMasterNode class

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#include <Modbus86.h>

  

ModbusMaster bus1;

ModbusMasterNode node1;

 

uint8_t result;

     

uint8_t j = 0;

uint16_t data[6];

     

void setup()

{

    while(!Serial);

    Serial1.begin(115200);

    bus1.begin(MODBUS_RTU, Serial1);

    node1.attach(16, bus1);

 

    result = node1.readHoldingRegisters(0, 6);

    if (result != MODBUS_SUCCESS) {

        Serial.print("readHoldingRegisters => ErrorCode: ");

        Serial.println(result);

    } else {

        Serial.print("From Holding Register receiveData: ");

        while (node1.available() > 0) {

            data[j++] = node1.receive();

            Serial.println(data[j - 1]);

        }

    }

}

  

void loop()

{

}

See Also

receive()

Library Reference

86Duino Reference Text Follows Creative Commons Attribution-Share Alike 3.0 License. The code examples in Resources have been released into the public domain.